Page 1 E4445A (3 Hz – 13.2 GHz) E4446A (3 Hz – 40 GHz) E4447A (3 Hz – 42.98 GHz) E4448A (3 Hz – 50 GHz) Manufacturing Part Number: E4440-90616 Supersedes: E4440-90590 Printed in USA June 2008 © Copyright 2002-2008 Agilent Technologies, Inc.
Page 2 The information contained in this document is subject to change without notice. Agilent Technologies 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. Agilent...
Page 3 The power cord is connected to internal capacitors that may WARNING remain live for 5 seconds after disconnecting the plug from it’s power supply. The detachable power cord is the instrument disconnecting WARNING device. It disconnects the mains circuits from the mains supply before other parts of the instrument.
Page 4 Agilent Technologies from another country. Agilent Technologies warrants that its software and firmware designated by Agilent Technologies for use with an instrument will execute its programming instructions when properly installed on that instrument. Agilent Technologies does not warrant that the operation of the instrument, or software, or firmware will be uninterrupted or error-free.
Page 5: Table Of Contents
Agilent PSA Series Spectrum Analyzer Overview ........
Page 6 Contents RF Section Description (E4446A, E4447A, E4448A) ........... .91 RF Assembly Quick Check - E4446A, E4447A, E4448A .
Page 7 Contents Pre-filters..............133 Main Gain Amplifier .
Page 8 (all PSA Series) ........
Page 9 Contents Removal ..............315 Replacement .
Page 10 Contents Removal ..............361 Replacement .
Page 11 Contents Burst Trigger Check ............419 Internal Front Panel Test .
Page 12 Contents...
Page 13: Overview
Overview...
Page 14: What You Will Find In This Chapter
The following sections are found in this chapter: • PSA Overview................page 15 • Hardware Option Descriptions ..........page 15 • Before Troubleshooting a Failure..........page 19 • Service Equipment You Will Need ..........page 22 • Contacting Agilent Technologies ..........page 37 Chapter 1...
Page 15: Agilent Psa Series Spectrum Analyzer Overview
The Agilent PSA Series spectrum analyzers are readily adaptable to meet changing measurement needs. Optional features enable the analyzer to be configured as a comprehensive analytical tool for communications systems and components.
Page 16: Instrument Hardware Option Descriptions
“digital demod hardware” since the attenuator is required for the optional digital communications applications. Option 1DS (All PSA Series) Adds a 100 kHz to 3.05 GHz Preamp to the lowband path. Option 107 (All PSA Series) Audio Input (for use with Option 223, Measuring Receiver Personality only).
Page 17 USB and extended memory circuitry although a license keyword is required for each option. Option 115 (All PSA Series) Extended Memory. Provides 512 MB of additional memory for optional measurement personality or user files such as state or trace files. Requires USB/Memory board assembly.
Page 18 Overview Instrument Hardware Option Descriptions Option 124 (All PSA Series) Adds a 0 to 1 V Video output on the rear panel. This video out has run through the normal IF paths and is envelope detected after it has been conditioned by the resolution bandwidth, video bandwidth reference level and scale settings.
Page 19: Before Troubleshooting A Failure
Overview Before Troubleshooting a Failure Before Troubleshooting a Failure Before troubleshooting, complete the following three tasks: 1. Familiarize yourself with the safety symbols marked on the instrument and read the safety information provided on page 2 this guide. 2. Read the ESD Information below. 3.
Page 20 Overview Before Troubleshooting a Failure Figure 1-1 Example of a Static-Safe Workstation Table 1-1 Static Safe Accessories Agilent Part Description Number Set includes: 3M static control mat 0.6 m × 1.2 m 9300-0797 (2 ft. × 4 ft.) and 4.6 cm (15 ft.) ground wire. (The wrist-strap and wrist-strap cord are not included.
Page 21 Overview Before Troubleshooting a Failure Handling Electronic Components and ESD The possibility of unseen damage caused by ESD is present whenever components are transported, stored, or used. The risk of ESD damage can be greatly reduced by close attention to how all components are handled.
Page 22: Service Equipment You Will Need
Overview Service Equipment You Will Need Service Equipment You Will Need The service kit facilitates making measurements on various assemblies within the instrument. Refer to Table 1-3 for a list of recommended Agilent test equipment used for making measurements. Alternative equipment model numbers are given in case the recommended equipment is not available.
Page 23 Overview Service Equipment You Will Need Table 1-2 Agilent Service Kit (Agilent part number E4440-60090) Agilent Part Agilent Part Number Specifications 10-Conductor Ribbon Cable (3 ea.) E4440-60071 To extend front end driver board (Atten A, Atten B, YTO). 26-Conductor Ribbon Cable E4440-60072 To extend front end driver board (Lowband).
Page 24: Required Test Equipment List
Some tests can use various models of a particular equipment type. The “Recommended Agilent Model” is the preferred equipment. However, the “Alternative Agilent Model” is an acceptable substitute. Table 1-3 Required Test Equipment for PSA Series Instrument Critical Specifications Recommended Alternative...
Page 25 Overview Service Equipment You Will Need Table 1-3 Required Test Equipment for PSA Series (Continued) Instrument Critical Specifications Recommended Alternative Agilent Model Agilent Model Number Number Microwave Source 1 Frequency: 10 MHz to 50 GHz 83650A/B A, P, T E8257D...
Page 26 Overview Service Equipment You Will Need Table 1-3 Required Test Equipment for PSA Series (Continued) Instrument Critical Specifications Recommended Alternative Agilent Model Agilent Model Number Number RF Power Sensor Frequency Range: 100 kHz to 3 GHz 8482A 8482A STD A, P Amplitude Range: −30 to +20 dBm...
Page 27 Overview Service Equipment You Will Need Table 1-3 Required Test Equipment for PSA Series (Continued) Instrument Critical Specifications Recommended Alternative Agilent Model Agilent Model Number Number High Sensitivity Microwave Frequency Range: 50 MHz to 26.5 GHz 8485D 8487D A, P...
Page 28 Overview Service Equipment You Will Need Table 1-3 Required Test Equipment for PSA Series (Continued) Instrument Critical Specifications Recommended Alternative Agilent Model Agilent Model Number Number Attenuator Driver Compatible with the 8496G and 8494G step 11713B 11713A attenuators. 3 dB...
Page 29 Overview Service Equipment You Will Need Table 1-3 Required Test Equipment for PSA Series (Continued) Instrument Critical Specifications Recommended Alternative Agilent Model Agilent Model Number Number Millimeter Power Splitter Frequency: 10 MHz to 50 GHz 11667C VSWR: ≤ 10 MHz to 18 GHz: < 1.29:1 (for E4446A, 47A, 48A) 18 GHz to 26.5 GHz: <...
Page 30 Overview Service Equipment You Will Need Table 1-3 Required Test Equipment for PSA Series (Continued) Instrument Critical Specifications Recommended Alternative Agilent Model Agilent Model Number Number Frequency: DC to 10 MHz 10503A A, P, T 50 Ω Coax BNC (m), both ends (3 required) 120 cm (48 in.)
Page 31 Overview Service Equipment You Will Need Table 1-3 Required Test Equipment for PSA Series (Continued) Instrument Critical Specifications Recommended Alternative Agilent Model Agilent Model Number Number 3.5 mm (f) to 3.5 mm (f) Frequency: DC to 26.5 GHz 83059B 1250-1749 VSWR: ≤...
Page 32 Overview Service Equipment You Will Need b. Note: One PSG with Option 567, 1EA, 1E1, 007, and UNX or UNR can be used as the Microwave Source #1, RF Source #2, and RF Source #3. (Option 007, Analog Ramp Sweep, required for Frequency Response Adjustments) c.
Page 33 Overview Service Equipment You Will Need 1 dB Step Attenuator Nominal Attenuator Section Maximum Attenuation Uncertainty (dB) (dB) (1 dB) (2 dB) (4 dB) (4 dB) 0 (Reference) < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 <...
Page 34: Replacement Assemblies
Overview Replacement Assemblies Replacement Assemblies The instrument assemblies are not repairable to the component level. Refer to Chapter 11 to determine how to disassemble and assemble the instrument. The following assemblies must be replaced as an assembly. • A1 flat panel display •...
Page 35 Overview Replacement Assemblies • A27 Electronic Attenuator (option B7J) • A29 SBTX/FELOMA Driver Board (43 to 50 GHz models) • A30 FIFA (43 to 50 GHz models) • A31 Wideband Analog IF assembly (Option 122 or 140) • A32 Wideband Digital IF assembly (Option 122 or 140) •...
Page 36: Battery Information
After an Instrument Repair If any instrument assemblies have been repaired or replaced, perform the related adjustments and performance verification tests. The adjustments and tests are done using the PSA Series Performance Verification and Adjustment Software. Refer to Chapter 12...
Page 37: Contacting Agilent Technologies
45. This section contains a checklist that will help identify some of the most common problems. If further troubleshooting is necessary, continue with the troubleshooting steps earlier in this chapter, or return the instrument to Agilent Technologies. There is also support on the world-wide web. The address is: http://www.agilent.com/find/psa/ FAQs, firmware upgrades, documentation, and other support information can be accessed from this site.
Page 38 Overview Contacting Agilent Technologies Table 1-4 Contacting Agilent Online assistance: www.agilent.com/find/assist United States Japan New Zealand Europe (tel) 1 800 829 4444 (tel) (+81) 426 56 7832 (tel) 0 800 738 378 (tel) (+31) 20 547 2323 (fax) (+81) 426 56 7840...
Page 39: Instrument Serial Numbers
Overview Contacting Agilent Technologies Instrument Serial Numbers Agilent makes frequent improvements to its products enhancing performance, usability, or reliability. Agilent service personnel have access to complete records of design changes to each type of instrument, based on the instrument’s serial number and option designation.
Page 40: How To Return Your Instrument For Service
Overview Contacting Agilent Technologies How to Return Your Instrument for Service Service Tag If you are returning the instrument to Agilent for servicing, fill in and attach a blue service tag. Several service tags are supplied in this manual. Please be as specific as possible about the nature of the problem.
Page 41 Overview Contacting Agilent Technologies Other Packaging Instrument damage can result from using packaging materials other CAUTION than those specified. Never use styrene pellets in any shape as packaging materials. They do not adequately cushion the equipment or prevent it from shifting in the carton. They cause equipment damage by generating static electricity and by lodging in the instrument louvers, blocking airflow.
Page 42 Overview Contacting Agilent Technologies Chapter 1...
Page 43 Overall Troubleshooting...
Page 44: Overall Troubleshooting What You Will Find In This Chapter
Overall Troubleshooting What You Will Find in This Chapter What You Will Find in This Chapter This chapter provides information that is useful when starting to troubleshoot a spectrum analyzer. It includes procedures for troubleshooting common failures and provides information on isolating problems in the analyzer.
Page 45: Check The Basics
Overall Troubleshooting Check the Basics Check the Basics Before calling Agilent Technologies or returning the instrument for service, please make the following checks: 1. Is there power at the power outlet? At the power receptacle on the instrument? 2. Is the instrument turned on? Check to see if the front panel LED is green, which indicates the power supply is on.
Page 46: Troubleshooting Power-Up Problems
Overall Troubleshooting Troubleshooting Power-up Problems Troubleshooting Power-up Problems If the instrument shows any of the following symptoms, immediately CAUTION unplug the instrument from the ac power line: • Smoke or unusual noise from inside the unit. • A circuit breaker or fuse on the main ac power line opens. These potentially serious faults must be corrected before proceeding.
Page 47: Troubleshooting An Inoperative Instrument
Overall Troubleshooting Troubleshooting an Inoperative Instrument Troubleshooting an Inoperative Instrument When the instrument appears to be dead (no display and no fans), there is often little evidence that points directly to the cause. This section provides steps and solutions to typical failure modes relating to an inoperative instrument.
Page 48 Overall Troubleshooting Troubleshooting an Inoperative Instrument 4. Instrument appears to abort the boot process or experiences a failure during the self-diagnostic tests: a. Check for error messages. Monitor the CPU diagnostic LED’s visible on the CPU rear panel. The LED’s should go through the following sequence: —...
Page 49: Troubleshooting Using Auto-Align Tests
Overall Troubleshooting Troubleshooting Using Auto-Align Tests Troubleshooting Using Auto-Align Tests A sequence of alignments occur automatically when the analyzer is powered on. A “pop-up” box will appear on the display indicating which alignment is being performed. In the table below, you will find a description of each auto-alignment.
Page 50 Overall Troubleshooting Troubleshooting Using Auto-Align Tests Table 2-2 Sequence for Auto-Align Procedures Procedure Name Procedure Description IF Gain Curve The A8 Analog IF assembly has a gain control DAC that is called the “Main Gain”. It is used to compensate for analog IF Prefilter BW gain variations, so that the gain of the entire IF path (before ADC) remains approximately constant.
Page 51 Overall Troubleshooting Troubleshooting Using Auto-Align Tests Table 2-2 Sequence for Auto-Align Procedures Procedure Name Procedure Description Align RF Gain This alignment derives values for the RF Gain DAC to be used at a center frequency tuning of 50 MHz, for various system signal path setups. The RF Gain DAC in general is adjusted relative to these reference DAC values during sweeps to perform RF flatness compensation;...
Page 52: Quick Cals
Overall Troubleshooting Quick Cals Table 2-2 Sequence for Auto-Align Procedures Procedure Name Procedure Description Wide IF Frequency This alignment uses the internal comb generator to perform the frequency response Response measurement. Step gains and filter paths are taken into account. The factory comb (Options 122 or 140) corrections are used for this alignment.
Page 53: Isolating The Faulty Assembly When The Displayed Amplitude Is Incorrect Or The Instrument Fails A Gain Related Auto Align Test
Isolating the faulty assembly when the displayed amplitude is incorrect or the instrument fails a gain related Auto Align test The PSA series analyzers contain two internal calibrators. Please refer to the instrument overall block diagram under the block diagram tab in this service guide.
Page 54 Overall Troubleshooting Isolating the faulty assembly when the displayed amplitude is incorrect or the instrument fails a gain related Auto Align test run using an external source rather than the internal 50 MHz calibrator. Press to perform the Auto Align System Alignments Align All Now...
Page 55 Overall Troubleshooting Isolating the faulty assembly when the displayed amplitude is incorrect or the instrument fails a gain related Auto Align test If the signal level is correct: The signal path from the A10 3 Converter 2 IF Amp to the output of the A7 Digital IF is good.
Page 56 Overall Troubleshooting Isolating the faulty assembly when the displayed amplitude is incorrect or the instrument fails a gain related Auto Align test Instruments without Basic Mode (Option B7J or Option 122 or 140) a. Press the green key. Preset b. Press Mode Spectrum Analysis c.
Page 57: Troubleshooting Using Front Panel Keys
Overall Troubleshooting Troubleshooting Using Front Panel Keys Troubleshooting Using Front Panel Keys Using front-panel keys, you can perform limited troubleshooting to the instrument without opening up the analyzer. The following key-driven features under the key will help you diagnose the instrument: System key accesses error message information.
Page 58: Using Service Features
Overall Troubleshooting Troubleshooting Using Front Panel Keys Using Service Features When the key is pressed, a password prompt will appear. Enter NOTE Service -49, to access the Service Mode. Enter Press again to access the following keys: Service Flatness Bandlock 50 MHz Osc LO Null Noise Source...
Page 59 Overall Troubleshooting Troubleshooting Using Front Panel Keys 50 MHz Oscillator key performs the internal alignment routine using 50 MHz Oscillator a signal from the RF input (rather than the internal 50 MHz reference signal) when Ext is selected. Ext mode disables the internal 50 MHz reference oscillator and selects the RF input (when the Align All Now function is enabled.)
Page 60 Overall Troubleshooting Troubleshooting Using Front Panel Keys ADC Ctrl To view the dither signal, go to Basic mode, and set the span to 10 MHz. - Turns dither on and off. ADC Dither - Moves the dither center frequency in the IF. The ADC Dither CF default is 11.25 MHz relative to 7.5 MHz (center of the screen).
Page 61 Overall Troubleshooting Troubleshooting Using Front Panel Keys 1st LO State - Allows the center frequency to be changed. Center Freq - This key shows which of four possible LO modes the 1st LO Mode instrument is in. Note: the following description assumes the instrument is in auto coupled mode (phase noise optimization under the auto coupled menu is set to Auto).
Page 62: Using Alignment Features
Overall Troubleshooting Troubleshooting Using Front Panel Keys Using Alignment Features Press: System Alignments Alignment Keys Auto Align Align All Now Align Subsystem Align RF Align IF Align ADC Align Current IF Flatness Align Current SysGain Restore Align Defaults Auto Align can be set to one of three states listed below.
Page 63 Overall Troubleshooting Troubleshooting Using Front Panel Keys Align All Now key halts normal analyzer operation and forces a Align All Now complete realignment of the entire system. When performing any alignment, the presence of an external 50 MHz signal is checked. If an external 50 MHz signal > 0 dBm, is detected, the alignment routine will be skipped and the message “High 50 MHz power level”...
Page 64: Selecting The Frequency Reference
Overall Troubleshooting Troubleshooting Using Front Panel Keys Selecting the Frequency Reference Press: System Freq Ref key allows you to toggle the reference from internal to Freq Ref external (or external to internal), and then specify the external reference frequency, by entering a value between 1 and 30 MHz, followed by pressing the key.
