Page 1 Agilent Technologies. We have made no changes to this manual copy. The HP XXXX referred to in this document is now the Agilent XXXX. For example, model number HP8648A is now model number Agilent 8648A.
Page 2 Service Guide HP 8560E and 8560EC Spectrum Analyzers Manufacturing Part Number: 08560-90157 Supersedes: 08560-90149 Printed in USA December 1999 © Copyright 1990 − 1999 Hewlett-Packard Company...
Page 3 Notice Hewlett-Packard makes no warranty of any kind with regard to this material, including but not limited to, the implied warranties of merchantability and ﬁtness for a particular purpose. Hewlett-Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.
Page 4 This is a Safety Class 1 Product (provided with a protective WARNING earth ground incorporated in the power cord). The mains plug shall be inserted only in a socket outlet provided with a protected earth contact. Any interruption of the protective conductor inside or outside of the product is likely to make the product dangerous.
Page 5 Warranty This Hewlett-Packard instrument product is warranted against defects in material and workmanship for a period of one year from date of shipment. During the warranty period, Hewlett-Packard Company will, at its option, either repair or replace products that prove to be defective. For warranty service or repair, this product must be returned to a service facility designated by Hewlett-Packard.
Page 6: Table Of Contents
Adjustment Indicator ............57 1. High Voltage Power Supply Adjustment (8560E only)......60 Assembly Adjusted .
Page 7 Contents Assembly Adjusted ............70 Related Performance Test .
Page 8 Contents Equipment ..............94 Procedure .
Page 9 Procedure ..............130 2a. Adjustment Procedures: HP 3335A Source not Available What You'll Find in This Chapter .
Page 10 Procedure 2B. A1 Front Frame/A18 CRT (8560E)....... . . 160...
Page 11 Procedure 14. W3 Line Switch Cable (8560E) ........
Page 12 Contents (100 to 150) ............. . . 300 ADC Errors (200 to 299) .
Page 13 32 K-Byte Static RAM ............392 A16 Assembly Fast ADC Control Circuits (8560E with Option 007) ....393 CPU Interface and Control Registers .
Page 14 Frequency-Count Marker Problems (8560E) ........
Page 15 Contents Third LO Driver Ampliﬁer (100 MHz VCXO) ........528 Unlocked Reference PLL (600 MHz SAWR) .
Page 16 Troubleshooting Using the TAM (8560E only) ........
Page 17 Contents...
Page 18 Figure 1-4 . HP 8560E/EC Shipping Container and Cushioning Materials ......
Page 19 Figure 4-5 . Parts Identification, Front Frame (1 of 2), 8560E ......
Page 20 Figures Figure 7-3 . Fast ADC Block Diagram (Option 007 in E-series instruments) ......403 Figure 8-1 .
Page 21 Figure 11-5 . HP 8560E RF Section Troubleshooting Block Diagram .......
Page 22 Table 4-6 . Parts List, Cover Assembly (See Figure 4-2) − 8560E and 8560EC ......
Page 23 Table 12-4 . Automatic Fault Isolation References ..........641 Table 13-1 . CLIPs Available for HP 8560E and 8560EC Spectrum Analyzers......655...
Page 24: General Information
General Information...
Page 25: Introduction
General Information Introduction Introduction This HP 8560E and 8560EC Spectrum Analyzer Service Guide contains information required to adjust and service the HP 8560E and 8560EC to the assembly level. How to Use this Guide ............page 25 Differences between HP 8560 EC-series and E-series Spectrum Analyzers ................
Page 26: How To Use This Guide
Screen Text This font indicates a softkey or a front panel key HP 8560E/EC This term is used to refer to both HP 8560 E-series and HP 8560 EC-series instruments Documentation Outline HP 8560 E-Series Spectrum Analyzer Calibration Guide and HP 8560 EC-Series Calibration Guide •...
Page 27: Differences Between Hp 8560 Ec-Series And E-Series Spectrum Analyzers
Unless otherwise noted, the information in this manual applies to all 8560EC and 8560E instruments. FADC is a standard feature, and not an option in HP 8560 EC-series NOTE instruments. However, it is still necessary that option “007” be in the instrument’s serial ID string.
Page 28: Instrument Variations
General Information Instrument Variations Instrument Variations There are options available to the HP 8560E/EC spectrum analyzer. The following table lists these options and identiﬁes the assemblies which are unique to them. Table 1-1 Instrument Variations Option Added Deleted HP 8560E/EC...
Page 29 General Information Instrument Variations Table 1-1 Instrument Variations Option Added Deleted HP 8560E/EC A15 RF Assembly (Opt W49 Cable Assembly Option 103 103) (Delete OCXO) W50 Cable Assembly A15 RF Assembly (Std) A21 OCXO HP 8560E/EC HP 85620A Mass Option 104...
Page 30: Serial Numbers And Repair Information
General Information Serial Numbers and Repair Information Serial Numbers and Repair Information Hewlett-Packard makes frequent improvements to its products to enhance performance, usability, or reliability. Hewlett-Packard service personnel have access to complete records of design changes to each type of equipment, based on the equipment serial number. Whenever you contact Hewlett-Packard about a product, have the complete serial number available to ensure obtaining the most complete and accurate information possible.
Page 31: Figure 1-2 Earlier Serial Number Label Example
General Information Serial Numbers and Repair Information Figure 1-2 Earlier Serial Number Label Example It is important that you realize that the new serial number format (US00000000) is always considered "above" the earlier format (0000A00000) when you encounter change information such as ".…serial preﬁx 3425A and above"...
Page 32: Hp 8529B Test And Adjustment Module
When attached to the spectrum analyzer rear panel, the HP 85629B Test and Adjustment Module (TAM) provides diagnostic functions for the HP 8560E/EC. Because the TAM connects directly to the spectrum analyzer internal data and address bus, it controls the spectrum analyzer hardware directly.
Page 33: Service Kit
General Information Service Kit Service Kit The Service Kit (HP part number 08562-60021) contains service tools required to repair the instrument. Refer to Table 1-2 for a list of items in the service kit. Table 1-2 Service Kit Contents Description...
Page 34: Recommended Test Equipment
Table 1-3 on page 34. Other equipment may be substituted if it meets or exceeds the critical speciﬁcations listed in the table. Refer to the HP 8560 E-Series and EC-Series Spectrum Analyzer Calibration Guide for the performance tests. Chapter 1...
Page 35 FM peak deviation: 5 kHz † * Part of microwave workstation; If an HP 3335A is not available, see chapter 2a for performance tests using alternate equipment. P = performance tests; A = adjustments; M = test & adjustment module T = troubleshooting;...
Page 36 Table 1-3 Recommended Test Equipment Instrument Critical Speciﬁcations for Equipment Substitution Recommended Model Counters Frequency Output frequency: 10 MHz HP 5061B −10 standard Accuracy: <1 × 10 P,A,M,V Microwave Frequency range: 9 MHz to 26.5 GHz HP 5343A* −10 frequency Timebase accuracy (aging): <5 ×...
Page 37 Delta-t cursor accuracy in 500 ns/Div: <0.1 µs Ampliﬁer Frequency range: HP 11975A HP 8560E/EC, 2.0 to 2.9 GHz HP 8561E, 2.0 to 6.5 GHz HP 8563E, 2.0 to 8.0 GHz HP 8564E, 2.0 to 8.0 GHz HP 8565E, 2.0 to 8.0 GHz Minimum output power (leveled) 2.0 to 8.0 GHz: +16 dBm...
Page 38 Instrument Critical Speciﬁcations for Equipment Substitution Recommended Model Output SWR (leveled): <1.7 Output voltage: ≥24 Vdc Power supply HP 6114A Output voltage accuracy: <±0.2 V Signature Clock frequency >10 MHz HP 5005A/B multimeter Time interval function Range: −15 Vdc to +120 Vdc...
Page 39 Frequency range: dc to 18 GHz HP 8491B attenuator Attenuation accuracy: <±0.6 dB Option 010 Maximum SWR: 1.2 (dc to 2.9 GHz) Reference supplied with HP 8481D HP 11708A attenuator Termination Frequency range: dc to 2.9 GHz HP 908A P,M,V Impedance: 50 Ω...
Page 40 Length: ≥ 61 cm (24 in.) Cable Frequency range: 30 Hz to 50 GHz 8120-6164 P,A,V,T (for HP 8564E Maximum SWR: <1.55 at 50 GHz and HP Maximum insertion loss: 5.75 dB 8565E) Connectors: 2.4 mm (f) to 2.4 mm (m) Length: ≥...
Page 41 Adapter APC 3.5(f)-to-APC 3.5(f) 5061-5311 P,M,V (two required) Adapter APC 3.5(m)-to-APC 3.5(m) 1250-1748 (two required) Adapter 2.4 mm(f)-to-2.4 mm(f) HP 11900B P,A,T,V Adapter APC 3.5(f)-to-2.4 mm(f) HP 11901B Adapter APC 3.5(m)-to-2.4 mm(f) HP 11901D Adapter Type N(f)-to-2.4 mm(f) HP 11903B...
Page 42: Electrostatic Discharge
General Information Electrostatic Discharge Electrostatic Discharge Electrostatic discharge (ESD) can damage or destroy electronic components. Therefore, all work performed on assemblies consisting of electronic components should be done at a static-free workstation. Figure 1-3 is an example of a static-safe workstation using two kinds of ESD protection: •...
Page 43: Reducing Potential For Esd Damage
• Be sure all instruments are properly earth-grounded to prevent build-up of static discharge. Static-Safe Accessories Table 1-4 Static-Safe Accessories HP Part Description Number Set includes: 3M static control mat 0.6 m × 1.2 m (2 9300-0797 ft × 4 ft) and 4.6 cm (15 ft) ground wire. (The wrist-strap and wrist-strap cord are not included.
Page 44: Returning Instruments For Service
General Information Returning Instruments for Service Returning Instruments for Service Service Tag If you are returning the instrument to Hewlett-Packard for servicing, ﬁll in and attach a blue service tag. Service tags are supplied in the back of this chapter. Please be as speciﬁc as possible about the nature of the problem.
Page 45 General Information Returning Instruments for Service 4. Use the original materials or a strong shipping container that is double-walled, corrugated cardboard carton with 159 kg (350 lb) bursting strength. The carton must be both large enough and strong enough to accommodate the spectrum analyzer and allows at least 3 to 4 inches on all sides of the spectrum analyzer for packing material.
Page 46: Figure 1-4 Hp 8560E/Ec Shipping Container And Cushioning Materials
General Information Returning Instruments for Service Figure 1-4 HP 8560E/EC Shipping Container and Cushioning Materials Table 1-5 Static-Safe Accessories Item Description HP Part Number 9211-5636 Outer Carton 08590-80013 Pads (2) 08590-80014 Bottom Tray Chapter 1...
Page 47: Sales And Service Offices
General Information Sales and Service Ofﬁces Sales and Service Ofﬁces Hewlett-Packard has sales and service ofﬁces around the world providing complete support for Hewlett-Packard products. To obtain servicing information, or to order replacement parts, contact the nearest Hewlett-Packard Sales and Service Ofﬁce listed in Table 1-6 on page 47.
Page 48: Table 1-6 . Hewlett-Packard Sales And Service Offices
General Information Sales and Service Ofﬁces Table 1-6 Hewlett-Packard Sales and Service Ofﬁces UNITED STATES Instrument Support Center Hewlett-Packard Company (800) 403-0801 EUROPEAN FIELD OPERATIONS Headquarters France Germany Hewlett-Packard S.A. Hewlett-Packard France Hewlett-Packard GmbH 150, Route du Nant-d’Avril 1 Avenue Du Canada Hewlett-Packard Strasse 1217 Meyrin 2/ Geneva Zone D’Activite De...
Page 49 General Information Sales and Service Ofﬁces Chapter 1...
Page 50: Adjustment Procedures
Adjustment Procedures...
Page 51: Introduction
This chapter contains information on automated and manual adjustment procedures for the HP 8560E/EC spectrum analyzer. Perform the automated procedures using the HP 85629B Tests and Adjustment Module (TAM). Never perform adjustments as routine maintenance. Adjustments should be performed after a repair or performance test failure.
Page 52: Safety Considerations
52, "Recommended Test Equipment." Any equipment that satisﬁes the critical speciﬁcations given in the table may be substituted for the preferred test equipment. If an HP 3335A is not available for performance tests, tests using alternate test equipment are available. See Chapter 2a, “Adjustment Procedures: HP 3335A Source not Available,”...
Page 53: Adjustment Tools
If the tuning slug requires a slotted tuning tool, use HP part number 8710-1010. If the tuning slug requires a forked tuning tool, use HP part number 8710-0772.
Page 54 Repaired A5 IF IF Bandpass Adjustment IF Amplitude Adjustment A6 Power Supply High Voltage Power Supply Adjustment (8560E only) Display Adjustment (8560E only) A6A1 HV Module High Voltage Power Supply Adjustment (8560E only) Display Adjustment (8560E only) A7 1ST LO First LO Distribution Ampliﬁer Adjustment...
Page 55: Table 2-2 Adjustable Components
Changed or Order Listed Repaired Frequency Response Adjustment A15U100 Sampler Sampling Oscillator Adjustment A17 CRT Driver Display Adjustment (8560E only) A18V1 CRT Display Adjustment (8560E only) A19 HP-IB No related adjustment A21 OCXO 10 MHz Reference Adjustment (OCXO) Table 2-2...
Page 56 Adjustment Procedures Introduction Table 2-2 Adjustable Components Reference Adjustment Adjustment Description Number Designator Name A5L702 LC CTR 4 Adjusts center frequency of fourth stage of LC bandwidth ﬁlter to 10.7 MHz. A5R343 15 DB ATT Adjusts the attenuation of the Reference 15 dB attenuator for 15 dB between minimum and maximum attenuation.
Page 57: Table 2-3 Factory Selected Components
Adjustment Procedures Introduction Table 2-2 Adjustable Components Reference Adjustment Adjustment Description Number Designator Name A17R26 X FOCUS Adjusts focus at the left and right corners of the display. A17R34 COARSE FOCUS 2 Adjusts focus at the center of the display. A17R55 X GAIN Adjusts the horizontal-deﬂection ampliﬁer gain.
Page 58: Using The Tam
Adjustment Procedures Using the TAM Using the TAM The HP 85629B TAM can be used to perform approximately half of the HP 8560E/EC adjustment procedures. Table 2-4 on page 58 lists the TAM adjustments and their corresponding manual adjustments. The TAM adjustments do not include procedures for choosing factory-selected components.
Page 59: Table 2-4 . Tam Adjustments
13. External Mixer Bias * External Mixer Bias Adjustment 14. External Mixer External Mixer Amplitude Adjustment Amplitude * * Adjustment excluded if the HP 8560E/EC is an Option 002. Table 2-5 Required Test Equipment for TAM Adjustment Equipment Used Required...
Page 60: Table 2-5 Required Test Equipment For Tam
Adjustment Equipment Used Required Recommended Model Model Log Fidelity Synthesizer/Level Generator 3335A Test Cable BNC HP 10503A Sampling Oscillator Manual Probe Cable Frequency Counter HP 5342A, (3 to 6.8 GHz) HP 5343A LO Distribution Power Meter HP 8902A, Ampliﬁer HP 436A, HP 438A Power Sensor (3 to 6.8...
Page 61: High Voltage Power Supply Adjustment (8560E Only)
Adjustment Procedures 1. High Voltage Power Supply Adjustment (8560E only) 1. High Voltage Power Supply Adjustment (8560E only) Assembly Adjusted A6 power supply Related Performance Test There is no related performance test for this adjustment. Description The high voltage power supply is adjusted to the voltage marked on the A6A1 HV module.
Page 62: Equipment
Adjustment Procedures 1. High Voltage Power Supply Adjustment (8560E only) Figure 2-1 High Voltage Power Supply Adjustment Setup Equipment Digital multimeter .......HP 3456A DVM test leads ........HP 34118A Procedure After disconnecting the ac power cord, allow capacitors in the...
Page 63 Adjustment Procedures 1. High Voltage Power Supply Adjustment (8560E only) Voltage marked on A6A1 HV Module = 0pt......Vdc 6. Adjust A6R410 HV ADJ for a voltage equal to the voltage recorded in step 5. 7. Press to turn the spectrum analyzer off and disconnect the LINE power cord.
Page 64: Display Adjustment (8560E Only)
007 spectrum analyzers. Figure 2-2 Display Adjustment Setup Equipment 10 dB VHF step attenuator routines........ HP 355D Photometer/radiometer routines ........ TEK J16-TV Adapters Type N (m) to BNC (f) 1250-1476 Cables...
Page 65: Procedure
Adjustment Procedures 2. Display Adjustment (8560E only) Procedure 1. Press to turn the spectrum analyzer off. Remove the spectrum LINE analyzer cover and fold out the A2 Controller and A3 Interface assemblies as illustrated in Figure 2-2 on page 63. Connect the CAL OUTPUT to the INPUT.
Page 66: Intensity Adjustments
15 NITs, as indicated by the TEK J16-TV Photometer/Radiometer. 17.Press , and . Locate the dot just MORE 1 of 2 CRT ADJ PATTERN under the HP logo. Adjust A17R93 ASTIG for the smallest round dot possible. Chapter 2...
Page 67: Figure 2-3 Crt Adjust Pattern
Adjustment Procedures 2. Display Adjustment (8560E only) Figure 2-3 CRT Adjust Pattern Chapter 2...
Page 68: Figure 2-4 A2 Display Adjustment Locations
Adjustment Procedures 2. Display Adjustment (8560E only) Figure 2-4 A2 Display Adjustment Locations 18.Adjust A17R34 COARSE FOCUS and A17R92 DDD for the best focus of the characters at the center of the screen. 19.Adjust A17R21 Z FOCUS for the best focus of the outside box of the test pattern.
Page 69: Fast Zero Span Adjustments
VIDEO GAIN and A2R271 SWEEP GAIN to midrange. Adjustment locations are shown in Figure 2-4 on page 67 for these A2 adjustments. 23.Set the HP 355D attenuator to provide 30 dB attenuation. 24.Press on the spectrum analyzer, and connect the equipment PRESET as shown in Figure 2-2 on page 63.
Page 70 Adjustment Procedures 2. Display Adjustment (8560E only) 36.Adjust A2R209 and A2R271 until the start of sweep is aligned to the leftmost vertical graticule line and the stop sweep is aligned with the right most vertical graticule line. 37.Press . The two traces should be aligned within...
Page 71: If Bandpass Adjustment
Adjustment Procedures 3. IF Bandpass Adjustment 3. IF Bandpass Adjustment Assembly Adjusted A5 IF assembly Related Performance Test Resolution Bandwidth Accuracy and Selectivity Description The center frequency of each IF bandpass ﬁlter pole is adjusted by DAC-controlled varactor diodes and an inductor (for the LC poles) or a transformer (for the crystal poles).
Page 72: Equipment
2. Connect the negative DVM lead to pin 6 of A5J6. See Figure 2-5 on page 70. Set the HP 3456A controls as follows: Function ..............DC VOLTS Range .................. 10 V 3. On the HP 8560E/EC, press , 2,...
Page 73: Table 2-6 . Factory-Selected Lc Filter Capacitors
Adjustment Procedures 3. IF Bandpass Adjustment 8. Adjust A5L301 LC CTR 2 by repeating steps 4 through 6. 9. Move the positive DVM test lead to A5TP2 (this is a resistor-lead type of test point). 10.Adjust A5L700 LC CTR 3 by repeating steps 4 through 6. 11.Move the positive DVM test lead to A5TP1 (this is a resistor-lead type of test point).
Page 74: Table 2-8 . Factory-Selected Xtal Filter Capacitors
Adjustment Procedures 3. IF Bandpass Adjustment XTAL Bandpass Adjustments 13.On the HP 8560E/EC, press , 1, , and SPAN 14.Move the positive DVM test lead to A5TP7. 15.On the HP 8560E/EC, press . Wait for the IF ADJ CURR IF STATE ADJUST STATUS message to disappear before continuing to the next step.
Page 75: Table 2-9 Xtal Factory-Selected Capacitor Selection
7.5 to 8.5 * 8.5 to 9.5 * 9.5 to 10 * Indicates a condition that should not exist; suspect broken hardware. Table 2-10 Capacitor Part Numbers Capacitor HP Part Value (pF) Number 0160-4793 0160-4792 0160-4791 0160-4790 0160-4789 0160-4788...
Page 76: If Amplitude Adjustments
Adjustment Procedures 4. IF Amplitude Adjustments 4. IF Amplitude Adjustments The IF Amplitude Adjustments consist of the Cal Oscillator Amplitude adjustment and the Reference 15 dB Attenuator adjustment. Assembly Adjusted A4 log amp/cal oscillator A5 IF assembly Related Performance Tests IF Gain Uncertainty Scale Fidelity Equipment Frequency synthesizer ....
Page 77: A4 Log Amp/Cal Oscillator Amplitude Adjustment
Adjustment Procedures 4. IF Amplitude Adjustments Figure 2-7 IF Amplitude Adjustment Locations A4 Log Amp/Cal Oscillator Amplitude Adjustment This adjustment sets the output amplitude of the cal oscillator on the A4 assembly, and the absolute amplitude of the reference 15 dB attenuator.
Page 78: Procedure
76 for adjustment location. 2. Disconnect W29, violet coax cable, from A5J3. Connect the test cable between A5J3 and the 50 Ω output of the HP 3335A. Press LINE turn the spectrum analyzer on. 3. Set the HP 8560E/EC controls as follows: Center frequency ..
Page 79: A5 Reference Attenuator Adjustment
A5 Reference Attenuator Adjustment to −60 dBm. 1. Set the HP 3335A AMPLITUDE 2. Connect a BNC cable between the 50 Ω output of the HP 3335A and the HP 8560E/EC INPUT 50 Ω. 3. On the HP 8560E/EC, press . Use the...
Page 80 Span ................. 0 Hz Reference level ............−10 dBm Resolution BW ............300 kHz 7. Connect a BNC cable between the HP 8560E/EC CAL OUTPUT and INPUT 50Ω. 8. On the HP 8560E/EC, press , and REF LVL ADJ 9.
Page 81: Dc Log Amplifier Adjustments
Assembly Adjusted A4 log ampliﬁer Related Performance Tests IF Gain Uncertainty Scale Fidelity Equipment Frequency synthesizer ............. HP 3335A Adapters Type N (m) to BNC (f) ............1250-1476 Cables BNC, 122 cm (48 in) ............HP10503A Test cable ..............85680-60093...
Page 82: Procedure
84. See Figure 2-9 on page 85 for adjustment location. 2. Connect the HP 3335A 50 Ω output to the HP 8560E/EC 50 Ω input. Press to turn the spectrum analyzer on. LINE 3. Set the HP 8560E/EC controls as follows: Center frequency ....
Page 83: A4 Log Fidelity Adjustment
Figure 2-6 on page 75. See Figure 2-7 on page 76 for adjustment location. 2. Connect the HP 3335A 50 Ω output to the HP 8560E/EC 50 Ω input. Press to turn the spectrum analyzer on. LINE 3. Press PRESET...
Page 84 Adjustment Procedures 5. DC Log Ampliﬁer Adjustments 6. Press and decrease the source power to MARKER DELTA −26 dBm. 7. Calculate the error. The error = Delta Marker reading + 16 (in dB). 8. Set the source power to −10 dBm. 9.
Page 85: Sampling Oscillator Adjustment
Figure 2-8 Sampler Adjustment Setup Equipment Digital voltmeter ............... HP 3456A DVM test leads ............... HP 34118A Procedure 1. Press to turn the spectrum analyzer off and disconnect the line LINE power cord. Remove the spectrum analyzer cover and fold down the A15 RF and A14 frequency control assemblies.
Page 86: Sampling Oscillator Adjustment
Adjustment Procedures 6. Sampling Oscillator Adjustment 2. Press on the HP 8560E/EC and set the controls as follows: PRESET Center frequency ............2126 MHz Span ................... 0 Hz 3. Set the HP 3456A controls as follows: Function ..............DC VOLTS Range ..
Page 87: Table 2-11 Sampling Adjustments
HP 8560E/EC to this frequency. 8. Readjust SMPL MATCH to set the displayed voltage to 0.8 ±0.1 Vdc. 9. Set the HP 8560E/EC center frequency to 2302.3 MHz and repeat steps 9 through 13. 10.Move the positive DVM test lead to A15J400 pin 3. Check that the measured voltage is the negative of the voltage at pin 1, within ±0.1...
Page 88: Yto Adjustment
Type N (f) to APC 3.5 (f) (Option 026 only) ....1250-1745 APC 3.5 (f) to APC 3.5 (f) .......... 5061-5311 Cables BNC, 122 cm (48 in) ..........HP 10503A SMA, 61 cm (24 in) ............ 8120-1578 Chapter 2...
Page 89: Procedure
3. Move the jumper on A14J23 from the NORM position (pins 1 and 2 jumpered) to the TEST position (pins 2 and 3 jumpered). 4. If the HP 8560E/EC spectrum analyzer does not have Option 002, press the following keys:...
Page 90 7. Adjust A14R93 3.2 GHz for the appropriate frequency counter reading: 3.200 GHz ±1 MHz 3.911 GHz ±1 MHz if Option 002 8. On the HP 8560E/EC, press STATE 1 9. Adjust A14R42 6.01 GHz for a frequency counter reading of 6.010 GHz ±1 MHz.
