Page 1 This document applies to firmware version 4.0 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. Refer to all safety summaries prior to performing service. www.tektronix.com...
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 Table of Contents General Safety Summary ........Service Safety Summary .
Page 6 Table of Contents Maintenance Related Maintenance Procedures ........5- - 1 Preparation .
Page 7: Table Of Contents
Table of Contents List of Figures Figure 3- -1: Spectrum of the calibration signal (100 MHz, - -20 dBm) 3- -5 Figure 3- -2: Setup display ........3- -6 Figure 3- -3: Reference level setting and Overrange indicator .
Page 8 Table of Contents Figure 5- -13: Front cushion removal ......5- -24 Figure 5- -14: Cabinet modules removal .
Page 9 Table of Contents Figure 7- -8: Disk modules (Option 06) - - 2 ..... . 7- -19 Figure 7- -9: Bottom modules - - Power supply .
Page 10 Table of Contents List of Tables Table 3- -1: Span and RBW ........3- -6 Table 3- -2: Internal diagnostic program .
Page 11 General Safety Summary Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it. To avoid potential hazards, use this product only as specified. Only qualified personnel should perform service procedures. To Avoid Fire or Use Proper Power Cord.
Page 12 General Safety Summary Symbols and Terms 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.
Page 13 Service Safety Summary Only qualified personnel should perform service procedures. Read this Service Safety Summary and the General Safety Summary before performing any service procedures. Do Not Service Alone. Do not perform internal service or adjustments of this product unless another person capable of rendering first aid and resuscitation is present.
Page 14 Service Safety Summary RSA3408B Analyzer Service Manual...
Page 15 H Diagrams contains a block diagram and an interconnection diagram. H Replaceable Parts List includes a table of all replaceable modules, their descriptions, and their Tektronix part numbers. RSA3408B Analyzer Service Manual...
Page 16 Preface Manual Conventions This manual uses certain conventions that you should become familiar with. Some sections of the manual contain procedures for you to perform. To keep those instructions clear and consistent, this manual uses the following conven- tions: H Names of front panel controls and menus appear in the same case (initial capital) in the manual as is used on the analyzer front panel and menus;...
Page 17 H Read the General Safety Summary and the Service Safety Summary, beginning on page vii. H Read the RSA3408B User Manual (Tektronix part number 071-2364-xx) for operating information. When using this manual for servicing, be sure to follow all warnings, cautions, and notes.
Page 18 Introduction RSA3408B Analyzer Service Manual...
Page 19 Specifications The specifications for this instrument are available on the Documents CD (Tektronix part number 063-4089-xx) that shipped with your product. Look for the RSA3408B 8 GHz Real-Time Spectrum Analyzer Specifications and Performance Verification Technical Reference PDF (Tektronix part number 071-2480-xx), available on this disk.
Page 20 Specifications 1- 2 RSA3408B Analyzer Service Manual...
Page 21 Theory of Operation This section describes the electrical operation of the RSA3408B analyzer using the major circuit blocks or modules shown in Figure 6- -1 on page 6- -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 22 Theory of Operation In the baseband, an input signal enters the 1 Converter. Then the signal path is switched with a relay and the signal is sent directly to the A10 A/D board for A/D conversion. In the RF1 band, an input signal goes through all converters , and 3 ).
Page 23 Theory of Operation The 10 MHz Reference Oscillator is configured around an OCXO (Oven Controlled Crystal Oscillator) with extremely high frequency stability. It is used as the reference clock source for all the oscillators including the frequency synthesizer circuits. Circuits such as the input circuit of external 10 MHz reference signal, internal/external reference switching circuit, and 10 MHz reference output circuit are also contained in the RF6 module.
Page 24 Theory of Operation The Trigger Detector achieves real-time frequency trigger function. When the Frequency Mask Trigger function is activated, window function operation is executed to the input signal first. To accelerate the operation, data are divided into two groups: the odd frame data and the even frame data. With pipeline-con- nected FFT processors, real-time FFT is applied to these groups of data.
Page 25 Theory of Operation A70 DC Power Board The A70 DC Power board is equipped with multiple DC/DC converters, and based upon the output voltages supplied by the Power Supply 1 and 2 units, power voltages other than above are generated on this board. 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.