Page 65: Troubleshooting Performance Test Failures
Overall Troubleshooting Troubleshooting Performance Test Failures Troubleshooting Performance Test Failures This information assumes the analyzer is making measurements but a performance test is failing by a small margin, or only a few measurements are failing. If most of the performance tests are failing, go to "Check the Basics"...
Page 66 Overall Troubleshooting Troubleshooting Performance Test Failures Table 2-4 Performance Test Failures Failing Adjustment Probable Troubleshooting Performance Test Faulty Assembly Information Spurious Responses None A19 RYTHM Chapter 5 FL1 (3 GHz LPF) Chapter 3 FL2 (3.9214 GHz BPF) Chapter 4 A20 Lowband Chapter 6 A10 3rd Converter A8 Analog IF...
Page 67 Overall Troubleshooting Troubleshooting Performance Test Failures Table 2-4 Performance Test Failures Failing Adjustment Probable Troubleshooting Performance Test Faulty Assembly Information Absolute Second LO Power A14/A15 Chapter 3 Amplitude Accuracy SLODA/FELOMA Input Attenuators 50 MHz Calibrator A20 Lowband Amplitude A10 3rd Converter A8 Analog IF A7 Digital IF A19 RYTHM...
Page 68 Overall Troubleshooting Troubleshooting Performance Test Failures Table 2-4 Performance Test Failures Failing Adjustment Probable Troubleshooting Performance Test Faulty Assembly Information Input Noise Density A31 Wideband Analog IF Chapter 8 (Wide IF) A10 3rd Converter But not failing the DANL test Chapter 2...
Page 69 Troubleshooting the RF Section (E4440A, E4443A, E4445A)
Page 70: Troubleshooting The Rf Section (E4440A, E4443A, E4445A) What You Will Find In This Chapter
Troubleshooting the RF Section (E4440A, E4443A, E4445A) What You Will Find in This Chapter What You Will Find in This Chapter The following information is found in this chapter: 1. Theory of operation of the RF section for model numbers E4440A, E4443A, and E4445A.
Page 71: Rf Section Description
Troubleshooting the RF Section (E4440A, E4443A, E4445A) RF Section Description (E4440A, E4443A, E4445A) RF Section Description (E4440A, E4443A, E4445A) Purpose The RF front end section converts input signals to a 3 IF of 21.4 MHz. This section contains assemblies which generate Local Oscillator (LO) signals and assemblies which use the LO signals to mix the RF Input and the subsequent IF signals.
Page 72 Troubleshooting the RF Section (E4440A, E4443A, E4445A) RF Section Description (E4440A, E4443A, E4445A) Figure 3-1 Example of Down Conversion In the Third Converter, one of three possible 321.4 MHz IF signals is selected: High Band, Low Band, and 321.4 MHz from an optional 321.4 MHz input.
Page 73 Troubleshooting the RF Section (E4440A, E4443A, E4445A) RF Section Description (E4440A, E4443A, E4445A) Figure 3-2 RF Section Assemblies - E4440A, E4443A, E4445A Item Description J1 Input Connector A14 Attenuator/Switch A15 Attenuator L-bracket, RF Main A18 YTO, 2.9 to 7 GHz (Yig Tuned Oscillator) A19 RYTHM A20 Low Band Assembly FL1 Low Pass Filter, 3 GHz...
Page 74 Troubleshooting the RF Section (E4440A, E4443A, E4445A) RF Section Description (E4440A, E4443A, E4445A) Figure 3-3 Block Diagram with RF Options - E4440A, E4443A, E4445A Option BAB (E4440A only) - APC 3.5 mm input connector. Standard PSAs use a precision machined Type N connector for the RF input. Option B7J - Digital Demod Hardware.
Page 75: Rf Assembly Quick Check - E4440A, E4443A, E4445A
Troubleshooting the RF Section (E4440A, E4443A, E4445A) RF Section Description (E4440A, E4443A, E4445A) RF Assembly Quick Check - E4440A, E4443A, E4445A To perform the following checks, it will be necessary to remove the outer NOTE case and the top brace. See Chapter 11 for removal procedures.
Page 76: A14 And A15 Step Attenuators
Troubleshooting the RF Section (E4440A, E4443A, E4445A) RF Section Description (E4440A, E4443A, E4445A) A14 and A15 Step Attenuators A faulty attenuator can cause improper signal level in both High and Low bands, often in certain combinations of attenuator settings. In addition, a faulty A14 can prevent the frequency range from going down to 3 Hz, even when the PSA is set in DC Coupled mode.
Page 77 Troubleshooting the RF Section (E4440A, E4443A, E4445A) RF Section Description (E4440A, E4443A, E4445A) If the DC/AC Coupling modes are not properly functioning, a similar table can be used. Coupling DC Block Select DC Block Bypass J3 pin 9 J3 pin 4 High High Improper displayed signal amplitudes in some attenuator settings can...
Page 78: A21 Switched Lo Distribution Amplifier (Sloda)
Troubleshooting the RF Section (E4440A, E4443A, E4445A) RF Section Description (E4440A, E4443A, E4445A) Table 3-2 A14 Settings Attenuation 2 dB_A 2 dB_A 2 dB_B 2 dB_B (dB) Select J3 pin 8 Bypass J3 pin 5 Select J3 pin 7 Bypass J3 pin 6 High High High...
Page 79 Troubleshooting the RF Section (E4440A, E4443A, E4445A) RF Section Description (E4440A, E4443A, E4445A) signal should be 3 to 7 GHz at +12 to +17 dBm. Next verify the LO outputs, all of which range from 3 to 7 GHz. To verify the High Band output, set the PSA to a center frequency of 5 GHz and set the span to 0 Hz.
Page 80: A19 Rythm
Troubleshooting the RF Section (E4440A, E4443A, E4445A) RF Section Description (E4440A, E4443A, E4445A) A19 RYTHM RYTHM stands for Routing YIG Tuned Harmonic Mixer. This is the first mixer for the preselected high bands, bands 1 though 4. Three major components make up RYTHM: the input switch, YIG preselected bandpass filter, and the harmonic mixer.
Page 81: A18 Yto
Troubleshooting the RF Section (E4440A, E4443A, E4445A) RF Section Description (E4440A, E4443A, E4445A) Common failures with RYTHM are a damaged input switch due to input overstress, and a faulty preselector. The former can cause signal loss in either High Band or Low Band, or in both. The latter will cause signal loss or flatness problems in High Band only.
Page 82: A20 Lowband
Troubleshooting the RF Section (E4440A, E4443A, E4445A) RF Section Description (E4440A, E4443A, E4445A) A20 Lowband The Lowband assembly is the front end converter for frequencies below 3 GHz. The Lowband assembly encompasses both the first and second mixers, the 2 LO multiplier, LO Nulling and filtering.
Page 83 Troubleshooting the RF Section (E4440A, E4443A, E4445A) RF Section Description (E4440A, E4443A, E4445A) second mixer is the second IF lowpass filter. LO Nulling is the process of reducing the LO feedthrough signal that appears on screen when the instrument is tuned to 0 Hz. When tuned to 0 Hz, the first LO is at 3.9214 GHz.
Page 84: A13 Front End Driver
Troubleshooting the RF Section (E4440A, E4443A, E4445A) RF Section Description (E4440A, E4443A, E4445A) The remaining biases are 2 _LO_PIN and 2 _LO_ATTEN. Since these are currents they cannot be directly measured at the Lowband assembly connector. The output of the DAC which controls this ALC circuit on A13 is A13TP25.
Page 85 Troubleshooting the RF Section (E4440A, E4443A, E4445A) RF Section Description (E4440A, E4443A, E4445A) Figure 3-8 Front End Driver Assembly - E4440A, E4443A, E4445A Chapter 3...
Page 86: A22 Low Band Preamplifier (Option 1Ds)
Troubleshooting the RF Section (E4440A, E4443A, E4445A) RF Section Description (E4440A, E4443A, E4445A) A22 Low Band Preamplifier (Option 1DS) Figure 3-9 Preamplifier Block Diagram The Low Band Preamp has a nominal gain of 30 dB and contains two electro-mechanical coax switches. The frequency range of the preamp is 100 kHz to 3 GHz.
Page 87: A27 Electronic Attenuator Description (Option B7J)
Troubleshooting the RF Section (E4440A, E4443A, E4445A) RF Section Description (E4440A, E4443A, E4445A) Figure 3-10 Coax Switch Bias Circuit A27 Electronic Attenuator Description (Option B7J) Purpose: The electronic attenuator facilitates the accurate, frequent, and rapid attenuation that is optimal for digitally modulated signals. The attenuator supplies 40 dB of attenuation in 1 dB steps.
Page 88 Troubleshooting the RF Section (E4440A, E4443A, E4445A) RF Section Description (E4440A, E4443A, E4445A) Chapter 3...
Page 89 Troubleshooting the RF Section (E4446A, E4447A, E4448A)
Page 90: Troubleshooting The Rf Section (E4446A, E4447A, E4448A)
Troubleshooting the RF Section (E4446A, E4447A, E4448A) What You Will Find in This Chapter What You Will Find in This Chapter The following information is found in this chapter: 1. Theory of operation of the RF section for model numbers E4446A, E4447A, and E4448A.
Page 91: (E4446A, E4447A, E4448A)
Troubleshooting the RF Section (E4446A, E4447A, E4448A) RF Section Description (E4446A, E4447A, E4448A) RF Section Description (E4446A, E4447A, E4448A) Purpose The RF front end section converts input signals to a 3 IF of 21.4 MHz. This section contains assemblies which generate Local Oscillator (LO) signals and assemblies which use the LO signals to mix the RF Input and the subsequent IF signals.
Page 92 Troubleshooting the RF Section (E4446A, E4447A, E4448A) RF Section Description (E4446A, E4447A, E4448A) • If the signal frequency is 3 Hz to 3 GHz, the SBTX switch routes the signal through the 27 GHz low pass filter cable, bypassing the tracking preselector and mixer.
Page 93 Troubleshooting the RF Section (E4446A, E4447A, E4448A) RF Section Description (E4446A, E4447A, E4448A) Figure 4-2 RF Section Assemblies - E4446A, E4447A, E4448A Item Description J1 Input Connector, 2.4 mm A14 Input Attenuator (10 dB)/Switch) A15 Input Attenuator (60 dB) L-bracket, RF Main A18 YTO, 2.9 to 7 GHz (Yig Tuned Oscillator) A19 SBTX/RYTHM Assembly A20 Low Band Assembly...
Page 94 Troubleshooting the RF Section (E4446A, E4447A, E4448A) RF Section Description (E4446A, E4447A, E4448A) Figure 4-3 Block Diagram with RF Options - E4446A, E4447A, E4448A Option B7J - Digital Demod Hardware. The electronic attenuator works over the lowband frequency range of 100 kHz to 3 GHz.
Page 95: Rf Assembly Quick Check - E4446A, E4447A, E4448A
Troubleshooting the RF Section (E4446A, E4447A, E4448A) RF Section Description (E4446A, E4447A, E4448A) RF Assembly Quick Check - E4446A, E4447A, E4448A To perform the following checks, it will be necessary to remove the outer NOTE case and the top brace. See Chapter 11 for removal procedures.
Page 96: A14 And A15 Step Attenuators
Troubleshooting the RF Section (E4446A, E4447A, E4448A) RF Section Description (E4446A, E4447A, E4448A) A14 and A15 Step Attenuators A faulty attenuator can cause improper signal level in both High and Low bands, often in certain combinations of attenuator settings. This can also prevent the 50 MHz calibrator signal from being displayed.
Page 97 Troubleshooting the RF Section (E4446A, E4447A, E4448A) RF Section Description (E4446A, E4447A, E4448A) Improper displayed signal amplitudes in some attenuator settings can be isolated to either A13 or A14 based on which steps are incorrect. Signal out of the attenuators can be measured by disconnecting the appropriate semirigid cable and using a spectrum analyzer.
Page 98: A21 Feloma And A29 Feloma/Sbtx Driver
Troubleshooting the RF Section (E4446A, E4447A, E4448A) RF Section Description (E4446A, E4447A, E4448A) A21 FELOMA and A29 FELOMA/SBTX Driver Figure 4-6 FELOMA Block Diagram The A21 FELOMA (Frequency Extended LO Multiplier-Amplifier) provides amplitude leveling and distribution of the LO signal from the A18 YTO assembly.
Page 99 Troubleshooting the RF Section (E4446A, E4447A, E4448A) RF Section Description (E4446A, E4447A, E4448A) Verifying the A21 FELOMA Assembly First check that the YTO signal is present at the LO IN connector by measuring the power at the cable from the YTO. The signal should be 3-7 GHZ at +12 to +17 dBm.
Page 100 Troubleshooting the RF Section (E4446A, E4447A, E4448A) RF Section Description (E4446A, E4447A, E4448A) Verifying the A29 SBTX/FELOMA Driver Assembly Test points are provided on the A29 SBTX/FELOMA Driver board that allow you to confirm the DC drive levels to the FELOMA assembly are correct.
Page 101: A19 Sbtx/Rythm Assembly
Troubleshooting the RF Section (E4446A, E4447A, E4448A) RF Section Description (E4446A, E4447A, E4448A) A19 SBTX/RYTHM Assembly The A19 assembly is comprised of the SBTX (switched barium-ferrite tuned filter/mixer), and the RYTHM (routing yig-tuned harmonic mixer). The SBTX and the RYTHM are not separately replaceable. The SBTX provides a switch that routes the input signal to the RYTHM (high band and low band signals) or through the SBTX preselector and mixer (mm band path).
Page 102 Troubleshooting the RF Section (E4446A, E4447A, E4448A) RF Section Description (E4446A, E4447A, E4448A) The SBTX bands are bands 5 and 6 whose start (minimum) and stop (maximum) frequencies are shown in the following table: Band Minimum Frequency Maximum Frequency 26.4 GHz 31.5 GHz 31.0 GHz 50 GHz...
Page 103: A18 Yto
Troubleshooting the RF Section (E4446A, E4447A, E4448A) RF Section Description (E4446A, E4447A, E4448A) 2. If the problem is in high band or mm band, set the PSA for a start frequency of 3 GHz and stop frequency of 30 GHz. Verify the presence of a sweep ramp on the rear panel PRE-SEL TUNE OUT connector.
Page 104: A20 Lowband
Troubleshooting the RF Section (E4446A, E4447A, E4448A) RF Section Description (E4446A, E4447A, E4448A) A20 Lowband The Lowband assembly is the front end converter for frequencies below 3 GHz and the 2 converter for input frequencies 26.8 GHz to 50 GHz. The Lowband assembly encompasses both the first and second mixers, the 2 LO amplifiers, LO Nulling and filtering.
Page 105 Troubleshooting the RF Section (E4446A, E4447A, E4448A) RF Section Description (E4446A, E4447A, E4448A) The 3 Hz to 3 GHz RF input signal enters the Lowband assembly at A20J1. The first component in the RF path is the RF Limiter. This limiter prevents excessive RF energy from damaging the first mixer when the input attenuator is set to zero dB.
Page 106 Troubleshooting the RF Section (E4446A, E4447A, E4448A) RF Section Description (E4446A, E4447A, E4448A) With the PSA set to a center frequency below 3 GHz, and in zero span, check that the bias voltages are present. Some of these can be accessed on the A13J12 Test Connector and some others have test points.
Page 107: A13 Front End Driver
Troubleshooting the RF Section (E4446A, E4447A, E4448A) RF Section Description (E4446A, E4447A, E4448A) A13 Front End Driver The Front End Driver assembly contains the circuitry needed to drive the microcircuits and other assemblies used in the RF section. Many of these circuits can be verified using the previous discussions for verifying these assemblies.
Page 108: A22 Low Band Preamplifier (Option 1Ds)
Troubleshooting the RF Section (E4446A, E4447A, E4448A) RF Section Description (E4446A, E4447A, E4448A) A22 Low Band Preamplifier (Option 1DS) Figure 4-9 Preamplifier Block Diagram The Low Band Preamp has a nominal gain of 30 dB and contains two electro-mechanical coax switches. The frequency range of the preamp is 100 kHz to 3 GHz.
Page 109: A27 Electronic Attenuator Description (Option B7J)
Troubleshooting the RF Section (E4446A, E4447A, E4448A) RF Section Description (E4446A, E4447A, E4448A) Figure 4-10 Coax Switch Bias Circuit A27 Electronic Attenuator Description (Option B7J) Purpose: The electronic attenuator facilitates the accurate, frequent, and rapid attenuation that is optimal for digitally modulated signals. The attenuator supplies 40 dB of attenuation in 1 dB steps.
Page 110 Troubleshooting the RF Section (E4446A, E4447A, E4448A) RF Section Description (E4446A, E4447A, E4448A) Chapter 4...
Page 111: Troubleshooting The Synthesizer Section
Troubleshooting the Synthesizer Section...
Page 112: What You Will Find In This Chapter
Troubleshooting the Synthesizer Section What You Will Find in This Chapter What You Will Find in This Chapter The synthesizer section covers the synthesizer assembly, the reference NOTE assembly, and the second LO/fan control assembly. The following information is found in this chapter: 1.
Page 113: A12 Synthesizer Assembly Description
Troubleshooting the Synthesizer Section A12 Synthesizer Assembly Description A12 Synthesizer Assembly Description Purpose. The A12 synthesizer assembly phase locks the A18 YTO, resulting in a very stable, low phase noise LO signal. The A12 synthesizer assembly consists of sub-assemblies A12A1 LO/Synthesizer board and the A12A2 sample oscillator.
