Page 1: Service Manual
Service Manual RSA3408A 8 GHz Real-Time Spectrum Analyzer 071-1691-01 This document applies to firmware version 3.20 and above. Warning The servicing instructions are for use by qualified personnel only. To avoid personal injury, do not perform any servicing unless you are qualified to do so.
Page 2 Copyright © Tektronix. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries or suppliers, and are protected by national copyright laws and international treaty provisions. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes that in all previously published material.
Page 3 Tektronix, with shipping charges prepaid. Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located.
Page 5 ........... . . 4- - 52 RSA3408A Service Manual...
Page 6 ........10- - 3 RSA3408A Service Manual...
Page 7: Table Of Contents
Figure 6- -9: Front panel modules ......6- -19 RSA3408A Service Manual...
Page 8: Figure 6- -2: External Modules
........10- -11 RSA3408A Service Manual...
Page 9 ........10- -29 RSA3408A Service Manual...
Page 10 ........5- -2 Table 5- -2: Compatibility of the spurious correction file ..5- -15 RSA3408A Service Manual...
Page 11 ......6- -78 Table 6- -8: Symptoms and faulty modules ..... 6- -79 RSA3408A Service Manual...
Page 12 Table of Contents viii RSA3408A Service Manual...
Page 13 Terms in this Manual. These terms may appear in this manual: WARNING. Warning statements identify conditions or practices that could result in injury or loss of life. CAUTION. Caution statements identify conditions or practices that could result in damage to this product or other property. RSA3408A Service Manual...
Page 14 WARNING indicates an injury hazard not immediately accessible as you read the marking. CAUTION indicates a hazard to property including the product. Symbols on the Product. The following symbols may appear on the product: WARNING Protective Ground CAUTION High Voltage (Earth) Terminal Refer to Manual RSA3408A Service Manual...
Page 15 Use Care When Servicing With Power On. Dangerous voltages or currents may exist in this product. Disconnect power, remove battery (if applicable), and disconnect test leads before removing protective panels, soldering, or replacing components. To avoid electric shock, do not touch exposed connections. RSA3408A Service Manual...
Page 16 Service Safety Summary RSA3408A Service Manual...
Page 17 Preface This is the service manual for the RSA3408A 8 GHz Real-Time Spectrum Analyzer. This manual contains information needed to service the analyzer to the module level. Manual Structure This manual is divided into sections, such as Specifications and Theory of Operation.
Page 18 Related Documentation Other documentation for the RSA3408A analyzer includes: H The RSA3408A User Manual contains a tutorial to quickly describe how to operate the analyzer. It also includes an in-depth discussion on how to more completely use the analyzer features.
Page 19 H Read the General Safety Summary and the Service Safety Summary, beginning on page ix. H Read the RSA3408A User Manual (Tektronix part number 071-1617-xx) for operating information. When using this manual for servicing, be sure to follow all warnings, cautions, and notes.
Page 20 Introduction RSA3408A Service Manual...
Page 21 Specifications...
Page 23: Performance Conditions 1
Specifications This section contains the RSA3408A 8 GHz Real-Time Spectrum Analyzer specifications. All specifications are guaranteed unless labeled Typical. Typical specifications are provided for your convenience. NOTE. In these tables, those warranted characteristics that are checked in the Performance Verification appear with the n symbol in the Characteristics column.
Page 24: Electrical Characteristics 1
(within one year after calibration) Total frequency error Reference output level >0 dBm External reference input 10 MHz, - - 10 to +6 dBm. Spurious level must be <- - 80 dBc within 100 kHz offset. 1- 2 RSA3408A Service Manual...
Page 25: Table 1- 2: Noise Sideband
- - 112 dBc/Hz 30 kHz - - 115 dBc/Hz 100 kHz - - 135 dBc/Hz 1 MHz - - 140 dBc/Hz 5 MHz - - 140 dBc/Hz 7 MHz - - 140 dBc/Hz 10 MHz 1- 3 RSA3408A Service Manual...
Page 26 (Option 03 IQ input) Maximum input power +30 dBm (RF1 to 3, RF attenuation≥10 dB) Input attenuator RF/Baseband attenuator 0 to 55 dB (5 dB step) I/Q attenuator (Option 03) 0 to 35 dB (5 dB step) 1- 4 RSA3408A Service Manual...
Page 27: Table 1- 4: Amplitude
(20 to 30 _C) ±0.2 dB (at 100 MHz) Input attenuator setting uncertainty ±0.2 dB (0 to - - 50 dBfs); ±0.12 dB (0 to - - 50 dBfs, Typical) Level linearity in display range 1- 5 RSA3408A Service Manual...
Page 28: Table 1- 5: Spurious Response
- - 70 dBc (Signal frequency = 5 GHz, Signal level = - - 5 dBm) RF3, 7 GHz - - 70 dBc (Signal frequency = 7 GHz, Signal level = - - 5 dBm) 1- 6 RSA3408A Service Manual...
Page 29: Table 1- 6: Acquisition
(Real Time S/A, Demod, and Time modes) Maximum: 16,384,000 samples (Standard); 65,536,000 samples (Option 02) Acquisition length setting resolution 1024 samples (Real Time S/A, Demod, and Time modes) Acquisition memory size Standard: 64 MB; Option 02: 256 MB 1- 7 RSA3408A Service Manual...
Page 30: Table 1- 7: Trigger
- - 1.5 V to +1.5 V adjustable Setting Resolution 0.1 V Input impedance >2 kΩ Trigger output voltage High: >2.0 V, Low: <0.4 V (output current <1 mA) Trigger marker position timing uncertainty ±2 sample points (Power/External trigger) 1- 8 RSA3408A Service Manual...
Page 31: Table 1- 8: Rbw (Resolution Bandwidth)
Table 1- 9: Trace and display line Characteristics Description Number of traces Trace type Normal, Average, Max Hold, Min Hold Display detector Positive peak, Negative peak, and Positive-Negative peak Display line Horizontal line 1 and 2, Vertical line 1 and 2 1- 9 RSA3408A Service Manual...
Page 32: Table 1- 10: Display
±2% (- - 10 dBfs input at center, 10 to 60% modulation depth) PM demodulation ±3° (- - 10 dBfs input at center) FM demodulation ±1% of span (- - 10 dBfs input at center) 1- 10 RSA3408A Service Manual...
Page 33: Table 1- 13: Pulse Measurement
Binary, Octal, Hexadecimal AM/AM Measured amplitude versus Reference amplitude 1 dB compression measurement AM/PM Phase error versus Reference amplitude CCDF Probability of exceed versus Power level, Crest factor measurement Probability of occurrence versus Power level 1- 11 RSA3408A Service Manual...
Page 34 0.6% 100 kHz 0.6% 1 MHz 0.6% 4 MHz 0.9% 10 MHz 1.8% 20 MHz Center frequency = 5 GHz 0.7% 100 kHz 0.7% 1 MHz 0.9% 4 MHz 1.6% 10 MHz 2.4% 20 MHz 1- 12 RSA3408A Service Manual...
Page 35: Table 1- 15: Aclr Measurement (Option 27)
Residual EVM (Typical) IEEE 802.11a/g, 54 Mbps OFDM ≤- - 44 dB (center frequency = 2.447 GHz) ≤- - 42 dB (center frequency = 5.5 GHz) IEEE 802.11b, 11 Mbps CCK ≤0.7% (center frequency = 2.447 GHz) 1- 13 RSA3408A Service Manual...
Page 36: Table 1- 17: Controller
>5 ns (clock rising edge to data transition). See Figure 1- - 1. Flatness of output data before correction Amplitude +1/- - 5 dB (36 MHz span); +1/- - 2 dB (20 MHz span) Phase ±100_ (36 MHz span); ±15_ (20 MHz span) 1- 14 RSA3408A Service Manual...
Page 37: Figure 1- 1: Definition Of The Setup And Hold Time
5 A rms at 50 Hz (90 V line with 5% clipping) Surge current Maximum 52 A peak (25 _C) for ≤5 line cycles after the product has been turned off for at least 30 s. 1- 15 RSA3408A Service Manual...
Page 38: Table 1- 20: Physical Characteristics
(20 G), half-sine, 11 ms duration Three shocks in each direction along each major axis, total of 18 shocks Cooling clearance Bottom 20 mm (0.79 in) Both sides 50 mm (1.97 in) Rear 50 mm (1.97 in) 1- 16 RSA3408A Service Manual...
Page 39: Table 1- 22: Certifications And Compliances
IEC61010-1 Safety requirements for electrical equipment for measurement, control, and laboratory use. Emissions which exceed the levels required by this standard may occur when this equipment is connected to a test object. 1- 17 RSA3408A Service Manual...
Page 40 Pollution Degree 2 (as defined in IEC61010-1). Note: Rated for indoor use only. Safety Certification Compliance Equipment Type Test and measuring Safety Class Class I (as defined in IEC61010-1) - - grounded product Operating Temperature Range +5 to +40 _C 1- 18 RSA3408A Service Manual...