Page 26 Theory of Operation 2- 6 RSA3408B Analyzer Service Manual...
Page 27 Performance Verification Procedures Two types of Performance Verification procedures can be performed on this product; Brief Procedures and Performance Tests. You may not need to perform all of these procedures, depending on what you want to accomplish. H To rapidly confirm that the analyzer functions properly and was adjusted properly, do the brief procedures under Functional Tests and Diagnostics, which begin on page 3- -3.
Page 28 Performance Verification Procedures Conventions Throughout these procedures, the following conventions apply: H Each test procedure uses the following general format: Title of Test Equipment Required Prerequisites Procedure H Each procedure consists of as many steps, substeps, and subparts as required to do the test.
Page 29 Brief Procedures The Functional Tests use the internal calibration signal as a test-signal source for further verifying that the analyzer functions properly. The Diagnostics use internal routines to verify that the instrument functions properly and passes the internal circuit tests. The Functional Tests begin on page 3- -4 and the Diagnostics procedures are on page 3- -8.
Page 30 Brief Procedures Functional Tests The analyzer has a built-in calibration signal source with an amplitude of approximately - -20 dBm and frequency of 100 MHz. Using this source, perform this quick functional check to verify that your instrument is operating correctly. Equipment None Required...
Page 31: Figure 3- 1: Spectrum Of The Calibration Signal (100 Mhz, - 20 Dbm)
Brief Procedures Status indicator Marker readout Marker Figure 3- 1: Spectrum of the calibration signal (100 MHz, - 20 dBm) 5. Check the center frequency and peak amplitude using the marker: a. Press the Peak key on the front panel to place the marker on the peak (see Figure 3- -1).
Page 32: Figure 3- 2: Setup Display
Brief Procedures Span Span setting Setup display Figure 3- 2: Setup display c. Using the general purpose knob, change the span setting as listed in Table 3- -1 and check that the RBW is displayed correctly. Table 3- 1: Span and RBW Span 36 MHz 100 kHz...
Page 33: Figure 3- 3: Reference Level Setting And Overrange Indicator
Brief Procedures Overrange indicator Reference level setting Reference level Figure 3- 3: Reference level setting and Overrange indicator 8. Check the spectrogram display: a. Press S/A > S/A with Spectrogram. Check that the spectrogram is displayed on the lower side of the screen (see Figure 3- -4). Spectrogram Figure 3- 4: Spectrogram display b.
Page 34: Figure 3- 5: Diagnostic Screen
Brief Procedures Diagnostics You can run the internal diagnostic program to check hardware states. Table 3- -2 shows the test items and their descriptions. Table 3- 2: Internal diagnostic program Menu item Description Possible failure Temp Sensor Checks that the temperature sensor works correctly. RF5 module Data Memory Checks that the acquisition memory works correctly.
Page 35 Performance Tests This section contains procedures for checking that the RSA3408B 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 H Spurious Response Checks They check all the characteristics that are designated as checked in Chapter 1, Specifications.
Page 36: Table 3- 3: Test Equipment
Performance Tests Prerequisites The tests in this section make up an extensive, valid confirmation of performance and functionality when the following requirements are met: H The cabinet must be installed on the analyzer. H The instrument must have passed the procedures under Brief Procedures found on page 3- -3.
Page 37 Range: 500 MHz to 2 GHz; Isolation: Mini-Circuits ZAPD-21 Checking intermodulation >18 dB; Insertion loss: <1.0 dB distortion 10. BNC cable 50 Ω, 36 in, male-to-male BNC Tektronix part number Signal interconnection connectors 012-1341-XX 11. N-N cable 50 Ω, 36 in, male-to-male N Signal interconnection connectors 12.
Page 38: Figure 3- 6: Auto Test Initial Screen
Performance Tests Auto Tests The auto tests use internal routines to verify specifications for the following characteristics: H Baseband flatness H IF flatness H RF flatness H Spurious response Use the service PV menu and procedure described below to set parameters and perform the tests.
Page 39: Table 3- 4: Test Item Selection
Performance Tests Table 3- 4: Test item selection PV Select Test item Spurious Other Baseband flatness ✓ ✓ IF flatness ✓ ✓ RF flatness ✓ ✓ Spurious response ✓ ✓ NOTE. It takes several hours to perform the spurious test. All Band.