Page 91: Yto Fm Coil Adjustments
Adjustment Procedures 7. YTO Adjustment Figure 2-11 YTO Adjustment Locations YTO FM Coil Adjustments 1. On the HP 8560E/EC, press and set the controls as follows: PRESET Center frequency ........ 300 MHz Span ............20 MHz 2. Adjust A14R76 FM SPAN until the 300 MHz CAL OUTPUT SIGNAL is aligned with the center vertical graticule line.
Page 92: First Lo Distribution Amplifier Adjustment
A7. Figure 2-12 First LO Distribution Ampliﬁer Adjustment Setup Equipment Measuring receiver............HP 8902A DVM ................HP 3456A Power sensor ..............HP 8485A DVM test leads ............HP 34118A Chapter 2...
Page 93: Procedure
The jumper is on the edge of the A2 board assembly and can be moved without folding the board down. 3. Reconnect the line cord and turn on the spectrum analyzer. 4. Set the HP 8560E/EC controls as follows: Center frequency ........1.45 GHz Span ............. 0 Hz 5.
Page 94 Adjustment Procedures 8. First LO Distribution Ampliﬁer Adjustment DAC value for 1.45 GHz = ____________________________ 14.Set the "Sense EXT" value by pressing EXT LO LEVEL 15.Use the knob or keypad to enter the DAC value for 1.45 GHz from the band 0 sense voltage adjustment above. 16.Save the adjustment values by pressing PREV MENU STORE...
Page 95: Tracking Generator Power Level Adjustments (Option 002)
TRK GEN RF POWER of 0 dBm. These two adjustments must be iterated until the power level at the two settings are within the given tolerance. Equipment Measuring receiver ............HP 8902A Power sensor ..............HP 8482A Cable Type N, 62 cm (24 in) ..........HP 11500B/C Chapter 2...
Page 96: Procedure
2. Connect the Type N cable between the RF OUT 50Ω and RF INPUT 50Ω connectors on the HP 8560E/EC. 3. Press on the HP 8560E/EC and set the controls as follows: PRESET Center frequency ..........300 MHz Span..............0 Hz...
Page 97 300 MHz Cal Factor into the measuring receiver. 7. Disconnect the Type N cable from the RF OUT 50Ω and connect the power sensor to the RF OUT 50Ω. 8. On the HP 8560E/EC, press 0, , and SGL SWP 9.
Page 98: Frequency Response Adjustment
Adjustment Procedures 10. Frequency Response Adjustment 10. Frequency Response Adjustment Assembly Adjusted A15 RF assembly Related Performance Tests Displayed Average Noise Level Frequency Response Description A signal of the same known amplitude is applied to the spectrum analyzer at several different frequencies. At each frequency, the DAC controlling the ﬂatness compensation ampliﬁers is adjusted to place the peak of the displayed signal at the same place on the screen.
Page 99: Equipment
Type N (m) to Type N (m) ..........1250-1475 Type N (m) to APC 3.5 (f)..........1250-1744 Type APC 3.5 (f) to APC 3.5 (f) ......... 5061-5311 Cables BNC, 122 cm (48 in) ............HP 10503A APC 3.5, 91 cm (36 in)............8120-4921 Chapter 2...
Page 100: Procedure
HP 8482A Power Sensor to the HP 11667B Power Splitter. 2. Zero and calibrate the HP 8902A/HP 8482A combination in log mode (power levels read out in dBm) and connect the power sensor through an adapter to the power splitter.
Page 101 Adjustment Procedures 10. Frequency Response Adjustment 10.On the HP 8560E/EC spectrum analyzer, adjust the RF Gain DAC value using the front panel knob or keypad until the marker reads −10 dBm ±0.10 dB. Each DAC count yields an approximate 0.01 dB change.
Page 102: Calibrator Amplitude Adjustment
The CAL OUTPUT amplitude is adjusted for −10.00 dBm measured directly at the front panel CAL OUTPUT connector. Figure 2-16 Calibrator Amplitude Adjustment Setup Equipment Measuring receiver ............HP 8902A Power sensor ..............HP 8482A Adapters Type N (f) to BNC (m) ........... 1250-1477 Chapter 2...
Page 103: Procedure
Adjustment Procedures 11. Calibrator Amplitude Adjustment Procedure The HP 8560E/EC should be allowed to warm up for at least 30 minutes NOTE before performing this adjustment. 1. Place the HP 8560E/EC in the service position shown in Figure 2-16 on page 101.
Page 104: Mhz Reference Adjustment-Tcxo (Option 103)
Adjustment Procedures 12. 10 MHz Reference Adjustment-TCXO (Option 103) 12. 10 MHz Reference Adjustment-TCXO (Option 103) Assembly Adjusted A15 RF assembly Related Performance Test 10 MHz Reference Output Accuracy Description The frequency counter is connected to the CAL OUTPUT, which is locked to the 10 MHz reference.
Page 105: Equipment
(or any 10 MHz frequency standard with accuracy <±1 X 10 Cables BNC, 122 cm (2 required) ..........HP 10503A Procedure Allow the HP 8560E/EC spectrum analyzer to warm up for at least 30 NOTE minutes before performing this adjustment. 1. Connect the equipment as shown in Figure 2-17 on page 103.
Page 106: Demodulator Adjustment
Adjustment Procedures 13. Demodulator Adjustment 13. Demodulator Adjustment Assembly Adjusted A4 log ampliﬁer assembly Related Performance Test There is no related performance test for this adjustment procedure. Description A 5 kHz peak deviation FM signal is applied to the INPUT 50Ω. The detected audio is monitored by an oscilloscope.
Page 107: Equipment
Modulation frequency .............1000 Hz Peak deviation ..............5 kHz Scale FM ................(k/MHz) 4. Adjust the HP 8640B FM deviation vernier for a full-scale reading on the meter. Set the FM to off. 5. Set the oscilloscope controls as follows: Channel 1 ..........
Page 108: Figure 2-19 . Demodulator Adjustment Locations
SWEEP CONT SGL Set the volume control to midrange. 8. Set the HP 8640B FM to INT. 9. A 1 kHz sine wave should be observed on the oscilloscope. Rotate the volume knob on the front panel of the spectrum analyzer until the amplitude of the 1 kHz signal is at about 150 mV (3 divisions on the oscilloscope).
Page 109: External Mixer Bias Adjustment
There is no related performance test for this adjustment procedure. Description A voltmeter is connected to the HP 8560E/EC IF INPUT with the external mixer bias set to off. The bias is adjusted for a 0 Vdc output. Figure 2-20...
Page 110: Procedure
108. Reconnect the power cord and press to turn the spectrum analyzer on. LINE 2. Set the HP 3456A controls as follows: Function ..............DC VOLTS Range .................. 0.1 V Resolution ..............100 mV 3. On the HP 8560E/EC, press...
Page 111: External Mixer Amplitude Adjustment
IF INPUT. The ﬂatness compensation ampliﬁers are then adjusted (via DACs) to place the displayed signal at the reference level. Only the determination of the Flatness Compensation Ampliﬁer slope is performed if the HP 8560E/EC has Option 002. Figure 2-21 External Mixer Amplitude Adjustment Setup...
Page 112: Equipment
. Wait until the CAL DATA 3RD IF AMP CAL 3RD AMP GAIN message ADJUSTMENT-DONE appears in the active function block. Perform steps 6 through 13 only if the HP 8560E/EC does not have NOTE Option 002. ⇓ ⇓ 6. Press...
Page 113: Table 2-12 Conversion Loss Data
HP 8902A RF power connector. Zero and calibrate the HP 8902A/power sensor combination in log mode. Enter the power sensor 50 MHz Cal Factor into the HP 8902A. Connect the power sensor, through an adapter, to the SMA cable.
Page 114 Adjustment Procedures 15. External Mixer Amplitude Adjustment 13.Use the HP 8560E/EC front panel knob, step keys, or keypad to change the amplitude of the displayed signal until the marker reads 0 dBm ±0.17 dB. 14.Press on the HP 8560E/EC. PREV MENU STORE DATA 15.Place the WR PROT/ WR ENA jumper on the A2 Controller...
Page 115: Signal Id Oscillator Adjustment (Serial Prefix 3517A And Below)
Adjustment Procedures 16. Signal ID Oscillator Adjustment (serial preﬁx 3517A and below) 16. Signal ID Oscillator Adjustment (serial preﬁx 3517A and below) Assembly Adjusted A15 RF assembly Related Performance Test There is no related performance test for this adjustment. Description This adjustment applies only to spectrum analyzers with A15 RF NOTE assembly 08563- 60083 or earlier (serial preﬁx 3517A and below).
Page 116: Equipment
Spectrum analyzer ............. HP 8566A/B Adapters Type N (m) to BNC (f) (2 required) ......1250-1476 BNC tee (f, m, f) .............1250-0781 Cables Test cable, BNC (m) to SMB (f) ........85680-60093 BNC, 122 cm (48 in) (2 required) ....... HP 10503A Chapter 2...
Page 117: Procedure
RF and A14 frequency control assemblies. Prop up the A14 frequency control assembly. 2. Connect the HP 8560E/EC CAL OUTPUT to the INPUT 50Ω using an adapter. Disconnect the W29 cable from A15J601 (10.7 MHz IF out) and connect the SMB end of the test cable to A15J601. Connect...
Page 118 50 Ω — 1 MΩ SWITCH ............50 Ω 10 Hz — 500 MHz/500 MHz — 26.5 GHz switch ....10 Hz — 500 MHz 9. If no signal is displayed on the HP 8566A/B, adjust A15C629 SIG ID until a signal is displayed.
Page 119: Mhz Reference Adjustment-Ocxo (Non-Option 103)
Adjustment Procedures 17. 10 MHz Reference Adjustment-OCXO (Non-Option 103) 17. 10 MHz Reference Adjustment-OCXO (Non-Option 103) Assembly Adjusted A21 OCXO assembly Replacement oscillators are factory adjusted after a complete warmup NOTE and after the speciﬁed aging rate has been achieved. Thus, readjustment should typically not be necessary after oscillator replacement and is generally not recommended.
Page 120: Equipment
Frequency standard..... HP 5061B Cesium Beam Standard −10 (or any 10 MHz frequency standard with accuracy <±1 X 10 Cable BNC, 122 cm (2 required)..........HP 10503A Procedure Failure to allow a 24 hour minimum warmup time for OCXO frequency NOTE and temperature stabilization may result in oscillator misadjustment.
Page 121 Auto trigger ................ON 100 kHz ﬁlter A ..............OFF INT/EXT switch (rear panel) .......... EXT 3. Select a 1 second gate time on the HP 5334A/B frequency counter by pressing , 1, and GATE TIME GATE TIME 4.
Page 122 Adjustment Procedures 17. 10 MHz Reference Adjustment-OCXO (Non-Option 103) now display the difference between the frequency of the INPUT A signal and 10.0 MHz with a resolution of 0.001 Hz (1 MHz). 9. Wait at least two gate periods for the frequency counter to stabilize, then adjust the FREQ ADJ control on A21 OCXO for a stable frequency counter reading of 0.000 Hz ±0.010 Hz.
Page 123: 18. Tracking Oscillator Adjustment
Alignment tool, non-metallic ........8710-0033 Cables SMA, 91 cm (36 in) ............5061-5458 BNC, 122 cm (48 in) (3 required) ........ HP 10503A Adapters APC 3.5 (f) to APC 3.5 (f) ..........5061-5311 .
Page 124: Procedure
1. Remove the A10 tracking generator assembly as described in Chapter 3. With the A10 tracking generator positioned next to the HP 8560E/EC, reconnect W14 (10-wire ribbon cable) to A10J1. Reconnect W48 to A10J8. Connect the 50 Ω termination to A10J3.
Page 125 , and TRACKING GENRATOR SRC PWR ON AUX CTRL REAR PANEL . Allow the HP 8560E/EC to warm up for at least 5 10 MHz EXT minutes. Set the controls as follows: Center frequency ............300 MHz Span..................0 Hz 4.
Page 126: Table 2-13 Tracking Oscillator Range Centering
A10C3 TRK OSC CTR is necessary. 16.Press to turn the spectrum analyzer off. Replace the dust cap LINE screw on A10. Disconnect all cables from A10. 17.Reinstall A10 in the HP 8560E/EC. Table 2-13 Tracking Oscillator Range Centering F1 (MHz) F2 (MHz)
Page 127: Mhz Pll Adjustment
Adjustment Procedures 19. 16 MHz PLL Adjustment 19. 16 MHz PLL Adjustment This adjustment applies only to spectrum analyzers with A2 controller NOTE assemblies other than 08563-60017. Assembly Adjusted A2 controller assembly Related Performance Tests Sweep Time Accuracy Gate Delay Accuracy and Gate Length Accuracy Delayed Sweep Accuracy Fast Sweep Time Accuracy (Option 007) Description In spectrum analyzers with serial preﬁx numbers greater than or equal...
Page 128: Equipment
Adjustment Procedures 19. 16 MHz PLL Adjustment Figure 2-26 16 MHz PLL Adjustment Setup Equipment Microwave frequency counter ........HP 5343A 10:1 probe ..............HP 10432A Procedure 1. Press to turn the spectrum analyzer off. Remove the spectrum LINE analyzer cover and fold out the A2 controller and A3 interface assemblies.
Page 129: Figure 2-27 16 Mhz Pll Adjustment Location
5. Set the microwave frequency counter as follows: Sample rate ................ Fully counterclockwise 10 Hz — 500 MHz/500 MHz — 26.5 GHz Switch....10 Hz — 500 MHz 50 Ω/1 MΩ Switch ............1 MΩ 6. On the HP 8560E/EC spectrum analyzer, press AUX CTRL REAR , and...
Page 130 Adjustment Procedures 19. 16 MHz PLL Adjustment 7. Disconnect W22 (10 MHz frequency counter) from A2J8. The display will probably appear distorted and error messages may appear. Ignore the error messages. 8. Adjust A2R152 (16 MHz PLL ADJ) until the microwave frequency counter reads 14.4 MHz ±...
Page 131: Mhz Reference Adjustment (Serial Prefix 3406A And Above)
LINE analyzer on. 5. Set the center frequency of the HP 8566A/B to 600 MHz, and set the frequency span and resolution bandwidth of the HP 8566A/B for the best display of the 600 MHz signal.
Page 132: 2A. Adjustment Procedures: Hp 3335A Source Not Available
Adjustment Procedures: HP 3335A Source not Available...
Page 133: What You'll Find In This Chapter
What You'll Find in This Chapter This chapter provides alternative procedures for the adjustment of the spectrum analyzer that do not require the use of the HP 3335A Synthesizer Level Generator. The HP 3335A has been obsoleted. Because of the unavailability of the HP 3335A, new adjustment procedures are required that use different signal sources.
Page 134: Required Test Equipment
Required Test Equipment Required Test Equipment The following table lists the test equipment required to execute the adjustments in this chapter. These adjustments originally required the use of the HP 3335A Synthesizer Level Generator. Table 2a-1 Recommended Test Equipment Instrument Critical Speciﬁcations for Equipment...
Page 135: 4A. If Amplitude Adjustments
Cables BNC, 122 cm (48 in) ......HP 10503A Test cable ....... . 85680-60093...
Page 136: A4 Log Amp/Cal Oscillator Amplitude Adjustment
Adjustment Procedures: HP 3335A Source not Available 4a. IF Amplitude Adjustments Figure 2a-2 IF Amplitude Adjustment Locations A4 Log Amp/Cal Oscillator Amplitude Adjustment This adjustment sets the output amplitude of the cal oscillator on the A4 assembly, and the absolute amplitude of the reference 15 dB attenuator.
Page 137: Procedure
Figure 2a-1. See Figure 2a-2 for adjustment location. 2. Disconnect W29, violet coax cable, from A5J3. Connect the test cable between A5J3 and the RF output of the HP E4421B. Press LINE turn the spectrum analyzer on.
Page 138: A5 Reference Attenuator Adjustment
A5 Reference Attenuator Adjustment to −60 dBm. 1. Set the HP E4421B AMPLITUDE 2. Connect a BNC cable between the RF output of the HP E4421B and the spectrum analyzer INPUT 50Ω. 3. On the spectrum analyzer, press . Use...
Page 139 Adjustment Procedures: HP 3335A Source not Available 4a. IF Amplitude Adjustments 6. On the spectrum analyzer, reconnect W29 to A5J3. Press PRESET and set the controls as follows: Center frequency ......300 MHz Span .
Page 140: 5A. Dc Log Amplifier Adjustments
Cables BNC, 122 cm (48 in) ......HP 10503A Test cable ....... . . 85680-60093...
Page 141: Figure 2A-3 If Amplitude Adjustment Setup
Adjustment Procedures: HP 3335A Source not Available 5a. DC Log Ampliﬁer Adjustments Figure 2a-3 IF Amplitude Adjustment Setup Figure 2a-4 IF Amplitude Adjustment Locations Chapter 2...
Page 142: A4 Limiter Phase Adjustment
Figure 2a-3. See Figure 2a-4 for adjustment location. 2. Connect the HP E4421B RF output to the spectrum analyzer 50Ω input. Press to turn the spectrum analyzer on.
Page 143: Procedure
Figure 2a-3. See Figure 2a-4 for adjustment location. 2. Connect the HP E4421B RF output to the spectrum analyzer 50Ω input. Press to turn the spectrum analyzer on.
Page 144: A4 Log Fidelity Adjustment
Figure 2a-3. See Figure 2a-4 for adjustment location. 2. Connect the HP E4421B RFΩ output to the spectrum analyzer 50Ω input. Press to turn the spectrum analyzer on.
Page 145 Adjustment Procedures: HP 3335A Source not Available 5a. DC Log Ampliﬁer Adjustments Chapter 2...
Page 146: Assembly Replacement
Assembly Replacement...
Page 147: Introduction
Procedure 2A. A1 Front Frame/A18 LCD (8560EC) ..page 150 W3 Line Switch Cable (8560EC) ........page 153 Procedure 2B. A1 Front Frame/A18 CRT (8560E) .... page 160 Procedure 3. A1A1 Keyboard/Front Panel Keys....page 169 Procedure 4. A1A2 RPG............
Page 148: Access To Internal Assemblies
Access to Internal Assemblies Access to Internal Assemblies Servicing the HP 8560E/EC requires the removal of the spectrum analyzer cover assembly and the folding down of six board assemblies. Four of these assemblies lay ﬂat along the top of the spectrum analyzer and two lay ﬂat along the bottom of the spectrum analyzer.
Page 149: Cable Color Code
For example, W23, coax 93, indicates a white cable with an orange stripe. Table 3-1 Required Tools Description HP Part Number 5/16-inch open-end wrench 8720-0015 3 mm hex (Allen) wrench...
Page 150: Procedure 1. Spectrum Analyzer Cover
1. Disconnect the line-power cord, remove any adapters from the front panel connectors, and place the spectrum analyzer on its front panel. 2. If an HP 85620A Mass Memory Module or HP 85629B Test and Adjustment Module is mounted on the rear panel, remove it. Loosen (but do not remove) the four rear-bumper screws, using a 4 mm hex wrench.
Page 151: Procedure 2A. A1 Front Frame/A18 Lcd (8560Ec)
Assembly Replacement Procedure 2A. A1 Front Frame/A18 LCD (8560EC) Procedure 2A. A1 Front Frame/A18 LCD (8560EC) Removal of the Front Frame 1. Remove the spectrum analyzer cover assembly as described in "Procedure 1. Spectrum Analyzer Cover." Place the instrument on its side, with the display section upper-most, as shown in Figure 3-1 on page...
Page 152 Assembly Replacement Procedure 2A. A1 Front Frame/A18 LCD (8560EC) 8. Disconnect the following connectors which are attached to the inside of the A1 front panel assembly: a. INPUT 50 Ω RF connector. Use a 5/16-inch open-end wrench to disconnect cable W41 from the front panel. Loosen the opposite end of cable W41, which is connected to the attenuator.
Page 153: Removal Of The Display Driver Board, Inverter Board, And Lcd
Assembly Replacement Procedure 2A. A1 Front Frame/A18 LCD (8560EC) Removal of the Display Driver Board, Inverter Board, and LCD After the front panel has been removed, follow these steps to remove the display driver and LCD: 1. Disconnect the following cables from the A17 display driver board. These can be disconnected through openings in the display driver shield.
Page 154: Removal Of The Backlights
Assembly Replacement Procedure 2A. A1 Front Frame/A18 LCD (8560EC) 10.Carefully lift the display driver backplate over the two backlight cables and the W63 ribbon cable. 11.Remove the LCD assembly from the black rubber mount Take care not to damage the backlight cables or W63 ribbon cable. 12.To remove the glass plate, ﬁrst remove the LCD display from the display mount.
Page 155: Figure 3-2 Lcd Assembly - Exploded View
Assembly Replacement Procedure 2A. A1 Front Frame/A18 LCD (8560EC) Figure 3-2 LCD Assembly - Exploded View Chapter 3...
Page 156: Removal Of The Keyboard
Assembly Replacement Procedure 2A. A1 Front Frame/A18 LCD (8560EC) Removal of the Keyboard 1. Disconnect cable A1A1W1 from HDR1 on the A1 front panel assembly and from A3J602 on the A3 interface board. 2. Disconnect the power probe cable from the probe power connector on the front frame PC board.
Page 157 Assembly Replacement Procedure 2A. A1 Front Frame/A18 LCD (8560EC) while tightening the connector inside the instrument with the 5/16-inch socket. d. 1ST LO OUTPUT connector for Option 002 spectrum analyzers. Connect W46 from the front panel. e. IF INPUT connector. Connect W36 from the front panel. 6.
Page 158: Replacement Of The Display Driver Board, Inverter Board, And Lcd
Assembly Replacement Procedure 2A. A1 Front Frame/A18 LCD (8560EC) Replacement of the Display Driver Board, Inverter Board, and LCD Follow these steps to replace the A18 LCD assembly, the A17 display driver, and the A17A1 inverter board. If the line switch assembly has been removed from the front panel, it NOTE must be replaced before you replace the display driver and LCD assemblies.
Page 159: Replacing The Backlights
Assembly Replacement Procedure 2A. A1 Front Frame/A18 LCD (8560EC) 8. Place the A17 display driver board on the four black cushions. Insert the four screws (0515-0372) that secure the A17 display driver board to the LCD backplate, into the posts on which you have set the cushions.
Page 160: Replacement Of The Line Switch
Assembly Replacement Procedure 2A. A1 Front Frame/A18 LCD (8560EC) Whenever there is a need to replace a single backlight, both backlights NOTE must be replaced. 3. Insert the LCD into the display mount. The LCD assembly is correctly oriented when the small ribbon cable extends through an opening in the right side of the display mount.
Page 161: Procedure 2B. A1 Front Frame/A18 Crt (8560E)
Make sure that the spectrum analyzer line-power switch is in the off position. 6. Connect a high voltage probe (1000:1), such as the HP 34111A to a voltmeter with a 10 megohm input. 7. Connect the clip lead of the probe (ground) to the chassis of the spectrum analyzer.
Page 162 Assembly Replacement Procedure 2B. A1 Front Frame/A18 CRT (8560E) 11.Connect one end of a wire clip lead to a small screwdriver having a conductive shank and tip. Connect the other end of the clip lead to the CRT shield assembly as shown in Figure 3-3 on page 162.
Page 163: Figure 3-3 Discharging High Voltage On The Crt
Assembly Replacement Procedure 2B. A1 Front Frame/A18 CRT (8560E) Figure 3-3 Discharging High Voltage on the CRT Chapter 3...
Page 164: Figure 3-4 A9, A18, And Line Switch Assembly Mounting Screws
Assembly Replacement Procedure 2B. A1 Front Frame/A18 CRT (8560E) Figure 3-4 A9, A18, and Line Switch Assembly Mounting Screws 17.Remove screw (2) securing the A9 input attenuator assembly to the center support on the front frame. See Figure 3-4 on page 163.
Page 165: Figure 3-5 Front Frame Mounting Screws
Assembly Replacement Procedure 2B. A1 Front Frame/A18 CRT (8560E) 22.Remove the VOLUME knob and potentiometer from the front panel. If necessary, drill out the nut driver used to remove the VOLUME potentiometer and cover the tip with heatshrink tubing or tape to avoid scratching the enameled front panel.
Page 166: Replacement
Use care when handling the glass CRT EMI shield. The glass may be NOTE cleaned using thin ﬁlm cleaner (HP part number 8500-2163) and a lint-free cloth. When installing the glass shield, face the side of the glass with the silver coated edge towards the inside of the spectrum analyzer.
Page 167: Figure 3-7 Placing The Crt Into The Front Frame
Assembly Replacement Procedure 2B. A1 Front Frame/A18 CRT (8560E) 2. Gently place the A18 CRT assembly into the A1 front frame assembly as illustrated in Figure 3-7 on page 166. 3. Place the front frame and CRT assemblies into the spectrum analyzer, using caution to avoid pinching any cables.
Page 168 Assembly Replacement Procedure 2B. A1 Front Frame/A18 CRT (8560E) 5. Connect A18W1 to A17J5. 6. Snap CRT cable W9 onto the end of the CRT assembly. 7. Fully seat the front frame and CRT assemblies into the spectrum analyzer. 8. Secure the front frame to the spectrum analyzer side frames, using three ﬂathead screws per side.