Page 41: Figure 1- 2: Digital Iq Output Connector Pin Assignment
I output data (bit 2), LVDS EXT_I2+ EXT_I3- - I output data (bit 3), LVDS EXT_I3+ Ground EXT_I4- - I output data (bit 4), LVDS EXT_I4+ EXT_I5- - I output data (bit 5), LVDS EXT_I5+ 1- 19 RSA3408A Service Manual...
Page 42 I output data (bit 13), LVDS EXT_I13+ EXT_I14- - I output data (bit 14), LVDS EXT_I14+ EXT_I15- - I output data (bit 15), LVDS EXT_I15+ Ground EXT_IQ_DAV- - Not used EXT_IQ_DAV+ EXT_IQ_CLK- - IQ output clock, LVDS EXT_IQ_CLK+ 1- 20 RSA3408A Service Manual...
Page 43: Table 1- 24: Q Output Connector Pin Assignment
Q output data (bit 7), LVDS EXT_Q7+ Ground EXT_Q8- - Q output data (bit 8), LVDS EXT_Q8+ EXT_Q9- - Q output data (bit 9), LVDS EXT_Q9+ EXT_Q10- - Q output data (bit 10), LVDS EXT_Q10+ 1- 21 RSA3408A Service Manual...
Page 44 Q output data (bit 12), LVDS EXT_Q12+ EXT_Q13- - Q output data (bit 13), LVDS EXT_Q13+ EXT_Q14- - Q output data (bit 14), LVDS EXT_Q14+ EXT_Q15- - Q output data (bit 15), LVDS EXT_Q15+ Ground Not used 1- 22 RSA3408A Service Manual...
Page 45 Operating Information...
Page 47 Operating Information The operating information for this instrument is available in the RSA3408A User Manual (Tektronix part number 071-1617-xx) that shipped with your product. 2- 1 RSA3408A Service Manual...
Page 48 Operating Information 2- 2 RSA3408A Service Manual...
Page 49 Theory of Operation...
Page 51: Down Converter 3
Theory of Operation This section describes the electrical operation of the RSA3408A analyzer using the major circuit blocks or modules shown in Figure 9- -1 on page 9- -3. RF Input The RF input circuit block consists of a relay for signal switching (Input Relay), Step Attenuator, Programmable Bandpass Filter, and a control circuit for these components.
Page 52: Table 1- -1: Frequency
102.4 MHz. Both the 3 LO signal and A/D clock signal generated in the Oscillator block are highly stabilized signals locked with a 10 MHz reference signal, and are output to the 3 Converter and A10 A/D board, respectively. 3- 2 RSA3408A Service Manual...
Page 53: Digital Signal Processing 3
In addition, re-sampling is performed to achieve the higher frequency resolution. I/Q signals output from the Digital Filters are sent to the Trigger Detector and Acquisition Memory. 3- 3 RSA3408A Service Manual...
Page 54: Power Supply 3
On the A70 DC Power board, LED indicators and test points are provided to facilitate checking that all the power supply voltages are output normally. 3- 4 RSA3408A Service Manual...
Page 55: External Interface 3
CPU board are performed on this board. A62 Front Connection The A62 Front Connection board interfaces with peripheral devices such as hard Board disk drive, floppy disk drive, LCD (Liquid Crystal Display), USB, and keys with the CPU board. 3- 5 RSA3408A Service Manual...
Page 56 Theory of Operation 3- 6 RSA3408A Service Manual...
Page 57 Performance Verification...
Page 59: Performance Verification Procedures 4
Tests, beginning on page 4- -9, after doing the Functional Tests and Diagnostics just referenced. Advantages: These procedures add direct checking of warranted specifica- tions. Disadvantages: They require more time to perform and suitable test equipment is required. (Refer to Equipment Required on page 4- -10.) 4- 1 RSA3408A Service Manual...
Page 60: Conventions 4
The example step below is telling you to set the analyzer controls by pressing the specified key sequence. Set the RSA3408A analyzer controls: Press MODE: DEMOD > Digital Demod > Constellation. STOP. “STOP” is accompanied by information you must read to do the procedure properly.
Page 61: Brief Procedures 4
The Diagnostics use internal routines to verify that the instrument functions properly and passes the internal circuit tests. The Functional Tests begin on page 4- -4 and the Diagnostics procedures are on page 4- -8. 4- 3 RSA3408A Service Manual...
Page 62: Functional Tests 4
Press INPUT > Signal Input Port... > Cal100M. The spectrum of the calibration signal appears. d. Check that “INPUT: CAL” and “FREE RUN” are displayed in the status indicator at the upper right of the screen (see Figure 4- -1). 4- 4 RSA3408A Service Manual...
Page 63: Figure 4- 1: Spectrum Of The Calibration Signal (100 Mhz, - 20 Dbm)
Press the SPAN key on the front panel. b. Confirm that the span is 36 MHz and the RBW is 100 kHz in the setup display on the upper part of the screen (see Figure 4- -2). 4- 5 RSA3408A Service Manual...
Page 64: Figure 4- 2: Setup Display
Figure 4- -3. e. Using the numeric keypad, set the reference level back to 0 dBm. (Press 0 > ENTER, in that order, on the keypad.) 4- 6 RSA3408A Service Manual...
Page 65: Figure 4- 3: Reference Level Setting And A/D Overflow Indicator
Figure 4- 4: Spectrogram display b. Press the RUN/STOP key on the front panel to stop data acquisition. Confirm that the trace display freezes and PAUSE is displayed in the status indicator at the top right of the screen. 4- 7 RSA3408A Service Manual...
Page 66: Figure 4- 5: Diagnostic Screen
You can press the All side key to run all the tests. 5. Check the result shown in the lower left view (“Pass” or “Fail”). The process is graphically displayed on the upper views. Figure 4- 5: Diagnostic screen 4- 8 RSA3408A Service Manual...
Page 67: Performance Tests 4
Performance Tests This section contains procedures for checking that the RSA3408A 8 GHz Real-Time Spectrum Analyzer performs as warranted. The procedures are arranged in five logical groupings: H Auto Tests H Frequency Checks H Noise Sideband Checks H Amplitude Checks...
Page 68: Table 4- 3: Test Equipment
Accuracy: <±1 dB Signal generator Frequency range: 1 MHz to 8 GHz; Agilent E8257D with Checking flatness in all bands Output level: - - 30 dBm to +10 dBm; option 1E1 (option UNX Accuracy: <±1 dB recommended) 4- 10 RSA3408A Service Manual...
Page 69 5- - 6 DOS-compatible floppy disk correction data for the signal signal generator used) and 5- - 13 generators (Items 1, 2, and 3) 17. Mouse Standard accessary File operation 18. Keyboard Standard accessary File operation 4- 11 RSA3408A Service Manual...
Page 70: Figure 4- 6: Auto Test Initial Screen
CAL > Service... > Password (270833) > PV (see Figure 4- -6). Figure 4- 6: Auto test initial screen The PV menu has the following controls: PV Select. Selects the test items as shown in Table 4- -4. 4- 12 RSA3408A Service Manual...
Page 71: Table 4- 4: Test Item Selection
H SG Type. Selects the manufacturer of the generator for the GPIB command system: HP or Anritsu. NOTE. The HP setting also supports Agilent and Rohde & Schwarz products. H GPIB Address. Sets the GPIB address of the generator. 4- 13 RSA3408A Service Manual...
Page 72 One SG flatness floppy disk (Item 16) Prerequisites Refer to page 4- - 10 1. Prepare for the test: See the following figure for the hookup. RSA3408A Signal generator GPIB cable Output 10 dB attenuator 50 Ω N-N coaxial cable 4- 14 RSA3408A Service Manual...
Page 73 Performance Tests a. Power off the RSA3408A analyzer and the signal generator. b. Connect the analyzer and the generator with a GPIB cable. c. Connect the analyzer INPUT through a 10 dB attenuator followed by a 50 Ω N-N coaxial cable to the generator output.
Page 74: Figure 4- 7: Performance Test Result Display
One 50 Ω N-N coaxial cable (Item 11) One 10 dB attenuator (Item 14) One GPIB cable (Item 13, two required) One SG flatness floppy disk (Item 16, two required) Prerequisites Refer to page 4- - 10 4- 16 RSA3408A Service Manual...
Page 75 H Press the SG Type side key to select the manufacturer of the generator (Item 1) for the GPIB command system: HP or Anritsu. H Press the SG Address side key and set the generator address. H Press the Cancel- -Back (top) side key. 4- 17 RSA3408A Service Manual...
Page 76 If the instrument fails any tests, go to When the Auto Tests Fail on page 4- -19. 9. Disconnect the test equipment: a. Disconnect the N-N cable from the analyzer input. b. Turn off the analyzer and generators. c. Disconnect the GPIB cables from all the ports. 4- 18 RSA3408A Service Manual...