Page 40 Performance Tests STOP. Select either of these two procedures, depending on the signal genera- tor(s) you use: H Procedure 1 below: Uses one signal generator, Item 3 that covers all measurement bands (Baseband, RF1, RF2, and RF3). H Procedure 2 on page 3- -16: Uses two signal generators: Item 1 that covers the baseband and RF1 band and Item 2 that covers the RF2 and RF3 bands.
Page 41 Performance Tests a. Power off the RSA3408B 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. d.
Page 42: Figure 3- 7: Performance Test Result Display
Performance Tests Figure 3- 7: Performance test result display 6. 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. Procedure 2 Performs the auto tests using two signal generators, Item 1 that covers the baseband and RF1 band and Item 2 that covers the RF2 and RF3 bands.
Page 43 Performance Tests 1. Prepare for the test: Hook up the equipment as shown in the following figure. RSA3408B Signal generator (Item 2) Signal generator (Item 1) GPIB cable GPIB cable Output 10 dB attenuator 50 Ω N-N coaxial cable a. Power off the analyzer and the signal generators. b.
Page 44 Performance Tests 4. Perform the tests in the baseband and RF1 band: Press the BB+RF1 side key to perform the tests. 5. Check the test results: Check the pass/fail results displayed on the lower left of the screen (see Figure 3- -7 on page 3- -16). If the instrument fails any tests, go to When the Auto Tests Fail on page 3- -19.
Page 45: Table 3- 5: Procedure For Failed Test Item
Performance Tests When the Auto Tests Fail If any test results in Fail (see Figure 3- -7 on page 3- -16), perform calibration, referring to Auto Calibration on page 4- -20, and then perform the auto tests again. 1. Perform the auto calibration for the failed test item as shown in Table 3- -5. Table 3- 5: Procedure for failed test item Failed test item Procedure...
Page 46 View the error log in the following location using the mouse and keyboard: NOTE. For accessing Microsoft Windows XP on the analyzer, refer to the RSA3408B 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 47 Performance Tests Frequency Checks These procedures check the frequency-related characteristics and are listed as checked in Specifications of the RSA3408B Technical Reference. Check Frequency Readout Equipment One signal generator (Item 2 or 3) Required Accuracy One 50 Ω N-N coaxial cable (Item 11) Prerequisites Refer to page 3- - 10.
Page 48 Performance Tests 2. Check frequency accuracy in the baseband: a. Modify the analyzer default settings: H Press the Frequency/Channel key on the front panel. H The Center Freq menu item is selected by default. Set the frequency to 10 MHz using the numeric keypad. H Press the Span key on the front panel.
Page 49 Performance Tests 4. Check frequency accuracy in the RF2 band: a. Modify the generator control: Frequency ....5 GHz b. Modify the analyzer controls: H Press the Frequency/Channel key on the front panel. H The Center Freq menu item is selected by default.
Page 50 Performance Tests Check 10 MHz Reference One frequency counter (Item 6) Equipment Output Accuracy Required One 50 Ω BNC coaxial cable (Item 10) One 50 Ω terminator (Item 15) Prerequisites Refer to page 3- - 10. The frequency counter must have been operating for a warm-up period of at least 24 hours.
Page 51 Performance Tests Noise Sideband Checks These procedures check the noise sideband-related characteristics and are listed as checked in Specifications of the RSA3408B Technical Reference. Check Noise Sideband Equipment One signal generator (Item 4) Required One 50 Ω N-N coaxial cable (Item 11) Prerequisites Refer to page 3- - 10.
Page 52 Performance Tests RSA3408B Signal generator Output 50 Ω N- - N coaxial cable 2. Check phase noise for a span of 50 kHz: a. Modify the analyzer controls: H Press the Span key on the front panel. H The Span menu item is selected by default. Set the span to 50 kHz using the general purpose knob or the numeric keypad.
Page 53 Performance Tests 3. Check phase noise for a span of 500 kHz: a. Modify the analyzer controls: H Press the Span key on the front panel. H The Span menu item is selected by default. Set the span to 500 kHz using the general purpose knob or the numeric keypad.