Page 114: Verifying The A12 Synthesizer Board
Troubleshooting the Synthesizer Section Verifying the A12 Synthesizer Board Verifying the A12 Synthesizer Board Troubleshooting LO and Sampling Oscillator Unlock Conditions: Error messages Sampling Oscillator Unlock, Failure acquiring SO frequency lock This message appears when the 600 MHz signal to the A12A2 is not present.
Page 115 Troubleshooting the Synthesizer Section Verifying the A12 Synthesizer Board Power on the PSA and immediately measure the Sampler out signal amplitude on the spectrum analyzer. The signal should be 4 GHz at 0 dBm. If the PSA's internal auto align runs, the measured signal will change to about -13 dBm.
Page 116: E4440-60049 Extender Board
Troubleshooting the Synthesizer Section Verifying the A12 Synthesizer Board Dual Loop troubleshooting If an LO unlock problem occurs only in dual loop mode (span < 2 MHz) the cause is either the A12A2 Sampling Oscillator board or the sampler circuit on the A12A1. The A12A2 board is only used in dual loop mode. To verify the problem is the A12A2 you must measure the sampling oscillator output at A12A2 J1.
Page 117 Troubleshooting the Synthesizer Section Verifying the A12 Synthesizer Board Figure 5-1 E4440-60049 Extender Board Table 5-1 E4440-60049 Extender Board Jack Descriptions Jack # Signal Assembly that is extended 600 MHz A11 Reference Assembly 300 MHz A10 3rd Converter Assembly 600 MHz A12 Synthesizer Assembly 300 MHz A11 Reference Assembly...
Page 118: A11 Reference Assembly Description
Troubleshooting the Synthesizer Section A11 Reference Assembly Description A11 Reference Assembly Description Purpose. The A11 reference assembly provides a phase locked 10 MHz signal to other boards and assemblies in the instrument. The 10 MHz reference is phase locked either to an internal reference source or to an externally applied signal.
Page 119: 100 Mhz Vcxo
Troubleshooting the Synthesizer Section A11 Reference Assembly Description 100 MHz VCXO The 100 MHz voltage controlled crystal oscillator is used as the main reference in the instrument. It is phase-locked with either an internal or external frequency reference. The overall frequency accuracy of the instrument is determined by the accuracy of the frequency reference.
Page 120: Verifying The A11 Reference Board
Troubleshooting the Synthesizer Section Verifying the A11 Reference Board Verifying the A11 Reference Board The instrument achieves its frequency stability from the phase locked circuitry on the A11 reference assembly. The 100 MHz phase locked VCXO is the heart of this assembly. This VCXO is divided by 10 to a phase locked 10 MHz reference for use on several other PC board assemblies in the instrument.
Page 121: Reference Assembly Detailed Troubleshooting
Troubleshooting the Synthesizer Section Verifying the A11 Reference Board Measure the 10 MHz Rear Panel Output 6. Connect the spectrum analyzer to the 10 MHz Out (Switched) BNC connector on the PSA rear panel. The 10 MHz signal amplitude should be +6 dBm ±2 dB. Measure the 300 MHz Out at P4 7.
Page 122: A9 Second Lo/Fan Control Assembly Description
Troubleshooting the Synthesizer Section A9 Second LO/Fan Control Assembly Description A9 Second LO/Fan Control Assembly Description Second LO Circuitry Purpose. The A9 second LO assembly generates the 3.9 GHz LO signal that is used by the A20 low band assembly to generate the low band second IF signal of 321.4 MHz.
Page 123: Verifying The A9 2Nd Lo/ Fan Control Board
Troubleshooting the Synthesizer Section Verifying the A9 2nd LO/ Fan Control Board Verifying the A9 2nd LO/ Fan Control Board If the Fans Are Not Operating The power supply may be in thermal shutdown if the instrument has CAUTION been operating without the fans running. Allow the instrument to cool down before troubleshooting.
Page 124 Troubleshooting the Synthesizer Section Verifying the A9 2nd LO/ Fan Control Board 3. If the correct voltage is present and the fan connector is in good mechanical condition, suspect a defective fan. Refer to Chapter 11 assembly replacement procedures. 4. If the voltage is not present, suspect a defective A9 assembly. Refer Chapter 11 for assembly replacement procedures.
Page 125: Troubleshooting The If Section
Troubleshooting the IF Section...
Page 126: What You Will Find In This Chapter
Troubleshooting the IF Section What You Will Find in This Chapter What You Will Find in This Chapter The following information is presented in this chapter: 1. Theory of operation of the 3rd converter section and the IF section. 2. Isolating the cause of an hardware problem by verifying the functionality of assemblies in the IF section signal path.
Page 127: A10 Third Converter Assembly Description
Troubleshooting the IF Section A10 Third Converter Assembly Description A10 Third Converter Assembly Description Purpose: The 3rd converter assembly levels the 321.4 MHz IF to compensate for system loss, before mixing the 321.4 MHz IF to a 21.4 MHz IF. The 3rd converter also provides the 50 MHz and the 321.4 MHz calibrator signals.
Page 128: 321.4 Mhz Cal Signal Mixer
Troubleshooting the IF Section A10 Third Converter Assembly Description 321.4 MHz Cal Signal Mixer The 300 MHz signal from the reference assembly (via the motherboard) is summed with the 21.4 MHz signal received from the A8 analog IF assembly. The 321.4 MHz calibration signal is used during the internal Align All Now routine to calibrate the bandwidth shapes.
Page 129: Verifying The A10 Third Converter Board E4440A, E4443A, E4445A, E4446A, E4448A)
Troubleshooting the IF Section Verifying the A10 Third Converter Board E4440A, E4443A, E4445A, E4446A, E4448A) Verifying the A10 Third Converter Board E4440A, E4443A, E4445A, E4446A, E4448A) Begin the troubleshooting process by examining the instrument overall block diagram. Please note the analyzer settings required to obtain the signal levels printed on the block diagram.
Page 130 Troubleshooting the IF Section Verifying the A10 Third Converter Board E4440A, E4443A, E4445A, E4446A, E4448A) Option AYZ IF Input Check This procedure will check for proper gain through the 3 converter when the external mixing path is enabled. Setting the Synthesized Sweeper Power Level 1.
Page 131: (E4447A)
Troubleshooting the IF Section Verifying the A10 Third Converter Board (E4447A) Verifying the A10 Third Converter Board (E4447A) Begin the troubleshooting process by examining the instrument overall block diagram. Please note the analyzer settings required to obtain the signal levels printed on the block diagram. Third Converter Troubleshooting Input Level Check Do not attempt to disconnect W18 at J2.
Page 132 Troubleshooting the IF Section Verifying the A10 Third Converter Board (E4447A) sensor using an adapter between the cable and the power sensor. 3. Set the source frequency to 321.4 MHz. Adjust the source power level for a power meter reading of −30 dBm ± 0.1 dB. 4.
Page 133: A8 Analog If Assembly Description
Troubleshooting the IF Section A8 Analog IF Assembly Description A8 Analog IF Assembly Description Purpose. The A8 analog IF assembly receives a 21.4 MHZ signal from the A10 3rd Converter. The 21.4 MHz signal is amplified, pre-filtered, mixed with the 28.9 MHz fourth LO to provide a 7.5 MHz final IF, post filtered, and amplified again.
Page 134: 21.4 Mhz Anti-Alias Filter
Troubleshooting the IF Section A8 Analog IF Assembly Description 21.4 MHz Anti-Alias Filter This filter serves two purposes. First, it rejects the image band at 31.4 MHz to 41.4 MHz. Second, it band limits the signal to a width of 10 MHz, and so provides much of the anti-alias filtering for the ADC.
Page 135: Triggering
Troubleshooting the IF Section A8 Analog IF Assembly Description Triggering The analog IF assembly has a second IF strip for generating triggers. Power Supply Switching Reference This circuit provide a 244 kHz switching frequency to the A5 power supply. The A5 power supply divides this frequency in half, therefore, the power supply switching rate is 122 kHz.
Page 136: Verifying The A8 Analog If Assembly Signal Path
Troubleshooting the IF Section Verifying the A8 Analog IF Assembly Signal Path Verifying the A8 Analog IF Assembly Signal Path This procedure assumes the A10 3rd Converter assembly is functioning correctly. To verify proper 3rd Converter functionality, refer to the “Verifying the A10 Third Converter Board E4440A, E4443A, E4445A, E4446A, E4448A)”...
Page 137: Analog If Assembly Detailed Troubleshooting
Troubleshooting the IF Section Verifying the A8 Analog IF Assembly Signal Path Analog IF Assembly Detailed Troubleshooting If the quick check power level is not correct, or you still suspect the assembly is faulty, other items can be checked to verify the analog IF assembly.
Page 138 Troubleshooting the IF Section Verifying the A8 Analog IF Assembly Signal Path Testing the Cal Osc Signal The 21.4 MHz Cal Osc HI and Cal Osc LO signals are routed through the motherboard to the A10 Third Converter. The E4440-60048 extender board has test jacks for both of these signals.
Page 139: A7 Digital If Assembly Descriptions
Troubleshooting the IF Section A7 Digital IF Assembly Descriptions A7 Digital IF Assembly Descriptions Two versions of the A7 Digital IF assembly are available. Instruments with Option 124 (Video Out) or Option 122 or 140 (Wideband IF) contain the optional Digital IF assembly E4440-60206. This assembly requires slightly different troubleshooting techniques than the standard assembly.
Page 140: Interconnections To Other Assemblies
Troubleshooting the IF Section A7 Digital IF Assembly Descriptions Interconnections to other assemblies • A7P1 7.5 MHz in from A8 Analog IF assembly. • SR_H (Sample Rate High) and SR_L (Sample Rate Low) clock signals from the A8 Analog IF assembly. Chapter 6...
Page 141: Verifying The A7 Digital If Board
Troubleshooting the IF Section Verifying the A7 Digital IF Board Verifying the A7 Digital IF Board This procedure assumes the A10 3rd Converter assembly and the A8 analog IF assembly are functioning correctly. To verify proper functionality, refer to the “Verifying the A10 Third Converter Board E4440A, E4443A, E4445A, E4446A, E4448A)”...
Page 142: Digital If Assembly Detailed Troubleshooting
Troubleshooting the IF Section Verifying the A7 Digital IF Board 9. If your instrument contains Option 124 Video Out, See the Option 124 Troubleshooting section of this service guide for details on verifying the video out port. Digital IF Assembly Detailed Troubleshooting If the quick check power level is not correct, other items can be checked to verify the A7 digital IF assembly.
Page 143 Troubleshooting the IF Section Verifying the A7 Digital IF Board Figure 6-2 A7 Clock Measurements Options 122 or 140, and 124 (E4440-60206) Chapter 6...
Page 144 Troubleshooting the IF Section Verifying the A7 Digital IF Board Chapter 6...
Page 145 Troubleshooting the Processor, Power Supply, and Display...
Page 146: Troubleshooting The Processor, Power Supply, And Display What You Will Find In This Chapter
Troubleshooting the Processor, Power Supply, and Display What You Will Find in This Chapter What You Will Find in This Chapter The following information is presented in this chapter: 1. Theory of operation of the CPU, power supply, and display sections along with descriptions of the motherboard, front panel interface assembly and SCSI Interface board.
Page 147: A25 Motherboard Description
Troubleshooting the Processor, Power Supply, and Display A25 Motherboard Description A25 Motherboard Description Purpose. The A25 Motherboard provides the following functions: • Provides a load to the power supply assembly for the +9 V, −5.2 V, −15 V, +5.2 V supply lines. This allows a minimum set of PC board assemblies to be present for power supply operation.
Page 148: A26 Cpu Assembly Description
Troubleshooting the Processor, Power Supply, and Display A26 CPU Assembly Description A26 CPU Assembly Description Purpose. The A26 CPU (processor) assembly consists of three boards: the base CPU processor board, the A26A1 128M DRAM card, and the A26A2 Flash memory board. The operating system, the main firmware, measurement applications, and the IP address and saved states, are stored in Flash memory.
Page 149: Verifying The A26 Cpu Assembly
Troubleshooting the Processor, Power Supply, and Display Verifying the A26 CPU Assembly Verifying the A26 CPU Assembly The A26 CPU assembly slides into the instrument from the rear and connects to the A25 Motherboard assembly. The GP-IB interface connector, LAN connector, RS-232 connector, Parallel Interface connector, and the external VGA monitor output connector are all soldered directly onto the CPU board.
Page 150 Troubleshooting the Processor, Power Supply, and Display Verifying the A26 CPU Assembly The message “LAN timeout; External loopback test failed” indicates the instrument didn’t sense a LAN connection. A gray screen appears for about 15 seconds. Next a screen appears with the instrument model number and firmware revision information.
Page 151 Troubleshooting the Processor, Power Supply, and Display Verifying the A26 CPU Assembly auto-boot process appears, the firmware files on the A26A2 Flash board may be defective. Try loading new firmware before replacing the A26 CPU or A26A2 Flash assemblies. Suspect the DRAM (A26A1) board is not seated correctly or the board has failed if 3 green LEDs on the CPU board remain on and the following message displayed on screen: CPU0...
Page 152: Cpu Assembly Detailed Troubleshooting
Troubleshooting the Processor, Power Supply, and Display Verifying the A26 CPU Assembly CPU Assembly Detailed Troubleshooting There are a few items that should be checked before suspecting a defective CPU assembly. The CPU must have all the DC power supplies coming from the motherboard.
Page 153: A5 Power Supply Assembly Description
Troubleshooting the Processor, Power Supply, and Display A5 Power Supply Assembly Description A5 Power Supply Assembly Description Purpose. The A5 Power Supply assembly is a switching power supply that operates at a switching frequency of 121.95 kHz. The power supply automatically senses the input power and selects between two voltage ranges, 90 to 132 VAC or 195 to 250 VAC.
Page 154: Isolating An A5 Power Supply Problem
Troubleshooting the Processor, Power Supply, and Display Isolating an A5 Power Supply Problem Isolating an A5 Power Supply Problem There are no fuses to replace within the power supply. If you determine NOTE that the power supply is the failed assembly, replace the power supply. Observing the LED on the front of the instrument, and measuring the probe power connector, will determine if there is catastrophic failure in the power supply assembly.
Page 155: Verifying The Individual Voltage Supplies
Troubleshooting the Processor, Power Supply, and Display Isolating an A5 Power Supply Problem Verifying the Individual Voltage Supplies If any one individual supply line from the power supply assembly develops an over voltage/current problem, all supply lines are affected. The supply will go into a “burp” mode where the supplies will cycle on and off at a low voltage level.
Page 156 Troubleshooting the Processor, Power Supply, and Display Isolating an A5 Power Supply Problem Remove these assemblies first (refer to Chapter 11 for removal instructions): • A11 Reference assembly • A12 Synthesizer assembly • A10 Third Converter assembly • A7 Digital IF assembly •...
Page 157 Troubleshooting the Processor, Power Supply, and Display Isolating an A5 Power Supply Problem To further isolate the failure in the remaining “minimum assemblies”, NOTE measure the resistance (with the power turned off) from the power supply test points on the digital IF extender board to ACOM on the extender board.
Page 158: A6 Scsi Interface Board Description
Troubleshooting the Processor, Power Supply, and Display A6 SCSI Interface Board Description A6 SCSI Interface Board Description Purpose. The SCSI board assembly plugs directly into the A26 CPU assembly. The SCSI board assembly provides a connector for an external keyboard. This keyboard connector is compatible with an external AT style PC keyboard.
Page 159: Front Frame Description
Troubleshooting the Processor, Power Supply, and Display Front Frame Description Front Frame Description Purpose. The front frame assembly contains the following four assemblies. A1 LCD Display The LCD display assembly provides annotation, graticule, and trace information, as processed by the CPU though the A2 Front Panel Interface board.
Page 160: Isolating A Display Problem
Troubleshooting the Processor, Power Supply, and Display Isolating a Display Problem Isolating a Display Problem There are no front panel adjustments for intensity and contrast of the NOTE LCD. 1. Verify the instrument went through a complete power-on sequence. Refer to "Troubleshooting Power-up Problems"...
Page 161 Troubleshooting the Processor, Power Supply, and Display Isolating a Display Problem Figure 7-2 Verifying the Inverter Boards Test Point Signal or Voltage Test Point Signal or Voltage CN1 pin 1 +4.9 Vdc T1 pin 4 +3.3 Vdc (input) CN1 pin 2 +4.9 Vdc T1 pin 5 +33.4 mV...
Page 162: Verifying Hsync, Vsync, And Lcd Clock
Troubleshooting the Processor, Power Supply, and Display Isolating a Display Problem Verifying HSYNC, VSYNC, and LCD Clock To verify that the HSYNC (horizontal sync), VSYNC (vertical sync), and LCD clock are functioning correctly, measure the following signals as indicated in Figure 7-3.
Page 163 Troubleshooting the Processor, Power Supply, and Display Isolating a Display Problem Figure 7-3 Verifying HSYNC, VSYNC, and LCD Clock Chapter 7...
Page 164: Rear Panel Description
Troubleshooting the Processor, Power Supply, and Display Rear Panel Description Rear Panel Description The following connectors are located on the rear panel of the instrument: PRE-SEL OUT. Preselected External Mixer Tune output, allows tuning voltage for a Preselected mixer. EXT REF IN. The external reference allows you to select an external reference to phase lock all oscillators in the instrument.
Page 165: Hardware Options
Hardware Options...