Page 77: Table 4- 5: Procedure For Failed Test Item
3. Set the GPIB address of the signal generator: a. Press the SG side key to select the manufacturer of the generator for the GPIB command system: HP or Anritsu. b. Press the GPIB Address side key and set the generator address. 4- 19 RSA3408A Service Manual...
Page 78 Performance Tests 4. Check the error log: View the error log in the following location using the mouse and keyboard: NOTE. For accessing Windows XP on the analyzer, refer to the RSA3408A User Manual. H Directory: C:\Program Files\Tektronix\wca200a\log H File: spurious_RFxPV.log (RFx = RF1, RF2, or RF3, depending on the test frequency) Below is an example of the spurious_RF1PV.log file:...
Page 79 - -10 dBm c. Hook up the signal generator: Connect the generator output through a 50 Ω N-N coaxial cable to the analyzer INPUT. See the following figure. RSA3408A Signal generator Output 50 Ω N-N coaxial cable 4- 21 RSA3408A Service Manual...
Page 80 Set the frequency to 2 GHz using the numeric keypad. c. Measure peak frequency: H Press the PEAK key to place the marker on the signal peak. H Read the marker readout. Confirm that the value is 2 GHz 1.4 kHz. 4- 22 RSA3408A Service Manual...
Page 81 H Press the PEAK key to place the marker on the signal peak. H Read the marker readout. Confirm that the value is 7 GHz 2.4 kHz. 6. Disconnect the test equipment: Disconnect the cable at the analyzer input. 4- 23 RSA3408A Service Manual...
Page 82 ....2. Check the frequency: Check that the frequency counter reads 10 MHz 2.0 Hz. 3. Disconnect the hookup: Disconnect the cable at REF OUT. 4- 24 RSA3408A Service Manual...
Page 83: Noise Sideband Checks 4
....d. Hook up the signal generator: Connect the generator output through a 50 Ω N-N coaxial cable to the analyzer INPUT. See the following figure. 4- 25 RSA3408A Service Manual...
Page 84 H Press the Noise Bandwidth side key and set the value to 1 kHz using the numeric keypad. c. Check against limits: Read the phase noise (C/No) at the bottom of the screen. Confirm that the value is 110 dB/Hz or more. 4- 26 RSA3408A Service Manual...
Page 85 Check against limits: Read the phase noise (C/No) at the bottom of the screen. Confirm that the value is 132 dB/Hz or more. 5. Disconnect the test equipment: Disconnect the cable at the analyzer input. 4- 27 RSA3408A Service Manual...
Page 86: Amplitude Checks 4
See Figure 4- -8 on page 4- -29. e. Turn on POWER REF and execute the calibration. Disconnect the RF input of the power sensor from the reference output of the power meter. 4- 28 RSA3408A Service Manual...
Page 87: Figure 4- 8: Hookup For Calibrating The Power Sensor
....25 MHz d. Adjust the output level of the signal generator so that the power meter reads - -10 dBm 0.05 dBm. e. Disconnect the cable from the power sensor input. 4- 29 RSA3408A Service Manual...
Page 88 Performance Tests 3. Prepare for the test: a. Hook up the instruments: Connect the signal generator output through a 50 Ω N-N coaxial cable to the RSA3408A INPUT. See Figure 4- -10. RSA3408A Signal generator Output 50 Ω N-N coaxial cable Figure 4- 10: Hookup for checking the absolute amplitude accuracy b.
Page 89 Hook up the instruments: Connect the signal generator output through a 50 Ω N-N coaxial cable to the RSA3408A INPUT. See Figure 4- -10 on page 4- -30. b. Modify the analyzer controls: H Press the FREQUENCY/CHANNEL key on the front panel.
Page 90 Press the PEAK key on the front panel to place the marker on the signal peak. b. Check that the marker readout is within - -20 dBm 0.5 dB. 9. Disconnect the test equipment: Disconnect the cable at the analyzer input. 4- 32 RSA3408A Service Manual...
Page 91 INPUT. See the following figure. RSA3408A Signal generator Output 50 Ω N-N coaxial cable c. Initialize the analyzer: H Press the SYSTEM key on the front panel. H Press the Reset All to Factory Defaults side key. 4- 33 RSA3408A Service Manual...
Page 92 Repeat substeps 3a through d for attenuation from 5 to 30 dB in 5 dB steps. 4. Modify the generator controls: Amplitude ....- -5 dBm 4- 34 RSA3408A Service Manual...
Page 93 - - P ) is within 0.2 dB. e. Repeat substeps 7a through d for attenuation from 35 to 55 dB in 5 dB steps. 8. Disconnect the test equipment: Disconnect the cable at the analyzer input. 4- 35 RSA3408A Service Manual...
Page 94 ....100 MHz Level ....+10 dBm 4- 36 RSA3408A Service Manual...
Page 95 ... . 10 dB ....Auto 4- 37 RSA3408A Service Manual...
Page 96 Pr5 and 6, respectively. Signal generator amplitude Reference power - - 40 dBm - - 50 dBm 7. Modify the hookup: a. Connect the signal generator output to the RSA3408A analyzer input. See the following figure. RSA3408A Signal generator Output 50 Ω...
Page 97: Table 4- 6: Level Linearity Test Result
Pf5 = (Pm5 - - Pm0) - - (Pr5 - - Pr0) - - 50 dBm Pf6 = (Pm6 - - Pm0) - - (Pr6 - - Pr0) 9. Disconnect the test equipment: Disconnect the cable at the analyzer input. 4- 39 RSA3408A Service Manual...
Page 98 See the following figure. RSA3408A Signal generator Output N-SMA cable Signal generator Power combiner N-SMA cable Output b. Connect the power combiner output through a 50 Ω N-SMA coaxial cable to the analyzer INPUT. 4- 40 RSA3408A Service Manual...
Page 99 H Press TRACE/AVG > Trace 1 Type... > Average. H Press the Number Of Averages side key and set the value to 50 using the general purpose knob. H Press the MARKER SETUP key. H Press the Markers side key to select Delta. 4- 41 RSA3408A Service Manual...
Page 100 3. Check against limits: Confirm that the lowest value meets the requirement of - -78 dBc. 4. Disconnect the test equipment: Disconnect the cable at the analyzer input. 4- 42 RSA3408A Service Manual...
Page 101 H Press the RBW/FFT key on the front panel. H Press the RBW/FFT side key to select Man. H The RBW menu item is selected by default. Set the value to 10 kHz using the general purpose knob. 4- 43 RSA3408A Service Manual...
Page 102 Set the frequency to 3 GHz using the general purpose knob. b. Check against limits: Read the measurement result of Density at the bottom of the screen. Check that the value is - -150 dBm/Hz or less. 4- 44 RSA3408A Service Manual...
Page 103 Set the frequency to 7 GHz using the general purpose knob. b. Check against limits: Read the measurement result of Density at the bottom of the screen. Check that the value is - -142 dBm/Hz or less. 4- 45 RSA3408A Service Manual...
Page 104 Set the RBW to 100 kHz using the general purpose knob. H Press TRACE/AVG > Trace 1 Type... > Average. H Press the Number Of Averages side key and set the value to 50 using the general purpose knob. 4- 46 RSA3408A Service Manual...
Page 105 H The Line1 menu item is selected by default. Set the value to - -90 dBm using the numeric keypad. c. Check against limits: Confirm that the residual signal level is - -90 dBm or less. 4- 47 RSA3408A Service Manual...
Page 106 Press the PEAK key to place the marker at the peak on the noise floor. c. Check against limits: Read the marker readout. Confirm that the residual signal level is - -85 dBm or less within the whole bandwidth. 4- 48 RSA3408A Service Manual...
Page 107 ....- -5 dBm d. Hook up the signal generator: Connect the generator output through a 50 Ω N-N coaxial cable to the analyzer INPUT. See the following figure. 4- 49 RSA3408A Service Manual...
Page 108 H Press the PEAK key to place Marker 2 on the signal peak. H Read the delta marker readout (∆1- -2) on the screen. Check that the components other than the carrier meet the requirements shown in Table 4- -7 (initially - -73 dBc). 4- 50 RSA3408A Service Manual...
Page 109: Table 4- 7: Spurious Measurement
25 MHz - - 73 dBc 2 GHz - - 73 dBc 5 GHz - - 70 dBc 7 GHz - - 70 dBc 3. Disconnect the test equipment: Disconnect the cable at the analyzer input. 4- 51 RSA3408A Service Manual...
Page 110 Performance Tests Test Record Photocopy the following test record pages and use them to record the perfor- mance test results for your analyzer. 4- 52 RSA3408A Service Manual...
Page 111 Performance Tests RSA3408A Test Record Serial Number: Certificate Number: Calibration Date: Technician: Frequency readout test Frequency Measurement Low limit Test result High limit 10 MHz Marker 9,999 kHz 10,001 kHz 2 GHz Marker 1,999,998.6 kHz 2,000,001.4 kHz 5 GHz Marker 4,999,998.0 kHz...