Page 54 Performance Tests Amplitude Checks These procedures check the amplitude-related characteristics and are listed as checked in Specifications of the RSA3408B Technical Reference. Check Absolute Equipment One signal generator (Item 1) Required Amplitude Accuracy One power meter (Item 7) One power sensor (Item 8) One 50 Ω...
Page 55: Figure 3- 8: Hookup For Calibrating The Power Sensor
Performance Tests Power meter Power reference output Figure 3- 8: Hookup for calibrating the power sensor Baseband Test. 2. Set the signal generator output: a. Hook up the instruments: Connect the signal generator (Item 1) output through a 50 Ω N-N coaxial cable to the power sensor input.
Page 56 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 RSA3408B Input. See Figure 3- -10. RSA3408B Signal generator Output 50 Ω N-N coaxial cable Figure 3- 10: Hookup for checking the absolute amplitude accuracy b.
Page 57 Performance Tests 4. Check the amplitude: a. Press the Peak key on the front panel to place the marker on the signal peak. b. Check that the marker readout is within - -10 dBm 0.3 dB. 5. Disconnect the hookup: Disconnect the cable at the analyzer input.
Page 58 Performance Tests c. Calibrate the analyzer gain: H Press Cal > Calibrate Gain. H Press Amplitude > Auto Level. 8. Check the amplitude: a. Press the Peak key on the front panel to place the marker on the signal peak. b.
Page 59 Performance Tests Check Input Attenuator One signal generator (Item 1) Equipment Setting Uncertainty Required One 50 Ω N-N coaxial cables (Item 11) Refer to page 3- - 10. Prerequisites 1. Prepare for the test: a. Set the generator controls: Frequency .
Page 60 Performance Tests d. Modify the default settings: H Press the Frequency/Channel key on the front panel. H The Center Freq menu item is selected by default. Set the frequency to 100 MHz using the numeric keypad. H Press the Span key on the front panel. H The Span menu item is selected by default.
Page 61 Performance Tests 5. Modify the analyzer controls: a. Press the Amplitude key on the front panel. b. The Ref Level menu item is selected by default. Set the reference level to 0 dBm using the general purpose knob. c. Make sure that RF Att is set to 30 dB. 6.
Page 62 Performance Tests Check Level Linearity One signal generator (Item 1) Equipment Required One spectrum analyzer (Item 5) One power meter (Item 7) One power sensor (Item 8) One 50 Ω N-N coaxial cable (Item 11) Refer to page 3- - 10. Prerequisites 1.
Page 63 Performance Tests 3. Determine the reference power in +10 to - -30 dBm: a. Measure the power and record it as Pr0. b. Set the signal generator amplitude from 0 to - -30 dBm in 10 dB steps and measure the power as Pr1 to 4, respectively. Signal generator amplitude Reference power +10 dBm 0 dBm...
Page 64 Performance Tests 5. Set the reference offset: a. Set the spectrum analyzer control: Average ....b. Measure the peak power Ppr using the maker peak. c.
Page 65: Table 3- 6: Level Linearity Test Result
Performance Tests c. Modify the RSA3408B analyzer controls: Center frequency ..100 MHz Span ....5 MHz Reference level .
Page 66 Performance Tests Spurious Response Checks These procedures check the spurious-related characteristics and are listed as checked in Specifications of the RSA3408B Technical Reference. Check 3 Order Equipment Two signal generators (Item 2 (or 3) and Item 4) Required Intermodulation Distortion One power combiner (Item 9) Three 50 Ω...
Page 67 Performance Tests c. Set the signal generator (Item 2) controls: Frequency ....1999.85 MHz Level ....0 dBm ALC BW .
Page 68 Performance Tests g. Modify the generator output level: H Press Markers: A or " to place the marker on the signal of 1999.85 MHz. H Adjust the generator (Item 2) output level so that the signal level is - -10 dBm. H Press Markers: A or "...
Page 69 Performance Tests Check Displayed Average None Equipment Noise Level Required Prerequisites Refer to page 3- - 10. 1. Prepare for the test: a. Initialize the analyzer: H Press the System key on the front panel. H Press the Reset All to Factory Defaults side key. RSA3408B b.
Page 70 Performance Tests H Press Trace/Avg > Trace 1 Type... > Average. H Press the Number Of Averages side key and set the value to 50. H Press Measure > Channel Power > Meas Setup. H Press the Channel Bandwidth side key and set the value to 1 MHz using the general purpose knob.