Page 166: What You Will Find In This Chapter
Hardware Options What You Will Find in This Chapter What You Will Find in This Chapter The following information is found in this chapter: 1. Procedures to verify the functionality of each option. 2. Block diagrams of each option. This following descriptions are found in this chapter: Verifying Option 107 Audio Input page 167 Verifying Option 110...
Page 167: Verifying Option 107 Audio Input
Hardware Options Verifying Option 107 Audio Input Verifying Option 107 Audio Input The PSA must have Option 233, Measuring Receiver Personality installed in order to enable Option 107, the Audio Input. Option 233 will always be present since the Audio Input Option 107 is only available on instruments that have Option 233.
Page 168: Verification Of Option 107
Hardware Options Verifying Option 107 Audio Input Verification of Option 107 PSA settings: Press the front panel Mode Select the Measuring Receiver Press Measure Select Audio AC Level Function Generator settings: Output level: 1.5 V rms Frequency: 1 kHz You are going to measure the output level of a source at 5 different levels where each output level activates a different gain stage in the Audio board.
Page 169: Verifying Option 110
100 kHz to 50 GHz Preamplifier (E4446A/47A/48A) Option 110 provides approximately 30 dB of preamplification on the PSA series spectrum analyzers. The range of operation is from 10 MHz to the upper frequency of the spectrum analyzer. Option 1DS, the 100 kHz to 3 GHz preamplifier, cannot reside in the instrument when Option 110 is present.
Page 170 Hardware Options Verifying Option 110 Frequency Measured Amplitude Measured Amplitude Preamp ON Preamp OFF 20 GHz 30 GHz 40 GHz 50 GHz The accuracy of the measured amplitude will depend on the source flatness, quality of interconnect cables and whether you performed Preselector Center, and the frequency response of the PSA.
Page 171 Hardware Options Verifying Option 110 Figure 8-2 Preamplifier Pin Out and Expected Voltage Levels Chapter 8...
Page 172: Overview Of Option 115 Extended Memory
Hardware Options Overview of Option 115 Extended Memory (all PSA Series) Overview of Option 115 Extended Memory (all PSA Series) Provides 512 MB of additional memory for optional measurement personalities (such as Option BAF, W-CDMA), user state, trace and screen dumps, and personality power on last state files. This 512 MB of memory is in addition to the 64 MB of flash memory mounted on the CPU assembly.
Page 173: Verification Of Option 115
Hardware Options Overview of Option 115 Extended Memory (all PSA Series) Verification of Option 115 Check for the presence of Option 115 by pressing System Show System and looking for 115 in the Options section. You can also press and see that Option...
Page 174: Verifying Option 122 Or 140, Wide Bandwidth Digitizer
Hardware Options Verifying Option 122 or 140, Wide Bandwidth Digitizer Verifying Option 122 or 140, Wide Bandwidth Digitizer The following procedures outline how to place the instrument into wideband mode and verify the signal path is working correctly. Since both the A31 Wideband Analog IF and A32 Wideband Digital IF must work together to provide a signal on screen, both will be tested together here.
Page 175: Setting Up The Instrument In Wideband Mode
Hardware Options Verifying Option 122 or 140, Wide Bandwidth Digitizer Setting up the instrument in wideband mode: The wideband IF is only accessible in the Basic instrument mode. 1. Press Mode Basic 2. Press . This selects the wideband IF path Meas Setup IF Path Wide...
Page 176: Setting Up The Instrument In Narrow Band Mode
Hardware Options Verifying Option 122 or 140, Wide Bandwidth Digitizer Setting up the instrument in narrow band mode: Press . This selects the “narrow band” or Meas Setup IF Path Narrow standard IF Path through the A7 Analog IF and A8 Digital IF assemblies.
Page 177: If The Problem Only Exists In The Wideband Path
Hardware Options Verifying Option 122 or 140, Wide Bandwidth Digitizer If the problem only exists in the wideband path: Set up the instrument in wideband mode as documented above. 1. Assure the Wideband Analog IF and Wideband Digital IF assemblies are properly seated.
Page 178: Viewing The Wide Band Response To A Comb Signal (Inner Loop Test)
Hardware Options Verifying Option 122 or 140, Wide Bandwidth Digitizer Viewing the wide band response to a comb signal (inner loop test): The wideband IF is only accessible in the Basic instrument mode. 1. Press Mode Basic 2. Press . This selects the wideband IF path. Meas Setup IF Path Wide...
Page 179: Viewing The Wide Band Response To A Comb Signal (Outer Loop Test)
Hardware Options Verifying Option 122 or 140, Wide Bandwidth Digitizer Viewing the wide band response to a comb signal (outer loop test): If the display is correct, you must now inject a comb calibration signal through a larger signal path. The comb signal from A32 Wide Band Digital IF will now be injected into the A14 input attenuator and go through the RF path and the A10 3rd Converter before entering the A31 wideband analog and A32 digital IF assemblies.
Page 180 Hardware Options Verifying Option 122 or 140, Wide Bandwidth Digitizer Troubleshooting Table Test Test Assumptions Possible Problem Notes Condition Results IF Align signal Good This means the A31 Wide band Analog IF circuits selected (Inner from the point where the calibrator signal is loop test) applied are OK.
Page 181: Wide Band Analog If Assembly Filter Path Test
Hardware Options Verifying Option 122 or 140, Wide Bandwidth Digitizer Wide Band Analog IF Assembly Filter Path Test This routine allows you to use the WB Align (f=300 MHz) comb cal signal to view the filter response of the 80 MHz filter path and the 36 MHz filter paths.
Page 182 Hardware Options Verifying Option 122 or 140, Wide Bandwidth Digitizer 11.Press and turn the dither signal to view WB ADC Dither the effect of turning dither on and off. 12.Press Analog Filter 13.Select Narrow 36 MHz The PSA display now shows the filter response of the 36 MHz filter path in the Wideband Analog IF assembly.
Page 183: Option 122 Or 140 Lowband Filters
Hardware Options Verifying Option 122 or 140, Wide Bandwidth Digitizer Option 122 or 140 Lowband Filters Figure 8-8 shows FL2, FL3, and associated cables. FL2 on Option 122 or 140 units is a 100 MHz BW filter. Non-Option 122/140 units have 40 MHz BW filters.
Page 184 Hardware Options Verifying Option 122 or 140, Wide Bandwidth Digitizer Chapter 8...
Page 185 (66) 321.4 MHz IF OUT To Rear Panel (Narrow IF Path only) -26 dBm, 321.4 MHz P104 A31 WIDE BAND ANALOG IF A32 WIDE BAND DIGITAL IF 46 MHz 2nd IF Aux 260- J300 2 dB CAPTURE WB 3rd P100 TP600 Input From A10 3 dB...
Page 186 Hardware Options Verifying Option 122 or 140, Wide Bandwidth Digitizer Chapter 8...
Page 187: Overview And Verification Of Option 123, Microwave And Millimeter Preselector Bypass
Hardware Options Overview and Verification of Option 123, Microwave and Millimeter Preselector Bypass Overview and Verification of Option 123, Microwave and Millimeter Preselector Bypass Overview of Option 123 in the E4440A, E4443A, or E4445A Option 123 provides an unpreselected input mixer path for the E4440A, E4443A and E4445A spectrum analyzers in the 3.05 to 26.5 GHz frequency range.
Page 188 Hardware Options Overview and Verification of Option 123, Microwave and Millimeter Preselector Bypass Figure 8-9 Block Diagram for DC to 26.5 GHz Option 123 Instruments Figure 8-9 shows the block diagram of the instrument with an upper frequency of 26.5 GHz. Functionally, Option 123 adds two new switches (Sw1 and Sw2) into the signal path plus an additional mixer.
Page 189 Hardware Options Overview and Verification of Option 123, Microwave and Millimeter Preselector Bypass The 3rd converter board in the instrument contains a splitter that is used route the 321.4 MHz IF signal to the normal digital IF and also, out the 321.4 MHz IF Out connector on the instrument's rear panel. If Option 122 (80 MHz Bandwidth Digitizer) is installed, the second path from the splitter is first routed to the Option 122 Analog IF board where a switch is used to route the IF signal through the Option 122...
Page 190 Hardware Options Overview and Verification of Option 123, Microwave and Millimeter Preselector Bypass Figure 8-10 Option 123 Switch Wiring Wire Color Voltage Blue 25 Vdc, Steady state. Preselector Off to On transition should show a negative-going pulse for approximately 18 ms, then the 25 Vdc steady state Green 25 Vdc supply...
Page 191 Hardware Options Overview and Verification of Option 123, Microwave and Millimeter Preselector Bypass Verifying Option 123, Microwave Preselector Bypass (E4440A/E4443A/E4445A) The following test switches in and out the preselector bypass path while viewing a signal. There may be slight amplitude differences between the two signal paths.
Page 192 Hardware Options Overview and Verification of Option 123, Microwave and Millimeter Preselector Bypass highband mixer. Steps will also appear at 13.2 GHz and 19.2 GHz. 5. Tune the source and PSA to 10 GHz, 15 GHz, and 20 GHz and check the signal level.
Page 193 OPTION 123 (E4440A, 43A, 45A only) SWITCHABLE MICROWAVE PRESELECTOR BYPASS BLOCK DIAGRAM Bottom Switch Front Panel A14 INPUT ATTENUATOR A A15 INPUT ATTENUATOR B A19 RYTHM RF Input Frequency (OPTION 123) To Lowband 5 GHz, -25 dBm 5 GHz, -35 dBm 2 dB 2 dB 10 dB...
Page 194 Hardware Options Overview and Verification of Option 123, Microwave and Millimeter Preselector Bypass Chapter 8...
Page 195 E4440A/E4443A/E4445A OPTION 110 AND 123 BLOCK DIAGRAM Bottom Switch Front Panel A19 RYTHM RF Input Frequency (OPTION 123) Note 1: To Lowband A14 INPUT ATTENUATOR A A15 INPUT ATTENUATOR B -39 dBm Note 1: Note 2: -65 dBm W111 5 GHz, -25 dBm -35 dBm Switch Note 2:...
Page 196 Hardware Options Overview and Verification of Option 123, Microwave and Millimeter Preselector Bypass Chapter 8...
Page 197: Overview Of Option 123 In The E4446A, E4447A, Or E4448A
Hardware Options Overview and Verification of Option 123, Microwave and Millimeter Preselector Bypass Overview of Option 123 in the E4446A, E4447A, or E4448A Functionality During normal operation of the PSA, when operating above 3 GHz, a preselector precedes the input mixer. This preselector is part of the SBTX and RYTHM circuitry.
Page 198 Hardware Options Overview and Verification of Option 123, Microwave and Millimeter Preselector Bypass After the RF input attenuators the RF path is either routed to the normal preselected path (through SBTX and RYTHM) or to the unpreselected path using the coax transfer switch. The unpreselected mixer uses the ~3 to 7 GHz LO from the LO output port of the LO Multiplying Amplifier (referred to as FELOMA elsewhere).
Page 199 Hardware Options Overview and Verification of Option 123, Microwave and Millimeter Preselector Bypass Verifying Option 123, Microwave Preselector Bypass (E4446A/E4447A/E448A) The following test switches in and out the preselector bypass path while viewing a signal. There may be slight amplitude differences between the two signal paths.
Page 200 Hardware Options Overview and Verification of Option 123, Microwave and Millimeter Preselector Bypass Troubleshooting Hints 1. Place the instrument on a table. Remove the screws that hold the instrument front frame to the chassis so the front frame can be dropped to expose the circuitry behind the front frame.
Page 201 E4446A/E4447A/E4448A OPTION 110 AND 123 BLOCK DIAGRAM A14 INPUT ATTENUATOR A A27 ELECTRONIC ATTENUATOR Note 1: Note 1: A19 FL1 -25 dBm -65 dBm -40 dBm OPTION B7J 27 GHz LPF RYTHM 3 Hz - 2.85 GHz Note 2: Note 2: Note 1: -37 dBm LOW BAND...
Page 202 Hardware Options Overview and Verification of Option 123, Microwave and Millimeter Preselector Bypass Chapter 8...
Page 203: Verifying Option 124, Y-Axis Video Out
Hardware Options Verifying Option 124, Y-Axis Video Out Verifying Option 124, Y-Axis Video Out The following two procedures outline how to verify that the rear panel video out signal is correct. The first procedure is a quick check of the 0 to 1 V video out signal level that requires only a voltmeter.
Page 204: Procedure 2 - Detailed View Of The Video Signal
Hardware Options Verifying Option 124, Y-Axis Video Out 6. Place the displayed signal at mid screen by pressing , and Amplitude adjusting the reference level until the signal is as close as possible to exactly mid screen. The voltmeter should read 0.5 volts. 7.
Page 205 Hardware Options Verifying Option 124, Y-Axis Video Out Oscilloscope Setup: Input 1 Turn on the input. This input connected to 1 M ohms, PSA Video Out DC Coupling, BW limit OFF Probe = 1 Input 2 Turn on the input. This input connected to 1 M ohms, Trigger 1 Out of PSA.
Page 206 Hardware Options Verifying Option 124, Y-Axis Video Out Chapter 8...
Page 207 Block Diagrams...
Page 208: Block Diagrams What You Will Find In This Chapter
1. A table showing signal levels in the instrument’s forward path. 2. Descriptions of the signal mnemonics used in the instrument and mnemonic pin locations. 3. Overall block diagrams of the Agilent PSA Series Spectrum Analyzers. The following sections are found in this chapter: •...
Page 209: Signal Mnemonics
Block Diagrams Signal Mnemonics Signal Mnemonics Faulty assemblies can be identified by confirming that a specific signal on an assembly is not at its expected level. Table 9-1 Mnemonic Descriptions Mnemonic Description ACOM Analog ground (chassis) CALOSC_H Differential ECL 21.4 MHz calibration oscillator output from the analog IF board to the RF board CALOSC_L Differential ECL 21.4 MHz calibration oscillator output from the analog IF board to the RF board DCOM...
Page 210 Block Diagrams Signal Mnemonics Table 9-1 Mnemonic Descriptions Mnemonic Description FP_RED1 Flat panel display red 1 signal from the CPU board to the front panel interface board FP_RED2 Flat panel display red 2 signal from the CPU board to the front panel interface board FP_RED3 Flat panel display red 3 (MSB) signal from the CPU board to the front panel interface board FP_VSYNCL...
Page 211 Block Diagrams Signal Mnemonics Figure 9-1 Graphic Symbols Chapter 9...
Page 212: Overall Block Diagrams
Block Diagrams Overall Block Diagrams Overall Block Diagrams Chapter 9...
Page 213 (Option 122) (40) Note - POWER LEVELS BASED ON THESE SETTINGS: IF OUT TO A31 WB A-IF E4440A, E4443A and E4445A OVERALL BLOCK DIAGRAM Center Frequency - 50 MHz for Low band, 5 GHz for High band, A22 LOWBAND PREAMP Preselector Centering Required for Input A27 ELECTRONIC ATTENUATOR -35.5 dBm...
Page 214 Block Diagrams Overall Block Diagrams Chapter 9...
Page 215 PSA SERIES FRONT PANEL INTERFACE BLOCK DIAGRAM A2 FRONT PANEL INTERFACE 40 PIN 5 PIN A2A1 ROW_STRB_L BACKLIGHT_OFF KBDROW 0:7 A2W21 INVERTER A1DS1 BACKLIGHT ASSEMBLY COL 0:7 DAC_STRB_L KBDCOL 0:7 BACKLIGHT A1 FLAT PANEL INTENSITY 5 PIN DISPLAY TO KEYBOARD...
Page 216 Block Diagrams Overall Block Diagrams Chapter 9...
Page 217 Agi l ent MOTHERBOARD E4440-60001 se860a...
Page 218 Block Diagrams Overall Block Diagrams Chapter 9...
Page 219 E4446A/E4447A/E4448A OVERALL BLOCK DIAGRAM Note - POWER LEVELS BASED ON THESE SETTINGS: A27 ELECTRONIC ATTENUATOR NOTE: J4 and W19 321.4 MHz, -30 dBm A19 FL1 - 36 dBm OPTION B7J not present on E4447A AUX OUTPUT TO REAR PANEL Center Frequency - 50 MHz for Low band, 5 GHz for High band, 27 GHz LPF RYTHM 3 Hz - 2.85 GHz...
Page 220 Block Diagrams Overall Block Diagrams Chapter 9...
Page 221: Replaceable Parts Lists And Locations
Replaceable Parts Lists and Locations...
Page 222: What You Will Find In This Chapter
Replaceable Parts Lists and Locations What You Will Find in This Chapter What You Will Find in This Chapter The following information is found in this chapter: 1. Part number tables for assemblies, mechanical parts, cables, front panel connectors, and labels. 2.
Page 223 Replaceable Parts Lists and Locations What You Will Find in This Chapter Fig. 10-22 Option Driver Board and Cables page 284 Fig. 10-23 Option 122 or 140 Assembly and Cable Locations, and page 286 Option 124 W67 Cable Location Fig. 10-25 Cable Locations, Front End Driver E4440A, E4443A, page 290 E4445A Fig.
Page 224: Replaceable Parts
Replaceable Parts Lists and Locations Replaceable Parts Replaceable Parts Some of the assemblies listed in the following table are related to options that are available with the PSA Series Spectrum Analyzers. These options are described below. Option AYZ Adds external mixing...