Page 112 - - 50 dB - - 0.2 dB +0.2 dB order intermodulation distortion test Low limit Test result High limit order intermodulation distortion - - 78 dBc +5 dBm reference level, 2 GHz center frequency 4- 54 RSA3408A Service Manual...
Page 113 - - 85 dBm Spurious response test Frequency Low limit Test result High limit 25 MHz - - 73 dBc 2 GHz - - 73 dBc 5 GHz - - 70 dBc 7 GHz - - 70 dBc 4- 55 RSA3408A Service Manual...
Page 114 Performance Tests 4- 56 RSA3408A Service Manual...
Page 115 Adjustment Procedures...
Page 117: Equipment Required 5
Adjustment Procedures This section contains information needed to manually adjust the RSA3408A 8 GHz Real-Time Spectrum Analyzer. The section is divided into three subsections: H General information about adjusting the analyzer H A list of equipment required to perform the adjustments...
Page 118: Table 5- 1: Test Equipment
Adjustment Procedures Equipment Required Table 5- -1 lists the test equipment required to adjust the RSA3408A analyzer. Table 5- 1: Test equipment Item number and description Minimum requirements Example Purpose Signal generator Frequency range: 10 kHz to 3.5 GHz; Agilent 8648D...
Page 119: Preparation 5
H Store calibration factors in the power meter. H Prepare the flatness correction file for the signal generators. H Prepare the spurious correction file for the signal generators. H Option 03 only. Install the setup files on the AWG520 waveform generator. 5- 3 RSA3408A Service Manual...
Page 120 0.1e9=99.1 2e9=98.1 4e9=97.1 6e9=96.5 7e9=96.2 8e9=96.0 9e9=95.8 Save the file with the extension of .cal (for example, sensor2.cal). You can load the file to the power meter using a floppy disk or through the network. 5- 4 RSA3408A Service Manual...
Page 121 Press MEASURE > SG Flatness. Press the Read Cal Factor side key. The file selection dialog box appears. g. Enter the file name and then press the Open button. The calibration factors are stored in the power meter. 5- 5 RSA3408A Service Manual...
Page 122 Baseband, RF1, RF2, and RF3. H Procedure 2 on page 5- -10: Uses two signal generators: Item 1, which covers the baseband and RF1 band, and Item 2, which covers the RF2 and RF3 bands. 5- 6 RSA3408A Service Manual...
Page 123: Figure 5- 2: Initial Test Hookup
Connect the power sensor output to the power meter input. See Figure 5- -2. RSA3408A Signal generator Power meter GPIB cable GPIB cable Output 10 dB attenuator N adapter N-N coaxial cable Power sensor Figure 5- 2: Initial test hookup 5- 7 RSA3408A Service Manual...
Page 124 3. Let the instruments warm up: Allow a 20 minute warm-up period before you go to the next step. 4. Calibrate the power sensor: a. Modify the hookup: Connect the power sensor input to the power reference output of the power meter (see Figure 5- -3). 5- 8 RSA3408A Service Manual...
Page 125: Figure 5- 3: Hookup For Calibrating The Power Sensor
6. Disconnect the hookup: a. Remove the floppy disk by pressing the eject button. b. Turn off the signal generator, power meter, and analyzer. c. Disconnect the GPIB cables. d. Disconnect the power sensor and the N-N cable. 5- 9 RSA3408A Service Manual...
Page 126: Figure 5- 4: Initial Test Hookup
Connect the power sensor output to the power meter input. See Figure 5- -4. RSA3408A Signal generator Power meter GPIB cable GPIB cable Output 10 dB attenuator N adapter Power sensor N-N coaxial cable Figure 5- 4: Initial test hookup 5- 10 RSA3408A Service Manual...
Page 127 NOTE. The HP setting also supports Agilent and Rohde & Schwarz products. h. Press the GPIB Address side key and set the address of the generator. 3. Let the instruments warm up: Allow a 20 minute warm-up period before you go to the next step. 5- 11 RSA3408A Service Manual...
Page 128: Figure 5- 5: Hookup For Calibrating The Power Sensor
6. Disconnect the hookup: a. Remove the floppy disk by pressing the eject button. b. Turn off the signal generator, power meter, and analyzer. c. Disconnect the GPIB cables. d. Disconnect the power sensor and the N-N cable. 5- 12 RSA3408A Service Manual...
Page 129 One floppy disk (Item 17) Refer to page 5- - 1 Prerequisites 1. Prepare for the calibration: See the following figure for the hookup. RSA3408A Signal generator GPIB cable Output 10 dB attenuator 50 Ω N-N coaxial cable 5- 13 RSA3408A Service Manual...
Page 130 Adjustment Procedures a. Power off the RSA3408A analyzer and the signal generator. b. Connect the analyzer and the generator with a GPIB cable. c. Connect the analyzer INPUT through a 10 dB attenuator followed by a 50 Ω N-N coaxial cable to the generator output.
Page 131: Table 5- 2: Compatibility Of The Spurious Correction File
The auto calibration for the analyzer with Option 03 (IQ input) needs the Waveform Generator AWG520 waveform generator (Item 5). The waveform files must be installed from the AWG520 Setup Disk (floppy disk, Item 18, Tektronix part number (Option 03 Only) 063-3680-00) onto the AWG520 hard disk before executing the calibration.
Page 132: Figure 5- 6: Uncal Display
(see Figure 5- -6). If this happens, run the gain calibration. When UNCAL is displayed, run the gain calibration UNCAL FREE RUN Frequency Span Input Att Figure 5- 6: UNCAL display 5- 16 RSA3408A Service Manual...
Page 133: Figure 5- 7: Calibration Menu
CAL menu Calibrate all Gain calibration CAL key Center offset calibration DC offset calibration Auto Calibration (Select Yes or No) Figure 5- 7: Calibration menu 5- 17 RSA3408A Service Manual...
Page 134: Figure 5- 8: Center Offset
When you want to perform the gain, center offset, and DC offset calibration together, press the Calibrate All side key. NOTE. Enabling Auto Calibration (see Figure 5- -7) allows the analyzer to run the center offset calibration automatically when analyzer settings change. 5- 18 RSA3408A Service Manual...
Page 135: Figure 5- 9: Dc Offset
2. Press the Calibrate DC Offset side key. The calibration runs. It takes several seconds to complete the process. When you want to perform the gain, center offset, and DC offset calibration together, press the Calibrate All side key. 5- 19 RSA3408A Service Manual...
Page 136: Figure 5- 10: Auto Calibration Initial Screen
Target Files side key Calibration table Shows cal files. Figure 5- 10: Auto calibration initial screen The table on the screen shows cal files for each calibration item. Table 5- -3 summarizes the calibration items. 5- 20 RSA3408A Service Manual...
Page 137 RF1, RF2, and RF3 bands (about nine hours in total). H Other. Selects all the calibration except spurious in the All Band group. All Band. Performs the selected calibration in all bands (Baseband, RF1, RF2, and RF3). Measurement bandwidth: 1 MHz to 8 GHz. 5- 21 RSA3408A Service Manual...
Page 138 H SG Address. Sets the GPIB address for the signal generator (Item 1, 2, or 3). H Modulation SG Address. Sets the GPIB address for the modulation signal generator (Item 4). H AWG Address. Sets the GPIB address for the waveform generator (Item 5). 5- 22 RSA3408A Service Manual...
Page 139 50 Ω BNC coaxial cable 50 Ω N-N coaxial cable a. Power off the RSA3408A analyzer and the signal generator. b. Connect the analyzer and the generator with GPIB cable. c. Connect the analyzer INPUT through a 10 dB attenuator followed by a 50 Ω...
Page 140 Press the 10MHz Reference side key to run the calibration. 4. Disconnect the test equipment: a. Disconnect the cable from the analyzer input. b. Turn off the analyzer and generator. c. Disconnect the GPIB cable. 5- 24 RSA3408A Service Manual...
Page 141 One SG flatness floppy disk (Item 17) Refer to page 5- - 1 Prerequisites 1. Prepare for the calibration: See the following figure for the hookup. RSA3408A Signal generator GPIB cable Output 10 dB attenuator 50 Ω N-N coaxial cable 5- 25 RSA3408A Service Manual...
Page 142 Adjustment Procedures a. Power off the RSA3408A analyzer and the signal generator. b. Connect the analyzer and the generator with GPIB cable. c. Connect the analyzer INPUT through a 10 dB attenuator followed by a 50 Ω N-N coaxial cable to the generator (Item 3) output.
Page 143 10 dB attenuator 50 Ω N-N coaxial cable a. Power off the RSA3408A analyzer and the signal generators. b. Connect the analyzer and the generators with GPIB cables. c. Connect the analyzer INPUT through a 10 dB attenuator followed by a 50 Ω...
Page 144 Press the RF2+RF3 side key to run the calibration. 6. Disconnect the test equipment: a. Disconnect the N-N cable from the analyzer input. b. Turn off the analyzer and generators. c. Disconnect the GPIB cables from the generators. 5- 28 RSA3408A Service Manual...