Page 169 Assembly Replacement Procedure 2B. A1 Front Frame/A18 CRT (8560E) 24.Replace the spectrum analyzer cover assembly. 25.Connect the line-power cord and switch the spectrum analyzer power on. If the display does not operate properly, turn off spectrum analyzer power, disconnect the line cord, and recheck the spectrum analyzer.
Page 170: Procedure 3. A1A1 Keyboard/Front Panel Keys
4. Remove the nine screws holding the A1A1 keyboard assembly to the front frame and remove the assembly. 5. Remove the rubber keypad. In 8560E instruments, the front panel softkey actuators are part of the NOTE CRT bezel assembly and are not replaceable. Should the softkeys become damaged, replace the bezel assembly.
Page 171: Procedure 4. A1A2 Rpg
2. Disconnect the RPG cable from the A1A1 keyboard assembly. 3. If the serial number of your instrument is above or equal to 3738A03198 (8560E/EC) proceed to step a. If the serial number of your instrument is below3738A03198 (8560E) proceed to step b.
Page 172: Procedure 5. A2, A3, A4, And A5 Assemblies
Assembly Replacement Procedure 5. A2, A3, A4, and A5 Assemblies Procedure 5. A2, A3, A4, and A5 Assemblies Removal 1. Remove the spectrum analyzer cover. 2. Place the spectrum analyzer on its right side frame. 3. Remove the eight screws holding the A2, A3, A4, and A5 assemblies to the top of the spectrum analyzer.
Page 173: Replacement
Assembly Replacement Procedure 5. A2, A3, A4, and A5 Assemblies Figure 3-8 A2, A3, A4, and A5 Assembly Removal Replacement 1. Place the spectrum analyzer on its right side on the work bench. 2. Attach the assembly being installed to the two chassis hinges with two panhead screws.
Page 174: Figure 3-9 . Assembly Cables (1 Of 3) − Ec-Series
Assembly Replacement Procedure 5. A2, A3, A4, and A5 Assemblies that the coaxial cables are routed properly on the clip as illustrated Figure 3-12 on page 175 for EC-series instruments, and in Figure 3-13 on page 176 for E-series instruments. 6.
Page 175: Figure 3-10 Assembly Cables (2 Of 3) − Ec-Series
Assembly Replacement Procedure 5. A2, A3, A4, and A5 Assemblies Assembly Cables (2 of 3) − EC-series Figure 3-10 Figure 3-11 Assembly Cables (3 of 3)− E-series Chapter 3...
Page 176: Figure 3-12 Coaxial Cable Clip − Ec-Series
Assembly Replacement Procedure 5. A2, A3, A4, and A5 Assemblies Coaxial Cable Clip − EC-Series Figure 3-12 7. Check to ensure that no cables will become pinched under the hinges when folding up the A4 and A5 assemblies. Chapter 3...
Page 177: Figure 3-13 Coaxial Cable Clip − E-Series
9. Fold the A2 and A3 assemblies together as a unit into the spectrum analyzer. Be sure to fold HP-IB cable A19W1 between the A3 and A4 assemblies, using the two sets of hook and loop (Velcro) fasteners.
Page 178: Figure 3-14 Hp-Ib And A1A1 W1 Cable Placement
Assembly Replacement Procedure 5. A2, A3, A4, and A5 Assemblies Figure 3-14 HP-IB and A1A1 W1 Cable Placement Chapter 3...
Page 179: Procedure 6A. A6 Power Supply Assembly (8560Ec)
Assembly Replacement Procedure 6A. A6 Power Supply Assembly (8560EC) Procedure 6A. A6 Power Supply Assembly (8560EC) Removal The A6 Power Supply assembly contains lethal voltages with WARNING lethal currents in all areas. Use extreme care when servicing this assembly. Always disconnect the power cord from the instrument before beginning this replacement procedure.
Page 180: Figure 3-15 Power Supply Cover
Assembly Replacement Procedure 6A. A6 Power Supply Assembly (8560EC) Figure 3-15 Power Supply Cover Chapter 3...
Page 181: Replacement
Assembly Replacement Procedure 6A. A6 Power Supply Assembly (8560EC) Replacement 1. Ensure that the bottom shield wall is in place before replacing the A6 power supply assembly. 2. Attach the A6 power supply assembly to the spectrum analyzer chassis and top shield wall using the four screws, torqued to 10-inch lbs.
Page 182: Procedure 6B. A6 Power Supply Assembly (8560E)
Make sure that the spectrum analyzer line-power switch is in the off position. 6. Connect a high voltage probe (1000:1), such as the HP 34111A to a voltmeter with a 10 megohm input. 7. Connect the clip lead of the probe (ground) to the chassis of the spectrum analyzer.
Page 183: Replacement
Assembly Replacement Procedure 6B. A6 Power Supply Assembly (8560E) 10.Disconnect the line-power cord from the spectrum analyzer. 11.Using a small screwdriver with the shank in contact with the CRT shield assembly, slip the tip of the screwdriver under the A6A1W3 post-accelerator cable rubber shroud and short the cable to ground on the CRT shield assembly.
Page 184: Figure 3-17 A6 Power Supply Connections
Assembly Replacement Procedure 6B. A6 Power Supply Assembly (8560E) Figure 3-17 A6 Power Supply Connections 6. Ensure that all cables are safely routed and will not be damaged when securing the A6 cover. 7. Secure the power supply cover shield to the power supply using three ﬂathead screws (1).
Page 185 Assembly Replacement Procedure 6B. A6 Power Supply Assembly (8560E) wall groove. 8. Fold the A2, A3, A4, and A5 assemblies into the spectrum analyzer as described in steps 6 through 12 under "Procedure 5. A2, A3, A4, and A5 Assemblies Replacement."...
Page 186: Procedure 7. A6A1 High Voltage Assembly (8560E Only)
Make sure that the spectrum analyzer line-power switch is in the off position. 6. Connect a high voltage probe (1000:1), such as the HP 34111A to a voltmeter with a 10 megohm input. 7. Connect the clip lead of the probe (ground) to the chassis of the spectrum analyzer.
Page 187 Assembly Replacement Procedure 7. A6A1 High Voltage Assembly (8560E only) shield assembly, slip the tip of the screwdriver under the A6A1W3 post-accelerator cable rubber shroud and short the cable to ground on the CRT shield assembly. See Figure 3-3 on page 162.
Page 188: Replacement
Assembly Replacement Procedure 7. A6A1 High Voltage Assembly (8560E only) Figure 3-19 A17 CRT Driver Mounting Screws Replacement 1. Secure the A6A1 high voltage assembly to the A6 power supply using three panhead screws. Connect ribbon cable A6A1W1 to A6J5.
Page 189 Assembly Replacement Procedure 7. A6A1 High Voltage Assembly (8560E only) Ensure that the A16 FADC assembly is properly seated in the right end of the slot. 9. Secure the A17 assembly (and A16 assembly in Option 007) with the two ﬂathead screws removed in step 18 under "Removal." See...
Page 190: Procedure 8. A7 Through A13 Assemblies
Figure 3-21 on page 191 provides the colors and locations of the assembly bias wires. Use a torque wrench (HP part number 8710-1655) to tighten all SMA NOTE connectors to 113 Ncm (10 in-lb). The style of the torque wrench may vary, but in all cases do not tighten the connectors beyond the point at which the torque wrench "clicks"...
Page 191: Figure 3-20 Assembly Locations
Assembly Replacement Procedure 8. A7 through A13 Assemblies Figure 3-20 Assembly Locations Chapter 3...
Page 192: A7 1St Lo Distribution Amplifier
Assembly Replacement Procedure 8. A7 through A13 Assemblies Figure 3-21 RF Section Bias Connections A7 1st LO Distribution Ampliﬁer Removal 1. Remove the two screws securing the assembly to the spectrum analyzer center deck. 2. Use a 5/16-inch wrench to disconnect W38 and W39 at A7J1 and J2. 3.
Page 193: A8 Low Band Mixer
Assembly Replacement Procedure 8. A7 through A13 Assemblies 4. Remove the gate bias wire, color code 97, and W12 from the A7 assembly. 5. Remove the assembly and disconnect W34. Replacement 1. Use a 5/16-inch wrench to attach W34 to A7J4 and W42 (W43 on Option 002) to A7J3.
Page 194: Figure 3-22 A9 Mounting Screws At Right Frame
Assembly Replacement Procedure 8. A7 through A13 Assemblies 3. Remove screw (1) securing the attenuator to the front frame center support. See Figure 3-21 on page 191. 4. Remove screw (1) securing the A9 input attenuator to the right side frame.
Page 195: A10 Tracking Generator (Option 002)
Assembly Replacement Procedure 8. A7 through A13 Assemblies A10 Tracking Generator (Option 002) Removal 1. Use a 5/16-inch wrench to remove the A10 tracking generator RF OUT, LO OUT, and LO IN semi-rigid cables. 2. Disconnect W14 and W16 from the A10 tracking generator. 3.
Page 196: A11 Yto
Assembly Replacement Procedure 8. A7 through A13 Assemblies deck using the three screws removed in step 3 under "Removal." 5. Torque the semi-rigid cables to 113 Ncm (10 in-lb). 6. Connect W14 and W16 to the A10 tracking generator. A11 YTO Removal 1.
Page 197: A13 Second Converter
Assembly Replacement Procedure 8. A7 through A13 Assemblies 4. Connect W38 to A11. 5. Install W56/FL2/W57. Ensure that all of the connections are tight. Torque all SMA connectors to 113 Ncm (10 in-lb). 6. If the spectrum analyzer is an Option 002, install the A10 tracking generator.
Page 198: Procedure 9. A14 And A15 Assemblies
Assembly Replacement Procedure 9. A14 and A15 Assemblies Procedure 9. A14 and A15 Assemblies Removal 1. Remove the spectrum analyzer cover as described in "Procedure 1. Spectrum Analyzer Cover." 2. Place the spectrum analyzer on its right side frame. 3. Remove the eight screws (1) holding the A14 and A15 assemblies to the bottom of the spectrum analyzer.
Page 199: Replacement
Assembly Replacement Procedure 9. A14 and A15 Assemblies DO NOT fold the board assemblies out of the spectrum analyzer one at CAUTION a time. Always fold the A14 and A15 assemblies as a unit. Folding out one assembly at a time binds the hinges attaching the assemblies and may damage an assembly and hinge.
Page 200: Figure 3-26 A14 And A15 Assembly Cables
Assembly Replacement Procedure 9. A14 and A15 Assemblies Figure 3-26 A14 and A15 Assembly Cables Chapter 3...
Page 201: Procedure 10. A16 Fadc/A17 Crt Driver (8560E )
Assembly Replacement Procedure 10. A16 FADC/A17 CRT Driver (8560E ) Procedure 10. A16 FADC/A17 CRT Driver (8560E ) Removal 1. Remove the spectrum analyzer cover assembly and fold out the A2, A3, A4, and A5 assemblies as described in steps 3 through 6 under "Procedure 5.
Page 202: Replacement
Assembly Replacement Procedure 10. A16 FADC/A17 CRT Driver (8560E ) Figure 3-27 A16 and A17 Mounting Screws Replacement 1. Connect W7, W8, W9, A6A1W2, and A18W1 to the A17 CRT driver assembly. Place the assembly into the center-deck mounting slot next to the CRT assembly.
Page 203: Figure 3-28 A16 Cable Routing
Assembly Replacement Procedure 10. A16 FADC/A17 CRT Driver (8560E ) Figure 3-28 A16 Cable Routing Chapter 3...
Page 204: Procedure 11. B1 Fan
Assembly Replacement Procedure 11. B1 Fan Procedure 11. B1 Fan Removal/Replacement Always disconnect the power cord from the instrument before WARNING beginning this replacement procedure. Failure to follow this precaution can present a shock hazard which may result in personal injury. 1.
Page 205: Procedure 12. Bt1 Battery
Assembly Replacement Procedure 12. BT1 Battery Procedure 12. BT1 Battery Battery BT1 contains lithium polycarbon monoﬂuoride. Do not WARNING incinerate or puncture this battery. Dispose of discharged battery in a safe manner. To avoid loss of the calibration constants stored on the A2 Controller CAUTION assembly, connect the spectrum analyzer to the main power source and turn on before removing the battery.
Page 206: Procedure 13. Rear Frame/Rear Dress Panel
3. Fold out the A2, A3, A4, and A5 assemblies as described in "Procedure 5. A2, A3, A4, and A5 Assemblies Removal," steps 3 through 5. 4. Disconnect the HP-IB cable at A2J5. 5. Place the spectrum analyzer top-side-up on the work bench with A2 through A5 folded out to the right.
Page 207 Assembly Replacement Procedure 13. Rear Frame/Rear Dress Panel 7. Connect a high-voltage probe (1000:1), such as the HP 34111A to a voltmeter with a 10 megohm input. 8. Connect the clip lead of the probe (ground) to the chassis of the spectrum analyzer.
Page 208: Replacement
Assembly Replacement Procedure 13. Rear Frame/Rear Dress Panel Figure 3-29 Main Deck Screws Replacement 1. If the rear dress panel is removed, secure it to the rear frame using two nuts. Ensure that the dress panel is aligned with the frame. 2.
Page 209 See Figure 3-30. 15.Connect the HP-IB cable to A2J5. 16.Fold the A2, A3, A4, and A5 assemblies into the spectrum analyzer as described in procedure 5. Chapter 3...
Page 210: Figure 3-30 A6 Power Supply Cover
Assembly Replacement Procedure 13. Rear Frame/Rear Dress Panel Figure 3-30 A6 Power Supply Cover Chapter 3...
Page 211: Procedure 14. W3 Line Switch Cable (8560E)
Make sure that the spectrum analyzer line-power switch is in the off position. 6. Connect a high voltage probe (1000:1), such as the HP 34111A, to a voltmeter with a 10 megohm input. 7. Connect the clip lead of the probe (ground) to the chassis of the spectrum analyzer.
Page 212 20.With wire cutters, clip the tie wrap holding the cable to the contact housing. From the top side of the spectrum analyzer, use contact removal tool, HP part number 8710-1791, to remove the four wires from the W3 connector. See Figure 3-33 on page 214.
Page 213: Figure 3-31 W3 Dress And Connection To A6 Power Supply
Assembly Replacement Procedure 14. W3 Line Switch Cable (8560E) cables for the probe power and line switch, and d. remove the line switch. Figure 3-31 W3 Dress and Connection to A6 Power Supply Chapter 3...
Page 214: Figure 3-32 Line Switch Mounting Screw And Cable Dress
Assembly Replacement Procedure 14. W3 Line Switch Cable (8560E) Figure 3-32 Line Switch Mounting Screw and Cable Dress Chapter 3...
Page 215: Figure 3-33 W3 Cable Connector
Assembly Replacement Procedure 14. W3 Line Switch Cable (8560E) Figure 3-33 W3 Cable Connector Chapter 3...
Page 216: Replacement (Using Contact Removal Tool, Hp Part Number 8710-1791)
Assembly Replacement Procedure 14. W3 Line Switch Cable (8560E) Replacement (Using Contact Removal Tool, HP Part Number 8710-1791) 1. Ensure that the action of the switch is working properly. With a pair of wire cutters, clip the tie wrap holding the cable to the contact housing of the replacement W3 assembly.
Page 217: Replacement (Without Contact Removal Tool)
Assembly Replacement Procedure 14. W3 Line Switch Cable (8560E) Replacement (without Contact Removal Tool) 1. Lay the replacement line switch cable assembly between the side frame and main deck. Ensure that the action of the switch is working properly. 2. Attach the left side frame to the deck and rear frame. See...
Page 218: Figure 3-34 Side Frame Mounting Screws
Assembly Replacement Procedure 14. W3 Line Switch Cable (8560E) Figure 3-34 Side Frame Mounting Screws 7. On the top side of the spectrum analyzer, redress W3. 8. Connect W3 to A6J2. Dress W3 into the slotted opening in the deck.
Page 219 Assembly Replacement Procedure 14. W3 Line Switch Cable (8560E) 15.Connect the line-power cord and switch the spectrum analyzer power on. If the spectrum analyzer does not operate properly, turn off the spectrum analyzer power, disconnect the line cord, and recheck the spectrum analyzer.
Page 220: Procedure 15. Eerom (A2U501 Or A2U500)
In newer spectrum analyzers, the EEPROM reference designator is NOTE U500. In older spectrum analyzers, the EEROM reference designator is U501. 1. Turn the HP 8560E/EC switch off. Remove the spectrum LINE analyzer cover assembly and fold out the A2, A3, A4, and A5 assemblies as described in steps 3 through 5 under "Procedure 5.
Page 221 Assembly Replacement Procedure 15. EEROM (A2U501 or A2U500) described in "Procedure 5. A2, A3, A4, and A5 Assemblies." Secure the spectrum analyzer cover assembly. Chapter 3...
Page 222: Procedure 16. A21 Ocxo (Non-Option 103)
Assembly Replacement Procedure 16. A21 OCXO (Non-Option 103) Procedure 16. A21 OCXO (Non-Option 103) Removal 1. Remove the rear frame assembly as described in steps 1 through 22 under "Procedure 13. Rear Frame/Rear Dress Panel Removal," steps 1 through 22. 2.
Page 223: Replacement
Assembly Replacement Procedure 16. A21 OCXO (Non-Option 103) Figure 3-35 A21 OCXO Mounting Screws Replacement 1. Connect W49, coax 82, to the OCXO and position the OCXO and insulator in the spectrum analyzer. Dress W50 (orange cable) next to W49 through the opening in the deck. 2.
Page 224: Replaceable Parts
Replaceable Parts...
Page 225: Introduction
242. Parts List, Cover Assembly Table 4-7 on page 242. Parts List, Main Chassis (8560EC) Table 4-8 on page 243. Parts List, Main Chassis (8560E) Table 4-9 on page 245. Parts List, RF Section Table 4-10 on page 245. Parts List, Front Frame (8560EC) Table 4-11 on page 246.
Page 226: Ordering Information
To order a part that is not listed in the replaceable parts table, include the instrument model number, the description and function of the part, and the number of parts required. Address the order to the nearest HP Sales and Service ofﬁce.
Page 227: Parts List Format
Replaceable Parts Parts List Format Parts List Format The following information is listed for each part: 1. The Hewlett-Packard part number. 2. The total quantity (Qty) in the assembly. This quantity is given only once, at the ﬁrst appearance of the part in the list. 3.
Page 228: Firmware-Dependent Part Numbers
Replaceable Parts Firmware-Dependent Part Numbers Firmware-Dependent Part Numbers Refer to the following ﬁrmware note, part number 5961-6734: HP 8560 Series, HP 85620A, and HP 85629B Firmware Note Table 4-1 Reference Designations REFERENCE DESIGNATIONS Assembly Fuse Thermistor Attenuator, Filter Switch Isolator,...
Page 229 Replaceable Parts Firmware-Dependent Part Numbers Table 4-2 Abbreviations ABBREVIATIONS CONT Contact, Continuous, Across Flats, Capacitance, Control, Acrylic, Air (Dry Capacitor, Controller Method), Ampere Center Tapped, CONV Converter Adjust, Cermet, Cold, CPRSN Compression Adjustment ANSI American Compression CUP-PT Cup Point National Standards Carbon Clockwise,...
Page 230: Table 4-2 Abbreviations
Replaceable Parts Firmware-Dependent Part Numbers Table 4-2 Abbreviations FDTHRU Feedthrough Hexadecimal, DIP-SLDR Dip Solder Female Hexagon, Depletion FIL-HD Fillister Head Hexagonal D-MODE Mode Package Type FL Flash, Flat, HLCL Helical Fluid Designation Flat Point FLAT-PT Hewlett-Packard Deep, Depth, Front Company, Dia- High Pass metric Pitch,...
Page 231 Replaceable Parts Firmware-Dependent Part Numbers Table 4-2 Abbreviations Printed Circuit Link, Lock Nano, None Printed Circuit Leakage, N-CHA N-Channel Board Locking Luminous Nanohenry P-CHA P-Channel Nanometer, Pad, Power Nonmetallic Dissipation Male, Normally Picofarad, Maximum, Open,Number Power Factor Mega, Mil, Nominal Package Milli, Mode Milliampere...
Page 232 Replaceable Parts Firmware-Dependent Part Numbers Table 4-2 Abbreviations SPCG Spacing Range,Red, SPDT Single Pole Microcandela Resistance, SPST Single Pole, Microfarad Resistor Single Throw Right, Ring Square Microhenry Reference Stainless Steel Microliter, Resistance, Steel Underwriters Laboratories, Inc. Resistor Radio UNHDND Unhardened Frequency Rigid Round...
Page 233: Table 4-3 Reference Designations, Abbreviations, And Multipliers (4 Of 4)
µ −6 giga micro −9 mega nano −12 kilo pico −15 deka femto −1 −18 deci atto −2 centi Manufacturers Code List Refer to the Manufacturers Code List in the HP 8560 E-Series Spectrum Analyzer Component Level Information Chapter 4...
Page 234: Table 4-4 Replaceable Parts
Replaceable Parts Firmware-Dependent Part Numbers Table 4-4 Replaceable Parts Reference HP Part Qty Description Mfr Part Designator Number Code Number ACCESSORIES SUPPLIED 1810-0118 TERMINATION-COAXIAL SMA; 0.5W; 50Ω 16179 2003-6113-02 1250-0780 ADAPTER-COAX F-BNC M-N 24931 29JP104-2 HP 10502A 50Ω COAX CABLE WITH BNC MALE...
Page 235 28480 0960-0745 A1W1 8120-8153 CABLE ASSEMBLY PROBE POWER/LED 28480 8120-8153 A2 (8560EC) 08563-60160 1 CONTROLLER ASSEMBLY 28480 08563-60160 A2 (8560E) 08563-60032 1 CONTROLLER ASSEMBLY* 28480 08563-60032 08563-60021 1 INTERFACE ASSEMBLY 28480 08563-60021 08563-60033 1 INTERFACE ASSEMBLY (Option 007) 28480 08563-60033 08563-60050 1 LOG AMPLIFIER/CAL OSC.
Page 236 CABLE ASSEMBLY, TWO WIRE, TRACE ALIGN (8560E) (P/O A18MP1, A17J5 to A18L1) 08562-60042 1 HP-IB ASSEMBLY 28480 08562-60042 A19W1 5061-9031 CABLE ASSEMBLY, RIBBON, HP-IB 28480 5061-9031 (A2J5 to Rear Panel J2) 5062-7755 BATTERY ASSY (Includes W6) 28480 5062-7755 † 5063-0245 OCXO CABLE ASSEMBLY, 10.0 MHz...
Page 237 Replaceable Parts Firmware-Dependent Part Numbers Table 4-4 Replaceable Parts Reference HP Part Qty Description Mfr Part Designator Number Code Number † Not present in Option 103. 2110-0756 FUSE 5A 125V NTD UL 28480 2110-0756 (115 VAC Operation) 0955-0703 LOW PASS FILTER, 2.9 GHz...
Page 238 Replaceable Parts Firmware-Dependent Part Numbers Table 4-4 Replaceable Parts Reference HP Part Qty Description Mfr Part Designator Number Code Number 5022-0046 SYNTHZR (BOTTOM) 28480 5022-0046 5021-6739 SIGPATH (TOP) 28480 5021-6739 5021-6740 SIGPATH (BOTTOM) 28480 5021-6740 5002-0631 BRACE, RF BD 28480...
Page 239 Replaceable Parts Firmware-Dependent Part Numbers Table 4-4 Replaceable Parts Reference HP Part Qty Description Mfr Part Designator Number Code Number 0.5 V/GHz (A14J7 to Rear Panel J8) CABLE ASSEMBLIES (Cont.) 5062-0723 CABLE ASSEMBLY, COAX 83, OPT 001 28480 5062-0723 2ND IF OUT (A15J803 to Rear Panel J10)
Page 240 Replaceable Parts Firmware-Dependent Part Numbers Table 4-4 Replaceable Parts Reference HP Part Qty Description Mfr Part Designator Number Code Number *Not present in Option 327. CABLE ASSEMBLIES (Cont.) 08560-20001 1 CABLE ASSEMBLY, SEMI-RIGID, A10 LO IN 28480 08560-20001 (A10 to A7J3) (Option 002)
Page 241 Replaceable Parts Firmware-Dependent Part Numbers Table 4-4 Replaceable Parts Reference HP Part Qty Description Mfr Part Designator Number Code Number ‡ Not present in Option 103. 8120-5026 CABLE, COAX (A2J9to A17J7) 28480 8120-5026 8120-8482 CABLE, RIBBON (A17J6 to A17A1) 28480...
Page 242: Table 4-5 Assembly Mounting (See Figure 4-1)
Replaceable Parts Firmware-Dependent Part Numbers Figure 4-1 Parts Identiﬁcation, Assembly Mounting Table 4-5 Assembly Mounting (see Figure 4-1) Item HP Part Description Mfr Part Number Code Number 0515-1349 SCREW-MACH M3 X 30MM-LG PAN-HD TORX 28480 0515-1349 0515-2310 SCREW-MACH M3 X 60MM-LG PAN-HD TORX...