Page 225 Replaceable Parts Lists and Locations Replaceable Parts Table 10-1 Assemblies Part E4440A E4443A E4445A E4446A E4447A E4448A Description Number AT1 2 dB Attenuator 0955-0301 AT2 3 dB Attenuator 0955-0246 (Option 123) AT3 3 dB Attenuator 08490-60010 (Option 110) AT4 4 dB Attenuator 0955-0583 (Option 110) A1 Flat Panel Display...
Page 226 Replaceable Parts Lists and Locations Replaceable Parts Table 10-1 Assemblies Part E4440A E4443A E4445A E4446A E4447A E4448A Description Number A7 Digital IF Assembly E4440-60206 (serial prefixes US/MY/SG 4611 and above. Also Option 122/140, 124) A8 Analog IF Assembly E4440-60256 A9 2nd LO/ Fan Control E4440-60431 E4440-60261 A10 3rd Converter Assy...
Page 227 Replaceable Parts Lists and Locations Replaceable Parts Table 10-1 Assemblies Part E4440A E4443A E4445A E4446A E4447A E4448A Description Number A14 Input Attenuator 33326-60009 (10 dB)/Switch) A15 Input Attenuator 33321-60058 (66 dB) A15 Input Attenuator 33325-60009 (60 dB) A18 YTO, 2.9 to 7 GHz E4440-60023 (Yig Tuned Oscillator) A19 RYTHM, 26.5 GHz...
Page 228 Replaceable Parts Lists and Locations Replaceable Parts Table 10-1 Assemblies Part E4440A E4443A E4445A E4446A E4447A E4448A Description Number A22 Preamp Assembly E4440-60444 (Option 1DS) A23 Floppy Disk Drive 0950-2782 A25 Motherboard E4440-60001 A26 CPU (Processor) E4406-60060 (includes standoffs; does not include A26A1 DRAM assy or A26A2 Flash Memory assy)
Page 229 Replaceable Parts Lists and Locations Replaceable Parts Table 10-1 Assemblies Part E4440A E4443A E4445A E4446A E4447A E4448A Description Number A34 Unpreselected 1NB7-8539 mm-Wave Mixer (Option 123) A35 Mixer Bias Board E4440-60254 (Option 123) (requires replacement of thermal pad, N1996-40018) A36 Microwave Preamp 0955-1663 26.5 GHz (Option 110)
Page 230 Replaceable Parts Lists and Locations Replaceable Parts Table 10-1 Assemblies Part E4440A E4443A E4445A E4446A E4447A E4448A Description Number FL4 High Pass Filter, 0955-1906 Opt 110 Opt 110 Opt 110 3 GHz Opt 123 Opt 123 Opt 123 SW1 RF Switch 1 33314-60013 Bottom Switch (Option 123)
Page 231 Replaceable Parts Lists and Locations Replaceable Parts Table 10-2 Mechanical Parts Description Part Number E4440A E4443A E4445A E4446A E4447A E4448A Dress Panel, rear E4440-00059 Disk Drive Board E4406-60014 Disk Drive Mount E4406-40006 E4440-00001 L-bracket, RF Main E4446-00003 RF Frame E4440-20165 Bracket, E4440-00024 Electronic Attenuator...
Page 232 Replaceable Parts Lists and Locations Replaceable Parts Table 10-2 Mechanical Parts Description Part Number E4440A E4443A E4445A E4446A E4447A E4448A Bracket, Switch E4440-00020 (Option 123) Shield, SW2 E4440-00055 (Top Switch) (Option 123) Washer, lock for BNC 2190-0068 connector mounting Screwlock, 0.312 x 4-40 0380-1858 Screwlock, SCSI 1252-5828...
Page 233 Replaceable Parts Lists and Locations Replaceable Parts Table 10-2 Mechanical Parts Description Part Number E4440A E4443A E4445A E4446A E4447A E4448A Spring-Wire Frame (for 1460-1345 two front bottom feet) Front Frame Assy. E4406-60155 (includes EMI gaskets and “trim strips”) Rear Frame Assy. E4406-60154 (includes EMI gaskets) Front Dress Panel...
Page 234 Replaceable Parts Lists and Locations Replaceable Parts Table 10-2 Mechanical Parts Description Part Number E4440A E4443A E4445A E4446A E4447A E4448A Display Pressure Plate E4406-00037 Display Bezel Assembly E4440-60081 (includes left overlay label, but does not include nameplate) Mid Web E4406-20109 Spacer for switches 0380-1402 (Option 123)
Page 235 Replaceable Parts Lists and Locations Replaceable Parts Table 10-2 Mechanical Parts Description Part Number E4440A E4443A E4445A E4446A E4447A E4448A Screw, M3 x 0.5 20 MM 0515-1410 (Option 110) Screw M3 X 0.5 16 MM 0515-0375 (Option 123) Attaches SW3 to to bracket Screw M3.5 X 0.6 0515-0458...
Page 236 Replaceable Parts Lists and Locations Replaceable Parts Table 10-3 Cables Description Part E4440A E4443A E4445A E4446A E4447A E4448A Number W1 Cable (5), coax, Front E4406-60139 Panel External Trigger to A8 Analog IF Assy. P1 W2 Cable, ribbon 100 pin, E4440-60075 Front Panel W5 Cable Flat flex, 8120-8480...
Page 237 Replaceable Parts Lists and Locations Replaceable Parts Table 10-3 Cables Description Part E4440A E4443A E4445A E4446A E4447A E4448A Number W11 Cable (3), coax, 21.4 8120-5021 MHz from A10 3rd Converter J5 to A8 Analog IF, J13 W12 Cable (6), coax, 8120-5053 TRIGGER IN from rear panel to A8 Analog IF, P4...
Page 238 Replaceable Parts Lists and Locations Replaceable Parts Table 10-3 Cables Description Part E4440A E4443A E4445A E4446A E4447A E4448A Number W22 Cable (70), coax, Ext 8120-5053 Ref In from rear panel to A11 Reference Assy P1 W23 Cable, coax, 28V to 8121-0958 rear panel from A13 Front End Driver...
Page 239 Replaceable Parts Lists and Locations Replaceable Parts Table 10-3 Cables Description Part E4440A E4443A E4445A E4446A E4447A E4448A Number W35 Cable, semi-rigid, E4440-20083 YTO Output A18 YTO to A21 SLODA W35 Cable, semi-rigid, E4446-20033 YTO Output A18 YTO to A21 FELOMA W36 Cable, semi-rigid, E4440-20071 A19 RYTHM to...
Page 240 Replaceable Parts Lists and Locations Replaceable Parts Table 10-3 Cables Description Part E4440A E4443A E4445A E4446A E4447A E4448A Number W43 Cable, semi-rigid, AT1 E4446-20049 to FELOMA J2 (SBTX) W44 Cable (9), coax, E4440-60374 IF IN from front-panel to A10 3rd Converter J3 (Option AYZ) W45 Cable, semi-rigid, E4440-20095...
Page 241 Replaceable Parts Lists and Locations Replaceable Parts Table 10-3 Cables Description Part E4440A E4443A E4445A E4446A E4447A E4448A Number W52 Cable, semi-rigid, E4440-20109 A27 electronic attenuator to E4446-20040 FL1, 3 GHz Low Pass Filter (Option B7J) W53 Cable ribbon, E4440-60078 Electronic Attenuator control from A13 Front End Driver to A27 Electronic...
Page 242 Replaceable Parts Lists and Locations Replaceable Parts Table 10-3 Cables Description Part E4440A E4443A E4445A E4446A E4447A E4448A Number W64 Cable (60), coax, 8121-1007 WB IF CA:L from A31 WB Analog IF to A10 3rd Converter J6 (Option 122 or 140) W65 Cable (40), coax, E4440-60343 321.4 MHz IF from...
Page 243 Replaceable Parts Lists and Locations Replaceable Parts Table 10-3 Cables Description Part E4440A E4443A E4445A E4446A E4447A E4448A Number W77 Cable (51), coax, 8121-0705 321.4 MHz IF OUT, from A33 Option card J5 to rear panel (Option H70) W78 Cable, semi-rigid, E4446-20047 FL2 to FL3 (Option 122 or 140)
Page 244 Replaceable Parts Lists and Locations Replaceable Parts Table 10-3 Cables Description Part E4440A E4443A E4445A E4446A E4447A E4448A Number W87 Cable (2), coax, E4440-60373 RYTHM t o Switch 2 (top switch) port 2 (Option 123) W88 Cable, semi-rigid, E4440-20087 SLODA LO Out to cable W83 Mixer LO In (Option 123) W89, Cable, coax,...
Page 245 Replaceable Parts Lists and Locations Replaceable Parts Table 10-3 Cables Description Part E4440A E4443A E4445A E4446A E4447A E4448A Number W97, not assigned W98, Cable, semi-rigid, E4446-20074 LO In to Unpreselected Mixer from W46/3 dB pad (Option 123) W99, Cable, semi-rigid, E4446-20318 Unpreselected mixer to switch 5 (bottom switch)
Page 246 Replaceable Parts Lists and Locations Replaceable Parts Table 10-3 Cables Description Part E4440A E4443A E4445A E4446A E4447A E4448A Number W107, Cable, semi-rigid, E4446-20072 Switch 4 port 4 to W34 cable to RHYTHM/SBTX (Option 110, for instruments that do not have Opt 123) W108, Cable, coax, 8121-1432 Front Panel Audio In to...
Page 247 Replaceable Parts Lists and Locations Replaceable Parts Table 10-4 Front Panel Connectors and Mounting Hardware Description Part Number E4440A E4443A E4445A E4446A E4447A E4448A J1 Input Connector, 08559-60002 Type N Bracket, Type N Input E4440-20185 Input Connector Nut, 2950-0132 Type N Input Input Connector 2190-0104 Washer, Type N Input...
Page 248 Replaceable Parts Lists and Locations Replaceable Parts Table 10-5 Labels Description Part Number E4440A E4443A E4445A E4446A E4447A E4448A Name Plate, E4440A E4440-80003 Name Plate, E4443A E4443-80001 Name Plate, E4445A E4445-80001 Name Plate, E4446A E4446-80001 Name Plate, E4447A E4447-80001 Name Plate, E4448A E4448-80001 Line Label E4440-80006...
Page 249: Hardware
Replaceable Parts Lists and Locations Hardware Hardware Figure 10-1 External Hardware Agilent Part Item Description Number Strap Handle Assembly E4440-60066 Bottom “foot” 5041-9167 Screw M4x0.7 25mm-LG 0515-1619 Rear “foot” 5041-9611 Shield, magnetic (used inside instrument E4440-00029 cover, 2 places) Spring-Wire Frame (for two front bottom 1460-1345 feet) Key lock for bottom instrument feet...
Page 250 Replaceable Parts Lists and Locations Hardware Figure 10-2 Top Brace Hardware Agilent Part Item Description Number Top Brace E4440-00013 Screw M3x0.5 8mm-LG 0515-0372 (Crest Washer-Pan Head-TORX) Screw M3x0.5 6mm-LG (Flat Head) 0515-1227 Chapter 10...
Page 251 Replaceable Parts Lists and Locations Hardware Figure 10-3 Front Frame Hardware Agilent Part Item Description Number Screw M3x0.5 8mm-LG 0515-0372 (Crest Washer-Pan Head-TORX) Front Frame Assembly page 292 W2 Cable, ribbon 100 pin, Front Panel E4440-60075 W1 Cable (5), coax, Front Panel External E4406-60139 Trigger to A8 Analog IF Assy.
Page 252 Replaceable Parts Lists and Locations Hardware Figure 10-4 Major Assemblies Chapter 10...
Page 253 Replaceable Parts Lists and Locations Hardware Item Description Agilent Part Number RF Section page 254 E4440-60259 A13 Front End Driver Board E4440-60185 A12 Synthesizer Assembly A11 Reference Assembly E4440-60225 E4440-60261 A10 3rd Converter Assembly A9 2nd LO/ Fan Control E4440-60431 A8 Analog IF Assembly E4440-60256 A7 Digital IF Assembly (serial prefixes...
Page 254 Replaceable Parts Lists and Locations Hardware Figure 10-5 RF Section E4440A, E4443A, E4445A - Standard Chapter 10...
Page 255 Replaceable Parts Lists and Locations Hardware Item Description Agilent Part Number J1 Input Connector, Type N 08559-60002 A14 Input Attenuator (4 dB)/Switch/Block cap) 33360-60003 A15 Input Attenuator (66 dB) 33321-60058 L-bracket, RF Main E4440-00001 A18 YTO, 2.9 to 7 GHz (Yig Tuned Oscillator) E4440-60023 A19 RYTHM, 26.5 GHz (Routing YIG Tuned 5087-7070...
Page 256 Replaceable Parts Lists and Locations Hardware Figure 10-6 YTO Assembly Chapter 10...
Page 257 Replaceable Parts Lists and Locations Hardware Item Description Agilent Part Number Screw, M3 x 0.58 MM long 0515-0372 Lid, A18 YTO E4440-00019 A18 YTO, 2.9 to 7 GHz (Yig Tuned Oscillator) E4440-60023 Shield, A18 YTO E4440-00018 Grommet, A18 YTO (2 each) 0400-0333 Shoulder Washers, A18 YTO (2 each) 5022-0179...
Page 258 Replaceable Parts Lists and Locations Hardware Figure 10-7 RF Input Connector E4440A, E4443A, E4445A Chapter 10...
Page 259 Replaceable Parts Lists and Locations Hardware Agilent Part Item Description Number J1 Input Connector, Type N 08559-60002 J1 Input Connector, 3.5 mm (m) (Option 08673-60040 BAB) -W7 Cable, semi-rigid (with ferrites), For E4440-20067 standard “N” type RF Input to A14 Attenuator E4440-20099 -W7 Cable, semi-rigid, For Option BAB 3.5...
Page 260 Replaceable Parts Lists and Locations Hardware Figure 10-8 RF Section Cables E4440A, E4443A, E4445A - Standard Chapter 10...
Page 261 Replaceable Parts Lists and Locations Hardware Reference Description Agilent Part Designator Number W7 Cable, semi-rigid (with ferrites), For standard “N” type RF E4440-20067 Input to A14 Attenuator W8 Cable, semi-rigid (with ferrites), A14 attenuator to A15 E4440-20068 attenuator W9 Cable, semi-rigid, A15 Attenuator to A19 RYTHM E4440-20069 W15 Cable, semi-rigid, A9 2nd LO, J10 to Lowband, J5 E4440-20084...
Page 262 Replaceable Parts Lists and Locations Hardware Figure 10-9 RF Section and Cables E4440A, E4443A, E4445A - (Options 1DS, BAB, B7J, and AYZ) Figure 10-10 Option 122 or 140 RF Cable Locations Chapter 10...
Page 263 Replaceable Parts Lists and Locations Hardware This table corresponds to Figure 10-9 Figure 10-10. Reference Description Agilent Part Designator Number J1 Input Connector, 3.5 mm (m) (Option BAB) 08673-60040 1st LO OUT connector SMA (Option AYZ) 1250-1666 IF INPUT connector SMA (Option AYZ) 1250-1666 A22 Preamp Assembly (Option 1DS) E4440-60444...
Page 264 Replaceable Parts Lists and Locations Hardware Figure 10-11 E4440A, E4443A, E4445A Option 123 Assemblies and Cable Locations Figure 10-12 E4440A, E4443A, E4445A Option 123 Assemblies and Cable Locations Chapter 10...
Page 265 Replaceable Parts Lists and Locations Hardware Reference Description Agilent Part Designator Number W8 Cable, semi-rigid (with ferrites), A14 attenuator to A15 E4440-20068 attenuator W80 Cable, semi-rigid, Input Attenuator to Switch 1 (Option E4440-20090 123) W81 Cable, semi-rigid (with ferrites), Switch 1 (bottom switch) E4440-20091 port 2 to RYTHM input (Option 123) W82 Cable, semi-rigid, Switch 1 (bottom switch) port 1 to Mixer...
Page 266 Replaceable Parts Lists and Locations Hardware Figure 10-13 E4440A, E4443A, E4445A - Option 110 (with Option 123) Reference Description Agilent Part Designator Number A36 Microwave Preamp 26.5 GHz (Option 110) 0955-1663 FL4 High Pass Filter, 3 GHz (Option 110 and 123 combination) 0955-1906 (not shown, attaches to...
Page 267 Replaceable Parts Lists and Locations Hardware Chapter 10...
Page 268 Replaceable Parts Lists and Locations Hardware Figure 10-14 RF Section E4446A, E4447A, E4448A - Standard Chapter 10...
Page 269 Replaceable Parts Lists and Locations Hardware Item Description Agilent Part Number J1 Input Connector, 2.4 mm 5064-3970 A14 Input Attenuator (10 dB)/Switch) 33326-60009 A15 Input Attenuator (60 dB) 33325-60009 L-bracket, RF Main E4446-00003 A18 YTO, 2.9 to 7 GHz (Yig Tuned Oscillator) E4440-60023 A19 SBTX/RYTHM Assembly, 44 GHz 5087-7184...
Page 270 Replaceable Parts Lists and Locations Hardware Figure 10-15 Options 110 and 123 E4446A, E4447A, E4448A Chapter 11, “Assembly Replacement Procedures,” on page 305 NOTE this service guide for views of Option 110 only or Option 123 only) Chapter 10...