Page 71 Performance Tests 5. Check noise at 7 GHz in the RF3 band: a. Modify the analyzer control: H Press the Frequency/Channel key on the front panel. H The Center Freq menu item is selected by default. Set the frequency to 7 GHz using the general purpose knob. b.
Page 72 Performance Tests Check Residual Response None Equipment Required Prerequisites Refer to page 3- - 10. 1. Prepare for the test: a. Initialize the analyzer: H Press the System key on the front panel. H Press the Reset All to Factory Defaults side key. RSA3408B b.
Page 73 Performance Tests 2. Check residual response in the baseband: a. Measure residual response: H Press Scale/Lines (front panel) > View Lines... H Press the Show Line side key to select Vertical. H Press the Number Of Line key to select 1. H The Line1 menu item is selected by default.
Page 74 Performance Tests 4. Check residual response in the RF2 band: a. Modify the analyzer controls: H Press the Frequency/Channel key on the front panel. H The Center Freq menu item is selected by default. Set the frequency to 5 GHz using the numeric keypad. b.
Page 75 Performance Tests Check Spurious Response One signal generator (Item 2 or 3) Equipment Required One 50 Ω N-N coaxial cable (Item 11) Refer to page 3- - 10. Prerequisites 1. Prepare for the test: a. Initialize the analyzer: H Press the System key on the front panel. H Press the Reset All to Factory Defaults side key.
Page 76 Performance Tests RSA3408B Signal generator Output 50 Ω N-N coaxial cable 2. Check spurious response: a. Modify the generator controls: Set the generator output frequency to the value as shown in Table 3- -7 (initially 25 MHz). b. Modify the analyzer controls: H Press the Frequency/Channel key on the front panel.
Page 77: Table 3- 7: Spurious Measurement
Performance Tests d. Repeat substeps a through c until all frequency settings listed in Table 3- -7 are checked. Table 3- 7: Spurious measurement Band Frequency Spurious response Baseband 25 MHz - - 73 dBc 2 GHz - - 73 dBc 5 GHz - - 70 dBc 7 GHz...
Page 78 Performance Tests Test Record Photocopy the following test record pages and use them to record the perfor- mance test results for your analyzer. 3- 52 RSA3408B Analyzer Service Manual...
Page 79 Performance Tests RSA3408B 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 5,000,002.0 kHz 7 GHz...
Page 80 Performance Tests Input attenuator setting uncertainty test Attenuation Measurement (P Low limit Test result (P High limit 0 dB 5 dB - - 0.2 dB +0.2 dB 10 dB - - 0.2 dB +0.2 dB 15 dB - - 0.2 dB +0.2 dB 20 dB - - 0.2 dB...
Page 81 Performance Tests Displayed average noise level test Frequency Low limit Test result High limit 10 MHz - - 151 dBm/Hz 2 GHz - - 150 dBm/Hz 3 GHz - - 150 dBm/Hz 7 GHz - - 142 dBm/Hz Residual response test Band Frequency range Low limit...
Page 82 Performance Tests 3- 56 RSA3408B Analyzer Service Manual...
Page 83 Adjustment Procedures This section contains information needed to manually adjust the RSA3408B 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 H The procedures for adjusting the analyzer Purpose This procedure returns the analyzer to conformance with its Warranted Charac-...
Page 84: Table 4- 1: Test Equipment
Adjusting the signal generator Uncertainty of calibration factor data: Agilent E4412A output level <2% (RSS) BNC cable 50 Ω, 36 in, male-to-male BNC Tektronix part number Signal interconnection (five required) connectors 012-1341-XX 10. N-N cable 50 Ω, 36 in, male-to-male N...
Page 85 4- - 13 generators (Items 1, 2, and 3) 18. AWG520 setup disk 3.5 inch DOS-compatible floppy disk, Tektronix part number Setting up the AWG520 containing the AWG520 setting and 063- - 3680- - 00 waveform generator (Item 5) waveform files Use this instrument only.
Page 86 Adjustment Procedures Storing Cal Factors in the If you use an Agilent 437B power meter to create flatness correction files for the Power Meter signal generators (Items 1, 2, and 3), you have to store the calibration factors for a power sensor in the power meter. There are two ways to store calibration factors: H Storing calibration factors manually H Storing calibration factors through the analyzer...