Page 243: Table 4-6 Parts List, Cover Assembly (See Figure 4-2) − 8560E And 8560Ec
Replaceable Parts Firmware-Dependent Part Numbers Parts List, Cover Assembly (See Figure 4-2) − 8560E and 8560EC Table 4-6 Item HP Part Description Mfr Part Number Code Number 5041-8911 BAIL HANDLE 28480 5041-8911 5041-8912 TRIM CAP 28480 5041-8912 0515-1114 SCREW MACH M4 X 10MM-LG PAN-HD...
Page 244: Table 4-8 . Parts List, Main Chassis (See Figure 4-3) − 8560E
INVERTER BOARD 28480 0950-60166 2090-0379 LCD ASSEMBLY- INCLUDES LCD GLASS, LCD 28480 2090-0379 MOUNT, AND A18DS1 and A18DS2 BACKLIGHT CABLES Parts List, Main Chassis (See Figure 4-3) − 8560E Table 4-8 Item HP Part Description Mfr Part Number Code Number...
Page 245 Replaceable Parts Firmware-Dependent Part Numbers Parts List, Main Chassis (See Figure 4-3) − 8560E Table 4-8 Item HP Part Description Mfr Part Number Code Number 0515-1227 SCREW MACH M3 X 6MM-LG FLH-HD TORX 28480 0515-1227 0515-1227 SCREW MACH M3 X 6MM-LG FLH-HD TORX...
Page 246: Table 4-9 Parts List, Rf Section − 8560E And 8560Ec (See Figure 4-4)
Replaceable Parts Firmware-Dependent Part Numbers Parts List, RF Section − 8560E and 8560EC (see Figure 4-4) Table 4-9 Item HP Part Description Mfr Part Number Code Number 0515-2332 SCREW-MACH M3 X 6MM-LG PAN-HD TORX 28480 0515-2332 0515-1032 SCREW-MACH M3 X 14MM-LG FLH-HD TORX...
Page 247 28480 2190-0067 2950-0072 NUT-HEX 1/4-32 THD 28480 2950-0072 0370-3079 KNOB RND .125 JG 28480 0370-3079 Parts List, Front Frame − 8560E (see Figure 4-5) Table 4-11 Item HP Part Description Mfr Part Number Code Number 0515-1622 SCREW-SKT-HD-CAP M4 X 0.7 8MM-LG...
Page 248: Table 4-11 Parts List, Front Frame − 8560E (See Figure 4-5)
Replaceable Parts Firmware-Dependent Part Numbers Parts List, Front Frame − 8560E (see Figure 4-5) Table 4-11 Item HP Part Description Mfr Part Number Code Number 0535-0082 NVTM W LKWR M4 28480 0535-0082 2190-0016 WASHER-LK INTL T 3/8 IN .377-IN-ID 28480...
Page 249: Table 4-13 Parts List, Rear Frame − 8560E (See Figure 4-7)
8121-0062 5061-9036 FAN ASSEMBLY (INCLUDES WIRE) 28480 5061-9036 1420-0341 BATTERY 3.0V 1.2A-HR LITHIUM POLYCARBON 08709 BR 2/3A SSP MONOFLOURIDE Parts List, Rear Frame − 8560E (see Figure 4-7) Table 4-13 Item HP Part Description Mfr Part Number Code Number 0515-1946...
Page 250 Replaceable Parts Firmware-Dependent Part Numbers Figure 4-2 Parts Identiﬁcation, Cover Assembly Replace with sj16c Chapter 4...
Page 251 Replaceable Parts Firmware-Dependent Part Numbers Chapter 4...
Page 252 Replaceable Parts Firmware-Dependent Part Numbers Figure 4-3 Parts Identiﬁcation, Main Chassis (8560E) Replace with sp11c Chapter 4...
Page 253 Replaceable Parts Firmware-Dependent Part Numbers Chapter 4...
Page 254 Replaceable Parts Firmware-Dependent Part Numbers Figure 4-4 Parts Identiﬁcation, RF Section Replace with sj128c Chapter 4...
Page 255 Replaceable Parts Firmware-Dependent Part Numbers Chapter 4...
Page 256: Figure 4-5 . Parts Identification, Front Frame (1 Of 2), 8560E
Replaceable Parts Firmware-Dependent Part Numbers Figure 4-5 Parts Identiﬁcation, Front Frame (1 of 2), 8560E Replace with sj163e Chapter 4...
Page 257 Replaceable Parts Firmware-Dependent Part Numbers Chapter 4...
Page 258: Figure 4-5 . Parts Identification, Front Frame (2 Of 2), Option 002
Replaceable Parts Firmware-Dependent Part Numbers Figure 4-5 Parts Identiﬁcation, Front Frame (2 of 2), Option 002 Replace with sj162e Chapter 4...
Page 259 Replaceable Parts Firmware-Dependent Part Numbers Chapter 4...
Page 260 Replaceable Parts Firmware-Dependent Part Numbers Figure 4-6 Parts Identiﬁcation, Rear Frame (8560E) Replace with sj11c Chapter 4...
Page 261 Replaceable Parts Firmware-Dependent Part Numbers Chapter 4...
Page 262: Figure 4-7 . Parts Identification, Chassis (8560Ec)
Replaceable Parts Firmware-Dependent Part Numbers Figure 4-7 Parts Identiﬁcation, Chassis (8560EC) Replace with sj120c Chapter 4...
Page 263 Replaceable Parts Firmware-Dependent Part Numbers Chapter 4...
Page 264 Replaceable Parts Firmware-Dependent Part Numbers Figure 4-8 Parts Identiﬁcation, Front Frame (8560EC) Replace with sj125c Chapter 4...
Page 265 Replaceable Parts Firmware-Dependent Part Numbers Chapter 4...
Page 266 Replaceable Parts Firmware-Dependent Part Numbers Figure 4-9 Parts Identiﬁcation, Rear Frame (8560EC) replace with sj119c Chapter 4...
Page 267 Replaceable Parts Firmware-Dependent Part Numbers Chapter 4...
Page 268 Major Assembly and Cable Locations...
Page 269: Introduction
Major Assembly and Cable Locations Introduction Introduction This chapter identiﬁes instrument cables and assemblies, and contains the following ﬁgures: Figure 5-1. Hinged Assemblies........... page 270 Figure 5-2. Top View (A2 and A3 Unfolded) EC-series ..page 271 Figure 5-3. Top View (A2, A3, A4, A5 Unfolded) EC-seriespage 272 Figure 5-4.
Page 270 Cables ..................Figure A1A1W1 Keyboard Cable ............5-4, 5-6 A3W1 Interface Cable ..............5-4 A19W1 HP-IB Cable ..............5-4, 5-6 W1 Power Cable ............5-4, 5-5, 5-6, 5-7 W2 Control Cable ............5-4, 5-5, 5-6, 5-7 W3 Line Switch Cable .............. 5-6, 5-9 W4 Option Module Cable ..............
Page 271: Figure 5-1 Hinged Assemblies
W57 Semirigid coax, FL2J2 to A13J1 ..........5-9 W58 ALT SWEEP OUT (coax 8) ............. 5-8 W59 FADC clock (coax 839) (8560E with Option 007) ....5-4 W60 ribbon, A2J8 to A17J1 ............5-2,5-3 W61 coax, A2J9 to A17 J7 ............5-2,5-3 W62 ribbon, A17J6 to A17A1 .............5-2,5-3...
Page 272: Figure 5-2 Top View (A2 And A3 Unfolded) − Ec-Series
Major Assembly and Cable Locations Introduction Top View (A2 and A3 Unfolded) − EC-Series Figure 5-2 Chapter 5...
Page 273: Figure 5-3 Top View (A2, A3, A4, And A5 Unfolded) − Ec-Series
Major Assembly and Cable Locations Introduction Top View (A2, A3, A4, and A5 Unfolded) − EC-Series Figure 5-3 Chapter 5...
Page 274: Figure 5-4 Top View (A2 Unfolded) − E-Series
Major Assembly and Cable Locations Introduction Top View (A2 Unfolded) − E-Series Figure 5-4 Chapter 5...
Page 275: Figure 5-5 Top View (A2 And A3 Unfolded) − E-Series
Major Assembly and Cable Locations Introduction Top View (A2 and A3 Unfolded) − E-Series Figure 5-5 Chapter 5...
Page 276: Figure 5-6 Top View (A2, A3, A4, And A5 Unfolded) − E-Series
Major Assembly and Cable Locations Introduction Top View (A2, A3, A4, and A5 Unfolded) − E-Series Figure 5-6 Chapter 5...
Page 277: Figure 5-7 Bottom View (A15 Unfolded)
Major Assembly and Cable Locations Introduction Figure 5-7 Bottom View (A15 Unfolded) Chapter 5...
Page 278: Figure 5-8 Bottom View (A15 And A14 Unfolded)
Major Assembly and Cable Locations Introduction Figure 5-8 Bottom View (A15 and A14 Unfolded) Chapter 5...
Page 279: Figure 5-9 Front End
Major Assembly and Cable Locations Introduction Figure 5-9 Front End Chapter 5...
Page 280: Figure 5-10 Rear View Ec-Series
Major Assembly and Cable Locations Introduction Figure 5-10 Rear View EC-Series Figure 5-11 Rear View E-Series Chapter 5...
Page 281 Major Assembly and Cable Locations Introduction Chapter 5...
Page 282 General Troubleshooting...
Page 283: Introduction
General Troubleshooting Introduction Introduction This chapter provides information needed to troubleshoot the instrument to one of the six major functional sections. Chapters 7 through 12 cover troubleshooting for each of these sections. Before troubleshooting, read the rest of this introduction. To begin troubleshooting, refer to "Troubleshooting to a Functional Section"...
Page 284: Ribbon Cables
Test Jack The test jack is a collection of test points located on a 16-pin jack. There are over 26 test jacks used throughout the spectrum analyzer. The HP 85629B Test and Adjustment Module uses the spectrum analyzer test jacks during diagnostic and adjustment procedures. The pins on the test jack may be manually probed, provided caution is used to prevent accidental shorting between adjacent pins.
Page 285: Figure 6-1 Assembly Test Points
General Troubleshooting Introduction Figure 6-1 Assembly Test Points Chapter 6...
Page 286: Figure 6-2 Ribbon Cable Connections (1 Of 3)
General Troubleshooting Introduction Figure 6-2 Ribbon Cable Connections (1 of 3) Chapter 6...
Page 287: Figure 6-3 Ribbon Cable Connections (2 Of 3)
General Troubleshooting Introduction Figure 6-3 Ribbon Cable Connections (2 of 3) Chapter 6...
Page 288: Figure 6-4 Ribbon Cable Connections (3 Of 3) - Ec-Series Only
General Troubleshooting Introduction Figure 6-4 Ribbon Cable Connections (3 of 3) - EC-Series Only Figure 6-4 shows A2J8 connections on 8560 EC-Series Instruments. Lines 2 −5 and 42 − 44 supply +5V to the two LCD backlights. Lines 1 and 41 supply +5V to the A17A1 Inverter board.
Page 289: Service Cal Data Softkey Menus
General Troubleshooting Introduction Service Cal Data Softkey Menus The jumper on jack A2J12 is shipped from the factory in the WR PROT (write protect) position (jumper on pins 2 and 3). When the jumper is set to the WR ENA (write enable) position (jumper on pins 1 and 2), an additional service cal data menu is displayed under Figure 6-5 on page 289...
Page 290: Figure 6-5 Service Cal Data Menu
General Troubleshooting Introduction Figure 6-5 Service Cal Data Menu Chapter 6...
Page 291: Troubleshooting To A Functional Section
20 OUTPUT 718;"ERR?;" 30 ENTER 718; Err$ 40 PRINT Err$ 50 END a. If there is no response over HP-IB, set an oscilloscope to the following settings: Sweep time ............ms/div Amplitude scale ........... 1 V/div b. The signals at A2J202 pin 3 and pin 14 should measure about 4 Vp-p.
Page 292: Table 6-1 Location Of Assembly Troubleshooting Text
Chapter 12. Display/Power Supply Section A17 CRT driver Chapter 12. Display/Power Supply Section A18 LCD Chapter 12. Display/Power Supply Section A18 CRT Chapter 12. Display/Power Supply Section A19 HP-IB Chapter 9. Controller Section FL1,2 Chapter 11. RF Section Chapter 6...
Page 293: Using The Tam
• Pressing will return you to the main menu of the TAM. MODULE • The TAM acts as the active controller on the HP-IB bus. No other active controller should be connected to the bus. Diagnostic Functions The TAM provides the three diagnostic functions listed below.
Page 294: Test Connectors
TAM when the display is not functioning. Test Connectors The TAM uses a built-in dc voltmeter and DAC to measure voltages on any one of the "test connectors" located throughout the HP 8560E/EC. HP 85629B test and adjustment modules with ﬁrmware revisions A or NOTE...
Page 295: Erroneous Results
TAM is malfunctioning and should be serviced. Blank Display (8560E only) It is possible to use TAM manual probe troubleshooting without a display, if an HP-IB printer is available. Refer to Chapter 12 for more information. Automatic Fault Isolation Automatic fault isolation (AFI) is designed to isolate most faults to one or two assemblies.
Page 296 General Troubleshooting Using the TAM ADC/Interface Check The keyboard interface and strobe-select circuitry must be functioning correctly, since these are required to operate the TAM. The TAM checks the ADC by attempting to measure three signals from three different locations. This ensures that an open or short in one cable will not hide the fact that the ADC is operating satisfactorily.
Page 297: Manual Probe Troubleshooting
These areas can sometimes be checked by looking at another TAM connector, but usually require manual troubleshooting techniques to isolate the problem further. If an HP-IB printer is connected, press Print to provide a hard copy of the currently displayed screen (the Page softkey labels will not be printed).
Page 298 General Troubleshooting Using the TAM Sweep-width settings: 20 kHz 10 kHz 4 kHz 2 kHz The cal oscillator troubleshooting mode sends the cal oscillator output (−35 dBm) to the A5 IF assembly. On the A5 IF assembly all crystal ﬁlter poles are shorted, all LC poles enabled, and the 15 dB attenuator disabled.
Page 299: Error Messages
General Troubleshooting Error Messages Error Messages The spectrum analyzer displays error messages in the lower right-hand corner of the display. A number, or error code, is associated with each error message. These error messages alert the user to errors in spectrum analyzer function or use.
Page 300: Viewing Multiple Messages
General Troubleshooting Error Messages Viewing Multiple Messages Although multiple errors may exist, the spectrum analyzer displays only one error message at a time. To view any additional messages, do the following: 1. Press RECALL MORE 1 OF 2 2. Press .
Page 301: (100 To 150)
System Analyzer Programming Errors (100 to 150) System Analyzer Programming Errors (100 to 150) Refer to the HP 8560 E-Series and EC-Series Spectrum Analyzers User's Guide for information on programming the spectrum analyzer. 100 NO PWRON Power-on state is invalid; default state is loaded. Press to clear error message.
Page 302: Adc Errors (200 To 299)
General Troubleshooting System Analyzer Programming Errors (100 to 150) 130 BAD TDF Arguments are only for TDF command. 131 ?? AM/FM AM/FM are not valid arguments for this command. 132 !FAV/RMP FAV/RAMP are not valid arguments for this command. 133 !INT/EXT INT/EXT are not valid arguments for this command. 134 ??? ZERO ZERO is not a valid argument for this command.
Page 303: Lo And Rf Hardware/Firmware Failures (300 To 399)
MHz reference, the A21 OCXO, or on the A15 assembly (Option 103). These errors do not apply to the hardware in an HP 8560 E-series or EC-series spectrum analyzer. If they occur in an HP 8560 E-series or EC-series spectrum analyzer, suspect a problem with the model Chapter 6...
Page 304 DAC cannot bring MAINSENSE close enough to 0 volts for the ﬁne adjust DAC to bring MAINSENSE to exactly 0 volts. This error is not applicable to HP 8560 E-series or EC-series spectrum analyzers. If it occurs in Chapter 6...
Page 305 MAINSENSE to 0 volts. This error is not applicable to HP 8560 E-series or EC-series spectrum analyzers. If it occurs in an HP 8560 E-series or EC-series spectrum analyzer, suspect a problem with the model number identiﬁcation in the spectrum analyzer ﬁrmware.
Page 306 PLL is programmed for 204 MHz. ERR 309 is set if XFRSENSE is greater than +5 V (it should be at the negative rail). This error is not applicable to HP 8560 E-series or EC-series spectrum analyzers. If it...
Page 307 0. This is an indication of an unlocked main roller loop or lack of a sweep ramp. This error is not applicable to HP 8560 E-series or EC-series spectrum analyzers. If it occurs in an HP 8560 E-series or EC-series spectrum analyzer, suspect a problem with the model number identiﬁcation in the spectrum...
Page 308 (Option 103). These errors do not apply to the hardware in an HP 8560 E-series or EC-series spectrum analyzer. If they occur in an HP 8560 E-series or EC-series spectrum analyzer, suspect a problem with the model number identiﬁcation in the spectrum analyzer ﬁrmware.
Page 309 DAC cannot bring MAINSENSE close enough to 0 volts for the ﬁne adjust DACs to bring MAINSENSE to exactly 0 volts. This error is not applicable to HP 8560 E-series or EC-series spectrum analyzers. If it occurs in an HP 8560 E-series or EC-seriesHP 8560 E-series or EC-series spectrum analyzer, suspect a problem with the model number identiﬁcation in the...
Page 310 329 is set if the difference between these voltages is 0 or negative. This is typically because the main roller loop is unlocked. This error is not applicable to HP 8560 E-series or EC-series spectrum analyzers. If it occurs in...
Page 311 YTO Loop Settling Errors (351 to 354) These errors are generated when the YTO loop error voltage will not stabilize at an acceptable value during the YTO loop locking routines. These errors only apply to the hardware in an HP 8560 E-series or EC-series Chapter 6...
Page 312 Sampling Oscillator (355) This error indicates an unlocked sampling oscillator during the local oscillator (LO) alignment routine. This error only applies to the hardware in an HP 8560 E-series or EC-series spectrum analyzer. 355 SMP CAL Sampler unlock condition during calibration routine.
Page 313: Automatic If Errors (400 To 599)
General Troubleshooting System Analyzer Programming Errors (100 to 150) 359 SPAC CAL Cannot ﬁnd "x" intersection for "bucket 2" of the span accuracy calibration sweep. This error indicates a possible failure of the sweep generator, span attenuator, or main/FM coil sweep switches on the A14 frequency control assembly.
Page 314 General Troubleshooting System Analyzer Programming Errors (100 to 150) Errors 405 to 416: When these 10K resolution bandwidth (RBW) error messages appear, use the following steps to check for errors 581 or 582. 1. Press to turn the spectrum analyzer off. LINE 2.
Page 315 General Troubleshooting System Analyzer Programming Errors (100 to 150) 410 RBW 10K Unable to adjust 10 kHz resolution bandwidth in second crystal pole. 411 RBW 10K Unable to adjust 10 kHz resolution bandwidth in third crystal pole. 412 RBW 10K Unable to adjust 10 kHz resolution bandwidth in fourth crystal pole.
Page 316 General Troubleshooting System Analyzer Programming Errors (100 to 150) 300Hz. ADC handshake. 430 RBW 300 Unable to adjust 300 Hz resolution bandwidth. ADC handshake. Unable to adjust 1 kHz resolution bandwidth. ADC 431 RBW 1K handshake. Unable to adjust 3 kHz resolution bandwidth. ADC 432 RBW 3K handshake.
Page 317 General Troubleshooting System Analyzer Programming Errors (100 to 150) 449 RBW 10K 10 kHz resolution bandwidth amplitude low in fourth crystal pole. 450 IF SYSTM IF hardware failure. Check other error messages. 451 IF SYSTM IF hardware failure. Check other error messages. 452 IF SYSTM IF hardware failure.
Page 318 General Troubleshooting System Analyzer Programming Errors (100 to 150) second LC pole. 476 RBW 100K Unable to adjust 100 kHz resolution bandwidth in second LC pole. 477 RBW 300K Unable to adjust 300 kHz resolution bandwidth in second LC pole. Unable to adjust 1 MHz resolution bandwidth in second 478 RBW 1M LC pole.
Page 319 General Troubleshooting System Analyzer Programming Errors (100 to 150) oscillator. 3. If a 10 MHz signal (approximately 0 dBm) is not present, suspect the A15 RF assembly, the A21 OCXO, or the A15 assembly TCXO (Option 103). If the 10 MHz reference is present, continue with step 4.
Page 320 General Troubleshooting System Analyzer Programming Errors (100 to 150) bandwidth. Insufﬁcient gain during LC bandwidth calibration. 509 AMPL .1M Unable to adjust amplitude of 100 kHz resolution bandwidth. Insufﬁcient gain during LC bandwidth calibration. 510 AMPL .3M Unable to adjust amplitude of 300 kHz resolution bandwidth.
Page 321 General Troubleshooting System Analyzer Programming Errors (100 to 150) 526 RBW <300 ADC timeout during IF ADJUST of <300 Hz resolution bandwidth. 527 RBW <300 Step gain correction failed for <300 Hz resolution bandwidth. Check narrow BW SGO attenuator. 528 RBW <300 Calibration of dc level at ADC failed for <300 Hz resolution bandwidth.
Page 322 General Troubleshooting System Analyzer Programming Errors (100 to 150) 551 LOG AMPL LOG Board ID. Indicates incompatible hardware. Cal oscillator on A4 assembly not expected. 552 LOG AMPL Unable to adjust amplitude of log scale. 553 LOG AMPL Unable to adjust amplitude of log scale. 554 LOG AMPL Unable to adjust amplitude of log scale.
Page 323 General Troubleshooting System Analyzer Programming Errors (100 to 150) offset circuitry. 576 LOG AMPL Unable to adjust amplitude of log scale. Check video offset circuitry. 577 LOG AMPL Unable to adjust amplitude of log scale. Check video offset circuitry. 578 LOG AMPL Limiter calibration error from DC logger calibration. 579 LOG AMPL Attenuator CAL level error from DC logger calibration.
Page 324 General Troubleshooting System Analyzer Programming Errors (100 to 150) resolution bandwidth. A properly operating sweep generator generates a series of negative-going parabolas. These parabolas generate the sweeps used to adjust resolution bandwidths of 10 kHz and less. Check the sweep generator with the following steps.
Page 325: System Errors (600 To 651)
Although some of these errors might result in a blanked display, it is possible to read these errors over HP-IB. Refer to "Troubleshooting to a Functional Section" in this chapter. The EEROM on A2 is used to store data for frequency response correction, elapsed time, focus, and intensity levels.
Page 326 ROM, an error code is generated. If a defective programmed ROM is found, replace it with another ROM with the same HP part number. Refer to Chapter 4, "Replaceable Parts." Although some of these errors might result in a blanked display, it is possible to read these errors over HP-IB.
Page 327: Battery Problem (718)
General Troubleshooting System Analyzer Programming Errors (100 to 150) 713 RAM U301 Checksum error of system RAM A2U301. 714 RAM U300 Checksum error of system RAM A2U300. 715 RAM U305 Checksum error of system RAM A2U305. 716 RAM U304 Checksum error of system RAM A2U304. Microprocessor Error (717) Microprocessor not fully operational.
Page 328: Fast Adc Error (760)
Option Module Errors (800 to 899) These error codes are reserved for option modules, such as the HP 85629 test and adjustment module and the HP 85620A mass memory module. Refer to the option module manual for a listing of error messages.
Page 329 General Troubleshooting System Analyzer Programming Errors (100 to 150) 907 DO IF CAL Unit is still performing IF calibrations, or is in need of IF calibrations which were not yet done due to an OVENCOLD condition, since an OVENCOLD error is indicative of a bandwidth ≤1 kHz not getting calibrated.
Page 330: Block Diagram Description
General Troubleshooting Block Diagram Description Block Diagram Description The spectrum analyzer is comprised of the six main sections listed below. See Figure 6-6 on page 330. The following descriptions apply to the Simpliﬁed Block Diagram and Overall Block Diagram located at the end of this chapter.
Page 331: Figure 6-6 Functional Sections
General Troubleshooting Block Diagram Description Figure 6-6 Functional Sections Chapter 6...
Page 332: Rf Section
RF section microcircuits are controlled by signals from the A14 frequency control and A15 RF assemblies. The HP 8560E/EC spectrum analyzer uses triple conversion to produce the 10.7 MHz IF and a fourth conversion used only in resolution bandwidths ≤100 Hz. A8 low band mixer up-converts the RF input to a ﬁrst IF of 3.9107 GHz.
Page 333 General Troubleshooting Block Diagram Description A9 Input Attenuator The attenuator is a 50 Ω precision, coaxial step attenuator. Attenuation in 10 dB steps from 0 dB to 70 dB is accomplished by switching the signal path through one or more of the three resistive pads. The attenuator automatically sets to 70 dB and DC block when the spectrum analyzer turns off, providing ESD protection.
Page 334: Synthesizer Section
General Troubleshooting Block Diagram Description Control for the ampliﬁers originates from two DACs on the A3 interface assembly. (DAC values are interpolated approximately every 17 MHz based on data obtained during the frequency response adjustment.) A15 ﬂatness-compensation control circuitry converts the RF GAIN voltage, from A3, into two currents: RF GAIN1 and RF GAIN2.
Page 335 General Troubleshooting Block Diagram Description crystal oscillator) or an Option 103 TCXO (temperature-compensated crystal oscillator). The PLL can also be locked to an external frequency reference. The 10 MHz reference also supplies the reference for the frequency counter on the A2 controller assembly, and the cal oscillator on the A4 log ampliﬁer assembly.