Page 145 10 dB attenuator 50 Ω N-N coaxial cable a. Power off the RSA3408A analyzer and the signal generator. b. Connect the analyzer and the generator with GPIB cable. c. Connect the analyzer INPUT through a 10 dB attenuator followed by a 50 Ω...
Page 146 NOTE. You can select the calibration items and bands as described in Service Cal Menu on page 5- -20. 4. Disconnect the test equipment: a. Disconnect the cable from the analyzer input. b. Turn off the analyzer and generator. c. Disconnect the GPIB cable from the generator. 5- 30 RSA3408A Service Manual...
Page 147 I- - and Q- - INPUTs coaxial cables a. Power off the RSA3408A analyzer and the waveform generator. b. Connect the analyzer and the generator with a GPIB cable. c. Connect CH1 and CH2 of the generator through 50 Ω BNC coaxial cables to I+ INPUT and Q+ INPUT on the rear panel of the analyzer, respectively.
Page 148 Cal Menu on page 5- -20. 4. Disconnect the test equipment: a. Disconnect the cable from the analyzer input. b. Turn off the analyzer and generators. c. Disconnect the GPIB cables from all the ports. 5- 32 RSA3408A Service Manual...
Page 149 ....b. Hook up the signal generator: Connect the generator output through a 50 Ω N-N coaxial cable to the analyzer INPUT. See Figure 5- -11. 5- 33 RSA3408A Service Manual...
Page 150: Figure 5- 11: Test Hookup
H With the Span side key, set the span to 3 GHz using the numeric keypad. 3. Check the spectrum: Confirm that a spectrum displays at 1.5 GHz. 4. Disconnect the test equipment: Disconnect the cable at INPUT. 5- 34 RSA3408A Service Manual...
Page 151: Figure 5- 12: Test Hookup
Hook up the signal generator: Connect the generator output through a 50 Ω N-N coaxial cable to the analyzer INPUT. See Figure 5- -12. RSA3408A Signal generator Output 50 Ω N-N coaxial cable Figure 5- 12: Test hookup 5- 35 RSA3408A Service Manual...
Page 152 H With the Span side key, set the span to 3 GHz using the numeric keypad. 3. Check the spectrum: Confirm that a spectrum displays at 6.5 GHz. 4. Disconnect the test equipment: Disconnect the cable at INPUT. 5- 36 RSA3408A Service Manual...
Page 153 Maintenance...
Page 155: Preparation 6
Maintenance This section contains the information needed to do periodic and corrective maintenance on the RSA3408A 8 GHz Real-Time Spectrum Analyzer. The following subsections are included: H Preparation — Introduction plus general information on preventing damage to internal modules when doing maintenance.
Page 156 5. Handle circuit boards by the edges when possible. 6. Do not slide the modules over any surface. 7. Avoid handling modules in areas that have a floor or work-surface covering capable of generating a static charge. 6- 2 RSA3408A Service Manual...
Page 157 2 = 200 to 500 V 7 = 400 to 1000 V (est.) 3 = 250 V 8 = 900 V 4 = 500 V 9 = 1200 V 5 = 400 to 600 V 6- 3 RSA3408A Service Manual...
Page 158: Inspection And Cleaning 6
Use only deionized water when cleaning the menu buttons or front-panel buttons. Use a 75% isopropyl alcohol solution as a cleaner and rinse with deionized water. Before using any other type of cleaner, consult your Tektronix Service Center or representative. 6- 4 RSA3408A Service Manual...
Page 159 3. Clean the light filter protecting the monitor screen with a lint-free cloth dampened with either isopropyl alcohol or, preferably, a gentle, general purpose detergent-and-water solution. CAUTION. To prevent getting moisture inside the analyzer during external cleaning, use only enough liquid to dampen the cloth or applicator. 6- 5 RSA3408A Service Manual...
Page 160: Removal And Installation Procedures 6
2. Remove any remaining dust with a lint-free cloth dampened in isopropyl alcohol (75% solution) and rinse with warm deionized water. (A cotton- tipped applicator is useful for cleaning in narrow spaces and on circuit boards.) STOP. For further cleaning, contact your local Tektronix service center. 6- 6 RSA3408A Service Manual...
Page 161: Preparation 6
(Cleaning instructions are found under Inspection and Cleaning at the beginning of this section.) WARNING. Before doing any procedure in this subsection, disconnect the power cord from the line voltage source. Failure to do so could cause serious injury or death. 6- 7 RSA3408A Service Manual...
Page 162: Access Procedure 6
If you are removing a module for service, begin by doing the procedure Access Procedure (page 6- -21). By following the instructions in that procedure, you remove the module to be serviced while removing the minimum number of additional modules. 6- 8 RSA3408A Service Manual...
Page 163: Procedures For External Modules 6
H RF input connector H Rotary encoder H Preamp power H LCD display connector Procedures for H Fan H Board guide bracket 6- - 62 chassis modules H Side panel assembly H Rear panel modules 6- 9 RSA3408A Service Manual...
Page 164 Wrench, inch Standard tool Needle-nose pliers Standard tool Retaining ring pliers Standard tool; inch minimum throw Angle-tip tweezers Standard tool Pliers Standard tool Soldering iron Standard tool Solder wick Standard tool Adhesive TRA-CON: Tra-Bond #BA-2114 6- 10 RSA3408A Service Manual...
Page 165: Figure 6- 1: Analyzer Orientation
Removal and Installation Procedures Analyzer Orientation Figure 6- -1 shows how the sides of the analyzer are referenced in this manual. DOWN Figure 6- 1: Analyzer orientation 6- 11 RSA3408A Service Manual...
Page 166 Removal and Installation Procedures Rear foot Cabinet Handle Foot Flip stand Line cord Front cushion Foot pad Figure 6- 2: External modules 6- 12 RSA3408A Service Manual...
Page 167 Removal and Installation Procedures RF6 module RF5 module RF4 module RF3 module RF2 module Figure 6- 3: RF modules 6- 13 RSA3408A Service Manual...
Page 168: Figure 6- 4: Cpu Board And Disk Modules
Removal and Installation Procedures Disk bracket Stopper bracket Hard disk drive Shield bracket Shield bracket Floppy disk drive Front connection board CPU board Figure 6- 4: CPU board and disk modules 6- 14 RSA3408A Service Manual...
Page 169: Figure 6- 5: Removable Hard Disk Modules (Option 06)
Hard disk cable assembly A65 HDD connection board Inside HDD bracket Black sleeving Stopper bracket Cable mount bracket Hard disk drive Shield bracket Back bracket Front bracket Disk bracket Figure 6- 5: Removable hard disk modules (Option 06) 6- 15 RSA3408A Service Manual...
Page 170: Figure 6- 6: Mother Board And Daughter Boards
Removal and Installation Procedures A70 DC power board A40 DIFP board A10 A/D board A50 Mother board Figure 6- 6: Mother board and daughter boards 6- 16 RSA3408A Service Manual...
Page 171: Figure 6- 7: Bottom Modules - Power Supply
Removal and Installation Procedures Power supply 1 Power supply 2 Insulator Shield bracket A71 AC power board Line filter Principal power switch Power supply 3 Figure 6- 7: Bottom modules - Power supply 6- 17 RSA3408A Service Manual...
Page 172: Figure 6- 8: Bottom Modules - Rf1
Removal and Installation Procedures A150 YTF interface board Bandpass filter (YTF) A100 Cal generator board 3 dB attenuator Band relay YTF plate Input relay Step attenuator Attenuator plate RF1 bracket Figure 6- 8: Bottom modules - RF1 6- 18 RSA3408A Service Manual...
Page 173: Figure 6- 9: Front Panel Modules
Preamp power A60 Front key board connector Front panel keys Front bezel Rotary encoder Front panel Front bracket Power switch board LCD filter Low front panel General purpose knob Figure 6- 9: Front panel modules 6- 19 RSA3408A Service Manual...
Page 174 Removal and Installation Procedures Board guide bracket Rear panel PC board guide bracket SMB - - BNC connector Board guide SMB cable GPIB connector Stopper bracket Main chassis Side panel Shield bracket Figure 6- 10: Chassis modules 6- 20 RSA3408A Service Manual...
Page 175: Procedures For Cpu Board And Disk Modules 6
- 41 the module A40 DIFP board p.6- - 41 in Figure A70 DC power board p.6- - 42 6- - 6? A50 Mother board p.6- - 44 Figure 6- 11: Guide to removal procedures 6- 21 RSA3408A Service Manual...
Page 176 Remove the center two screws securing the cabinet to the rear panel. d. Slide the cabinet backward. As you remove the cabinet, take care not to bind or snag it on the analyzer’s internal cabling. 4. Reinstallation: Reverse step 3 to reinstall the cabinet. 6- 22 RSA3408A Service Manual...
Page 177 Remove the two screws securing the front cushion to the side panel at each side. b. Lifting the front of the analyzer slightly, move the front cushion away. 4. Reinstallation: Reverse step 3 to reinstall the front cushion. 6- 23 RSA3408A Service Manual...