Page 87: Figure 4- 1: Hookup For Storing The Cal Factors In The Power Meter
Adjustment Procedures 2. Install the hookup and preset the instrument controls: a. Turn off the power meter and the analyzer. b. Connect the GPIB cables on the power meter and the analyzer rear panel. c. Connect a mouse and a keyboard to the analyzer. d.
Page 88 Adjustment Procedures Making Flatness The auto performance verification and calibration need flatness floppy disks for Correction Files the signal generators (Items 1, 2, and 3). The following procedure measures flatness correction data for the specified signal generator and saves the data to a floppy disk.
Page 89: Figure 4- 2: Initial Test Hookup
Adjustment Procedures Procedure 1 Creates or updates the flatness correction file for one signal generator (Item 3), which covers all measurement bands: Baseband, RF1, RF2, and RF3. One signal generator (Item 3) Equipment Required One power meter (Item 7) One power sensor (Item 8) One N-N cable (Item 10) Two GPIB cables (Item 11) One 10 dB attenuator (Item 13)
Page 90 Adjustment Procedures c. Connect the signal generator output through a 50 Ω N-N coaxial cable followed by a 10 dB attenuator and an N adapter to the power sensor input. d. Connect the GPIB cables on the signal generator, the power meter, and the analyzer rear panel.
Page 91: Figure 4- 3: Hookup For Calibrating The Power Sensor
Adjustment Procedures Power meter Power reference output Figure 4- 3: Hookup for calibrating the power sensor b. Press the Sensor Cal side key to perform zero adjustment and calibra- tion for the sensor. 5. Perform the flatness measurement for the generator: a.
Page 92: Figure 4- 4: Initial Test Hookup
Adjustment Procedures Procedure 2 Creates or updates the flatness correction file for two signal generators: Item 1, which covers the baseband and RF1 band, and Item 2, which covers the RF2 and RF3 bands. Equipment One signal generator (Item 1 or 2) Required One power meter (Item 7) One power sensor (Item 8)
Page 93 Adjustment Procedures c. Connect the signal generator output through a 50 Ω N-N coaxial cable followed by a 10 dB attenuator and an N adapter to the power sensor input. d. Connect the GPIB cables on the signal generator, the power meter, and the analyzer rear panel.
Page 94: Figure 4- 5: Hookup For Calibrating The Power Sensor
Adjustment Procedures 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 4- -5). Power meter Power reference output Figure 4- 5: Hookup for calibrating the power sensor b.
Page 95 Adjustment Procedures Making Spurious The auto performance verification and calibration need the spurious floppy disks Correction Files for the signal generators (Items 1, 2, and 3). The following procedures measure the spurious correction data for the specified signal generator and saves the data to a floppy disk.
Page 96 Adjustment Procedures a. Power off the RSA3408B 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. d.
Page 97: Table 4- 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 98: Figure 4- 6: Uncal Display
Adjustment Procedures Self Calibration Perform these routines to optimize the analyzer performance: H Gain calibration H Center offset calibration H DC offset calibration Each item is explained in this section. Equipment None Required Prerequisites Power on the analyzer and allow a 20 minute warm-up before doing this procedure.
Page 99: Figure 4- 7: Calibration Menu
Adjustment Procedures To run the gain calibration, do the following: NOTE. When you run the gain calibration during signal acquisition, the calibration begins after the acquisition is completed. 1. Press the Cal key on the front panel (see Figure 4- -7). 2.
Page 100: Figure 4- 8: Center Offset
Adjustment Procedures Center Offset Calibration When you display a spectrum and no input signal is present, a spurious emission at the center frequency may appear regardless of frequency settings. The center offset calibration cancels those spurious emissions. If the spurious emission is too obvious when you narrow the span, run the calibration.
Page 101: Figure 4- 9: Dc Offset
Adjustment Procedures DC Offset Calibration The DC offset calibration cancels DC offset that appears at 0 Hz in the baseband. When you change the amplitude setting and the DC offset is too obvious, run the DC offset calibration. When DC offset appears at 0 Hz in the baseband, run the calibration.