Page 336: If Section
General Troubleshooting Block Diagram Description Figure 6-7 Phase Lock Loops Fractional N PLL (part of A14) The fractional N PLL produces an output of 60 MHz to 96 MHz. This PLL output serves as the reference frequency for the YTO PLL. A one-to-one relationship in frequency tracking exists between the fractional N PLL and the YTO.
Page 337 General Troubleshooting Block Diagram Description The HP 8560E/EC uses trace-data manipulation to generate the 5 dB/DIV scale from the 10 dB/DIV scale. The A3 interface assembly ampliﬁes and offsets the 10 dB/DIV video to generate the 2 dB/DIV scale. The 1 dB/DIV scale is generated from the 2 dB/DIV scale through trace data manipulation.
Page 338: Adc/Interface Section
A2 controller board, on 8560EC instruments, and is available as an option, located on the A16 board (Option 007) on 8560E instruments. The main ADC is used for digitizing video signals when the sweep time is ≥30 ms and various other signals, such as PLL error voltages.
Page 339 Triggering The HP 8560E/EC has ﬁve trigger modes: free run, single, external, video, and line. The free run and single trigger signal comes from the 1 MHz ADC clock. The line trigger signal comes from the A6 power supply.
Page 340: Controller Section
ASM, Fast ADC circuitry, HP-IB interface, control, frequency counter, display RAM, option module interface, and EEROM. In 8560E instruments the A2 contains the CPU, RAM, ROM, the display ASM and line generators, CRT blanking, focus, intensity, HP-IB interface, control, frequency counter, display RAM, option module interface, and EEROM.
Page 341: Display/Power Supply Section
General Troubleshooting Block Diagram Description Display/Power Supply Section A6 Power Supply The A6 power supply is a switching supply operating at 40 kHz for low voltages in both EC-series and E-series instruments. In E-series instruments, the power supply also provides the 30 kHz signal for the CRT supplies (cathode, ﬁlament, +110 Vdc, and post accelerator).
Page 342: Figure 6-8 . Simplified Block Diagram
General Troubleshooting Block Diagram Description Figure 6-8 Simpliﬁed Block Diagram Replace with sj13c Chapter 6...
Page 343 General Troubleshooting Block Diagram Description Chapter 6...
Page 344: Figure 6-9 Overall Block Diagram (1 Of 5)
General Troubleshooting Block Diagram Description Figure 6-9 Overall Block Diagram (1 of 5) Replace with sj131c Chapter 6...
Page 345 General Troubleshooting Block Diagram Description Chapter 6...
Page 346: Figure 6-9 Overall Block Diagram (2 Of 5)
General Troubleshooting Block Diagram Description Figure 6-9 Overall Block Diagram (2 of 5) Replace with sj132c Chapter 6...
Page 347 General Troubleshooting Block Diagram Description Chapter 6...
Page 348: Figure 6-9 Overall Block Diagram (3 Of 5)
General Troubleshooting Block Diagram Description Figure 6-9 Overall Block Diagram (3 of 5) Replace with sj135c Chapter 6...
Page 349 General Troubleshooting Block Diagram Description Chapter 6...
Page 350: Figure 6-9 Overall Block Diagram (4 Of 5)
General Troubleshooting Block Diagram Description Figure 6-9 Overall Block Diagram (4 of 5) Replace with sj133c Chapter 6...
Page 351 General Troubleshooting Block Diagram Description Chapter 6...
Page 352: Figure 6-9 Overall Block Diagram (5 Of 5)
General Troubleshooting Block Diagram Description Figure 6-9 Overall Block Diagram (5 of 5) Replace with sj134c Chapter 6...
Page 353 General Troubleshooting Block Diagram Description Chapter 6...
Page 354: Adc/Interface Section
ADC/Interface Section...
Page 355: Introduction
Peak/Pit Detection............. page 391 32 K-Byte Static RAM............page 392 page 393 A16 Assembly Fast ADC Control Circuits (Option 007 in the 8560E CPU Interface and Control Registers ......page 393 Reference Clock ..............page 397 Clock and Sample Rate Generator ........
Page 356: Table 7-1 W2 Control Cable Connections
ADC/Interface Section Introduction Trigger ................. page 398 16-Bit Post-Trigger Counter ........page 398 15-Bit (32 K) Circular Address Counter ....page 399 Video Trigger Comparator .......... page 399 Table 7-1 W2 Control Cable Connections Signal A3J2 (pins) A4J2 (pins) A5J2 (pins) A14J2 A15J2 (pins) (pins)
Page 357 ADC/Interface Section Introduction Table 7-1 W2 Control Cable Connections Signal A3J2 (pins) A4J2 (pins) A5J2 (pins) A14J2 A15J2 (pins) (pins) A GND RF GAIN — — — LO3 ERR — — — A GND LVFC_ — — — ENABLE FC ERR —...
Page 358: Troubleshooting Using The Tam
ADC/Interface Section Troubleshooting Using the TAM Troubleshooting Using the TAM When using Automatic Fault Isolation, the TAM indicates suspected circuits that need to be manually checked. Use Table 7-2 on page 358 locate the manual procedure. Table 7-3 on page 359 lists assembly test connectors associated with each Manual Probe Troubleshooting test.
Page 359: Table 7-2 Automatic Fault Isolation References
ADC/Interface Section Troubleshooting Using the TAM Table 7-2 Automatic Fault Isolation References Suspected Circuit Manual Procedure to Perform Indicated by Automatic Fault Isolation Check ADC ASM ADC ASM Check ADC MUX ADC MUX Check ADC Start/Stop ADC Start/Stop Control Control Check Analog Bus Drivers Automatic Fault Isolation (in this chapter) Analog Bus Drivers...
Page 360: Table 7-3 Tam Tests Versus A3 Test Connectors
ADC/Interface Section Troubleshooting Using the TAM Table 7-3 TAM Tests versus A3 Test Connectors Connector Manual Probe Troubleshooting Measured Signal Test Lines A3J105 Video Input to Interface Video to Rear Panel MS1, MS2 Video MUX MS1, MS3 LOG Offset/LOG Expand MS1, MS3 Video Filter Buffer Amp.
Page 361: Keyboard/Rpg Problems
Keyboard Interface Refer to function block G of A3 Interface Assembly Schematic Diagram (sheet 3 of 6) in the HP 8560 E-Series Spectrum Analyzer Component Level Information A pressed key results in a low on a keyboard sense line (LKSNS0 through LKSNS7).
Page 362: Rpg Interface
RPG Interface Refer to function block J of A3 Interface Assembly Schematic Diagram (sheet 3 of 6) in the HP 8560 E-Series Spectrum Analyzer Component Level Informatio U608B latches the RPG direction from the two RPG outputs, RPG_COUNT and RPG_COUNT1. Counterclockwise RPG rotation produces low-going pulses which result in a high output on U608B.
Page 363: Table 7-5 Counter Frequencies
ADC/Interface Section Keyboard/RPG Problems RPG_COUNT1 input of the RPG Interface. 6. Press to turn spectrum analyzer on. LINE 7. Check A3U608 pin 9 for narrow, low-going pulses approximately every 90 ms. 8. Check A3U608 pin 13 (LRPG_RESET) for narrow, low-going pulses approximately every 90 ms.
Page 364: Triggering Or Video Gating Problems
Triggering or Video Gating Problems Refer to function block H of A3 Interface Assembly Schematic Diagram (sheet 3 of 6) in the HP 8560 E-Series Spectrum Analyzer Component Level Information The 1 MHz ADC clock provides synchronization in FREE RUN and SINGLE triggering.
Page 365 LEN [ ] d. Connect a pulse/function generator (such as an HP 8116A) to provide a 5 V peak-to-peak square wave (TTL level) to the HP 8560E/EC rear panel EXT/GATE TRIG INPUT and also (using a BNC tee) to the channel 4 input of the oscilloscope (HP 54501A).
Page 366 ADC/Interface Section Triggering or Video Gating Problems e. Set the pulse/function generator to NORMAL mode with a duty cycle of 50% and a frequency of 10 Hz. f. Press the following keys on the oscilloscope: CLEAR DISPLAY ........highlight off frame axes grid grid .........
Page 367: Preselector Peaking Control (Real Time Dac)
Diagram (sheet 4 of 6) in the HP 8560 E-Series Spectrum Analyzer Component Level Information The HP 8560E/EC uses a real-time DAC (R/T DAC1) to peak the preselector. 1. Press on the HP 8560E/EC and set the span to 0 Hz.
Page 368: Flatness Control (Rf Gain Dacs)
Flatness Control (RF Gain DACs) Refer to function block M of A3 Interface Assembly Schematic Diagram (sheet 4 of 6) in the HP 8560 E-Series Spectrum Analyzer Component Level Information RF Gain DACs control the A15 assembly ﬂatness compensation ampliﬁers. The RF Gain DACs are arranged so that the output of one DAC is the voltage reference for the other DAC.
Page 369 ADC/Interface Section Flatness Control (RF Gain DACs) 8. Place the WR PROT/ WR ENA jumper on the A2 controller assembly in the WR PROT position. Press PRESET Chapter 7...
Page 370: A3 Assembly Video Circuits
9. If the video ﬁlters appear faulty, see "Video Filter" in this chapter. 10.If there appears to be a peak detector problem, refer to "Positive/Negative Peak Detectors" in this chapter. 11.Connect CAL OUTPUT to INPUT 50 Ω of the HP 8560E/EC, and set the controls as follows: Center frequency ..........300 MHz Span ................
Page 371 14.To conﬁrm proper video input to the video circuit, set the HP 8560E/EC to Log 10 dB per division and change the reference level in 10 dB steps from −10 dBm to +30 dBm. At each 10 dB step, the input voltage should change 100 mV.
Page 372: Log Offset/Log Expand
Amplitude ............1 V pk-to-pk DC Offset .............. +500 mV Frequency ..............50 Hz 4. Set the HP 8560E/EC sweep time to 50 ms. 5. Adjust the function generator amplitude and offset until the sine wave ﬁlls the entire graticule area.
Page 373: Video Mux
Diode A3CR109 clamps the voltage at A3TP14 to −0.4 V when in log expand, with less than 0.8 V at J101. To conﬁrm this failure, lift the cathode of diode A3CR109 and repeat steps 1 through 7. 10.To return the HP 8560E/EC to automatic sweep, press SWEEP or press...
Page 374 HP 8560 E-Series Spectrum Analyzer Component Level Information The HP 8560E/EC uses digital ﬁltering for 1 Hz to 100 Hz video bandwidths. An RC low-pass ﬁlter is used for 300 Hz to 3 MHz video bandwidths. Various series resistances and shunt capacitances switch into the video ﬁlter to change its cutoff frequency.
Page 375: Video Filter Buffer Amplifier
Video Filter Buffer Ampliﬁer Refer to function block W of A3 Interface Assembly Schematic Diagram (sheet 5 of 6) in the HP 8560 E-Series Spectrum Analyzer Component Level Information The video ﬁlter buffer ampliﬁer provides outputs for video trigger, positive and negative peak detectors, and the analog zero-span (sweeps <30 ms).
Page 376 Video bandwidth ............AUTO Log dB/division ............. 10 dB/div 2. If the HP 8560E/EC does not meet the conditions in steps a through e below, the positive and negative peak detectors are probably faulty. Continue with step 3 to check the detectors.
Page 377: Peak Detector Reset
Diagram (sheet 4 of 6) in the HP 8560 E-Series Spectrum Analyzer Component Level Information. 1. Press on the HP 8560E/EC and set the controls as follows: PRESET Center frequency ............300 MHz Span ..................0 Hz Sweep time ................5 s Detector mode ............
Page 378: Rosenfell Detector
The HROSENFELL signal is valid only when the NORMAL (rosenfell) detector mode is selected. 1. Remove anything connected to the HP 8560E/EC front panel INPUT 50 Ω connector. Press on the HP 8560E/EC and set the...
Page 379: Adc Mux
ADC. The YTO ERR, FCMUX, CAL OSC TUNE, and OFL ERR inputs are used only during diagnostic and auto adjust routines and during retrace. 1. Set the HP 8560E/EC to the following settings: Center frequency ............. 300 MHz Span ................. 0 Hz Reference level ............
Page 380: Table 7-9 Logic Levels At A3U108
Mode SAMPLE POS PEAK NEG PEAK 5. Set the HP 8560E/EC to the following settings: Span ................5 MHz Sweep time ..............50 ms 6. Check for the presence of the SCAN RAMP signal by connecting an oscilloscope probe to A3J2 pin 45 (component side of A3J2). Connect the negative-probe lead to A3TP4.
Page 381: Variable Gain Amplifier (Vga)
Diagram (sheet 6 of 6) in the HP 8560 E-Series Spectrum Analyzer Component Level Information 1. Press on the HP 8560E/EC and set the controls as follows: PRESET Center frequency ............. 300 MHz Span ................. 0 Hz Detector mode ............. Sample Reference level ............
Page 382: A3 Assembly Adc Circuits
1. Disconnect W22 from A2J8. 2. If a 10 MHz TTL signal is absent on W22, refer to the 10 MHz Reference (on the A15 RF assembly) troubleshooting procedure in Chapter 11. 3. Set the HP 8560E/EC to zero. SPAN 4. Reconnect W22.
Page 383: Adc Start/Stop Control
Start/Stop Control circuitry is being selected properly by the processor and U508 in the ADC Register block is working properly. 8. Press on the HP 8560E/EC and set the controls as follows: PRESET Span ..................0 Hz Detector mode ............. SAMPLE Sweep time ..............
Page 384: Adc Asm
(Sheet 2 of 6) in the HP 8560 E-Series Spectrum Analyzer Component Level Information 1. Press on the HP 8560E/EC and set the controls as follows: PRESET Span ................0 Hz Sweep time ..............60 s Detector mode ............SAMPLE 2.
Page 385: Ramp Counter
There are 601 buckets per sweep, so the ramp (bucket) counter counts from 0 to 600. The ramp counter is incremented by HRST_PK_ENA. 1. Press on the HP 8560E/EC and set the controls as follows: PRESET Span ................5 MHz Detector mode ............SAMPLE 2.
Page 386: A3 Assembly Control Circuits
(sheet 4 of 6) in the HP 8560 E-Series Spectrum Analyzer Component Level Information 1. Press on the HP 8560E/EC, and set the controls as follows: PRESET Span ................0 Hz Trigger ............... Single 2. Monitor A3U401 pin 3 (LRF_STB) with an oscilloscope or logic probe.
Page 387: Analog Bus Timing
2 µs delay between the time HANA_BUS goes high and the enable line to demultiplexer A3U407 goes low. 1. Press on the HP 8560E/EC and set the controls as follows: PRESET Center frequency ............. 300 MHz Span ................. 100 MHz 2.
Page 388: Table 7-10 Demultiplexer A3U410 Truth Table
Interface Strobe Select Refer to function block K of A3 Interface Assembly Schematic Diagram (sheet 3 of 6) in the HP 8560 E-Series Spectrum Analyzer Component Level Information Interface strobe select generates the various strobes used by circuits on the A3 Interface Assembly.
Page 389: Table 7-11 Demultiplexer A3U500 Truth Table
ADC/Interface Section A3 Assembly Control Circuits Table 7-11 Demultiplexer A3U500 Truth Table Selected Output Line Pin 15, LSENSE_KBD Pin 14, LINT_PRIOR Pin 13, LADC_DATA1 Pin 12, LDAC_DATA0 Pin 11, HCNTR_LD0 Pin 10, HCNTR_LD1 Pin 9, LRPG_RD Pin 7, LADC_REG0 Chapter 7...
Page 390: A16 Assembly Fast Adc Circuits (Option 007 In The 8560E)
Sweep time ..............20 ms 2. Connect the CAL OUTPUT to the INPUT 50 Ω connector. 3. Adjust the HP 8560E Option 007 reference level to place the signal at the top graticule line on the CRT display. 4. Measure the dc level at TP25. If the voltage measured is not +1.0 ±0.15 V, troubleshoot the A3 interface assembly.
Page 391: 8-Bit Flash Adc
ADC/Interface Section A16 Assembly Fast ADC Circuits (8560E with Option 007) 7. Adjust the HP 8560E Option 007 reference level to place the signal at the top graticule line on the CRT display. 8. Measure the dc level at TP25 and TP26. The level should be +1.0 ±0.25 V.
Page 392: Peak/Pit Detection
ADC/Interface Section A16 Assembly Fast ADC Circuits (8560E with Option 007) 5. Pins 4 through 10 (ADC7-ADC1) and pin 21 (ADC0) of U35 should all be low (logic 0), corresponding to an ADC digital count of zero for the analog input of 0 volts or less.
Page 393: Table 7-12 Lp/Q Truth Table
ADC/Interface Section A16 Assembly Fast ADC Circuits (8560E with Option 007) Table 7-12 LP/Q Truth Table Mode LP/Q 12M_SEL SCLK-1 LSAMPLE LPEAK P_LO P_HI 12MHz SAMPLE PEAK PEAK (Pit) Clocking Peak/Pit Sample 32 K-Byte Static RAM Refer to function block K of the A16 fast ADC assembly schematic diagram in the HP 8560 E-Series Component Level Information.
Page 394: A16 Assembly Fast Adc Control Circuits
ADC/Interface Section A16 Assembly Fast ADC Control Circuits (8560E with Option 007) A16 Assembly Fast ADC Control Circuits (8560E with Option 007) The fast ADC control circuits consist of the CPU interface and control registers, the reference clock, a clock and sample rate generator, a...
Page 395: Table 7-13 Control Word At Primary Address (U3 And U4)
ADC/Interface Section A16 Assembly Fast ADC Control Circuits (8560E with Option 007) Table 7-13 Control Word at Primary Address (U3 and U4) Mnemonic State Description Bit 0 WRITE Allows samples to be written to FADC memory. All on-board clocks running and samples being written to FADC memory.
Page 396 ADC/Interface Section A16 Assembly Fast ADC Control Circuits (8560E with Option 007) Table 7-13 Control Word at Primary Address (U3 and U4) Mnemonic State Description Bit 5 LADCEN Enables FADC memory for "writes". (Toggled in conjunction with bit 0.) Disables FADC memory for "writes".
Page 397 ADC/Interface Section A16 Assembly Fast ADC Control Circuits (8560E with Option 007) Table 7-13 Control Word at Primary Address (U3 and U4) Mnemonic State Description LREADMEM Enables read FADC memory. Read FADC memory disabled. Read FADC memory enabled. LREADADDR Enables read trigger address latch.
Page 398: Reference Clock
ADC/Interface Section A16 Assembly Fast ADC Control Circuits (8560E with Option 007) Table 7-13 Control Word at Primary Address (U3 and U4) Mnemonic State Description LPEAK Peak/pit detection mode control. Enables pit (negative-peak) detection mode if LSAMPLE (Bit 4) is also high.
Page 399 ADC/Interface Section A16 Assembly Fast ADC Control Circuits (8560E with Option 007) Trigger Refer to function block D of the A16 fast ADC assembly schematic diagram in the HP 8560 E-Series Component Level Information. When the A16 fast ADC is triggered, the current static RAM address is latched into trigger address latches U27 and U28 (block G), and the post-trigger counter (U19, U20, U21, U22, and U47) begins counting.
Page 400 ADC/Interface Section A16 Assembly Fast ADC Control Circuits (8560E with Option 007) The post-trigger counter begins counting upward in "write" mode on the ﬁrst rising edge of PCLK after the LCOUNT signal from the trigger circuit goes low. The frequency of PCLK is the programmed sample rate.
Page 401 ADC/Interface Section A16 Assembly Fast ADC Control Circuits (8560E with Option 007) video trigger level. The video trigger level value on IOB2 through IOB7 is latched into the P input (top portion of U34) by the ﬁrmware on the A2 controller assembly when the fast ADC is in "read" mode. When the sample on the Q input is higher than the video trigger level on the P input, V_HI output is high, and V_LO output is low.
Page 402: Figure 7-2 A3 Interface Assembly Block Diagram
ADC/Interface Section A16 Assembly Fast ADC Control Circuits (8560E with Option 007) Figure 7-2 A3 Interface Assembly Block Diagram Replace with sj18c Chapter 7...
Page 403 ADC/Interface Section A16 Assembly Fast ADC Control Circuits (8560E with Option 007) Chapter 7...
Page 404: Figure 7-3 Fast Adc Block Diagram (Option 007 In E-Series Instruments)
ADC/Interface Section A16 Assembly Fast ADC Control Circuits (8560E with Option 007) Figure 7-3 Fast ADC Block Diagram (Option 007 in E-series instruments) Replace with sj139e Chapter 7...
Page 405 ADC/Interface Section A16 Assembly Fast ADC Control Circuits (8560E with Option 007) Chapter 7...
Page 406 IF Section...
Page 407 IF Section Introduction Introduction The IF Section contains the A4 Log Ampliﬁer/Cal Oscillator and A5 IF assemblies. Troubleshooting Using the TAM ........page 408 Troubleshooting the Log Ampliﬁer with the TAM ..page 409 Troubleshooting A5 with the TAM........page 409 Troubleshooting the Cal Oscillator with the TAM ..
Page 408 IF Section Introduction Low-Pass Filter ..............page 459 Sweep Generator ............... page 460 AM/FM Demodulation, Audio Ampliﬁer, and Speaker ... page 460 Because the cal oscillator circuitry on the A4 assembly is such an NOTE integral part of the IF adjustment, always check this assembly ﬁrst, before checking the rest of the IF Section.
Page 409: Figure 8-1 A4 And A5 Test Connectors
IF Section Troubleshooting Using the TAM Troubleshooting Using the TAM When using Automatic Fault Isolation, the TAM indicates suspected circuits that need to be manually checked. Use Table 8-1 on page 408 locate the manual procedure. Table 8-2 on page 410 lists assembly test connectors associated with each Manual Probe Troubleshooting test.
Page 410: Troubleshooting The Log Amplifier With The Tam
IF Section Troubleshooting Using the TAM Troubleshooting the Log Ampliﬁer with the TAM Manual probe troubleshooting tests several dc bias points and signal path voltages. A dc bias is measured in the limiter and a fault here indicates a broken limiter stage. Signal path voltages are measured at the input, after the video ampliﬁer in the linear path, after the offset and gain compensation circuits in the log path, and after the video offset.
Page 411: Table 8-2 Tam Tests Versus Test Connectors
IF Section Troubleshooting Using the TAM Table 8-2 TAM Tests versus Test Connectors Connector Manual Probe Troubleshooting Measured Signal Lines Test A3J105 Video Input to Interface Video to Rear Panel Video MUX Log Offset/Log Expand MS1,MS3 Video Filter Buffer Ampliﬁer MS3, MS5, OS1 Video Peak Detectors MS5, MS6...
Page 412 IF Section Troubleshooting Using the TAM Table 8-2 TAM Tests versus Test Connectors Connector Manual Probe Troubleshooting Measured Signal Lines Test A5J8 Revision 4th XTAL Pole Stage MS1, MS2, MS3 Post Ampliﬁer Stage 1 MS2, MS3, MS4 Post Ampliﬁer Stage 3 MS3, MS4, MS5 3rd LC Pole Stage MS5, MS6, MS7...
Page 413: Figure 8-2 If Section Troubleshooting With The Tam
1. On the HP 8560E/EC, press , and . Select PRESET MODULE Diagnose Cal Osc Troubleshooting Mode 2. On the HP 8560E/EC, disconnect W27 (coax 3) from A5J5 and monitor the output of A5J5 with a second spectrum analyzer. Chapter 8...
Page 414: Troubleshooting The Cal Oscillator With The Tam
Reference level ............−20 dBm Center frequency ..........10.7 MHz 4. On the HP 8560E/EC, set the cal oscillator to 10.7 MHz by selecting Fixed Tuned to 10.7 MHz 5. A −25 dBm signal from A5J5 should be displayed. If the signal is missing, disconnect W52 (coax 9) from A5J4.
Page 415: Table 8-3 Sweep Width Settings
If a failure is indicated in the IF/LOG CHECK, press to provide more detailed More Info information about the detected failure. If an HP-IB printer is available, connect it to the spectrum analyzer HP-IB connector, then press for a hard-copy output.
Page 416: Automatic If Adjustment
2. Set the second spectrum analyzer center frequency to 10.7 MHz and the reference level to −30 dBm. 3. On the HP 8560E/EC under test, press and observe the FULL IF ADJ display of the second spectrum analyzer.
Page 417: Parameters Adjusted
IF Section Automatic IF Adjustment Parameters Adjusted The following IF parameters are adjusted in the sequence listed: 1. Amplitude a. Video Offsets: analog (using log ampliﬁer video offset DAC) and digital (applying stored constant to all readings) 1. Linear Scale Offset 2.
Page 418: Requirements
IF Section Automatic IF Adjustment 3. Crystal Bandwidths a. The cal oscillator sweep rate is measured against the 100 kHz resolution bandwidth ﬁlter skirt. This result is used in compensating the sweeps used for adjusting the crystal bandwidths. b. 10 kHz resolution bandwidth 1.
Page 419 IF Section Automatic IF Adjustment The references against which the Automatic IF Adjustment routine aligns are: • 10 MHz reference (A15) • Linear Scale Fidelity, especially the 10 dB gain stage in A4 Linear Ampliﬁer block. • 15 dB Reference Attenuator (A5) •...