Page 271 Replaceable Parts Lists and Locations Hardware Item Description Agilent Part Number A34 Unpreselected mm-Wave Mixer (Option 1NB7-8539 123) A35 Mixer Bias Board (Option 123) (requires E4440-60254 replacement of thermal pad, N1996-40018) SW4 Millimeter XFER Switch 50 GHz (top 87222-60015 switch) (Option 110) SW5 Switch, Millimeter (bottom switch) 87222-60015 (Option 123)
Page 272 Replaceable Parts Lists and Locations Hardware Figure 10-16 Options 110 and 123 E4446A, E4447A, E4448A (Rear View) Chapter 11, “Assembly Replacement Procedures,” on page 305 NOTE this service guide for views of Option 110 only or Option 123 only) Chapter 10...
Page 273 Replaceable Parts Lists and Locations Hardware Item Description Agilent Part Number A36 Millimeter Preamp 50 GHz (Option 110) 0955-1617 AT3 3 dB Attenuator (Option 110) 08490-60010 SW3 Coaxial Switch (Option 123) N1810-60052 SW4 Millimeter XFER Switch 50 GHz (top 87222-60015 switch) (Option 110) W89, Cable, coax, Switch 3 bottom port to E4440-60373...
Page 274 Replaceable Parts Lists and Locations Hardware Figure 10-17 RF Input Connector and Attenuators E4446A, E4447A, E4448A Chapter 10...
Page 275 Replaceable Parts Lists and Locations Hardware Reference Description Agilent Part Designator Number Bracket, 2.4 mm RF Input E4446-20004 J1 Input Connector, 2.4 mm 5064-3970 W7 Cable, semi-rigid, For standard 2.4mm RF Input to A14 E4446-20020 Attenuator W8 Cable, semi-rigid (with ferrites), A14 attenuator to A15 E4446-20021 attenuator W20 Cable (50), coax, 50 MHz Cal signal from A10 3rd...
Page 276 Replaceable Parts Lists and Locations Hardware Figure 10-18 RF Section Cable Locations E4446A, E4447A, E4448A - Standard Chapter 10...
Page 277 Replaceable Parts Lists and Locations Hardware Reference Description Agilent Part Designator Number W7 Cable, semi-rigid, For standard 2.4mm RF Input to A14 E4446-20020 Attenuator W8 Cable, semi-rigid (with ferrites), A14 attenuator to A15 E4446-20021 attenuator W15 Cable, semi-rigid, A9 2nd LO, J10 to Lowband, J5 E4440-20084 W18 Cable (7), coax (with ferrites), 321.4 MHz A20 Lowband E4440-60372...
Page 278 Replaceable Parts Lists and Locations Hardware Figure 10-19 SBTX Driver Board Ribbon Cable Locations E4446A, E4447A, E4448A Chapter 10...
Page 279 Replaceable Parts Lists and Locations Hardware Reference Description Agilent Part Designator Number W68 Cable, ribbon, SBTX Tower Control, A29 SBTX Driver to E4446-60008 A19 SBTX/RYTHM W69 Cable, ribbon, 20 pin, SBTX Digital Control, A29 SBTX E4446-60009 Driver to A13 Front End Driver W70 Cable, ribbon, 14 pin, SBTX Power, A29 SBTX Driver to E4446-60010 A13 Front End Driver...
Page 280 Replaceable Parts Lists and Locations Hardware Figure 10-20 RF Section Assembly and Cable Locations E4446A, E4447A, E4448A - (Options 1DS, B7J, and AYZ) Chapter 10...
Page 281 Replaceable Parts Lists and Locations Hardware Reference Description Agilent Part Designator Number 1st LO OUT connector SMA (Option AYZ) 1250-1666 IF INPUT connector SMA (Option AYZ) 1250-1666 A22 Preamp Assembly (Option 1DS) E4440-60444 A27 Electronic Attenuator (Option B7J) E4440-60456 W45 Cable, semi-rigid, LO OUT from front-panel to W46 E4440-20095 (Option AYZ) W46 Cable, semi-rigid, LO OUT extension cable from A21...
Page 282 Replaceable Parts Lists and Locations Hardware Figure 10-21 Vertical Board Assembly Cables See Cable Locations A12W2 Front End Driver se832a Chapter 10...
Page 283 Replaceable Parts Lists and Locations Hardware Reference Description Agilent Part Designator Number W1 Cable (5), coax, Front Panel External Trigger to A8 Analog E4406-60139 IF Assy. P1 W10 Cable (8), coax, 7.5 MHz from A8 Analog IF P2, to A7 8120-5022 Digital IF, P1 W11 Cable (3), coax, 21.4 MHz from A10 3rd Converter J5 to A8...
Page 284 Replaceable Parts Lists and Locations Hardware Figure 10-22 Option Driver Board and Cables Chapter 10...
Page 285 Replaceable Parts Lists and Locations Hardware Reference Description Agilent Part Designator Number W91, Cable, ribbon, Switch Control, Option Driver Assy J3 to E4440-60455 SW4 (top switch) (Option 110) (E4446A, E4447A, E4448A) W92, Cable, ribbon, Switch Control Option Driver Assy J8 to E4440-60455 SW5 (bottom switch) (Option 123) W95, Cable, ribbon, Mixer Bias board control.
Page 286 Replaceable Parts Lists and Locations Hardware Figure 10-23 Option 122 or 140 Assembly and Cable Locations, and Option 124 W67 Cable Location Chapter 10...
Page 287 Replaceable Parts Lists and Locations Hardware Reference Description Agilent Part Designator Number A10 3rd Converter Assembly E4440-60261 A31 Wideband Analog IF Assembly (Option 122 or 140) E4440-60215 A32 Wideband Digital IF Assembly (Option 122 or 140) E4440-60262 W60 Cable, ribbon, ADC Data from A31 WB Analog IF to A32 E4440-60341 WB Digital IF (Option 122 or 140) W61 Cable (65), coax, 100 MHz Ref from A11 Reference...
Page 288 Replaceable Parts Lists and Locations Hardware Figure 10-24 Option 107 Audio Input Assembly and Cable Locations Chapter 10...
Page 289 Replaceable Parts Lists and Locations Hardware Reference Description Agilent Part Designator Number A8 Analog IF Assembly E4440-60256 A37 Audio Digitizer Assembly (Option 107) E4440-60264 A39 USB/Memory Board (cover plate not attached; includes E4440-60252 memory card) (Option 111, 115, 117) W108 W108, Cable, coax, Front Panel Audio In to Audio Board Assy 8121-1432 (Option 107)
Page 290 Replaceable Parts Lists and Locations Hardware Figure 10-25 Cable Locations, Front End Driver E4440A, E4443A, E4445A Reference Description Agilent Part Designator Number W23 Cable, coax, 28V to rear panel from A13 Front End Driver 8121-0958 W25 Cable, ribbon, YTO Control E4440-60069 W26 Cable, ribbon, RYTHM Control E4440-60070...
Page 291 Replaceable Parts Lists and Locations Hardware Figure 10-26 Cable Locations, Front End Driver E4446A, E4447A, E4448A Reference Description Agilent Part Designator Number W23 Cable, coax, 28V to rear panel from A13 Front End Driver 8121-0958 W25 Cable, ribbon, YTO Control E4440-60069 W29 Cable, ribbon, A13 Front End Driver to A14 Attenuator A E4440-60071...
Page 292 Replaceable Parts Lists and Locations Hardware Figure 10-27 Front Panel Parts Chapter 10...
Page 293 Replaceable Parts Lists and Locations Hardware Item Description Agilent Part Number Display Assembly (see Figure 10-29 Figure 10-30) Front Shield E4440-00050 A2 Front Panel Interface (Includes Inverter E4440-63266 Boards + cable) A28 Audio Out Board E4406-60025 W1 Cable (5), coax, Front Panel External E4406-60139 Trigger to A8 Analog IF Assy.
Page 294 Replaceable Parts Lists and Locations Hardware Figure 10-28 Front Panel Shield Hardware Agilent Part Item Description Number Screw M3x0.5 8mm-LG 0515-0372 (Crest Washer-Pan Head-TORX) Front Shield E4440-00050 Chapter 10...
Page 295 Replaceable Parts Lists and Locations Hardware Figure 10-29 Front Panel Assemblies Item Description Agilent Part Number A2 Front Panel Interface (Includes Inverter Boards + E4440-63266 cable) A2A1 and A2A2 Inverter Boards 0950-3379 (under Inverter Shield) W5 Cable Flat flex, Front Panel Interface to display 8121-1419 converter board (for serial prefix US/MY/SG 4611 and above)
Page 296 Replaceable Parts Lists and Locations Hardware Figure 10-30 Display Parts Agilent Part Item Description Number Display EMI Filter 1000-1001 Display Mount (serial prefix US/MY/SG E4406-40013 4611 and above) A1 Flat Panel Display (serial prefixes 2090-0897 US/MY/SG 4611 and above) See Figure 10-29 Chapter 10...
Page 297 Replaceable Parts Lists and Locations Hardware Figure 10-31 Disk Drive Parts Agilent Part Item Description Number 1 and 4 Disk Drive Mount E4406-40006 A23 Floppy Disk Drive 0950-2782 Disk Drive Board E4406-60014 Chapter 10...
Page 298 Replaceable Parts Lists and Locations Hardware Figure 10-32 Rear Frame Hardware Chapter 10...
Page 299 Replaceable Parts Lists and Locations Hardware Agilent Part Item Description Number Screw M3x0.5 8mm-LG 0515-0372 (Crest Washer-Pan Head-TORX) W47 Cable (97), coax, Preselector Tune Out 8121-0153 A13 Front End Driver to Rear Panel Dress Panel, rear E4440-00059 W22 Cable (70), coax, Ext Ref In from rear 8120-5053 panel to A11 Reference Assy P1 W21 Cable (90), coax, 10 MHz Out from A11...
Page 300 Replaceable Parts Lists and Locations Hardware Figure 10-33 Mid Web Parts Figure 10-34 Fan Guard Chapter 10...
Page 301 Replaceable Parts Lists and Locations Hardware This table corresponds to Figure 10-33 Figure 10-34. Agilent Part Item Description Number Screw M3x0.5 8mm-LG 0515-0372 (Crest Washer-Pan Head-TORX) Mid Web E4406-20109 B1, B2, or B3 Fan (fan, wires/connector + E4406-60159 EMI disk) Rivet, fan mounting 0361-1272 Fan Guard...
Page 302 Replaceable Parts Lists and Locations Hardware Figure 10-35 Cable Hold Down Agilent Part Item Description Number Cable hold down (on Midweb) 5022-6135 Screw M3x0.5 8mm-LG 0515-0372 (Crest Washer-Pan Head-TORX) Chapter 10...
Page 303 Replaceable Parts Lists and Locations Hardware Figure 10-36 CPU Parts Agilent Part Item Description Number A26A1 128M DRAM Assy (includes replacement E4406-60053 standoffs) A26A2 64 MB Flash Memory Replacement Kit E4440-60094 (includes replacement standoffs) A26 CPU (Processor) (includes standoffs; does not E4406-60060 include A26A1 DRAM assy or A26A2 Flash Memory assy)
Page 304 Replaceable Parts Lists and Locations Hardware Chapter 10...
Page 305: Assembly Replacement Procedures
Assembly Replacement Procedures...
Page 306: What You Will Find In This Chapter
Assembly Replacement Procedures What You Will Find in This Chapter What You Will Find in This Chapter Procedures in this chapter enable you to locate, remove, and replace the major assemblies in your instrument. Refer to Chapter 10 , “Replaceable Parts Lists and Locations,” for part numbers, assembly descriptions, and ordering information.
Page 307: Before Starting
Assembly Replacement Procedures What You Will Find in This Chapter • A26 CPU Assembly ..............page 385 • A26A1 DRAM and A26A2 Flash Boards ......page 388 • Rear Frame................page 390 • RF Input Connector .............page 393 • Front Frame Subassemblies..........page 395 A1 LCD Display, Backlights, and Filter ......page 398 A2 Front Panel Interface Board...
Page 308: Tools You Will Need
Assembly Replacement Procedures Tools you will need Tools you will need Figure 11-1 TORX Tool Description Agilent Part Number TORX Hand Driver - Size T10 8710-1623 TORX Hand Driver - Size T20 8710-1615 Pozidriv screwdriver - #1 8710-0899 flat blade screwdriver - 0.01 in. thick blade 8730-0008 9/16 inch nut driver 8720-0008...
Page 309: Major Assembly Locations
Assembly Replacement Procedures Major Assembly Locations Major Assembly Locations Figure 11-2 Major Assemblies Item Description Item Description RF Section A7 Digital IF Assembly A13 Front End Driver Board A38 Option Driver Assembly (Option 110/123) A12 LO Synthesizer Assembly A26 CPU Assembly A11 Reference Assembly A31 Wideband Analog IF Assembly (Option 122 or 140)
Page 310: Instrument Outer Case
Assembly Replacement Procedures Instrument Outer Case Instrument Outer Case If the instrument is placed on its face during any of the following CAUTION procedures, be sure to use a soft surface or soft cloth to avoid damage to the front panel, keys, or input connector. Removal 1.
Page 311: Replacement
Assembly Replacement Procedures Instrument Outer Case Replacement 1. Disconnect the instrument from ac power. 2. Slide the instrument cover back onto the deck from the rear. The seam on the cover should be on the bottom. Be sure the cover seats into the gasket groove in the front frame.
Page 312: Top Brace
Assembly Replacement Procedures Top Brace Top Brace Removal 1. If you haven’t already done so, remove the instrument outer case. Refer to the “Instrument Outer Case” removal procedure. 2. Using the T-10 driver, remove the top screws (3) (one screw is under the security label) and the side screws (2) attaching the top brace (1) to the deck.
Page 313: Replacement
Assembly Replacement Procedures Top Brace Replacement 1. Carefully position the top brace on the deck. There is an alignment pin on the mid web/fan assembly that should match up with the alignment hole on the top brace. Make sure that no coaxial cables will get pinched underneath the brace.
Page 314: Front Frame
Assembly Replacement Procedures Front Frame Front Frame For most service situations, the front frame assembly can be “dropped” from the deck without disconnecting any cables. Refer to the section “Drop the Front Frame” . To completely remove the front frame, continue with the “Removal”...
Page 315: Removal
Assembly Replacement Procedures Front Frame Removal 1. Using a 9/16” socket drive, remove the nut securing the Ext Trigger BNC connector. Take care to not scratch the front dress panel. Input 2. Refer to Figure 11-5. Disconnect the ribbon cable (3) from the A2 front panel interface board.
Page 316: Replacement
Assembly Replacement Procedures Front Frame Replacement 1. Place the front frame assembly in front of the deck. 2. Connect the ribbon cable (3) to the A2 front panel interface board. 3. Feed the coaxial cable BNC connector through the External Trigger hole in the front frame, matching the “D”...
Page 317: Rf Section
Assembly Replacement Procedures RF Section E4440A, E4443A, E4445A RF Section E4440A, E4443A, E4445A All of the individual components of the RF section can be removed with the RF section in place in the instrument. If necessary for some service situations, the RF section can be removed as a unit to make it easier to replace an individual device.
Page 318 Assembly Replacement Procedures RF Section E4440A, E4443A, E4445A Figure 11-6 RF Section Removal Replacement 1. Position the RF section in the slots in the deck. Gently slide it down, making sure that no cables get caught. 2. Using the T-10 driver, replace the 4 screws. Torque to 9 inch pounds. 3.
Page 319 Assembly Replacement Procedures RF Section E4440A, E4443A, E4445A Figure 11-7 RF Section Ribbon Cable Locations - E4440A, E4443A, E4445A Chapter 11...
Page 320: Rf Assemblies
Assembly Replacement Procedures RF Section E4440A, E4443A, E4445A RF Assemblies E4440A, E4443A, E4445A Figure 11-8 RF Section Assemblies - Standard Item Description Item Description J1 Input Connector, Type N A20 Low Band Assembly A14 Attenuator/Switch FL1 Low Pass Filter, 3 GHz A21 SLODA A15 Attenuator L-bracket, RF Main...
Page 321 Assembly Replacement Procedures RF Section E4440A, E4443A, E4445A Figure 11-9 RF Section Cables - Standard Chapter 11...
Page 322: A18 Yto And A19 Rythm
Assembly Replacement Procedures RF Section E4440A, E4443A, E4445A Figure 11-10 RF Section Hardware A18 YTO and A19 RYTHM Removal 1. Refer to Figure 11-9. Remove the semi-rigid cables, W9, W35, W36, and W38. 2. Remove the ribbon cables attached to the YTO and RYTHM. 3.
Page 323: A21 Sloda
Assembly Replacement Procedures RF Section E4440A, E4443A, E4445A 5. To remove the YTO, remove the two bottom screws that attach it to the bracket. To remove the RYTHM, remove the four screws. When you remove the two screws that attach the YTO to the bracket, CAUTION the YTO will become detached from the YTO can.
Page 324: Fl2 Band Pass Filter
Assembly Replacement Procedures RF Section E4440A, E4443A, E4445A 2. Once the semi-rigid cables are loosened, FL1 can be removed from the RF section by pulling it from the clamps. Replacement 1. Snap FL1 into the clamps on the RF section. 2.
Page 325: Rf Section Option Assemblies
Assembly Replacement Procedures RF Section E4440A, E4443A, E4445A RF Section Option Assemblies E4440A, E4443A, E4445A Figure 11-11 Preamplifier and Electronic Attenuator Assemblies and Cable Locations Chapter 11...