Page 102: Figure 4- 10: Auto Calibration Initial Screen
Adjustment Procedures Auto Calibration The auto calibration uses internal routines to adjust gain, flatness, and spurious response of the analyzer. It is divided into four groups due to signal connections. H 10 MHz reference calibration H All band calibration H IF flatness (wide/IQ) calibration H IQ gain calibration (Option 03 only) Use the service Cal menu and procedure described below to set parameters and perform the tests.
Page 103: Table 4- 3: Calibration Items
Adjustment Procedures Table 4- 3: Calibration items Calibration group Calibration item Description Execution side key 10 MHz reference 10 MHz internal reference output frequency 10 MHz Reference All band Gain W Gain in the baseband, RF1, RF2, and RF3 wideband All Band Gain N Gain in RF1, RF2, and RF3 narrowband...
Page 104 Adjustment Procedures NOTE. You can select the calibration frequency band using the BB, BB+RF1, RF2+RF3, and RF1+RF2+RF3 side keys described below. IF Flatness Wide/IQ. Performs the IF flatness (wide/IQ) calibration. IQ Gain. Option 03 only. Performs the IQ gain calibration. 10MHz Reference.
Page 105 Adjustment Procedures 10 MHz Reference One signal generator (Item 1 or 3) Equipment Calibration Required One frequency counter (Item 6) One 50 Ω BNC coaxial cable (Item 9) One 50 Ω N-N coaxial cable (Item 10) One GPIB cable (Item 11) One RF attenuator (Item 13) Prerequisites Refer to page 4- - 1...
Page 106 Adjustment Procedures 2. Enter the calibration menu: a. Press Service... > Password in the Cal menu. b. Enter 270833 and then press Enter using the numeric keypad. c. Press the Cal side key. d. Set the GPIB address of the generator: H Press the Config...
Page 107 Adjustment Procedures All Band Calibration Use the following procedure to perform the auto calibration. STOP. Select either of these two procedures, depending on the signal genera- tor(s) you use: H Procedure 1 below: Uses one signal generator, Item 3, which covers all measurement bands (Baseband, RF1, RF2, and RF3).
Page 108 Adjustment Procedures a. Power off the RSA3408B 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. d.
Page 109 Adjustment Procedures Procedure 2. Performs the all band calibration using two signal generators: Item 1, which covers the baseband and RF1 band and Item 2, which covers the RF2 and RF3 bands. Equipment Two signal generators (Items 1 and 2) Required One 50 Ω...
Page 110 Adjustment Procedures 2. Enter the calibration menu: a. Press Service... > Password in the Cal menu. b. Enter 270833 and then press Enter using the numeric keypad. c. Press the Cal side key. d. Set the GPIB address of the generator: H Press the Config...
Page 111 Adjustment Procedures IF Flatness (Wide/IQ) One signal generator (Item 4) Equipment Calibration Required Five 50 Ω BNC coaxial cables (Item 9) One 50 Ω N-N coaxial cable (Item 10) One GPIB cable (Item 11) One RF attenuator (Item 13) Refer to page 4- - 1 Prerequisites Warm up the analyzer for more than one hour to stabilize the bandpass filter (YTF).
Page 112 Adjustment Procedures d. Connect the following connectors using 50 Ω BNC coaxial cables: H REF OUT of the analyzer to 10 MHz reference input of the generator H I+ INPUT of the analyzer to I output of the generator H I- - INPUT of the analyzer to I output of the generator H Q+ INPUT of the analyzer to Q output of the generator H Q- - INPUT of the analyzer to Q output of the generator e.
Page 113 Adjustment Procedures IQ Gain Calibration One waveform generator (Item 5) Equipment (Option 03 Only) Required One 50 Ω BNC coaxial cable (Item 9) GPIB cable (Item 11) Two 50 Ω terminators (Item 12) Prerequisites Refer to page 4- - 1 1.
Page 114 Adjustment Procedures d. Set the GPIB address of the generator: H Press the Config... side key. H Press the AWG Address side key and set the generator address. H Press the Cancel- -Back side key. 3. Perform the IQ gain calibration in all bands: a.