Page 178 While holding the handle release, pull the handle out of the slot in the handle cap. Repeat the procedure to remove the handle from the other handle cap. c. Reverse the procedure to reinstall. 6- 24 RSA3408A Service Manual...
Page 179 6c; refer to the Cabinet procedure on page 6- -22 to reinstall the cabinet. Reverse steps 3 and 5, reversing each step, to reinstall the flip stand, the handle caps (if removed), and then the handle. 6- 25 RSA3408A Service Manual...
Page 180 Removal and Installation Procedures Push down to flex handle and flatten against cabinet then pull it out. Handle cap removal Handle removal Flip stand removal Foot removal Figure 6- 14: Cabinet modules removal 6- 26 RSA3408A Service Manual...
Page 181 Locate the RF3 module in the locator diagram RF Modules, Figure 6- -3, page 6- -13. 2. Orient the analyzer: Set the analyzer so the bottom is down on the work surface and its front is facing you. 6- 27 RSA3408A Service Manual...
Page 182 Unplug the cable W28 on the RF4 module. c. Remove the two screws securing the module to the main chassis. Lift the module up. 4. Reinstallation: Reverse step 3 to reinstall the RF4 module. 6- 28 RSA3408A Service Manual...
Page 183 To REF IN W503 W250 W611 To IF OUT W503 W502 W502 W610 RF5 module RF6 module RF4 module W105 W307 W106 W307 W250 W201 W201 RF2 module RF3 module Figure 6- 15: RF modules removal 6- 29 RSA3408A Service Manual...
Page 184 10 MHz REF IN and OUT, W32, W503, W29, W611, W502, and W610 b. Remove the two screws securing the module to the main chassis. Lift the module up. 4. Reinstallation: Reverse step 3 to reinstall the RF5 module. 6- 30 RSA3408A Service Manual...
Page 185 CPU board. c. Remove the two screws securing the board to the main chassis. Lift the board up and away from the chassis. 5. Reinstallation: Reverse step 3 and 4 to reinstall the CPU board. 6- 31 RSA3408A Service Manual...
Page 186 Removal and Installation Procedures IDE2 FDD1 COM1 CPU board DIMM2 DIMM1 IDE1 COM2 J102 DVO converter CPU board Board stopper bracket Memory support bracket Figure 6- 16: CPU board removal 6- 32 RSA3408A Service Manual...
Page 187 Remove the four screws securing the hard disk drive to the disk bracket. b. Lift the hard disk drive up away. 6. Reinstallation: Reverse steps 4 and 5 to reinstall the hard disk drive. 6- 33 RSA3408A Service Manual...
Page 188 Stopper bracket Hard disk drive Front connection board Floppy disk drive Shield bracket J122 J120 J112 J114 J110 J900 J106 (FDD) J100 J104 J102 (HDD) A62 Front connection board Figure 6- 17: Disk module removal 6- 34 RSA3408A Service Manual...
Page 189 Remove the two screws securing the shield bracket over the A62 board to the disk bracket. b. Remove the two screws securing the A62 board to the disk bracket. Lift the board up away. 4. Reinstallation: Reverse steps 2 and 3 to reinstall the A62 board. 6- 35 RSA3408A Service Manual...
Page 190 Disconnect the hard disk cable assembly from the hard drive cartridge. Lift the cable assembly up away. 5. Remove the hard drive cartridge: See Figure 6- -18 on page 6- -37. Pull up the hard drive cartridge from the instrument. 6- 36 RSA3408A Service Manual...
Page 191 Removal and Installation Procedures Cable mount bracket Black sleeving Hard drive cartridge To IDE1 on the CPU board To J900 on the A62 board Figure 6- 18: Hard drive cartridge removal 6- 37 RSA3408A Service Manual...
Page 192 Lift up the bracket assembly. b. Remove the six screws securing the back bracket to the front bracket. c. Remove the two edgings from the top edge of the front bracket. 6- 38 RSA3408A Service Manual...
Page 193 10. Remove the A62 Front connection board: See Figure 6- -21. Refer to A62 Front Connection Board on page 6- -35 for the procedure. 11. Reinstallation: Reverse steps 4 through 10 to reinstall the removable hard drive. 6- 39 RSA3408A Service Manual...
Page 194 Removal and Installation Procedures Stopper bracket Disk bracket Floppy disk drive Front connection board Shield bracket Figure 6- 21: Disk unit removal 6- 40 RSA3408A Service Manual...
Page 195 Locate the A40 DIFP board in locator diagram Mother board and daughter boards, Figure 6- -6 on page 6- -16. c. Do step 3 in the A10 A/D Board procedure on page 6- -41 to remove the board support bracket. 6- 41 RSA3408A Service Manual...
Page 196 Unplug the fan power cable from J300 and J302. b. Unplug the cable W75 (GPIB) from J410. c. Lift up the A70 board. 5. Reinstallation: Reverse step 3 to reinstall the A70 board and interconnect cables. 6- 42 RSA3408A Service Manual...
Page 197 Option 03 only W360 Board support bracket W610 W611 Rear support bracket RF6 module A10 A/D board Fan power GPIB J300 J302 J410 A40 DIFP board A70 DC power board Figure 6- 22: Daughter boards removal 6- 43 RSA3408A Service Manual...
Page 198 6- -65). c. Reinstall the daughter boards (refer to A10 A/D Board through A70 DC Power Board starting on page 6- -41). d. Reinstall the RF modules (refer to RF Modules on page 6- -27). 6- 44 RSA3408A Service Manual...
Page 199 Removal and Installation Procedures Figure 6- 23: Mother board removal 6- 45 RSA3408A Service Manual...
Page 200 Remove the four screws securing the power supply 2 to the bracket. Lift up and remove the power supply 2. 5. Reinstallation: Reverse steps 3 and 4 to reinstall the power supply 1 and 2. 6- 46 RSA3408A Service Manual...
Page 201 W85 to CN51 CN53 W93 to CN1 CN51 CN61 CN81 CN53 CN51 CN61 W84 to CN81 CN61 and CN81 Power supply 1 Power supply 2 Insulator Shield bracket Figure 6- 24: Power supply 1 and 2 removal 6- 47 RSA3408A Service Manual...
Page 202 Unplug the cables at CN1 and CN2 on the power supply 3 board. b. Remove the four screws securing the board to the main chassis. Lift up the board away. 4. Reinstallation: Reverse step 3 to reinstall the power supply 3. 6- 48 RSA3408A Service Manual...
Page 203 J100 To CN1 on the J110 power supply 3 To J120 on A71 J120 A71 AC power board J130 Line filter Power supply 3 To J100 on A71 Figure 6- 25: Power supply modules removal 6- 49 RSA3408A Service Manual...
Page 204 Unplug the cables from the principal power switch. b. Pressing the catches at the top and the bottom of the switch, pull the switch out. 4. Reinstallation: Reverse step 3 to reinstall the principal power switch. 6- 50 RSA3408A Service Manual...
Page 205 Locate the step attenuator in the locator diagram Bottom modules - - RF1, Figure 6- -8 on page 6- -18. 2. Orient the analyzer: Set the analyzer so its top is down on the work surface and its left side is facing you. 6- 51 RSA3408A Service Manual...
Page 206 A100 Cal generator board J100 (back) J212 J210 J400 J410 J600 J200 To J200 on A100 W122 A100 Cal generator board Step attenuator W120 Attenuator plate To J100 on A100 Figure 6- 26: RF1 modules removal - 1 6- 52 RSA3408A Service Manual...
Page 207 Using a #1 Phillips screwdriver, remove the two screws securing the band relay to the bracket. b. Using a inch wrench, disconnect the SMA cables W121, W123, and W124 from the band relay. c. Disconnect the cable W114A from the band relay. 6- 53 RSA3408A Service Manual...
Page 208 When removing the A150 YTF interface board, unsolder it at four points. W123 Bandpass filter (YTF) W115 W114 W106 W119 Input relay W120 W101 W114A W121 Band relay W124 W123 Figure 6- 27: RF1 modules removal - 2 6- 54 RSA3408A Service Manual...
Page 209 Using an SMA torque driver, disconnect the SMA cables W101, W119, and W120 from the input relay. e. Disconnect the cable W114 from the input relay. 7. Reinstallation: Reverse steps 3 through 6 to reinstall the input relay, band relay, and bandpass filter (YTF). 6- 55 RSA3408A Service Manual...
Page 210 Unplug the cable at J60 on the A50 Mother board. c. Remove the two screws securing the front-panel assembly to the main chassis at each side. Lift the front-panel assembly away. 4. Reinstallation: Reverse step 3 to reinstall the front-panel assembly. 6- 56 RSA3408A Service Manual...
Page 211 Unplug the rotary encoder cable at J140 on the A60 Front key board. b. Using the 12 mm nutdriver, remove the nut securing the rotary encoder to the front bezel. 5. Reinstallation: Reverse steps 3 and 4 to reinstall the rotary encoder and the general purpose knob. 6- 57 RSA3408A Service Manual...