Page 326: A22 Preamplifier
Assembly Replacement Procedures RF Section E4440A, E4443A, E4445A A22 Preamplifier Removal 1. Refer to Figure 11-11. Remove the semi-rigid cables W48 and W50. 2. Refer to Figure 11-10. Using the T-10 driver, remove the 2 screws (5). 3. The preamplifier assembly can now be removed from the RF section. Replacement 1.
Page 327: Option 110 Assemblies
Assembly Replacement Procedures RF Section E4440A, E4443A, E4445A Option 110 Assemblies (E4440A, E4443A, E4445A) Figure 11-12 Option 110 Assemblies and Cables Figure 11-13 Option Driver Board Cables Chapter 11...
Page 328 Assembly Replacement Procedures RF Section E4440A, E4443A, E4445A A36 Preamplifier and SW6 To remove either the A36 Preamplifier or SW6 switch, it will be necessary to drop the front frame. To drop the front frame with Option 110 installed, follow these steps: 1.
Page 329: A36 Preamplifier
Assembly Replacement Procedures RF Section E4440A, E4443A, E4445A Option 110 A36 Preamplifier Removal and Replacement 1. Refer to Figure 11-14. To remove A36, remove cables W112 and W113. 2. Remove the bracket from the front panel by removing the four screws (1) and lifting the assembly from the front frame.
Page 330: Option 123 Assemblies
Assembly Replacement Procedures RF Section E4440A, E4443A, E4445A Option 123 Assemblies Figure 11-16 Option 123 Assembly and Cable Locations Figure 11-17 Option 123 Assembly and Cable Locations Chapter 11...
Page 331 Assembly Replacement Procedures RF Section E4440A, E4443A, E4445A Option 123 Dual Mixer Removal 1. Drop the front frame. See page 314 for instructions. 2. Refer to Figure 11-16. Remove cables W82, W83, and W84. 3. Refer to Figure 11-18. Remove the grey and violet wires from the Dual Mixer connector pins.
Page 332 Assembly Replacement Procedures RF Section E4440A, E4443A, E4445A Option 123 Switches Figure 11-19 Option 123 Switch Wiring Top Switch Removal 1. Drop the front frame. See page 314 for instructions. 2. Note the locations of the soldered wires on the switch terminals, particularity the black wires.
Page 333 Assembly Replacement Procedures RF Section E4440A, E4443A, E4445A Top Switch Replacement The replacement switch will not have the metal EMI shield installed. NOTE The shield is p/n E4440-00055. This shield is only used on the top switch. 1. Position the standoffs over the bottom switch mounting holes. Position the replacement top switch with the label up, and install the mounting screws.
Page 334 Assembly Replacement Procedures RF Section E4440A, E4443A, E4445A Bottom Switch Removal 1. Drop the front frame. See page 314 for instructions. 2. Refer to Figure 11-17. Remove cables W84, W86, and W87 from the top switch. Note that two of the cables have identification bands that correspond to the connector designator 1, or 2, printed on the switch.
Page 335 Assembly Replacement Procedures RF Section E4440A, E4443A, E4445A then unsolder the jumper wires from the bottom switch. Avoid damage to the wires since they have little service length. 9. Remove the switch mounting screws being careful to keep track of the two standoffs between the switches.
Page 336: Rf Section
Assembly Replacement Procedures RF Section E4446A, E4447A, E4448A RF Section E4446A, E4447A, E4448A Most of the individual components of the RF section can be removed with the RF section in place in the instrument. If necessary for some service situations, the RF section can be removed as a unit to make it easier to replace an individual device.
Page 337 Assembly Replacement Procedures RF Section E4446A, E4447A, E4448A Figure 11-21 RF Section Removal Chapter 11...
Page 338 Assembly Replacement Procedures RF Section E4446A, E4447A, E4448A Replacement 1. Position the RF section in the slots in the deck. Gently slide it down, making sure that no cables get caught. 2. Using the T-10 driver, replace the 4 screws. Torque to 9 inch pounds. 3.
Page 339: Rf Assemblies
Assembly Replacement Procedures RF Section E4446A, E4447A, E4448A RF Assemblies E4446A, E4447A, E4448A Figure 11-23 RF Section Assemblies - Standard Item Description Item Description RF Input Connector FL 1 Low Pass Filter, 3 GHz A14 Attenuator/Switch A21 FELOMA (Freq. Extended LO Multiplying Amp) A15 Attenuator FL 2 Band Pass Filter, 3.9124 GHz L-bracket, RF Main...
Page 340 Assembly Replacement Procedures RF Section E4446A, E4447A, E4448A Figure 11-24 RF Section Cables - Standard Chapter 11...
Page 341: A18 Yto And A19 Sbtx/Rythm
Assembly Replacement Procedures RF Section E4446A, E4447A, E4448A Figure 11-25 RF Section Hardware A18 YTO and A19 SBTX/RYTHM Removal 1. Refer to Figure 11-24. Remove the semi-rigid cables, W33, W35, W36, and W38. 2. Remove the ribbon cables attached to the YTO and SBTX/RYTHM. 3.
Page 342: A21 Feloma
Assembly Replacement Procedures RF Section E4446A, E4447A, E4448A 5. To remove the YTO, remove the two bottom screws that attach it to the bracket. Do not remove the RYTHM from the bracket. When you remove the two screws that attach the YTO to the bracket, CAUTION the YTO will become detached from the YTO can.
Page 343: Fl2 Band Pass Filter
Assembly Replacement Procedures RF Section E4446A, E4447A, E4448A 2. Once the semi-rigid cables are loosened, FL1 can be removed from the RF section by pulling it from the clamps. Replacement 1. Snap FL1 into the clamps on the RF section. 2.
Page 344: A20 Lowband (E4447A Only)
Assembly Replacement Procedures RF Section E4446A, E4447A, E4448A A20 Lowband (E4447A only) Removal 1. Remove the A13 Front End Driver, A12 Synthesizer, and A11 Reference assemblies. The cable hold down wire will need to be removed in order to remove the Synthesizer assembly. 2.
Page 345: A29 Sbtx Driver Board
Assembly Replacement Procedures RF Section E4446A, E4447A, E4448A A29 SBTX Driver Board Removal 1. Remove the ribbon cables attached to the SBTX driver board. 2. The SBTX Driver board can now be removed from the RF section by sliding it out while pulling up on the spring tab. Replacement 1.
Page 346: Rf Section Option Assemblies
Assembly Replacement Procedures RF Section E4446A, E4447A, E4448A RF Section Option Assemblies E4446A, E4447A, E4448A Figure 11-26 Chapter 11...
Page 347: A22 Preamplifier
Assembly Replacement Procedures RF Section E4446A, E4447A, E4448A A22 Preamplifier Removal 1. Refer to Figure 11-26. Remove the semi-rigid cables W48 and W50. 2. Refer to Figure 11-25. Using the T-10 driver, remove the 2 screws (5). 3. The preamplifier assembly can now be removed from the RF section. Replacement 1.
Page 348: Option 110 Assemblies
Assembly Replacement Procedures RF Section E4446A, E4447A, E4448A Option 110 Assemblies E4446A, E4447A, E4448A Figure 11-27 Option 110 Assembly and Cable Locations Chapter 11...
Page 349 Assembly Replacement Procedures RF Section E4446A, E4447A, E4448A Figure 11-28 Option 110 Front View Option 110 A36 Preamplifier Removal 1. Drop the front frame. See page 314 for instructions. 2. Refer to Figure 11-27. Remove cables W103, and W104 with AT3. Remove all the wires from the A36 Preamplifier.
Page 350 Assembly Replacement Procedures RF Section E4446A, E4447A, E4448A Figure 11-29 Preamplifier and Bracket Replacement 1. Attach the preamplifier to the bracket using the four screws removed earlier. Torque to 3 inch-pounds. 2. Attach the ground wire to the ground lug of the preamplifier. 3.
Page 351: Sw4 Millimeter Switch
Assembly Replacement Procedures RF Section E4446A, E4447A, E4448A Figure 11-30 Preamplifier Wires 6. Replace the front frame. SW4 Millimeter Switch Removal 1. Drop the front frame. See page 314 for instructions. 2. Refer to Figure 11-28. Remove cables W101, W102, W103, W104, and ribbon cable W91.
Page 352: Option 123 Assemblies
Assembly Replacement Procedures RF Section E4446A, E4447A, E4448A Option 123 Assemblies E4446A, E4447A, E4448A Figure 11-31 Option 123 Assembly and Cable Locations A34 Mixer Removal 1. Drop the front frame. See page 314 for instructions. 2. Refer to Figure 11-31. Remove cables W93, W98, W99, and flat flex cable W90.
Page 353: A35 Mixer Bias Board
Assembly Replacement Procedures RF Section E4446A, E4447A, E4448A Replacement 1. Refer to Figure 11-31. Attach the A34 Mixer to the standoffs using the three screws (1) removed earlier. Torque to 9 in-lbs. 2. Replace cables W93, W98, and W99. Torque to 10 in-lbs. 3.
Page 354 Assembly Replacement Procedures RF Section E4446A, E4447A, E4448A Figure 11-32 SW3 Removal 3. Refer to Figure 11-31. Remove the two screws (4) that attach the SW3 bracket to the main bracket. Lift the switch/bracket assembly from the instrument. 4. Refer to Figure 11-33.
Page 355: Sw5 Switch
Assembly Replacement Procedures RF Section E4446A, E4447A, E4448A Figure 11-33 SW3 and Bracket Replacement 1. Attach SW3 to the bracket using the two screws removed earlier. Torque to 9 in-lbs. 2. Place the switch/bracket assembly into place on the main bracket. Refer to Figure 11-31.
Page 356 Assembly Replacement Procedures RF Section E4446A, E4447A, E4448A Figure 11-34 SW5 and Bracket Replacement 1. Attach SW5 to the bracket using the three screws removed earlier. Torque to 6 in-lbs. 2. Place the switch/bracket assembly into place on the main bracket. Refer to Figure 11-31.
Page 357: Attenuator Assembly
Assembly Replacement Procedures Attenuator Assembly E4440A, E4443A, E4445A Attenuator Assembly E4440A, E4443A, E4445A Use ESD precautions when performing this replacement procedure. CAUTION Removal 1. If you haven’t already done so, remove the instrument outer case and top brace. Refer to the “Instrument Outer Case”...
Page 358: Replacement
Assembly Replacement Procedures Attenuator Assembly E4440A, E4443A, E4445A Figure 11-35 Attenuator Assembly Removal (E4440A, E4443A, E4445A) Replacement 1. Position the attenuator assembly in the deck. 2. Using the T-10 driver, replace the 4 screws, but do not torque. 3. Replace the semi-rigid cables to the correct locations. Torque the cables to 10 inch pounds.
Page 359: Attenuator Assembly
Assembly Replacement Procedures Attenuator Assembly E4446A, E4447A, E4448A Attenuator Assembly E4446A, E4447A, E4448A Use ESD precautions when performing this replacement procedure. CAUTION Removal 1. If you haven’t already done so, remove the instrument outer case and top brace. Refer to the “Instrument Outer Case”...
Page 360: Replacement
Assembly Replacement Procedures Attenuator Assembly E4446A, E4447A, E4448A Figure 11-36 Attenuator Assembly Removal (E4446A, E4448A) Replacement 1. Position the attenuator assembly in the deck. 2. Using the T-10 driver, replace the 4 screws, but do not torque. 3. Replace the semi-rigid cables to the correct locations. Torque the cables to 10 inch pounds.
Page 361: A5 Power Supply
Assembly Replacement Procedures A5 Power Supply A5 Power Supply Use ESD precautions when performing this replacement procedure. CAUTION Removal 1. Remove the instrument top brace. Refer to the “Top Brace” removal procedure. 2. Refer to Figure 11-37. Using the T-10 driver, remove the 5 screws (1) securing the A5 power supply assembly (2) to the deck and the rear frame.
Page 362: Replacement
Assembly Replacement Procedures A5 Power Supply Replacement 1. Place the power supply assembly into position in the deck. Push down to mate the assembly with the motherboard connector. 2. Refer to Figure 11-37. Using the T-10 driver, replace the 5 screws. Torque to 9 inch pounds.
Page 363: A39 Usb/Memory Board
Assembly Replacement Procedures A39 USB/Memory Board A39 USB/Memory Board Use ESD precautions when performing this replacement procedure. CAUTION Removal 1. Remove the instrument top brace. Refer to the “Top Brace” removal procedure. 2. Remove the 9 screws attaching the rear plate in place on the PSA rear panel.
Page 364 Assembly Replacement Procedures A39 USB/Memory Board 3. Remove the USB/Memory board. To do this, gently lift the board vertically from its socket on the PSA motherboard. Chapter 11...
Page 365: Replacement
Assembly Replacement Procedures A39 USB/Memory Board Replacement 1. Insert the USB/Memory board, making sure to firmly insert the connectors into the PSA motherboard sockets, but do not exert so much force as to break the connector. 2. After installation, the memory board should look like this: 3.
Page 366: A6 Scsi Board
Assembly Replacement Procedures A6 SCSI Board A6 SCSI Board Use ESD precautions when performing this replacement procedure. CAUTION Removal 1. Refer to Figure 11-38. At the rear of the instrument, use a T-10 driver to remove the 6 screws (1) securing the small panel to the frame.
Page 367: Vertical Board Assemblies
Assembly Replacement Procedures Vertical Board Assemblies (Standard Instrument) Vertical Board Assemblies (Standard Instrument) Use ESD precautions when performing this replacement procedure. CAUTION Figure 11-39 shows the location of the vertical board assemblies. Figure 11-39 Vertical Board Assembly Locations Chapter 11...
Page 368 Assembly Replacement Procedures Vertical Board Assemblies (Standard Instrument) Item Description Item Description A5 Power Supply A10 3rd Converter Assembly A6 SCSI Interface Board or A39 A11 Reference Assembly USB/Memory Board A7 Digital IF Assembly A12 LO Synthesizer Assembly A8 Analog IF Assembly A13 Front End Driver Board A9 2nd LO/ Fan Control Assembly Figure 11-40...
Page 369 Assembly Replacement Procedures Vertical Board Assemblies (Standard Instrument) Description W1 Cable (5), coax, Front Panel External Trigger to A8 Analog IF Assy. P1 W10 Cable (8), coax, 7.5 MHz from A8 Analog IF P2, to A7 Digital IF, P1 W11 Cable (3), coax, 21.4 MHz from A10 3rd Converter J5 to A8 Analog IF, J13 W12 Cable (6), coax, TRIGGER IN from rear panel to A8 Analog IF, P4 W13 Cable (20), coax, TRIGGER 1 OUT to A9 2nd LO, J12 W14 Cable (30), coax, TRIGGER 2 OUT to A9 2nd LO, J11...
Page 370 Assembly Replacement Procedures Vertical Board Assemblies (Standard Instrument) Figure 11-41 Option 122 or 140 Assembly and Cable Locations Reference Description Agilent Part Designator Number A10 3rd Converter Assembly E4440-60261 A31 Wideband Analog IF Assembly (Option 122 or 140) E4440-60215 A32 Wideband Digital IF Assembly (Option 122 or 140) E4440-60262 W60 Cable, ribbon, ADC Data from A31 WB Analog IF to A32 E4440-60341...
Page 371: Removal
Assembly Replacement Procedures Vertical Board Assemblies (Standard Instrument) Figure 11-42 Option 122 or 140 Cable Routing Removal If you haven’t already done so, remove the instrument outer case and top brace. Refer to the “Instrument Outer Case” and the “Top Brace” removal procedures.
Page 372: A10 Third Converter Removal Procedure
Assembly Replacement Procedures Vertical Board Assemblies (Standard Instrument) A10 Third Converter Removal Procedure (E4447A only) Removal 1. Remove the A13 Front End Driver, A12 Synthesizer, and A11 Reference assemblies. The cable hold down wire will need to be removed in order to remove the Synthesizer assembly. 2.
Page 373 Assembly Replacement Procedures Vertical Board Assemblies (Standard Instrument) Refer to the silkscreened locations on the motherboard or the top brace to ensure correct placement of the assemblies. Hook the ejectors under the tabs on the rear frame and mid web. Carefully push down on the ejectors to mate the assembly with the motherboard connectors.
Page 374: Fans/Mid Web
Assembly Replacement Procedures Fans/Mid Web Fans/Mid Web The fans are attached to a part of the instrument known as the mid NOTE web. It is possible to remove a fan without removing the mid web from the instrument. The 3 fans in the instrument can be replaced individually.
Page 375 Assembly Replacement Procedures Fans/Mid Web Figure 11-43 Fan Removal Fan Replacement 1. Place the new fan on the mid-web, assuring the arrow on the fan is pointing toward the mid-web and the fan cables are positioned so they won’t interfere with the fan operation or airflow. 2.
Page 376: Mid Web
Assembly Replacement Procedures Fans/Mid Web Mid Web To completely remove the mid web, perform the following steps: Removal 1. Remove the instrument top brace. Refer to the “Top Brace” removal procedure. 2. Drop the front frame. Refer to the “Drop the Front Frame” procedure.
Page 377 Assembly Replacement Procedures Fans/Mid Web Replacement 1. Place the mid-web into position in the deck with the fans on the front side of the instrument. Take care to avoid pinching any cables or wires underneath the mid web. 2. Using the T-10 driver, replace the 9 screws that secure the mid-web/fan assembly to the deck.
Page 378: A23 Disk Drive
Assembly Replacement Procedures A23 Disk Drive A23 Disk Drive Use ESD precautions when performing this replacement procedure. CAUTION The A23 disk drive assembly consists of the disk drive, disk drive board, NOTE and disk drive mount. These are removed from the instrument as a unit, but they can be replaced separately.