Page 420: Performance Test Failures
IF Section Performance Test Failures Performance Test Failures Failures in IF-Section-related performance tests may be investigated using the following information: IF Gain Uncertainty Performance Test Failure of this performance test indicates a possible problem with the spectrum analyzer IF gain circuits. Assuming no major IF problems causing IF adjustment errors, IF gain problems in the ﬁrst 50 dB of IF gain (REF LVLs of 0 dBm to −50 dBm with 10 dB ATTEN) are a result of faults on the A5 IF Assembly.
Page 421: Scale Fidelity Performance Test
IF Section Performance Test Failures Scale Fidelity Performance Test Failure of this performance test indicates a possible problem with the A4 assembly. If the Linear, 5 dB/DIV, or 10 dB/DIV scales are out of speciﬁcation, the fault is most likely on the log ampliﬁer assembly (P/O A4). If only the 1 dB/DIV or 2 dB/DIV scales are out of speciﬁcation, the fault is most likely on the A3 interface assembly.
Page 422: Log Amplifier Assembly (P/O A4)
For troubleshooting, it is recommended that you use an active probe, CAUTION such as an HP 85024A, and another spectrum analyzer. If an HP 1120A active probe is being used with a spectrum analyzer having dc coupled inputs, such as the HP 8566A/B, HP 8569A/B and the HP 8562A/B, either set the active probe for an ac-coupled output or use a dc-blocking capacitor between the active probe and the spectrum analyzer input.
Page 423: Linear Amplifiers
Linear Ampliﬁers Refer to function block C of A4 log ampliﬁer schematic diagram (sheet 2 of 4) in the HP 8560 E-Series Spectrum Analyzer Component Level n. The Linear Amps consist of two variable gain stages, Informatio U201C and U201E as well as the buffer ampliﬁer A4U201B, A4U201D, and A4Q201.
Page 424: Table 8-4 If Gain Application Guidelines (Atten=10 Db)
Video Offset Refer to function block P of A4 log ampliﬁer schematic diagram (sheet 3 of 4) in the HP 8560 E-Series Spectrum Analyzer Component Level Informatio The circuit provides a programmable video offset, with a step size of 5 mV, from −300 mV to +900 mV.
Page 425: Video Output
IF Section Log Ampliﬁer Assembly (P/O A4) 3. Set the signal generator controls as follows: Amplitude ..............+10 dBm Frequency ............... 10.7 MHz 4. Simultaneously decrease the signal generator output and spectrum analyzer reference level in 10 dB steps down to −110 dBm. At each step, the signal displayed on the spectrum analyzer should be close to the reference level.
Page 426: Frequency Counter Prescaler/Conditioner
Frequency Counter Prescaler/Conditioner Refer to function block Q of A4 log ampliﬁer schematic diagram (sheet 4 of 4) in the HP 8560 E-Series Spectrum Analyzer Component Level Informatio The frequency counter prescaler/conditioner divides the frequency by two, and then attenuates it. The circuit consists of frequency divider (U703A) and an output attenuator.
Page 427: 4.8 Khz If Filters
4. Set another spectrum analyzer, such as the HP 8566A/B, to 4.8 kHz center frequency and 2 kHz span. If a dc block is not used, damage to the HP 8566A/B results. The CAUTION HP 8566A/B and many other spectrum analyzers have dc-coupled inputs and cannot tolerate dc voltages on their inputs.
Page 428: 4.8 Khz And 10.7 Mhz If Filters
SGL SWP 5. Set the HP 8566A/B to 4.8 kHz center frequency and 2 kHz span. Damage to the HP 8566A/B results if a dc block is not used. The HP CAUTION 8566A/B and many other spectrum analyzers have dc-coupled inputs and cannot tolerate dc voltages on their inputs.
Page 429: 10.6952 Mhz Vcxo
10.6952 MHz VCXO Refer to function block E of A4 log ampliﬁer schematic diagram (sheet 2 of 4) in the HP 8560 E-Series Spectrum Analyzer Component Level Informatio The purpose of the 10.6952 MHz voltage-controlled crystal oscillator (VCXO) is to provide an LO for down-converting the peak of the 10.7 MHz IF ﬁlter passband to 4.8 kHz.
Page 430: Synchronous Detector
Limiter Refer to function block G of A4 Log Ampliﬁer Schematic Diagram (sheet 2 of 4) in the HP 8560 E-Series Spectrum Analyzer Component Level Informatio The limiter consists of 7 identical 20 dB gain stages. A "log narrow ﬁlter" is switched in for RBWs ≤100 kHz. This ﬁlter is switched in using the control lines NARROW between the 4th and 5th stages.
Page 431: Isolation Amplifier
Isolation Ampliﬁer Refer to function block H of A4 Log Ampliﬁer Schematic Diagram (sheet 3 of 4) in the HP 8560 E-Series Spectrum Analyzer Component Level Informatio The isolation ampliﬁer prevents LO port to RF port feedthrough in the mixer from feeding back to the input of the limiter and causing loop oscillations.
Page 432: Video Mux
IF Section Log Ampliﬁer Assembly (P/O A4) Video MUX The video MUX switches the video output between linear, log and 4.8 kHz IF (for digital RBWs). The demod video is an unused feature. The easiest way to troubleshoot this circuit is to look for blown FETs. Bad FETs are characterized by having signiﬁcant gate current.
Page 433: A5 If Assembly
IF Section A5 IF Assembly A5 IF Assembly The input switch connects the IF to either the cal oscillator on the A4 assembly or the 10.7 MHz IF output from the A15 RF assembly. The automatic IF adjustment uses the cal oscillator on A4 at instrument turn-on and between sweeps to align the IF ﬁlters and step-gain ampliﬁers.
Page 434: If Signature
For troubleshooting, it is recommended that you use an active probe, CAUTION such as an HP 85024A, and another spectrum analyzer. If an HP 1120A active probe is being used with a spectrum analyzer having dc-coupled inputs, such as the HP 8566A/B, HP 8569A/B and the HP 8562A/B, either set the active probe for an ac-coupled output or use a dc-blocking capacitor between the active probe and the spectrum analyzer input.
Page 435 HP 8566A/B and SINGLE ADJ CURR IF on the HP 8560E/EC. The IF signature is displayed on the HP STATE 8566A/B display. It may be necessary to experiment with different time intervals between initiating the sweep on the HP 8566A/B and initiating the current IF state adjustment on the HP 8560E/EC.
Page 436: Figure 8-3 If Adjust Signature
IF Section A5 IF Assembly Figure 8-3 IF Adjust Signature Chapter 8...
Page 437: Figure 8-4 . Detailed If Adjust Signature (1)
IF Section A5 IF Assembly Figure 8-4 Detailed IF Adjust Signature (1) Chapter 8...
Page 438: Figure 8-5 . Detailed If Adjust Signature (2)
IF Section A5 IF Assembly Figure 8-5 Detailed IF Adjust Signature (2) Chapter 8...
Page 439: Figure 8-6 . Detailed If Adjust Signature (3)
IF Section A5 IF Assembly Figure 8-6 Detailed IF Adjust Signature (3) Chapter 8...
Page 440: Figure 8-7 . Detailed If Adjust Signature (4)
IF Section A5 IF Assembly Figure 8-7 Detailed IF Adjust Signature (4) Chapter 8...
Page 441: Figure 8-8 . Detailed If Adjust Signature (5)
IF Section A5 IF Assembly Figure 8-8 Detailed IF Adjust Signature (5) Chapter 8...
Page 442: Common If Signature Problems
IF Section A5 IF Assembly Common IF Signature Problems Region A of Figure 8-4 on page 436 is noisy: Suspect the ﬁrst LC pole. Region B of Figure 8-4 on page 436 is ﬂat: Suspect the third step-gain stage, the ﬁne attenuator, or the fourth LC-pole output ampliﬁer.
Page 443: Figure 8-9 Noisy Signature
IF Section A5 IF Assembly Figure 8-9 Noisy Signature Chapter 8...
Page 444: Figure 8-10 Noise With Correct Shape
IF Section A5 IF Assembly Figure 8-10 Noise with Correct Shape Chapter 8...
Page 445: Figure 8-11 Region B Amplitude Variation
IF Section A5 IF Assembly Figure 8-11 Region B Amplitude Variation Chapter 8...
Page 446: Figure 8-12 . Region B Amplitude Offset
IF Section A5 IF Assembly Figure 8-12 Region B Amplitude Offset 1 MHz Resolution Bandwidth Problems Check the crystal shorting switches as follows: 1. On the spectrum analyzer, press and set the controls as PRESET follows: Resolution bandwidth ..........1 MHz Span ................
Page 447: Figure 8-13 Faulty Crystal Short
IF Section A5 IF Assembly Figure 8-13 Faulty Crystal Short Chapter 8...
Page 448: Figure 8-14 Faulty Lc Pole
IF Section A5 IF Assembly Figure 8-14 Faulty LC Pole 30 kHz Resolution Bandwidth Problems Shape factor too high: Shape factor is the ratio of the 60 dB bandwidth to the 3 dB bandwidth. Shape factor should be less than 15:1. If one of the LC poles malfunctions, the shape factor may be the only indication of the failure.
Page 449: Figure 8-15 Faulty Crystal Symmetry
IF Section A5 IF Assembly 3 kHz and 10 kHz Resolution Bandwidth Problems Asymmetric Filter Response: Check the crystal symmetry control with the following steps: 1. Press PRESET 2. Set the spectrum analyzer controls as follows: Resolution bandwidth ..........3 kHz Span ................
Page 450: Step Gains
Step Gains Refer to function blocks B, H, and I of A5 IF ﬁlter schematic diagram (sheets 1 of 3 and2 of 3) in the HP 8560 E-Series Spectrum Analyzer Component Level Informatio 1. On the spectrum analyzer, press PRESET...
Page 451: Cal Oscillator Assembly (P/O A4)
IF Section Cal Oscillator Assembly (P/O A4) Cal Oscillator Assembly (P/O A4) The cal oscillator on the A4 assembly supplies the stimulus signal for automatic IF adjustments. Normally, the oscillator operates only during retrace (for a few milliseconds) to adjust part of the IF. (All IF parameters are to be readjusted about every 5 minutes.) With continuous IF adjust ON, a group of IF parameters are adjusted during each retrace period (non-disruptive).
Page 452: Cal Oscillator Unlock At Beginning Of If Adjust
IF Section Cal Oscillator Assembly (P/O A4) If error messages ERR 581 AMPL or ERR 582 AMPL appears, refer to NOTE error message ERR 582 AMPL in Chapter 6 and perform the procedure provided. 1. The oscillator output frequency should exceed 11.5 MHz if the CAL OSC TUNE line, A4U804 pin 14, exceeds +9 V.
Page 453: Inadequate Cal Osc Amptd Range
Inadequate CAL OSC AMPTD Range Refer to function block AC of A4 Log Ampliﬁer Schematic Diagram in HP 8560 E-Series Spectrum Analyzer Component Level Informatio 1. If A4R826, CAL OSC AMPTD, has inadequate range to perform the IF Amplitude Adjustment, press 2.
Page 454: 300 Hz To 3 Khz Resolution Bandwidth Out Of Specification
3. Connect the source connection of a 3 dB power splitter (Minicircuits Model: ZSC J-2-1) to A4J8. Connect one output of the power splitter to the input of an HP 8566A/B spectrum analyzer. Connect the other output of the power splitter to cable W52 (coax 9).
Page 455 A4U802, A4U803, A4U804, or A4U106. 10.Severe failure of the bandwidth accompanied by subtle errors in the output signal indicate an A5 failure. 11.Set the HP 8566A/B controls as follows: Center frequency ..........10.710 MHz Resolution bandwidth ..........10 kHz Video bandwidth ............
Page 456: Figure 8-16 Output Waveform, 10 Khz Resolution Bandwidth
IF Section Cal Oscillator Assembly (P/O A4) Figure 8-16 Output Waveform, 10 kHz Resolution Bandwidth Chapter 8...
Page 457: Figure 8-17 Output Waveform, 3 Khz Resolution Bandwidth
IF Section Cal Oscillator Assembly (P/O A4) Figure 8-17 Output Waveform, 3 kHz Resolution Bandwidth Chapter 8...
Page 458: Figure 8-18 Output Waveform, 1 Khz Resolution Bandwidth
IF Section Cal Oscillator Assembly (P/O A4) Figure 8-18 Output Waveform, 1 kHz Resolution Bandwidth Chapter 8...
Page 459: Figure 8-19 Output Waveform, 300 Hz Resolution Bandwidth
IF Section Cal Oscillator Assembly (P/O A4) Figure 8-19 Output Waveform, 300 Hz Resolution Bandwidth Chapter 8...
Page 460: Figure 8-20 Failed Crystal Set Symptoms
Failed Crystal Set Symptoms Low-Pass Filter Refer to function block AB of A4 Log Ampliﬁer Schematic Diagram in HP 8560 E-Series Spectrum Analyzer Component Level Informatio 1. Connect a DVM positive probe to A4J9 pin 4. 2. On the spectrum analyzer, press 3.
Page 461 Sweep Generator Refer to function block Z of A4 log ampliﬁer schematic diagram in the HP 8560 E-Series Spectrum Analyzer Component Level Informatio A properly operating sweep generator generates a series of negative-going parabolas. Before the sweep, switches A4U802C and A4U802D turn on, shorting A4C802 and A4C801 (the output is at 0 volts).
Page 462 IF Section Cal Oscillator Assembly (P/O A4) pin 3 with an oscilloscope. The signal should be 20 mV peak-to-peak ±25% (with +2.5 V of dc bias). If the signal measures outside these limits, the fault is prior to the audio ampliﬁer (block T). 7.
Page 463 IF Section Cal Oscillator Assembly (P/O A4) Chapter 8...
Page 464: Figure 8-21 . A4 Log Amplifier/Cal Oscillator Block Diagram (1 Of 2)
IF Section Cal Oscillator Assembly (P/O A4) Figure 8-21 A4 Log Ampliﬁer/Cal Oscillator Block Diagram (1 of 2) Replace with sj123e Chapter 8...
Page 465 IF Section Cal Oscillator Assembly (P/O A4) Chapter 8...
Page 466: Figure 8-21 . A4 Log Amplifier/Cal Oscillator Block Diagram (2 Of 2)
IF Section Cal Oscillator Assembly (P/O A4) Figure 8-21 A4 Log Ampliﬁer/Cal Oscillator Block Diagram (2 of 2) Replace with sj122e Chapter 8...
Page 467 IF Section Cal Oscillator Assembly (P/O A4) Chapter 8...
Page 468: Figure 8-22 A5 If Assembly Block Diagram
IF Section Cal Oscillator Assembly (P/O A4) Figure 8-22 A5 IF Assembly Block Diagram Replace with sj124e Chapter 8...
Page 469 IF Section Cal Oscillator Assembly (P/O A4) Chapter 8...
Page 470 Controller Section...
Page 471 Controller Section Introduction Introduction The controller section includes the A2 controller assembly, A19 HP-IB assembly, and BT1 battery. The presence of a display (graticule and annotation) veriﬁes that most of the A2 controller assembly is operating properly. Troubleshooting Using the TAM (8560E) ......
Page 472: Troubleshooting Using The Tam (8560E)
Use the following procedure if the instrument display is blank. This procedure substitutes an HP-IB printer for the display. 1. Connect the printer to the HP 8560E and set the printer address to the value required by the TAM. This is usually 1.
Page 473: Figure 9-1 A2 Test Connectors
Controller Section Troubleshooting Using the TAM (8560E) . (The top soft key is #1.) KEY #1 6. The yellow LED next to A2J11 should blink approximately ten times. If the LED fails to blink correctly, troubleshoot the digital section of the A2 controller assembly.
Page 474 Controller Section Troubleshooting Using the TAM (8560E) 12.If no failures were indicated in testing the A2 controller, move the probe cable to A17J4. 13.Press and wait ﬁve seconds. SOFT KEY #1 14.Press . The results will be sent to the printer.
Page 475: Digital Signature Analysis −Dsa (8560E)
DISable position to the ENAble position. 3. Remove jumper A2E1. A2E1 is a 16 pin dual-in-line package located in the middle of the A2 Assembly. Set the HP 8560E LINE switch 4. Use an oscilloscope to conﬁrm that address lines, address strobe, and chip selects are toggling at proper levels.
Page 476: Display Problems (8560E)
CRT. The vectors are each 6 µs long (width of the INTEGRATE pulse) followed by a 1 µs SAMPLE pulse. When characters of text are being drawn, the vectors are 3 µs long. 1. On the HP 8560E press PRESET 2. On the HP 8560E, press , and .
Page 477: Figure 9-2 Line Generator Output Waveforms
Blanking Refer to function block J of A2 Controller Schematic Diagram (sheet 1 of 4) in the HP 8560 E-Series Component Level Information. 1. Using an oscilloscope, check for blanking pulses at A2J202 pin 15. A2U206 pin 6 should be at a TTL high. Blanking pulses turn the...
Page 478: Figure 9-3 Blanking Waveforms
Controller Section Display Problems (8560E) 5. The waveforms in Figure 9-3 on page 477 must match the timing of the vectors being drawn. To do this, U215B is used to adjust the leading edge, and U215A is used to adjust the trailing edge. The ﬁrst six horizontal divisions show the line drawing mode where the VECTOR pulses are 6 µs apart.
Page 479: Figure 9-4 Expanded Blanking Waveforms
Display Jumbled or Trace Off Screen Refer to function blocks D and I of A2 controller schematic diagram (sheet 1 of 4) in the HP 8560 E-Series Component Level Information. The two line generators are identical circuits, so the following steps apply to both.
Page 480: Figure 9-5 Switch Driver Waveform Lchar
Controller Section Display Problems (8560E) amplitude. LCHAR is low when characters are drawn. INTEGRATE: Q202 collector SAMPLE: Q201 collector LCHAR: U207 pin 9 VECTOR: U213 Pin 9 Figure 9-5 Switch Driver Waveform LCHAR 7. All of the DAC inputs should change state two or more times within a 5 ms window.
Page 481 Controller Section Display Problems (8560E) Coupling ..............ac Triggering ..........External 10.Trigger the oscilloscope on the signal at U207 pin 8 (LBRIGHT). 11.The following waveforms should look like Figure 9-6 on page 481 the oscilloscope. The top two traces are for the X line generator and the bottom two traces for the Y line generator.
Page 482: Figure 9-6 Distorted X/Y Line Generator Waveforms
Controller Section Display Problems (8560E) Figure 9-6 Distorted X/Y Line Generator Waveforms Figure 9-7 Expanded X/Y Line Generator Waveforms Chapter 9...
Page 483: Figure 9-8 Normal X/Y Line Generator Waveforms
Controller Section Display Problems (8560E) Figure 9-8 Normal X/Y Line Generator Waveforms Intensity 1. The length of the vector being drawn can effect intensity. U210A, U210C, and U210D sum the lengths of the X and Y vectors. Refer to "Long Lines Dimmer than Short Lines" in this chapter.
Page 484: Bad Characters Or Graticule
Long Lines Dimmer than Short Lines Refer to function block M of A2 controller schematic diagram (sheet 1 of 4) in the HP 8560 E-Series Component Level Information. The Z output function block contains the absolute value circuits which determine the intensity of vectors drawn on the display. The vector length is approximated by the sum of the X length and Y length.
Page 485: Figure 9-9 Delta X Waveform
Controller Section Display Problems (8560E) Figure 9-9 Delta X Waveform 8. Move the oscilloscope channel A probe to J201 pin 14. 9. The waveforms should look like those illustrated in Figure 9-10 on page 485. If the waveform at J201 pin 14 is bad, troubleshoot the Y line generator (function block I of A2 controller schematic, sheet 1 of 10.If the waveform at U210D pin 14 is bad, troubleshoot the Z output...
Page 486: Figure 9-10 Delta Y Waveform
Controller Section Display Problems (8560E) Figure 9-10 Delta Y Waveform Chapter 9...
Page 487: Figure 9-11 . Def1 Synchronization
Controller Section Analog Zero-Span Problems (8560E only) Analog Zero-Span Problems (8560E only) 1. On the HP 8560E, press , 1, PRESET SPAN ZERO SPAN SWEEP , and MORE CRT ADJ PATTERN 2. Set an oscilloscope to the following settings: Amplitude scale ............10 V/div Sweep time ...............
Page 488: Frequency-Count Marker Problems
A4 log ampliﬁer/cal oscillator or the A2 controller assembly: 1. Disconnect W53 from A2J13. 2. Connect the output of a synthesized source, such as an HP 3335A, to A2J13. 3. Set the synthesized source to the following settings: Amplitude ..............
Page 489 A4 log ampliﬁer/cal oscillator or A2 controller assembly: 1. Disconnect W53 from A2J7. 2. Connect the output of a synthesized source, such as an HP 3335A, to A2J7. 3. Set the synthesized source to the following settings: Amplitude ..............
Page 490: Frequency Counter
Controller Section Frequency Counter (8560EC) Frequency Counter (8560EC) The frequency counter counts the frequency of the last IF and provides accurate timing signals for digital zero-spans. The circuit also provides timing signals to the ADC (analog to digital converter) on the A3 interface assembly.
Page 491: Table 9-2 Gate Times
Controller Section Frequency Counter (8560EC) Table 9-2 Gate Times Counter Res Gate Time* A2TP16 A2TP15 (U15 pin 20 low state) 10 Hz 200 ms 2 MHz 4.18 kHz 100 Hz 20 ms 2 MHz 418 Hz 1 kHz 2 ms 2 MHz 41.8 Hz 10 kHz...
Page 492 Controller Section Frequency Counter (8560) Frequency Counter (8560) See function block Z of A2 schematic diagram (sheet 4 of 4) in the HP 8560 E-Series Component Level Information. Spectrum Analyzer The frequency counter counts the frequency of the last IF and provides accurate timing signals for digital zero-spans.
Page 493: Table 9-3 Gate Times
Controller Section Frequency Counter (8560) Table 9-3 Gate Times Counter Res Gate Time* A2TP16 A2TP15 (U511 pin 3 high state) 10 Hz 200 ms 2 MHz 4.18 kHz 100 Hz 20 ms 2 MHz 418 Hz 1 kHz 2 ms 2 MHz 41.8 Hz 10 kHz...
Page 494 A2 controller assembly, connect the ground (or common) lead to the ground-plane trace associated with the shield. This digital ground plane is totally isolated from the chassis. 1. Press on the HP 8560 EC-series spectrum analyzer and set PRESET the controls as follows: Center frequency ..........300 MHz Span .................
Page 495 Controller Section Video Input Scaling Ampliﬁers and Limiter (8560EC) 9. Disconnect the CAL OUTPUT signal from the INPUT 50Ω connector. 10.The level at pin 3 of U10 should drop to −0.35 Vdc. If the level is less (more negative) than −0.35 Vdc, replace voltage clamp D3. 11.Measure the dc level of the ﬂash video at pin 2 of R47.
Page 496 Controller Section 12-Bit Flash ADC (8560EC) 12-Bit Flash ADC (8560EC) The ﬂash ADC (U22) converts the analog video signal into 12-bit digital values at a ﬁxed rate of 12 megasamples per second. When measuring voltages or waveforms on the Fast ADC of the A2 controller assembly, connect the ground (or common) lead to the ground-plane trace associated with the shield.
Page 497 Controller Section 32 K-Byte Static RAM (8560EC) 32 K-Byte Static RAM (8560EC) The static RAM stores the ADC samples that are taken when the Fast ADC circuitry is in the "write" mode. When not in the "write" mode, the static RAM is read by the CPU to retrieve the fast ADC data. The 8-bit DFADC bus connects the outputs of latches within U35 to the data port of static RAM U21.
Page 498 Controller Section Reference Clock (8560EC) Reference Clock (8560EC) The reference clock circuitry takes the 8 MHz square wave clock and triples the frequency to 24 MHz. This is accomplished through two stages of ﬁltering of the 8 MHz signal, to extract the third harmonic. The 8 MHz signal is ﬁrst passed through a high pass ﬁlter consisting of C123 and L15.
Page 499 Controller Section 16 MHz Harmonic Filter (8560EC) 16 MHz Harmonic Filter (8560EC) The 16 MHz Harmonic Filter generates a 16 MHz signal through a series of stages, consisting of a ﬁlter and a comparator. The 10 MHz reference signal from the A15 RF assembly is ﬁrst prescaled by 2.5 to yield a 4 MHz signal with a 20 percent duty cycle.
Page 500: State- And Trace-Storage Problems
Controller Section State- and Trace-Storage Problems State- and Trace-Storage Problems State storage is in the two of the four Program RAMs and trace storage is in the two display RAMs. With low battery voltage, it is normal for states and traces to be retained if the power is off for less than 1 minute.
Page 501: Keyboard Problems
A2 controller assembly is working properly. Refer to Chapter 8, "ADC/Interface Section." 4. If there was no response over HP-IB, the A2 controller is probably defective. Be sure to also check the A19 HP-IB assembly and A19W1.
Page 502: Figure 9-12 A2 Controller Block Diagram (E-Series)
Controller Section Keyboard Problems Figure 9-12 A2 Controller Block Diagram (E-Series) replace with sj125e Chapter 9...