Page 212 If servicing the menu buttons, lift them out of the front bezel. 4. Remove the front panel: Unstick the front panel from the front bezel to remove it. 5. Reinstallation: Reverse steps 3 and 4 to reinstall the front panel, menu buttons, and front bezel. 6- 58 RSA3408A Service Manual...
Page 213 Remove the one screw securing the A61 board to the front bracket. c. Spreading the catches at left and right sides on the front bracket, lift the A61 board up away. 4. Reinstallation: Reverse step 3 to reinstall the A61 board. 6- 59 RSA3408A Service Manual...
Page 214 You will need a #2 Phillips screwdriver (Items 1 and 3). b. Locate the LCD display in the locator diagram Front panel modules, Figure 6- -9 on page 6- -19. c. Remove the front-panel assembly (refer to the Front-Panel Assembly procedure on page 6- -56). 6- 60 RSA3408A Service Manual...
Page 215 5. Reinstallation: Reverse steps 3 and 4 to reinstall the LCD display and interconnect cables. Front sub-panel Inverter To J710 on the Mother board To J700 on the Mother board RF input connector Figure 6- 30: LCD display removal 6- 61 RSA3408A Service Manual...
Page 216: Procedures For Chassis Modules 6
2. Orient the analyzer: Set the analyzer so its bottom is down on the work surface and its left side is facing you. 3. Perform the CPU Board and Disk Modules procedure on page 6- -31 to remove the CPU board and the disk bracket. 6- 62 RSA3408A Service Manual...
Page 217 Pull out the stopper bracket to complete the removal. 5. Reinstallation: Reverse steps 3 and 4 to reinstall the side panel assembly. To J300 on A70 Stopper bracket To J302 on A70 Side panel Figure 6- 31: Fan and side panel removal 6- 63 RSA3408A Service Manual...
Page 218 2. Orient the analyzer: Set the analyzer so its bottom is down on the work surface and its left side is facing you. When removing the board guide, press its catches on both sides before pulling it backward. Board guide bracket Figure 6- 32: Board guide bracket removal 6- 64 RSA3408A Service Manual...
Page 219 Using a #1 Phillips screwdriver, remove the four screws securing the connector to the rear chassis. Pull the connector away. SMB - - BNC connector Rear panel SMB cable GPIB connector Figure 6- 33: Rear panel removal 6- 65 RSA3408A Service Manual...
Page 220 Remove the two screws securing the rear panel to the main chassis. Lift the rear panel up and away from the chassis. 6. Reinstallation: Reverse steps 3 through 5 to reinstall the rear panel. 6- 66 RSA3408A Service Manual...
Page 221: Troubleshooting 6
If a fault is detected, first check that the power unit is operating properly according to “Troubleshooting Procedure 1 — Power supply modules”. Then, locate the faulty board according to the troubleshooting tree for each fault or the symptom/cause table. 6- 67 RSA3408A Service Manual...
Page 222 (see Table 6- - 7 and Figure 6- - 39). the fan on Replace the fan. the CPU board the voltages working? The power supply is OK. Figure 6- 34: Troubleshooting procedure 1 — Power supply system 6- 68 RSA3408A Service Manual...
Page 223 Amplitude: +6.5 dBm ±3 dB Replace RF6 module. Display and CPU system is OK. Replace A40 DIFP board or A50 Mother board Figure 6- 35: Troubleshooting procedure 2 — Display and CPU system 6- 69 RSA3408A Service Manual...
Page 224 Input relay, or Amplitude: +6.5 dBm Amplitude: - - 20 dBm A100 Cal generator. ±3 dB ±1 dB Replace Replace RF6 module. Band relay, or A100 Cal generator. Figure 6- 36: Troubleshooting procedure 3 — Signal path 6- 70 RSA3408A Service Manual...
Page 225 Replace the A/D board. the spectrum measured as follows? Frequency: 10 MHz ±10 Hz Amplitude: - - 2 dBm ±3 dB Replace RF6 module. Figure 6- 36: Troubleshooting procedure 3 — Signal path (Cont.) 6- 71 RSA3408A Service Manual...
Page 226 Replace RF6 module. the spectrum measured as follows? Replace RF6 module. Replace RF4 module. Frequency: 43.125 MHz ±10 Hz Amplitude: - - 2 dBm ±3 dB Figure 6- 36: Troubleshooting procedure 3 — Signal path (Cont.) 6- 72 RSA3408A Service Manual...
Page 227 Replace RF4 module. the spectrum displayed with correct amplitude? Replace Replace A100 Cal generator board. Step attenuator Input relay or A100 Cal generator. Replace the step attenuator. Figure 6- 36: Troubleshooting procedure 3 — Signal path (Cont.) 6- 73 RSA3408A Service Manual...
Page 228 Refer to Reconfiguration of set correctly? RF Modules on page 5- - 33. Replace Restart the analyzer. Bandpass filter or A100 Cal generator. Figure 6- 36: Troubleshooting procedure 3 — Signal path (Cont.) 6- 74 RSA3408A Service Manual...
Page 229 W307 W124 W201 W106 To bandpass filter Front connection J700 J810 J710 LCD inverter Power switch J140 J120 J130 Front key J100 Preamplifier power Figure 6- 37: Top view of the instrument for cable interconnection 6- 75 RSA3408A Service Manual...
Page 230: Table 1- -3: Input
J212 J210 W115 J600 J400 J410 J200 To RF3 Bandpass W106 filter (YTF) W114 W119 Step attenuator To RF4 Input relay W120 W101 RF input Figure 6- 38: Bottom view the instrument for cable interconnection 6- 76 RSA3408A Service Manual...
Page 231 - - 11.4 V CN81 +3.3 V +3.14 V +3.46 V +3.3 V +3.14 V +3.46 V Power supply 3 +5 V +4.75 V +5.25 V +5 V +4.75 V +5.25 V +15 V +14.25 V +15.75 V 6- 77 RSA3408A Service Manual...
Page 232 TP206 +6.6 V +6.27 V +6.93 V Symptoms and Faulty Modules Fault symptoms can help you identify faulty boards or modules. Fault symptoms and suspected boards or modules are listed in Table 6- -8 below: 6- 78 RSA3408A Service Manual...
Page 233 A40 DIFP board Baseband mode does not work. A10 A/D board RF1 band does not work. RF2 or RF3 module RF2 or 3 band does not work. RF3 module, Bandpass filter, or A100 Cal generator board 6- 79 RSA3408A Service Manual...
Page 234: Required Adjustments After Replacing Modules 6
H You must calibrate IF flatness, RF gain and flatness for RF2 and 3 bands. A100 Cal Generator Board H You must calibrate baseband gain and RF gain for RF1 band. Hard Disk Drive H Full calibration is necessary because the calibration factors are lost. 6- 80 RSA3408A Service Manual...
Page 235 Options...
Page 237: Options And Accessories
Options and Accessories The options and accessories list for this instrument is available in the RSA3408A User Manual (071-1617-xx) that shipped with your product. Refer to the Options and Accessories section in Appendices of your user manual. 7- 1 RSA3408A Service Manual...
Page 238 Options and Accessories 7- 2 RSA3408A Service Manual...
Page 239 Electrical Parts List...
Page 241 The modules that make up this instrument are often a combination of mechanical and electrical subparts. Therefore, all replaceable modules are listed in Sec- tion 10, Mechanical Parts List. Refer to that section for part numbers when using this manual. 8- - 1 RSA3408A Service Manual...
Page 242 Electrical Parts List 8- - 2 RSA3408A Service Manual...
Page 243 Diagrams...
Page 245 Diagrams This section contains the following diagrams: H Block diagram: Shows the modules and functional blocks. H Interconnect diagrams: Show how the modules connect together. 9- 1 RSA3408A Service Manual...
Page 246 Diagrams 9- 2 RSA3408A Service Manual...
Page 247 Power supply 3 GPIB DVO converter CPU board Front connection Front panel key 8.4” LCD Principal power 512 MB memory board board AC power board switch USB X2 ON/STANDBY switch 3.5” FDD Figure 9- 1: Block diagram 9- 3 RSA3408A Service Manual...
Page 248 9- 4 RSA3408A Service Manual...
Page 249 J100 J122 AC power board filter switch J100 J102 J112 DC-DC Voltage Floppy disk Rotary Power switch converter regulator encoder drive board Preamplifier Hard disk Fans power drive GPIB Figure 9- 2: Interconnect diagram 9- 5 RSA3408A Service Manual...
Page 250 9- 6 RSA3408A Service Manual...
Page 251 Mechanical Parts List...
Page 253 Replaceable Parts This section contains a list of the replaceable modules for the RSA3408A 8 GHz Real-Time Spectrum Analyzer. Use this list to identify and order replacement parts. Parts Ordering Information Replacement parts are available through your local Tektronix field office or representative.
Page 254 670-7918-03 670-7918-XX When you order parts, Tektronix will provide you with the most current part for your product type, serial number, and modification (if applicable). At the time of your order, Tektronix will determine the part number revision level needed for your product, based on the information you provide.