Page 379 Assembly Replacement Procedures A23 Disk Drive Figure 11-45 Disk Drive and Motherboard Removal Chapter 11...
Page 380 Assembly Replacement Procedures A23 Disk Drive Figure 11-46 Disk Drive Board Removal Chapter 11...
Page 381: Replacement
Assembly Replacement Procedures A23 Disk Drive Replacement 1. To install the disk drive board (3) into the mount, align the pins on the mount with the hole and the slot on the board. Refer to Figure 11-46. 2. Install the disk drive (2) into the mount over the pc board. Ensure the drive is located over the pin at the rear of the mount.
Page 382: A25 Motherboard
Assembly Replacement Procedures A25 Motherboard A25 Motherboard Removing the motherboard requires the removal of all the other assemblies in the instrument. Take care to note the locations of cables and screws for correct placement during reassembly. Use ESD precautions when performing this replacement procedure. CAUTION The motherboard assembly consists of the A25 motherboard and the NOTE...
Page 383 Assembly Replacement Procedures A25 Motherboard Figure 11-47 Bottom Screws Chapter 11...
Page 384: Replacement
Assembly Replacement Procedures A25 Motherboard Replacement 1. Refer to Figure 11-45 on page 379. Place the motherboard into position in the deck. Using the T-10 driver, replace the screws that secure the mother board to the deck. For alignment purposes, tighten the screws in the order marked on the motherboard #1 and #2 first, then tighten the #3, #4, and #5 screws.
Page 385: A26 Cpu Assembly
Assembly Replacement Procedures A26 CPU Assembly A26 CPU Assembly Use ESD precautions when performing this replacement procedure. CAUTION The CPU assembly consists of three separate boards: the A26 CPU NOTE (processor) board, the A26A1 DRAM board, and the A26A2 Flash board. The Flash memory board contains data that is pertinent to your particular instrument.
Page 386 Assembly Replacement Procedures A26 CPU Assembly Figure 11-48 CPU Screw Locations Figure 11-49 CPU Assembly Removal Chapter 11...
Page 387: Replacement
Assembly Replacement Procedures A26 CPU Assembly Replacement 1. Secure the A26A1 DRAM and the A26A2 Flash boards onto the new processor board. Refer to the “A26A1 DRAM and A26A2 Flash Boards” replacement procedure. 2. Slide the CPU assembly into the deck. Keep the assembly flat as you slide it into the deck to avoid damage.
Page 388: A26A1 Dram And A26A2 Flash Boards
Assembly Replacement Procedures A26A1 DRAM and A26A2 Flash Boards A26A1 DRAM and A26A2 Flash Boards Use ESD precautions when performing this replacement procedure. CAUTION Removal 1. Remove the instrument top brace. Refer to the “Top Brace” removal procedure. 2. Remove the A26 assembly. Refer to the “A26 CPU Assembly”...
Page 389: Replacement
Assembly Replacement Procedures A26A1 DRAM and A26A2 Flash Boards Replacement Replacement DRAM and Flash boards are packaged with replacement NOTE standoffs. 1. Install the new standoffs. 2. To replace the DRAM or Flash boards, align the connectors and pins of the board over the holes and press down to seat the board. 3.
Page 390: Rear Frame
Assembly Replacement Procedures Rear Frame Rear Frame Use ESD precautions when performing this replacement procedure. CAUTION Removal 1. Remove the instrument top brace. Refer to the “Top Brace” removal procedure. 2. Refer to Figure 11-51. Unplug the W12, W13, W14, W19, W21, and W22 cables from the boards.
Page 391 Assembly Replacement Procedures Rear Frame Figure 11-51 Rear Panel Cables Figure 11-52 Rear Dress Panel Removal Chapter 11...
Page 392: Replacement
Assembly Replacement Procedures Rear Frame Figure 11-53 Rear Frame Removal Replacement 1. Place the rear frame in position on the deck. 2. Using the T-10 driver, replace the 11 screws to secure the rear frame to the deck. For alignment purposes, tighten the screws marked with a #1 and a #2 in Figure 11-53.
Page 393: Rf Input Connector
Assembly Replacement Procedures RF Input Connector RF Input Connector Removal 1. Remove the instrument outer case. Refer to the “Instrument Outer Case” removal procedure. 2. Remove the instrument top brace. Refer to the “Top Brace” removal procedure. 3. Remove the front frame. Refer to the “Front Frame”...
Page 394: Replacement
Assembly Replacement Procedures RF Input Connector Replacement 1. Attach the new connector to the bracket. Torque to 80 inch pounds. 2. Replace the connector and bracket into the instrument. 3. Using the T-10 driver, replace the 2 screws that secure the input connector bracket to the deck.
Page 395: Front Frame Subassemblies
Assembly Replacement Procedures Front Frame Subassemblies Front Frame Subassemblies In order to remove any of the following subassemblies, it is necessary to drop the front frame assembly from the main deck. Refer to the “Drop the Front Frame” procedure. It will also be necessary to remove the front shield from the front frame assembly.
Page 396 Assembly Replacement Procedures Front Frame Subassemblies Figure 11-56 Front Frame Subassemblies The front frame assembly consists of the following sub-assemblies: • Front Panel Interface Board (1) • Inverter Boards (2) • W5 Flat Flex cable (3) • Backlight extension cable (4) •...
Page 397: Front Frame Exploded View
Assembly Replacement Procedures Front Frame Subassemblies Front Frame Exploded View Figure 11-57 Front Frame Exploded View Item Description Item Description Display Assembly Keypad Front Shield Display Bezel Assembly A2 Front Panel Interface Assembly Dress Panel Assembly A28 Audio Out Board RPG Knob W1 Ext Trigger Input Cable Hole Plug, Nylon...
Page 398: A1 Display And Filter
Assembly Replacement Procedures Front Frame Subassemblies A1 Display and Filter Figure 11-58 Display Parts The display assembly consists of: • EMI filter (1) • display mount (2) • flat panel display (3) Chapter 11...
Page 399 Assembly Replacement Procedures Front Frame Subassemblies Display Removal Work in a clean environment to avoid getting dust on the display. The CAUTION new flat panel display comes with a protective plastic sheet over the glass. Remove this plastic very slowly to avoid damage due to ESD. The surface of the display is very easily scratched.
Page 400 Assembly Replacement Procedures Front Frame Subassemblies Figure 11-59 Front Frame Subassemblies Display Replacement 1. Carefully place the display into the rubber display mount. Flex the display mount rubber tabs until they are in place over the edges of the display. 2.
Page 401 Assembly Replacement Procedures Front Frame Subassemblies Display Filter Removal/Replacement 1. Remove the rubber mount containing the display assembly from the front frame. Refer to the “Display Removal” procedure on page 399. Be careful when handling the display/mount assembly outside of the CAUTION front frame.
Page 402: A2 Front Panel Interface Board
Assembly Replacement Procedures Front Frame Subassemblies A2 Front Panel Interface Board Removal 1. Remove the RPG knob and volume knob by pulling straight off of the control shafts. 2. Refer to Figure 11-61. Unplug both of the 2-wire backlight cables (2) from the inverter boards.
Page 403 Assembly Replacement Procedures Front Frame Subassemblies Replacement 1. Place the front panel interface board into position in the front frame assembly. Mate the connector with the connector in the keyboard. 2. Using the T-10 driver, replace the 7 screws that secure the board to the front frame.
Page 404: Bezel And Keypad
Assembly Replacement Procedures Front Frame Subassemblies Bezel and Keypad Removal 1. Remove the display/rubber mount assembly. Refer to the first section of the “Display Removal” procedure. 2. Remove the RPG knob and volume knob by pulling straight off of the control shafts.
Page 405 Assembly Replacement Procedures Front Frame Subassemblies Figure 11-63 Keypad Parts Chapter 11...
Page 406 Assembly Replacement Procedures Front Frame Subassemblies Replacement 1. Place the keypad into position in the bezel. Press on the keypad to engage the alignment pins and to seat the keys. 2. Place the keyboard over the bezel alignment pins and carefully slide to lock into place.
Page 407: Rpg
Assembly Replacement Procedures Front Frame Subassemblies Removal/Replacement 1. Remove the front panel interface board. Refer to the “A2 Front Panel Interface Board” removal procedure. 2. Unsolder the RPG, remove the nut and washer, and remove it from the front panel interface board. 3.
Page 408 Assembly Replacement Procedures Front Frame Subassemblies Figure 11-64 Front Panel External Trigger Input Connector Removal Chapter 11...
Page 409: Post-Repair Procedures
Post-Repair Procedures...
Page 410: What You Will Find In This Chapter
Post-Repair Procedures What You Will Find in This Chapter What You Will Find in This Chapter This chapter provides information that will enable you to return an instrument to full operation following the replacement of any instrument assembly. This information includes the following: ❏...
Page 411: Before Starting
Post-Repair Procedures Before Starting Before Starting There are four things you should do before starting any of the procedures listed or described in this chapter: ❏ Familiarize yourself with the safety symbols marked on the unit under test (UUT), and read the general safety considerations and the safety note definitions in the front of this guide, before you begin the procedures in this chapter.
Page 412: Post-Repair Procedures
Post-Repair Procedures Post-Repair Procedures Post-Repair Procedures Table 12-1 lists the adjustments, configuration or calibration constant reset procedures, and performance verification tests needed after an assembly replacement. Adjustments and performance verification tests and the utility that resets the calibration constants and resets the statistical data are located in the Performance Verification and Adjustment Software.
Page 413 Post-Repair Procedures Post-Repair Procedures Table 12-1 Post-Repair Testing Requirements (Continued) Adjustments, Tests, & Assembly Performance Verification Configuration A7 Digital IF Assembly Internal Align All Now Absolute Amplitude Accuracy Perform the calibration constant reset procedure for this assembly Resolution BW Switching Display Scale Fidelity Power BW Accuracy A8 Analog IF Assembly...
Page 414 Post-Repair Procedures Post-Repair Procedures Table 12-1 Post-Repair Testing Requirements (Continued) Adjustments, Tests, & Assembly Performance Verification Configuration A11 Reference Assembly Internal 10 MHz Frequency Reference Noise Sidebands adjustment (both tests) Frequency Readout Accuracy Frequency Reference Accuracy A12A1 LO/Synthesizer Perform the calibration constant reset Noise Sidebands Board or A12 Assembly procedure for this assembly...
Page 415 Post-Repair Procedures Post-Repair Procedures Table 12-1 Post-Repair Testing Requirements (Continued) Adjustments, Tests, & Assembly Performance Verification Configuration A14 Attenuator/Switch 50 MHz Calibrator Amplitude Absolute Amplitude Accuracy Attenuator Slope adjustment Frequency Response Frequency Response adjustment (all frequencies) (all bands) Input Attenuation Reset AC/DC switch activations Switching Uncertainty (E4440A, E4443A, E4445A only)
Page 416 Post-Repair Procedures Post-Repair Procedures Table 12-1 Post-Repair Testing Requirements (Continued) Adjustments, Tests, & Assembly Performance Verification Configuration A20 Lowband Assembly Gain Compression LO Power adjustment Displayed Average Noise Lowband Mixer Bias adjustment Level Overload Detector DAC adjustment Second Harmonic Distortion Frequency Response adjustment Absolute Amplitude Accuracy...
Page 417 Post-Repair Procedures Post-Repair Procedures Table 12-1 Post-Repair Testing Requirements (Continued) Adjustments, Tests, & Assembly Performance Verification Configuration A29 FELOMA/SBTX FELOMA adjustment Absolute Amplitude Driver Accuracy YTF adjustment Frequency Response Above 3 GHz Frequency Response adjustment A30 First IF Amplifier Frequency Response adjustment Absolute Amplitude (FIFA) Accuracy...
Page 418 Post-Repair Procedures Post-Repair Procedures Table 12-1 Post-Repair Testing Requirements (Continued) Adjustments, Tests, & Assembly Performance Verification Configuration A35 Unpreselected Millimeter Unpreselected Displayed Average Mixer Bias Board Mixer Bias adjustment Noise Level Frequency Response adjustment Frequency Response above 3 GHz (Option 110/123) above 3 GHz A36 Microwave or Frequency Response adjustment...
Page 419: Burst Trigger Check
Post-Repair Procedures Burst Trigger Check Burst Trigger Check Description The Burst Trigger Check verifies the ability of the instrument to sync on the burst trigger signal. The instrument internal IF Alignment signal is activated and configured to provide a pulse train. The pulses are displayed on the RF Envelope window, and will appear as an unsynchronized signal.
Page 420: Internal Front Panel Test
Post-Repair Procedures Internal Front Panel Test Internal Front Panel Test Description The Front Panel Test allows key presses and RPG knob rotations to be displayed on the instrument’s screen. This diagnosis is useful when checking the functionality of all keys and the RPG knob. Press: System More...
Page 421: 28 V Rear Panel Output Check
Post-Repair Procedures 28 V Rear Panel Output Check 28 V Rear Panel Output Check Description Instruments with Option 219 and instruments with Front End Driver assemblies E4440-60242 (<27 GHz models) or E4446-60059 (> 27 GHz models) have a switchable 28 V connector on the rear panel. Connect a voltmeter to the rear panel Noise Source Drive Out connector.
Page 422: Configuring A Replacement Cpu Assembly
If possible, it is best to capture this information from the instrument before replacing the main CPU board. A PC and the PSA Series Spectrum Analyzers Test and Adjustment NOTE software is required to restore the serial number.
Page 423 CPU board, the keywords associated with the stored serial number will no longer enable the options. In this case, contact Agilent Technologies sales and service office for the correct license numbers for your instrument. To contact the Agilent Technologies sales and service office, refer to “Contacting Agilent...
Page 424 Post-Repair Procedures Configuring a Replacement CPU Assembly Entering the Serial Number 1. Load the PSA Series Spectrum Analyzers Test and Adjustment software on your PC. 2. Under Test Plan, select Utilities. 3. Under Available Tests, choose Serial Number Initialization. You have only one chance to enter the serial number into the CAUTION replacement processor memory.
Page 425: Configuring A Replacement Flash Memory Assembly
Post-Repair Procedures Configuring a Replacement Flash Memory Assembly Configuring a Replacement Flash Memory Assembly Description The Flash memory board contains the instrument operating system, the core firmware (firmware that tells the PSA how do basic spectrum analysis), and possibly optional measurement personality firmware. The optional personality firmware is keyword protected, and the keywords are also stored in Flash memory.
Page 426: Procedure
Post-Repair Procedures Configuring a Replacement Flash Memory Assembly Procedure Step 1: Capture Configuration Information (if possible) a. If the instrument is able to boot and display the softkey menus, it should be possible to gather information using the following process. If the existing Flash board will not allow this, the configuration information will need to be obtained by other means described in the “Non-Functional Instrument”...
Page 427 Post-Repair Procedures Configuring a Replacement Flash Memory Assembly a. Press until the softkey is visible. Press System More Licensing . This will activate the alpha editor menu. Use Licensing Option the alpha editor to enter the upper case option designator. Press Enter b.
Page 428 Post-Repair Procedures Configuring a Replacement Flash Memory Assembly What to do if the instrument is non-functional and the configuration data cannot be obtained from the instrument screen Determine what options should be present: The serial tag on the rear panel contains a list of the options that were present when Agilent shipped the instrument.
Page 429: Firmware Upgrades
Firmware Upgrades...
Page 430: Firmware Upgrades Including Measurement Personality Upgrades
The Agilent p/n is 8121-0545. These cables are available at computer stores also. Instructions: 1. Go to the PSA Product Page: http://www.agilent.com/find/psa/ 2. Click on “PSA Firmware Updates”. 3. Click on “PSA Series Firmware Upgrade A.XX.XX” and follow the instructions. Chapter 13...
Page 431 Firmware Upgrades Including Measurement Personality Upgrades Re-installation of Firmware Procedure following Secure Erase All (Option 117) 1. Load the PSA Series Firmware Update Program from the following Agilent Web site: http://www.agilent.com/find/psa_firmware 2. At the menu screen, click on Troubleshooting Wizard, click on Recovery, then click Next.
Page 432 Firmware Upgrades Firmware Upgrades Including Measurement Personality Upgrades Chapter 13...
Page 433 Index Symbols part number troubleshooting removal A26A1 DRAM board troubleshooting part number A14 input attenuator removal Numerics part number A26A2 Flash memory board 10 MHz OUT (SWITCHED) rear settings panel connector troubleshooting configuring 10 MHz Out key A15 input attenuator part number 10 MHz output description part number...
Page 434 Agilent Technologies configuration information contacting Sales and Service offices configure a replacement CPU Align All Now configure a replacement Flash fan voltages...
Page 435 Index front frame shield see A2A1 and A2A2 inverter option removal boards front panel assemblies IP address front panel connectors part numbers front panel interface Option 123 keyboard see A2 front panel interface cables see A3 keyboard assembly board original instrument packing front panel keys other instrument packing front panel parts...
Page 436 Index replace see A6 SCSI board auto align see individual assemblies second LO/fan control basics replaceable parts see A9 second LO/fan control before troubleshooting replacement processor assembly electronic attenuator required test equipment second mixer equipment needed adjustments serial number FELOMA performance verification tests entering front end...

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E4440a E4443a E4445a E4446a E4447a E4448a

Agilent Technologies PSA Series Service Manual

Table of Contents

Section 1

Section 2

Section 3

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