Page 503 Controller Section Keyboard Problems Chapter 9...
Page 504: Figure 9-13 A2 Controller Block Diagram (Ec-Series)
Controller Section Keyboard Problems Figure 9-13 A2 Controller Block Diagram (EC-Series) replace with sj118c Chapter 9...
Page 505 Controller Section Keyboard Problems Chapter 9...
Page 506 Synthesizer Section...
Page 507 Synthesizer Section Introduction Introduction The synthesizer section includes the A7 ﬁrst LO distribution ampliﬁer, A11 YTO, and parts of the A14 frequency control and A15 RF assemblies. Simpliﬁed and detailed block diagrams for each assembly are located at the end of this chapter. Synthesizer Troubleshooting Section.........
Page 508 1120A active probe is being used with a spectrum analyzer, such as the HP 8566A/B, or HP 8569A/B having dc coupled inputs, either set the active probe for an ac coupled output or use a dc blocking capacitor (HP 11240B) between the active probe and the spectrum-analyzer input.
Page 509: Synthesizer Troubleshooting Section
Synthesizer Troubleshooting Section Synthesizer Troubleshooting Section The A11 YTO (the HP 8560E/EC ﬁrst LO) is a YIG-tuned oscillator which tunes from 2.95 to 6.8107 GHz. The A7 LO distribution ampliﬁer (LODA) levels the output of A11 and distributes the signal to the A8 low band mixer, A10 YIG-tuned mixer/ﬁlter, A15U100 sampler, and the...
Page 510: Table 10-1 Center Frequency Tuning Values
If the tune voltage is correct, but the ADC measures the voltage and determines it to be out of speciﬁcation, troubleshoot the A3 assembly ADC MUX. Table 10-1 Center Frequency Tuning Values Sampling Oscillator HP 8560E/EC Center Frequency (MHz) Frequency (MHz) 2156.3 285.000 2176.3 286.364...
Page 511 Span ................0 Hz c. Connect a power meter directly to the output of the A11 YTO. d. Press the HP 8560E/EC step-up key and measure the YTO output power at each step. e. Verify that the output power of the A11 YTO is between +9 and +13 dBm.
Page 512: Figure 10-1 Yto Loop Test Setup
HP 8340A/B synthesized sweeper to A15U100J1. Figure 10-2 on page 512. 21.Connect a BNC cable from the HP 8560E/EC 10 MHz REF IN/OUT to the HP 8340A/B FREQUENCY STANDARD EXT input. 22.Set the HP 8340A/B to the following settings:...
Page 513: Figure 10-2 Sampler And Sampling Oscillator Test Setup
−5 dBm Power level 23.Set the HP 8560E/EC to the following settings: Span ................. 0 Hz Trigger ................Single 24.Set the HP 8560E/EC and HP 8340A/B frequencies to the combinations listed in Table 10-2 on page 513 and press SGL SWP the spectrum analyzer.
Page 514: Table 10-2 Sampling Oscillator Test Frequencies
Synthesizer Section Synthesizer Troubleshooting Section 29.On the HP 8560E/EC, press SGL SWP 30.Move jumper A14J23 to the TEST position. 31.Disconnect W34 from A15U100J1 and measure the power of the signal at the end of W34. 32.If the power is less than −6.5 dBm, suspect W34, A7 LODA, or A11 YTO.
Page 515: Test Setup Troubleshooting
YTO to be controlled only by the main coil tune DAC. It is best to troubleshoot the synthesizer section with the HP 8560E/EC span set to 0 Hz (even though it is still possible to sweep the Main and FM coils of the YTO).
Page 516: Figure 10-3 A14 And A15 Test Connectors
Synthesizer Section Troubleshooting Using the TAM Troubleshooting Using the TAM When using automatic fault isolation, the TAM indicates suspected circuits that need to be manually checked. Use Table 10-4 on page 516 to locate the manual procedure. Table 10-5 on page 517 lists assembly test connectors associated with each manual probe troubleshooting test.
Page 517: Figure 10-4 Tam Connector Pin Locations
Synthesizer Section Troubleshooting Using the TAM Figure 10-4 TAM Connector Pin Locations Table 10-3 Measured Signal Line Location Measured Signal Line Connector Pin MSL1 pin 1 MSL2 pin 2 MSL3 pin 3 MSL4 pin 4 MSL5 pin 5 pin 6 MSL6 pin 13 MSL7...
Page 518 Synthesizer Section Troubleshooting Using the TAM Table 10-4 Automatic Fault Isolation References Suspected Circuit Indicated by Automatic Manual Procedure to Perform Fault Isolation Check current source First LO Span Problems (All Spans) (steps 14-21) Check FM loop sense Unlocked YTO PLL (steps 28-34) Check level at ampliﬁer Input Third LO Driver Ampliﬁer (steps 1-6) Check levels into mixer U400...
Page 519 Synthesizer Section Troubleshooting Using the TAM Table 10-5 TAM Tests versus Test Connectors Manual Probe Measured Signal Connector Troubleshooting Test Lines Main loop error volt DVR Option drive Option drive switch Option drive DAC ±10 V reference A14J18 MS1, MS2 LODA drive MS5, MS6, MS7, Main coil tune DAC...
Page 520: Table 10-5 Tam Tests Versus Test Connectors
Synthesizer Section Troubleshooting Using the TAM Table 10-5 TAM Tests versus Test Connectors Manual Probe Measured Signal Connector Troubleshooting Test Lines A15J200 OFL error voltage Negative 10 volt supply Offset lock loop BW DAC MS5,MS7,MS8 A15J400 Positive 15 volt supply Offset lock RF buffer IF AMP/limiter bias Offset lock loop buffer D...
Page 521: General Pll Troubleshooting
Synthesizer Section General PLL Troubleshooting General PLL Troubleshooting The synthesizer section relies heavily on phase-locked loops (PLL). Typically, faulty PLLs are either locked at the wrong frequency or unlocked. The information below applies to troubleshooting these two classes of problems on a generalized PLL. PLL Locked at Wrong Frequency Numbers in the following text identify items in Figure 10-5 on page...
Page 522: Figure 10-5 Pll Locked At Wrong Frequency
Synthesizer Section General PLL Troubleshooting Figure 10-5 PLL Locked at Wrong Frequency Unlocked PLL An unlocked PLL can be caused by problems inside or outside the PLL. Troubleshoot this problem by working backward from the oscillator as described in the steps below. Numbers in the following text identify items in Figure 10-6 on page 522.
Page 523: Figure 10-6 Unlocked Pll
Synthesizer Section General PLL Troubleshooting 1. The loop integrator output voltage (1) should be attempting to tune the oscillator to the correct frequency. • The voltage at (1) should increase as the frequency increases on all of the PLLs: Table 10-6 TAM Tests versus Test Connectors Measurement Point YTO PLL...
Page 524 Synthesizer Section General PLL Troubleshooting step 1, the problem is external to the PLL. For example, the reference frequency could be faulty. If the integrator output voltage appears incorrect, conﬁrm that the pulses out of the phase detector (2) are attempting to tune the oscillator in the correct direction. 3.
Page 525: Unlocked Reference Pll (100 Mhz Vcxo)
Troubleshooting (100 MHz VCXO) 1. Using an active probe/spectrum analyzer combination, such as the Check 100 MHz VCXO, tripler, HP 85024A/HP 8566B, measure the tripler output at A15TP700. The tripler output should be +3 dBm ±2 dB. and doubler (steps 1-7) 2.
Page 526 Synthesizer Section Unlocked Reference PLL (100 MHz VCXO) 8. If the 100 MHz oscillator is working, the reason for the unlocked condition is either a problem in the 10 MHz reference or a fault in the signal path around the loop. Check 10 MHz 9.
Page 527 Synthesizer Section Unlocked Reference PLL (100 MHz VCXO) 20.If the loop is unlocked, and there is no signal at one of the phase/frequency detector inputs, one phase detector output will be at TTL low and the other will be at TTL high. For example, if there is no input signal at U504 pin 3, U504 pin 5 will be TTL low and U503 pin 9 will be TTL high.
Page 528 Synthesizer Section Unlocked Reference PLL (100 MHz VCXO) • Measure the level of 300 MHz at A15 TP505 with an active probe/spectrum analyzer combination. If the signal is less than +2 dBm, repeat the ﬁrst 27 steps of this procedure. •...
Page 529: Third Lo Driver Amplifier (100 Mhz Vcxo)
Synthesizer Section Unlocked Reference PLL (100 MHz VCXO) Third LO Driver Ampliﬁer (100 MHz VCXO) The third LO driver ampliﬁer (Q503) ampliﬁes the 300 MHz from the 300 MHz distribution ampliﬁer to a sufﬁcient level to drive the LO port of the double balanced mixer.
Page 530: Unlocked Reference Pll (600 Mhz Sawr)
The following information is for A15 RF assemblies earlier than NOTE 08563-60054, 08563-60055, or 08563-60056. For A15 RF assemblies with the aforementioned HP part numbers or later, refer to Unlocked Reference PLL (100 MHz VCXO) earlier in this chapter. Operation (600 MHz SAWR) The reference PLL 600 MHz output is generated by a 600 MHz SAWR (surface acoustical wave resonator) VCO.
Page 531 2. Refer to function block X of A15 RF schematic. 15.Measure the signals at the following test points with an active probe/spectrum analyzer combination such as an HP 85024A/HP 8566A/B. The signal level at TP701 should be sufﬁcient to drive an ECL input.
Page 532 Synthesizer Section Unlocked Reference PLL (600 MHz SAWR) 19.If the loop is unlocked, but signals are present on both inputs of the phase/frequency detector, the output pulses will be superimposed on each other. 20.If the loop is unlocked, and there is no signal at one of the phase/frequency detector inputs, one phase detector output will be at TTL low and the other will be at TTL high.
Page 533 Synthesizer Section Unlocked Reference PLL (600 MHz SAWR) 28.If the front panel CAL OUTPUT amplitude is out of speciﬁcation and cannot be brought within speciﬁcation by adjusting A15R561, CAL AMPTD, check the calibrator AGC ampliﬁer with the following steps. Refer to function block W of A15 RF schematic. •...
Page 534: Third Lo Driver Amplifier (600 Mhz Sawr)
Synthesizer Section Unlocked Reference PLL (600 MHz SAWR) Third LO driver ampliﬁer (600 MHz SAWR) The third LO driver ampliﬁer (Q503) ampliﬁes the 300 MHz from the 600 MHz phase-lock loop to a sufﬁcient level to drive the LO port of the double balanced mixer.
Page 535: Unlocked Offset Lock Loop (Sampling Oscillator)
2. This signal is not correct, refer to "Unlocked Reference PLL" in this chapter. Check levels into mixer (steps 3-13) 3. Set the HP 8560E/EC to the following settings: Center frequency ............. 300 MHz Span ................. 0 Hz Trigger ..............SINGLE 4.
Page 536: Table 10-7 Sampling Oscillator Pll Divide Numbers
Synthesizer Section Unlocked Offset Lock Loop (Sampling Oscillator) oscillator is 296 MHz. 6. The voltage required to tune the oscillator should measure between +15 Vdc and +19 Vdc. If the voltage is out of this range, perform the sampling oscillator adjustment in Chapter 2. 7.
Page 537 +0.6 V and greater than +2.2 V. 16.Disconnect the jumper from X201 pins 1 and 5. Disconnect the dc power supply which is connected to A15J200 pin 16. 17.Set HP 8560E/EC to the following settings: Center frequency ............. 300 MHz Span ................. 0 Hz 18.Use an oscilloscope to conﬁrm the presence of a 4 MHz TTL-level...
Page 538 Synthesizer Section Unlocked Offset Lock Loop (Sampling Oscillator) 21.Check the end of L417 (nearest C445) with an oscilloscope. With the oscilloscope input ac-coupled, a triangle waveform approximately 20 mVp-p should be present. 22.Short C441 with a wire jumper. (Connect the jumper from the end of R462 nearest C441 to the end of R460 nearest C443.) This changes the loop integrator into a voltage follower.
Page 539: Unlocked Yto Pll
Synthesizer Section Unlocked YTO PLL Unlocked YTO PLL Operation The A11 YTO is locked to two other oscillators: the fractional N oscillator, and the offset PLL sampling oscillator. For LO spans of 2.01 MHz and greater, either the FM or main coil of the YTO is swept directly.
Page 540: Table 10-8 . Amplifier Polarities
Synthesizer Section Unlocked YTO PLL reversed such that, with a negative sampler IF, an increasing YTO ERROR results in an increasing YTO frequency. This is accomplished with error-sign ampliﬁer, A14U328B. This ampliﬁer can be ﬁrmware-controlled to operate as either an inverting or non-inverting ampliﬁer.
Page 541: Troubleshooting An Unlocked Yto Pll
Unlocked YTO PLL Troubleshooting an Unlocked YTO PLL 1. If the YTO PLL is unlocked, error code 301 should be displayed. Place the HP 8560E/EC in zero span. Figure 10-7 on page 541 illustrates the simpliﬁed YTO PLL. 2. Move the jumper on A14J23 to connect pins 2 and 3 (TEST position).
Page 542: Figure 10-7 Troubleshooting An Unlocked Yto Pll
YTO Frequency Error = ________________________MHz −YTO YTO Frequency Error = YTO Frequency (MEASURED) Frequency (CALCULATED) 6. On the HP 8560E/EC, press , and MORE 1 OF 2 FREQ DIAGNOSE . Record the fractional N frequency below: FRAC N FREQ Fractional N frequency = _____________________________MHz...
Page 543 Synthesizer Section Unlocked YTO PLL Replacement of the phase/frequency detector chip A14U204 is not CAUTION recommended. The part is very delicate and requires special tooling to install successfully. 7. If the YTO frequency error recorded in step 5 is greater than 20 MHz, do the following: •...
Page 544 17.If the fractional N oscillator frequency is not correct, refer to "Unlocked Fractional N PLL" in this chapter. Check sampler drive output of A7 LODA (steps 19-22) 18.Set jumper A14J23 to the TEST position and set the HP 8560E/EC to the following settings: Center frequency ............ 2.9 GHz Span ................
Page 545 A15J101. Check FM loop sense (steps 28-34) 27.Set jumper A14J23 in the TEST position. 28.Set the HP 8560E/EC to the following settings: Center frequency ............. 300 MHz Span ................. 0 Hz 29.Connect an RF signal-generator output to A14J501. Set the signal generator to the following settings: Frequency ..............
Page 546: Table 10-9 Voltages In Fm Coil And Main Loop Drivers
Refer to function block J of A14 frequency control schematic. 42.Set the HP 8560E/EC to the settings listed below. This sets both DACs to 128 (the DAC setting range is 0 to 255). Center frequency ..........300 MHz Span ................
Page 547: Table 10-10 Main Coil Coarse And Fine Dacs Voltages
49.Measure the output of the main coil tune DAC (A14J18 pin 3) with a DVM. Refer to function block E of A14 frequency control schematic. 50.If the HP 8560E/EC center frequency is 300 MHz, the voltage at A14J18 pin 3 should measure −3.35 V ±0.25 V. The voltage may also be determined from the following equation: V = −(First LO Frequency −2.95 GHz) ×...
Page 548: Unlocked Fractional N Pll
If a synthesized spectrum analyzer is not available, connect A14J304 to NOTE the input of a 20 dB gain ampliﬁer, such as an HP 8447E. Connect the output of the ampliﬁer to the input of a frequency counter. 3. If the fractional N oscillator measures a stable 66.7 MHz, the fractional N PLL is probably locked.
Page 549: Table 10-11 Postscaler Divide Numbers
Synthesizer Section Unlocked Fractional N PLL 6. If neither LED is lit, but the output frequency is wrong by more than 1 MHz, check the postscaler, function block AV. 7. Check that the postscaler is dividing properly. The frequency at A14J304 should be equal to the frequency at A14TP4 divided by either 5, 6, or 7.
Page 550: Table 10-12 Unlocked Fractional N Troubleshooting Areas (08560-60069 And Above)
Synthesizer Section Unlocked Fractional N PLL A15 RF assembly. 3. Change the spectrum analyzer from the fractional N span to 0 Hz. 4. Check the frequency at A14TP1. It should equal the value found by pressing , and MORE 1 OF 2 FREQ DIAGNOSE RAW OSC FREQ 5.
Page 551 Synthesizer Section Unlocked Fractional N PLL 7. VCO clamp troubleshooting: Q131, Q132 and the associated components should limit the tune voltage at R240 to about −3.3 V to +11 V (±11 V for 08560-60062 and below). If the integrator (its output voltage is on TP13) tries to produce a voltage outside this range, excess current is shunted through CR131 and Q131 for positive excursions or CR132 and Q132 for negative excursions.
Page 552: Figure 10-8 Vco Bias Voltages For A14 Assemblies 08560-60069 And Above
Synthesizer Section Unlocked Fractional N PLL Figure 10-8 VCO Bias Voltages for A14 Assemblies 08560-60069 and Above Chapter 10...
Page 553: Figure 10-8A . Vco Bias Voltages For A14 Boards(08560-60062 And Below)
Synthesizer Section Unlocked Fractional N PLL Figure 10-8a VCO Bias Voltages for A14 boards(08560-60062 and below) 9. Divider and integrator troubleshooting: Measure the frequency of the pulses at TP6 in block AO. Look up the expected problem area in Table 10-14 on page 553 and go to the appropriate troubleshooting Chapter 10...
Page 554: Table 10-14 Divider And Integrator Troubleshooting
Synthesizer Section Unlocked Fractional N PLL steps. Table 10-14 Divider and Integrator Troubleshooting Measured TP6 Frequency Frequency Relative to Expected zero <2.5 MHz 2.5 MHz >2.5 MHz Value Measured > Dividers Dividers Dividers Det or expected integrator Measured < Both Det or Dividers Dividers...
Page 555 Synthesizer Section Unlocked Fractional N PLL c. The integrator op amp (U106) output (TP13) should try to go very positive (about +12 V) if its average input (TP12) is positive. If its average input is negative, it should try to go very negative (about −4 V).
Page 556: Table 10-15 Sweep Signal Destination Versus Span
Frequency Span Accuracy Problems Frequency Span Accuracy Problems The HP 8560E/EC employs lock-and-roll tuning to sweep the ﬁrst LO for spans greater than 2.0 MHz. The ﬁrst LO is locked to the start frequency immediately after the previous sweep has been completed.
Page 557: Table 10-16 Harmonic Mixing Number Versus Center Frequency
1. Perform the YTO adjustment procedure in Chapter 2. If the YTO adjustments cannot be performed, continue with step 2. 2. Set the HP 8560E/EC to the following settings: Start frequency ............10 MHz Stop frequency ............2.9 GHz...
Page 558: Yto Fm Coil Span Problems (Lo Spans 2.01 Mhz To 20 Mhz)
FM coil driver. 1. Perform the YTO Adjustment procedure in Chapter 2. If the YTO adjustments cannot be performed, continue with this procedure. 2. Set the HP 8560E/EC to the following settings: Center frequency ..........300 MHz Span ................ 20 MHz Sweep time ..............
Page 559: Table 10-17 Settings Of Sweep Switches
The voltage at A14U332 pin 2 should be approximately 19% of the voltage at A14J23 pin 2. g. If the ﬁrst LO frequency did not change in step e, turn off the HP 8560E/EC switch and disconnect W10 from A14J3.
Page 560: Fractional N Span Problems (Lo Spans ≤2 Mhz)
AS. HSCAN comes from the A3 interface assembly and goes to the sweep generator circuitry in function block A and to Fractional N. First LO Span Problems (All Spans) 1. Set the HP 8560E/EC to the following settings: Center frequency ..........300 MHz Span ................2 MHz Resolution BW ............
Page 561 Synthesizer Section Frequency Span Accuracy Problems 5. Set the spectrum analyzer to the following settings: Start frequency ............10 MHz Stop frequency ............2.9 GHz Sweep time ..............80 ms 6. Monitor A14J15 pin 14 for a 0 V to −7.4 V ramp. Switches U317A, U317B, and U317D should be open and U317C should be closed.
Page 562: Table 10-18 Settings Of Sweep Switches
Synthesizer Section Phase Noise Problems Phase Noise Problems System phase noise can be a result of noise generated in many different areas of the spectrum analyzer. When the spectrum analyzer is functioning correctly, the noise can be observed as a function of the distance away (the offset) from the carrier frequency.
Page 563: Reference Versus Reference Pll Phase Noise
Synthesizer Section Phase Noise Problems Reference versus Reference PLL Phase Noise If the problem seems to be in the frequency reference or reference PLL circuitry, measure the noise with internal and external references. If there is no difference, suspect the circuitry associated with the 100 MHz VCXO (or the SAWR A15U701 on earlier A15 RF assemblies).
Page 564: Sampler And Sampler If
YTO loop. When the IF is less than 87.14 MHz, PIN diodes switch a 120 MHz low pass ﬁlter in the sampler IF section. 1. Set HP 8560E/EC to the following settings: Center frequency ..........300 MHz Span ................
Page 565 +5 dBm. If the signal at A15TP101 is correct, but the signal at A15J101 is wrong, the fault lies in the sampler IF circuitry. Continue with the following steps. 9. Set the HP 8560E/EC to the following settings: Center frequency ............300 MHz Span ..................0 Hz 10.Set a microwave source to the following settings:...
Page 566: Sweep Generator Circuit
Synthesizer Section Sweep Generator Circuit (for Spectrum Analyzers with 100 s max. Sweep Time) Sweep Generator Circuit (for Spectrum Analyzers with 100 s max. Sweep Time) The sweep generator operates by feeding a constant current from DAC U307 into an integrator, U320B. See function block A of A14 frequency control schematic.
Page 567: Figure 10-9 . Simplified Sweep Generator
Synthesizer Section Sweep Generator Circuit (for Spectrum Analyzers with 100 s max. Sweep Time) Figure 10-9 Simpliﬁed Sweep Generator Chapter 10...
Page 568: Figure 10-10 . Simplified Sweep Generator During Retrace
Synthesizer Section Sweep Generator Circuit (for Spectrum Analyzers with 100 s max. Sweep Time) Figure 10-10 Simpliﬁed Sweep Generator during Retrace Chapter 10...
Page 569 Synthesizer Section Sweep Generator Circuit (for Spectrum Analyzers with 2000 s max. Sweep Time) Sweep Generator Circuit (for Spectrum Analyzers with 2000 s max. Sweep Time) The sweep generator circuitry generates a ramp from 0 to 10 volts during the sweep time. The available sweep times range from 50 µs to 2,000 seconds.
Page 570 Synthesizer Section Sweep Generator Circuit (for Spectrum Analyzers with 2000 s max. Sweep Time) sweeps linearly from 0 to +10 Volts in 50 ms, then resets to 0 Volts. 3. Change the sweep time to 10 seconds and check that the sweep ramp (U320 pin 6) sweeps linearly from 0 to +10 Volts in 10 seconds, then resets to 0 Volts.
Page 571: Figure 10-11 . Simplified Synthesizer Section
Synthesizer Section Sweep Generator Circuit (for Spectrum Analyzers with 2000 s max. Sweep Time) Figure 10-11 Simpliﬁed Synthesizer Section Chapter 10...
Page 572: Figure 10-12 . Simplified A14 Assembly Block Diagram
Synthesizer Section Sweep Generator Circuit (for Spectrum Analyzers with 2000 s max. Sweep Time) Figure 10-12 Simpliﬁed A14 Assembly Block Diagram Chapter 10...
Page 573: Figure 10-13 . Simplified A15 Assembly Block Diagram (100 Mhz Pll)
Synthesizer Section Sweep Generator Circuit (for Spectrum Analyzers with 2000 s max. Sweep Time) Figure 10-13 Simpliﬁed A15 Assembly Block Diagram (100 MHz PLL) Chapter 10...
Page 574: Figure 10-13A . Simplified A15 Assembly Block Diagram (600 Mhz Pll)
Synthesizer Section Sweep Generator Circuit (for Spectrum Analyzers with 2000 s max. Sweep Time) Figure 10-13a Simpliﬁed A15 Assembly Block Diagram (600 MHz PLL) Chapter 10...
Page 575: A21 Ocxo
Synthesizer Section A21 OCXO A21 OCXO The spectrum analyzer uses an oven-controlled crystal oscillator (OCXO). It is deleted in Option 103 and replaced by a temperature-compensated crystal oscillator (TCXO), located on the A15 RF assembly. Connectors J305 and J306 on the A15 RF assembly are located where the TCXO would be installed in an Option 103.
Page 576: Figure 10-14 Frequency Control Block Diagram
Synthesizer Section A21 OCXO Figure 10-14 Frequency Control Block Diagram Replace with sj19c Chapter 10...
Page 577 Synthesizer Section A21 OCXO Chapter 10...
Page 578: Figure 10-15 Rf Block Diagram (For A15 08563-60054, 08563-60055, Or 08563-60056)
Synthesizer Section A21 OCXO Figure 10-15 RF Block Diagram (for A15 08563-60054, 08563-60055, or 08563-60056) Replace with sj110c Chapter 10...
Page 579 Synthesizer Section A21 OCXO Chapter 10...
Page 580: Figure 10-16 . Rf Block Diagram (For A15 <08563-60054, 08563-60055, Or 08563-60056)
Synthesizer Section A21 OCXO Figure 10-16 RF Block Diagram (for A15 <08563-60054, 08563-60055, or 08563-60056) Replace with sj141c Chapter 10...