Page 255 Items in this section are referenced by figure and index numbers to the exploded view illustrations that follow. Tektronix part number Use this part number when ordering replacement parts from Tektronix. 3 and 4 Serial number Column three indicates the serial number at which the part was first effective. Column four indicates the serial number at which the part was discontinued.
Page 256 SHIELD,GASKET;ELEC CONDUCTIVE URETHANE FOAM,3MM X 3MM,W/ADHESIVE, (3102),9.3CM LENGTH - - 21 167- - 0307- - XX IC,MEMORY;USB,BKUP.EXE PRE- - INSTALLED,TYPE/SN LABEL ATTACHED, RSA3408A OPT06 - - 22 161- - 0230- - XX CABLE ASSY,PWR(STANDARD ACCESSORY) 10- 4 RSA3408A Service Manual...
Page 257 Replaceable Parts Option 06 Figure 10- 1: External modules 10- 5 RSA3408A Service Manual...
Page 258 KNOB,ASSY:6MM ID X 38MM OD X 11MM H,SILVER GRAY, ABS - - 18 335- - 1073- - XX MARKER,IDENT:MKD RSA3408A,POLYCARBONATE - - 19 174- - B982- - XX CA ASSY,SP,ELEC:16,26AWG,15CM,RIBBON,W/HLDR - - 20 174- - B981- - XX CA ASSY,SP,ELEC:5,26AWG,27CM,RIBBON,W/HLDR 10- 6 RSA3408A Service Manual...
Page 259 Replaceable Parts Included in #11 Figure 10- 2: Front-panel assembly - 1 10- 7 RSA3408A Service Manual...
Page 260 386- - A857- - XX PLATE:N- - CONNECTOR - - 15 348- - A116- - XX SHLD GSKT ELEC:CONDUCTIVE URETHANE FOAM,1MM X 3MM,W/ADHESIVE - - 16 211- - 0751- - XX SCREW,MACHINE:M3X8MM L,PNH,STL,ZN- - C,CROSS REC,W/FLAT&LOCK WASHERS 10- 8 RSA3408A Service Manual...
Page 261 Replaceable Parts Figure 10- 3: Front-panel assembly - 2 10- 9 RSA3408A Service Manual...
Page 262 - - 1 211- - 1028- - XX SCREW,MACHINE:M4X8MM L,PNH,STL,ZN- - C PL,CROSS REC,W/FLAT&LOCK WASHER - - 2 650- - 4726- - XX MODULE,RF:DOWNCONVERTER,3RD,LO OSC&AD CLK,RF6,RSA3408A - - 3 650- - 4725- - XX MODULE,RF:DOWNCONVERTER,3RD,GAIN,RF5,RSA3408A - - 4 650- - 4724- - XX MODULE,RF;DOWNCONVERTER,SYNTHESIZER,RF4,RSA3408A...
Page 263 Replaceable Parts Figure 10- 4: RF modules 10- 11 RSA3408A Service Manual...
Page 264 CIRCUIT BD ASSY:A50 MOTHER,389- - B165- - XX WIRED - - 27 211- - 0871- - XX SCREW,MACHINE:M3X12MM L,PNH,STL,ZN- - CM1,W/K- - PLAIN&SPLIT WASHER - - 28 343- - 1644- - XX CLAMP,CABLE:CLIP LOCKING WIRE,NYLON 10- 12 RSA3408A Service Manual...
Page 265 Replaceable Parts See Figure 10- - 6 for details. Included in #3. Figure 10- 5: Mother board and its daughter boards 10- 13 RSA3408A Service Manual...
Page 266 CA ASSY,SP,ELEC:FLAT,40 COND,28AWG,30CM L,2X20 HEADER CONN BOTH, KEY POSITION #20 - - 24 174- - B993- - XX CA ASSY,SP,ELEC;44,28AWG,8CM L,2MM PITCH,NORMAL ASSY - - 25 174- - B991- - XX CA ASSY,SP,ELEC:26,1MM PITCH,8CM L,FFC,REVERSE 10- 14 RSA3408A Service Manual...
Page 267 Replaceable Parts Figure 10- 6: Disk modules 10- 15 RSA3408A Service Manual...
Page 268 - - 13 407- - 5116- - XX BRACKET,STOPPER,HDD CON- - BD,LEFT - - 14 198- - 5868- - XX WIRE KIT,ELEC:FLAT&RIBBON W/A64,BRACKET,SLEEVING;RSA3408A OPT06 - - 15 407- - 5105- - XX BRACKET,FDD&HDD;OUTSIDE,BACK - - 16 348- - A143- - XX GASKET,SHIELD:FINGER TYPE,15.2MMW X 5.6MMH X 7.2MML...
Page 269 Replaceable Parts See Figure 10- - 8 for details. Black sleeving See Figure 10- - 6- - 1. Figure 10- 7: Disk modules (Option 06) - 1 10- 17 RSA3408A Service Manual...
Page 270 SPACER,POST:5.0MM L,M2.6 THRU,DELRIN,5MM HEX - - 10 671- - 6094- - XX CIRCUIT BD ASSY;A64 HDD CONNECTION UPPER,389- - 3792- - 00 WIRED - - 11 211- - A152- - XX SCREW,MACHINE;M2.5X8MM L,STL,PNH,NI PL,CROSS RESS,W/PLAIN&SPLIT WASHER 10- 18 RSA3408A Service Manual...
Page 271 Replaceable Parts Figure 10- 8: Disk modules (Option 06) - 2 10- 19 RSA3408A Service Manual...
Page 272 174- - C004- - XX CA ASSY,SP,ELEC:2,18AWG,13CM L,W/FASTON TO HLDR 3P,W/TUBE - - 24 174- - C005- - XX CA ASSY,SP,ELEC:2,18AWG,15CM L,W/HOLDER,HLDR 5P TO 3P - - 25 174- - C006- - XX CA ASSY,SP,ELEC:2,18AWG,9CM L,W/HOLDER,HLDR 5P TO 3P 10- 20 RSA3408A Service Manual...
Page 273 Replaceable Parts Figure 10- 9: Bottom modules - Power supply 10- 21 RSA3408A Service Manual...
Page 274 348- - 0949- - XX GROMMET,PLASTIC:NYLON,BLACK,RING,15MM ID - - 25 174- - B949- - XX CA ASSY,RF:50OHM,SEMI- - RIGID,W106,FINE ATT TO SW - - 26 174- - C041- - XX CABLE ASSY,RF:SEMI- - RIGID,W124,SW TO A310 10- 22 RSA3408A Service Manual...
Page 275 Replaceable Parts A150 A100 Figure 10- 10: Bottom modules - RF1 10- 23 RSA3408A Service Manual...
Page 276 211- - 1028- - XX SCREW,MACHINE:M4X8MM L,PNH,STL,ZN- - C PL,CROSS REC W/FLAT&LOCK WASHER - - 18 441- - A293- - XX CHASSIS,MAIN - - 19 211- - 1028- - XX SCREW,MACHINE:M4X8MM L,PNH,STL,ZN- - C PL,CROSS REC W/FLAT&LOCK WASHER 10- 24 RSA3408A Service Manual...
Page 277 Replaceable Parts W42, W43, W44, W45, W620, W621, W560 Figure 10- 11: Chassis modules - 1 10- 25 RSA3408A Service Manual...
Page 278 SHLD GSKT ELEC:CONDUCTIVE URETHANE FOAM,1X4 W/ADHESIVE,10.5CM - - 11 348- - A158- - XX SHLD GSKT ELEC:CONDUCTIVE URETHANE FOAM,1X4 W/ADHESIVE,10CM - - 12 348- - A143- - XX GASKET,SHIELD:FINGER TYPE,15.2MM W X 5.6MM H X 7.2MM L 10- 26 RSA3408A Service Manual...
Page 279 Replaceable Parts Figure 10- 12: Chassis modules - 2 10- 27 RSA3408A Service Manual...
Page 280 - - - - - - - - - - - - - - - - SCREW 10- - 32X0.354INCH,TRUSS (Included in the slide assembly (Figure index 10- - 13- - 7)) - - 13 335- - 0391- - XX MARKER,IDENT;SAFETY LABEL 10- 28 RSA3408A Service Manual...
Page 281 Replaceable Parts Figure 10- 13: Rackmount 10- 29 RSA3408A Service Manual...
Page 282 071- - 1617- - XX MANUAL,TECH:USER,ENGLISH 077- - 0003- - XX MANUAL,TECH:PROGRAMMER,ENGLISH OPTIONAL ACCESSORIES 071- - 1691- - XX MANUAL,TECH:SERVICE,ENGLISH 077- - 0007- - XX MANUAL,TECH:TECHNICAL REFERENCE,RSA3408A;PDF,ENGLISH 063- - 3680- - XX SOFTWARE PKG:3.5FD,AWG520 SETUP DISK,FOR WCA200 SERVICE 10- 30 RSA3408A Service Manual...

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