Page 581 Synthesizer Section A21 OCXO Chapter 10...
Page 582 RF Section...
Page 583 RF Section Introduction Introduction The RF section converts the input signal to a 10.7 MHz IF (Intermediate Frequency). See Figure 11-5 on page 615 for a detailed block diagram. The block diagrams for the A14 and A15 assemblies are located in NOTE Chapter 10, "Synthesizer Section."...
Page 584 RF Section Introduction Use of an active probe, such as an HP 85024A, with another spectrum CAUTION analyzer is recommended for troubleshooting the RF circuitry. If an HP 1120A Active Probe is being used with a spectrum analyzer, such as the...
Page 585: Figure 11-1 A14 And A15 Test Connectors
RF Section Troubleshooting Using the TAM Troubleshooting Using the TAM When using Automatic Fault Isolation, the TAM indicates suspected circuits that need to be manually checked. Use Table 11-1 on page 584 to locate the manual procedure. Table 11-2 on page 585 lists assembly test connectors associated with each Manual Probe Troubleshooting test.
Page 586: Table 11-2 Tam Tests Versus Test Connectors
RF Section Troubleshooting Using the TAM Table 11-1 Automatic Fault Isolation References Suspected Circuit Indicated by Manual Procedure to Perform Automatic Fault Isolation Check A7 1st LO Distribution Ampliﬁer A7 LODA (LO Distribution Ampliﬁer) Check A8 Low Band Mixer A8 Low Band Mixer Check A9 Input Attenuator A9 Input Attenuator Check A13 Second Converter...
Page 587 RF Section Troubleshooting Using the TAM Table 11-2 TAM Tests versus Test Connectors A14J19 Second Conv Drain Bias Second Conv Doubler Bias Second Conv Driver Bias First Mixer Drive Switch First Mixer Drive DAC A14J302 Revision A15J400 IF AMP/Limiter Bias A15J502 Third LO Tune Voltage 3rd LO Driver Amp...
Page 588: Low Band Problems (30 Hz To 2.9 Ghz)
Low Band Problems (30 Hz to 2.9 GHz) Low Band Problems (30 Hz to 2.9 GHz) 1. Disconnect all inputs from the front panel INPUT 50 Ω connector. 2. Set the HP 8560E/EC to the following settings: Center frequency ............0 Hz Span ................1 MHz Input attenuation ............0 dB...
Page 589: Low Band Problems
"Third Converter" in this chapter. 3. Perform the "First LO Output Amplitude" performance test. (Refer to the HP 8560 E-Series Spectrum Analyzer Calibration Guide or use the TAM functional test.) 4. If the performance test fails, perform the "First LO Distribution Ampliﬁer Adjustment"...
Page 590: A7 Loda (Lo Distribution Amplifier)
RF Section A7 LODA (LO Distribution Ampliﬁer) A7 LODA (LO Distribution Ampliﬁer) YTO unlock errors may occur if the power delivered to the A15A2 NOTE Sampler is less than −9.5 dBm. Frequency response will be degraded in both internal and external mixing modes if the output power is low or unleveled.
Page 591 RF Section A7 LODA (LO Distribution Ampliﬁer) 12.If the voltage varies between 0 Vdc and −2 Vdc, adjust the GATE BIAS for a DVM reading within ±10 mV of the GATE BIAS voltage listed on A7 LODA label. If the voltage does not vary between 0 Vdc and −2 Vdc, troubleshoot the A14 frequency control assembly.
Page 592: A8 Low Band Mixer
RF Section A8 Low Band Mixer A8 Low Band Mixer 1. Connect the HP 8560E/EC CAL OUTPUT to INPUT 50 Ω. 2. Set the HP 8560E/EC as follows: Center frequency ........... 300 MHz Span ................0 Hz Input attenuation ............10 dB 3.
Page 593: A9 Input Attenuator
RF Section A9 Input Attenuator A9 Input Attenuator 1. Perform the "Input Attenuator Accuracy" test in the HP 8560 E-Series Spectrum Analyzer Calibration Guide. 2. If there is a step-to-step error of approximately 10 dB or more, continue with step 3.
Page 594: Table 11-3 Attenuator Pin Values
RF Section A9 Input Attenuator Table 11-3 Attenuator Pin Values A14U420 Pin Number ATTEN Setting (dB) 20 dB 20 dB DC 40dB 40dB 10 dB 10 dB high high high high high high high high high high high high high high high high...
Page 595: A13 Second Converter
CAUTION (ESD). For further information regarding electrostatic cautions, refer to "Electrostatic Discharge Information" in Chapter 1. 1. Connect the HP 8560E/EC CAL OUTPUT to the INPUT 50 Ω connector. 2. Set the HP 8560E/EC to the following settings: Center frequency ............300 MHz Span ..................0 Hz...
Page 596 Press to turn spectrum analyzer off, reconnect W13 to LINE A14J12, and press to turn spectrum analyzer on. Set the HP LINE 8560E/EC to the following settings: Center frequency ..........300 MHz Span ................0 Hz 13.Move the positive lead of the DVM to A14J19 pin 1. The voltage should measure between −150 m Vdc and −800 mVdc.
Page 597: A14 Frequency Control Assembly
A7 LODA Drive Refer to function block Z on the A14 Frequency Control schematic in HP 8560 E-Series Spectrum Analyzer Component Level Informatio 1. Set the HP 8560E/EC to the following settings: Center frequency ............300 MHz Span ................2 MHz 2.
Page 598: Figure 11-2 A7 Loda Drive
RF Section A14 Frequency Control Assembly Figure 11-2 A7 LODA Drive Chapter 11...
Page 599: A15 Rf Assembly
9. Disconnect the signal generator and reconnect W35 (coax 92) to A15J801. Conﬁrming a Third Converter Output 1. Connect the HP 8560E/EC CAL OUTPUT to the INPUT 50 Ω connector. 2. Set the HP 8560E/EC to the following settings: Center frequency ............300 MHz Span ..................0 Hz...
Page 600: Third Converter
Refer to function blocks A, B, C, D, and E on A15 RF Section schematic in the HP 8560 E-Series Spectrum Analyzer Component Level Informatio The 3rd converter consists of the 2nd IF distribution, 2nd IF ampliﬁer, double balanced mixer, 10.7 MHz bandpass ﬁlter, and ﬂatness compensation ampliﬁer.
Page 601: Flatness Compensation Control
10.7 MHz IF signal level. The signal should measure greater than −10 dBm. If the signal level is incorrect, continue with step 13. 11.Enter 4095 into the HP 8560E/EC Flatness Data. The signal level at A15J601 should measure less than −36 dBm. This sets the gain of ﬂatness compensation ampliﬁers to a minimum.
Page 602: Control Latches
1. Connect positive lead of a DVM to A15J901 pin 15 (HEXTMIX). Connect the negative lead to A15J901 pin 6. The measured signal controls the switching between internal and external IF signals. 2. On the HP 8560E/EC, press . The AUX CTRL...
Page 603: Sig Id Oscillator (Option 008)
Spectrum Analyzer Component Level Informatio The SIG ID oscillator provides a shifted third LO (approximately 298 MHz) to distinguish true signals from false signals (such as image or multiple responses). When the HP 8560E/EC is set to , the SIG ID ON SIG ID oscillator turns on during alternate sweeps (Option 008 spectrum analyzers only).
Page 604: 10 Mhz Reference
5. If there is no problem with INTernal 10 MHz reference operation, check EXTernal 10 MHz reference operation as follows: 6. Set the HP 8560E/EC 's 10 MHz reference to external by pressing MHz EXT 7. Connect a 10 MHz, −2 dBm, signal to the rear panel 10 MHz REF IN/OUT connector.
Page 605: Figure 11-3 10 Mhz Reference At A15J302
Check U305 pin 3 for approximately +12 Vdc (Option 103 only). c. Check for a 10 MHz sine wave greater than or equal to 1 V p-p at J305 (standard HP 8563E), or at U302 pin 3 with an oscilloscope (Option 103).
Page 606: Figure 11-4 . 10 Mhz Ttl Reference At U304 Pin 13
RF Section A15 RF Assembly Figure 11-4 10 MHz TTL Reference at U304 Pin 13 Table 11-4 on page 606 lists the RF Section mnemonics shown in Figure 11-5 on page 615 and provides a brief description of each. Chapter 11...
Page 607: Table 11-4 Rf Section Mnemonic Table
RF Section A15 RF Assembly Table 11-4 RF Section Mnemonic Table Mnemonic Description MAIN COIL+, MAIN YTO main coil tune signal COIL− FM+, FM− YTO FM coil tune signal LO SENSE LO amplitude sense voltage LEVEL ADJUST LO amplitude adjustment voltage (PIN ATTEN) GATE BIAS LODA gate bias voltage HEXTMIXB...
Page 608: A10 Tracking Generator (Option 002)
RF Section A10 Tracking Generator (Option 002) A10 Tracking Generator (Option 002) Block Diagram Description The A10 tracking generator consists of several smaller circuits. The A10 is not component-level repairable; a rebuilt exchange assembly is available. The block diagram of the tracking generator is unique in that it only recreates one intermediate frequency of the spectrum analyzer.
Page 609: Output Goes Unleveled (Err 900 Or Err 901)
In any case, the output should remain leveled for output power settings of less than the maximum leveled output power. Refer to the speciﬁcations chapter in the HP 8560 E-Series Spectrum Analyzer Calibration Guide for more information on this speciﬁcation.
Page 610 RF Section A10 Tracking Generator (Option 002) messages.) If the start frequency is changed to be greater than 300 kHz and the output is still unleveled, ERR 900 TG UNLVL will be displayed (see above). The ALC MON line is monitored only at the end of a sweep. For this reason, it is possible that the output could be unleveled during a portion of a sweep, and, if the output returns to a leveled condition by the end of the sweep, ERR 900 TG UNLVL will not be displayed.
Page 611: Excessive Residual Fm
FM. The residual FM should be measured on another spectrum analyzer, such as an HP 8566A/B or HP 8568A/B, using slope detection with the HP 8560E/EC set to zero span. Proceed as follows to troubleshoot residual FM problems: 1.
Page 612: Vernier Accuracy Out-Of-Tolerance
Set the test analyzer to sweep from 300 kHz to 2.9 GHz, with a sweep time of 100 msec or less. Set the HP 8560E/EC to sweep from 300 kHz to 2.9 GHz with a 50 second sweep time. Press...
Page 613: Harmonic/Spurious Outputs Too High
1st LO and the 600 MHz drive signals using another spectrum analyzer. When checking the 1st LO, the HP 8560E/EC must be set to zero span. Press to determine the 1st LO MORE 1 OF 2...
Page 614: Power Sweep Not Functioning Properly
BLKG/GATE OUTPUT (rear panel) of the HP 8560E/EC. Set the power sweep range to 12.8 dB and tracking generator RF POWER to −10 dBm. Set the HP 8560E/EC SWEEPTIME to 50 ms. A 0 to +10 V ramp should be observed on the oscilloscope. The amplitude of the ramp should decrease approximately 780 mV for each 1 dB decrease in power sweep range.
Page 615 W43 nearest A10. 6. Check the tracking adjustment controls. Monitor A14J16 pin 13 with a DVM. On the HP 8560E/EC, use the step keys and numeric keypad to set the COARSE TRACK ADJ value from 0 to 255. The voltage measured should increase from 0 V to +10V.
Page 616: Figure 11-5 . Hp 8560E Rf Section Troubleshooting Block Diagram
RF Section A10 Tracking Generator (Option 002) Figure 11-5 HP 8560E RF Section Troubleshooting Block Diagram Replace with sj111c Chapter 11...
Page 617 RF Section A10 Tracking Generator (Option 002) Chapter 11...
Page 618 Display/Power Supply Section...
Page 619 Introduction Introduction The Display/Power Supply chapter consists of the following sections: A17 LCD Display (8560EC) ........... page 619 A17 CRT Display (8560E)..........page 624 A6 Power Supply ............page 638 The A6 power supply in 8560 E-series and 8560 EC-series...
Page 620 Display/Power Supply Section LCD Display (8560EC) LCD Display (8560EC) The display section of 8560EC instruments contain the A17 display driver, the A17A1 inverter board, the A18 LCD (liquid crystal display), and the A6 power supply. The A6 power supply is explained in the power supply section which begins on page 590.
Page 621: Figure 12-1 . Simplified Section Block Diagram
Display/Power Supply Section LCD Display (8560EC) Figure 12-1 Simpliﬁed Section Block Diagram Overview of A17 Display Driver Board The A17 display driver board monitors the 8560 EC-series controller board, copies display instructions to local memory, creates a bitmap from the data, and generates the signals needed to drive the LCD display and a VGA monitor.
Page 622: Figure 12-2 Probe Power Socket
Display/Power Supply Section Troubleshooting the LCD Display Troubleshooting the LCD Display There are no adjustments for intensity or contrast of the LCD. NOTE Blank Display 1. If the LED above the front-panel LINE switch is lit, most of the A6 power supply is functioning properly.
Page 623 Display/Power Supply Section Troubleshooting the LCD Display Dim Display 1. If the display is dim, suspect the backlights, which are inserted into the LCD assembly from the backlight assembly. Always replace both backlights at the same time. For the backlight replacement procedure, see page 158 Troubleshooting using the VGA port...
Page 624: Figure 12-3 Location Of +5V Supply Pins On J1 Of A17 And J8 Of A2
Display/Power Supply Section Troubleshooting the LCD Display Figure 12-3 Location of +5V supply pins on J1 of A17 and J8 of A2 Figure 12-3 shows A2J8 connections on 8560 EC-series Instruments. Lines 2 −5 and 42 − 44 supply +5V to the two LCD backlights.
Page 625 Display/Power Supply Section CRT Display (8560E) CRT Display (8560E) The CRT display section contains the A6 power supply, A6A1 HV module, A17 CRT driver, and A18 CRT. The A6 power supply and A6A1 HV module are explained in the section on the power supply which begins on page 590.
Page 626: Figure 12-4 Power Supply And Crt Block Diagram
Display/Power Supply Section CRT Display (8560E) Figure 12-4 Power Supply and CRT Block Diagram Chapter 12...
Page 627: Table 12-1 Automatic Fault Isolation References
Display/Power Supply Section Troubleshooting Using the TAM Troubleshooting Using the TAM When using automatic fault isolation, the TAM indicates suspected circuits that need to be manually checked. Use Table 12-1 on page 626 to locate the manual procedure. Table 12-5 on page 627 lists assembly test connectors associated with each manual probe troubleshooting test.
Page 628: Figure 12-5 A17 Test Connector
Display/Power Supply Section Troubleshooting Using the TAM Figure 12-5 A17 Test Connector Table 12-2 TAM Tests versus Test Connectors Connector Manual Probe Troubleshooting Test Measured Signal Lines A17J4 Revision Constant current Source Intensity input Intensity offset Blanking control A2J201 10 V reference test Switch drive test Buffered X &Y DAC outputs MS2, MS7...
Page 629 Use the following procedure if the instrument display is blank. This procedure substitutes an HP-IB printer for the display. 1. Connect the printer to the HP 8560E spectrum analyzer and set the printer address to the value required by the TAM. This is usually 1.
Page 630 Display/Power Supply Section Blank Display Blank Display 1. If the LED above the front panel LINE switch is lit, most of the A6 power supply is functioning properly. 2. Carefully check the voltages on the front panel PROBE POWER jack. Be careful to avoid shorting the pins together. See Figure 12-6 on page 629.
Page 631 Display/Power Supply Section Blank Display 6. Press , 1, FREQUENCY 7. Allow the analyzer to warm up for at least 1 minute. 8. While observing the display, press to turn the spectrum LINE analyzer off. If a green ﬂash appears on the display, the CRT is probably working properly;...
Page 632 Display/Power Supply Section Blanking Signal Blanking Signal 1. Connect an oscilloscope probe to A2J202 pin 3. Connect the oscilloscope ground lead to TP3. Set the oscilloscope to the following settings: Sweep time ..............2 ms/div Vertical scale 1 V/div 2. If a 4 Vp-p signal is not observed, the A2 controller assembly is faulty.
Page 633 Display Distortion Display Distortion The HP 8560E uses a vector display. The graticule lines, traces, and characters are composed of a series of straight lines ("vectors") placed end-to-end. If the vectors do not begin and end at the proper points, the display appears distorted, but in focus.
Page 634 Display/Power Supply Section Display Distortion 10.The appropriate GAIN adjustment (A17R55 or A17R75) should change the ac component in both outputs by the same amount. 11.If the display is a single dot, check the base of A17Q18 for −10.3 V ±0.3 V. Verify the signals at TP11, TP14, TP12, and TP13. 12.If signals are correct and cables to the CRT are good, suspect the CRT.
Page 635 6. Turn off the analyzer and place A17 in the service position. Connect the ground lead of a high-voltage probe (HP 34111A) to the chassis, and use it with a DVM to measure A17J7(10). 7. The nominal A17J7(10) voltage is −1600 Vdc, but the CRT will function if this voltage is within 200 V of −1600 Vdc.
Page 636 Display/Power Supply Section Focus Problems 12.Press , and . While turning the front DISPLAY MORE 1 OF 2 FOCUS panel knob, verify the dc level of the signal at TP9 adjusts about 30 Vp-p. 13.Verify that the front panel intensity adjustment, when used with the A17R21 Z FOCUS, changes the peak-to-peak voltage at TP9 by 25 V.
Page 637 The following measurements should be made with a high-voltage probe, NOTE such as the HP 34111A. When using the high-voltage probe, connect the ground lead securely to the HP 8560E chassis. Chapter 12...
Page 638 60 V range to account for tube variations, and achieve proper intensity. 8. If the grid and cathode voltages are correct, turn off the HP 8560E spectrum analyzer and check A17CR10 with an ohmmeter. If A17CR10 is good, suspect the A18V1 CRT.
Page 639 Display/Power Supply Section Power Supply Power Supply The power supply section contains the A6 power supply and, in 8560E instruments, the A6A1 HV module. Figure 12-7 on page 639 illustrates the power supply block diagram. Table 12-3 on page 640 lists signal versus pin numbers for power cable W1.
Page 640: Figure 12-7 . Simplified Power Supply Block Diagram
Power Supply Figure 12-7 Simpliﬁed Power Supply Block Diagram The block diagram in Figure 12-7 shows the power supply in an 8560E NOTE instrument. The power supply in 8560EC instruments is identical except that the CRT and high voltage supplies in an 8560EC are inactive, and are not connected to CRT circuitry.
Page 641: Table 12-3 W1 Power-Cable Connections
Display/Power Supply Section Power Supply Table 12-3 W1 Power-Cable Connections Signal A2J1 A3J1 A4J1 A5J1 A6J1- A14J1 A15J1 (pins) (pins) (pins) (pins) (pins) (pins) (pins) A GND A GND A GND SCAN RAMP 41 A GND −12.6 V −15 V A GND −15 V +15 V...
Page 642: Table 12-4 Automatic Fault Isolation References
+15 V −15 V −15 V * Indicates signal source. Troubleshooting Using the TAM (8560E only) When using automatic fault isolation, the TAM indicates suspected circuits that need to be manually checked. Use Table 12-4 on page 641 to locate the manual procedure.
Page 643: A6 Power Supply Assembly
HP 8560E and 8560EC spectrum analyzers uses a switching power supply operating at 40 kHz to supply the low voltages for most of the analyzer hardware. In the 8560E, the power supply also provides a 30 kHz switching supply (CRT supply) for the high voltages used by the CRT display used in E-series instruments.
Page 644: Figure 12-8 Buck Regulator Waveform
Display/Power Supply Section A6 Power Supply Assembly the cathode of A6CR201 (TP206) and the ground to A6TP201. 15.Set the current limit of the power supply to about 500 mA and the voltage to 12 Vdc. 16.Make sure a jumper is connected from A6TP101 to A6TP301. This independently powers the buck regulator control circuitry.
Page 645: Line Fuse Blowing
LINE either the input ﬁlter or the power switch cable assembly. 2. If the line fuse blows when the HP 8560E/EC spectrum analyzer is turned on, disconnect the power cord and lift the drain of A6Q102 from TP108. If the line fuse still blows, suspect CR102 through CR105.
Page 646: High Voltage Supplies (8560E Only)
U306A should be near +13 Vdc. 12.Check output of U302; its output should be high if the feedback circuit is working properly. High Voltage Supplies (8560E) 1. Press to turn spectrum analyzer off, disconnect the power cord, LINE and remove the power supply shield.
Page 647: Crt Supply Dropping Out (8560E Only)
A6A1 HV module is faulty. If the TP403 waveform has pulses similar to those on TP402, the A6 power supply is probably faulty. CRT Supply Dropping Out (8560E) See function block K of A6 power supply schematic diagram in the component-level information binder.
Page 648: Blanking Signal (8560E Only)
Display/Power Supply Section A6 Power Supply Assembly Blanking Signal (8560E) 1. Connect an oscilloscope probe to A2J202 pin 3. Connect the oscilloscope ground lead to TP3. Set the oscilloscope to the following settings: Sweep time ..............2 ms/div Vertical scale ..............1 V/div 2.
Page 649: Dc-Dc Converter Control
Display/Power Supply Section A6 Power Supply Assembly at low line voltages at low temperatures. At low line voltages U202C will draw charge away from C206 through R205. This allows the buck regulator to turn on and draw current through the thermistors in the input rectiﬁer.
Page 650: Figure 12-9 A17 Crt Driver Block Diagram
Display/Power Supply Section A6 Power Supply Assembly Figure 12-9 A17 CRT Driver Block Diagram Replace with sj129c Chapter 12...
Page 651 Display/Power Supply Section A6 Power Supply Assembly Chapter 12...
Page 652: Figure 12-10 A6 Power Supply Block Diagram
Display/Power Supply Section A6 Power Supply Assembly Figure 12-10 A6 Power Supply Block Diagram Replace with sj121c Chapter 12...
Page 653 Display/Power Supply Section A6 Power Supply Assembly Chapter 12...
Page 654 Component-Level Information Packets...
Page 655 Component-Level Information Packets Introduction Introduction Information for repairable assemblies is provided in Component-Level Information Packets (CLIPs). Each CLIP contains a parts list, component-location diagram, and schematic diagram. Each CLIP has a part number that is changed whenever the related instrument assembly is changed.
Page 656: Table 13-1 . Clips Available For Hp 8560E And 8560Ec Spectrum Analyzers
Component-Level Information Packets Introduction Table 13-1 CLIPs Available for HP 8560E and 8560EC Spectrum Analyzers Board Assembly Instrument Serial Assembly CLIP Part Preﬁx Part Number Number A1A1 Keyboard 3611A and above 08562-60140 08562-90188* (E-series) A1A1 Keyboard New Assembly 08563-60162 08563-90222*...
Page 657 Component-Level Information Packets Introduction Table 13-1 CLIPs Available for HP 8560E and 8560EC Spectrum Analyzers Board Assembly Instrument Serial Assembly CLIP Part Preﬁx Part Number Number A6 Power Supply 3213A through 3310A 08563-60020 08563-90059 3327A through 3350A 08563-60064 08563-90100 3406A through †...
Page 658 Component-Level Information Packets Introduction Table 13-1 CLIPs Available for HP 8560E and 8560EC Spectrum Analyzers Board Assembly Instrument Serial Assembly CLIP Part Preﬁx Part Number Number A15 RF Board 3305A through 3432A 08563-60044 08563-90071 (Standard) 3436A through 3450A 08563-60054 08563-90110...
Page 659: Figure 13-1 Hp 8560 Ec-Series Interconnect Block Diagram
Component-Level Information Packets Introduction Figure 13-1 HP 8560 EC-Series Interconnect Block Diagram Replace with sj15c Chapter 13...
Page 660 Component-Level Information Packets Introduction Chapter 13...
Page 661: Figure 13-2 Hp 8560 E-Series Interconnect Block Diagram
Component-Level Information Packets Introduction Figure 13-2 HP 8560 E-Series Interconnect Block Diagram Replace with e1abe083 Chapter 13...
Page 662 Index Numerics IF bandpass adjustment cover assembly parts sampling oscillator adjustment cover removal/replacement 1 MHz resolution bandwidth problems Signal ID oscillator adjustment driver 10 kHz and 3 kHz resolution removal bandwidth problems YTO adjustment 10.6925 MHz VCXO adjustment procedures general troubleshooting information CRT display...
Page 663 YTO loop error messages 317 to general information limiter phase adjustment ESD requirements limiter problems YTO loop settling error HP 8560E options information line generator messages 351 to 354 line switch (E), assembly HP sales and service ofﬁces packaging material part...
Page 664 Index low-pass ﬁlter troubleshooting preselector peaking Signal ID oscillator adjustment probe power socket programming errors span >20 MHz 2 MHz main chassis parts 2.02 MHz to 20 MHz main coil rack slide kit span accuracy problems manufacturers code list real time DAC span problems marker problems rear dress panel...
Page 665 Index amplitude error message 582 troubleshooting, CRT focus troubleshooting, CRT intensity automatic IF error messages 400 to 599 troubleshooting, dead power battery error message 718 supply cal unlock error message 499 troubleshooting, dim LCD troubleshooting, display digital and checksum errors 700 distortion to 799 troubleshooting, high voltage...

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HP 8560E Service Manual

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