Page 115 Adjustment Procedures Reconfiguration of RF Modules The following procedures update the down-converter configuration file when replacing the RF3 module and/or YTF unit. STOP. Before doing the following procedures, note the gain and offset values which are indicated on the front surface of the module. Reconfiguration of the When replacing the RF3 module, do the following procedure.
Page 116: Figure 4- 11: Test Hookup
Adjustment Procedures RSA3408B Signal generator Output 50 Ω N-N coaxial cable Figure 4- 11: Test hookup c. Initialize the analyzer: H Press the System key on the front panel. H Press the Reset All to Factory Defaults side key. d. Modify the default settings: H Press the Span key on the front panel.
Page 117: Figure 4- 12: Test Hookup
Adjustment Procedures Reconfiguration of the When replacing the YTF unit, do the following procedure: YTF Unit One signal generator (Item 1) Equipment Required One 50 Ω N-N coaxial cable (Item 10) 1. Modify the YTF unit DAC setting: a. Press the Cal key on the front panel. b.
Page 118 Adjustment Procedures c. Initialize the analyzer: H Press the System key on the front panel. H Press the Reset All to Factory Defaults side key. d. Modify the default settings: H Press the Frequency/Channel key on the front panel. H With the Center Freq side key, set the frequency to 6.5 GHz using the numeric keypad.
Page 119 Maintenance This section contains the information needed to do periodic and corrective maintenance on the RSA3408B 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. H Inspection and Cleaning —...
Page 120 Maintenance Preparation Before servicing this product, read the Safety Summary and Introduction at the front of the manual and the following ESD information. CAUTION. Static discharge can damage any semiconductor component in this analyzer. Preventing ESD When performing any service that requires internal access to the analyzer, adhere to the following precautions to avoid damaging internal modules and their components due to electrostatic discharge (ESD).
Page 121: Table 5- 1: Relative Susceptibility To Static-Discharge Damage
Maintenance Susceptibility to ESD Table 5- -1 lists the relative susceptibility of various classes of semiconductors. Static voltages of 1 kV to 30 kV are common in unprotected environments. Table 5- 1: Relative susceptibility to static-discharge damage Relative susceptibility Semiconductor classes levels MOS or CMOS microcircuits or discrete circuits, or linear microcircuits with MOS inputs (most sensitive)
Page 122 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. 5- 4 RSA3408B Analyzer Service Manual...
Page 123: Table 5- 2: External Inspection Check List
Maintenance Inspection — Exterior. Inspect the outside of the analyzer for damage, wear, and missing parts, using Table 5- -2 as a guide. Analyzers that appear to have been dropped or otherwise abused should be checked thoroughly to verify correct operation and performance.
Page 124: Table 5- 3: Internal Inspection Check List
(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. 5- 6 RSA3408B Analyzer Service Manual...
Page 125 Removal and Installation Procedures This subsection contains procedures for removal and installation of all mechani- cal and electrical modules. Any electrical or mechanical assembly, or part listed in Section 10 of this manual is a module. Preparation WARNING. Before doing this or any other procedure in this manual, read the Safety Summary found at the beginning of this manual.
Page 126 Removal and Installation Procedures List of Modules Section 10 lists all modules. General Instructions STOP. READ THESE GENERAL INSTRUCTIONS BEFORE REMOVING A MODULE. First read over the Summary of Procedures that follows to understand how the procedures are grouped. Then read Equipment Required for a list of the tools needed to remove and install modules in this analyzer.
Page 127: Table 5- 4: Summary Of Procedures
Removal and Installation Procedures Summary of Procedures The procedures are described in the order in which they appear in this section. In addition, you can look up any procedure for removal and reinstallation of any module in the Table of Contents of this manual. The Access Procedure on page 5- -21 first directs you to the procedure(s) (if any) that are required to access the module to be serviced, then it directs you to the procedure to remove that module.
Page 128: Table 5- 5: Tools Required For Module Removal
All equipment required to remove and reinstall a module are listed in the first step of each procedure. Table 5- 5: Tools required for module removal Item Tektronix part number Name Description Screwdriver handle...
Page 129: Figure 5- 1: Analyzer Orientation
Removal and Installation Procedures Analyzer Orientation Figure 5- -1 shows how the sides of the analyzer are referenced in this manual. DOWN Figure 5- 1: Analyzer orientation 5- 11 RSA3408B Analyzer Service Manual...
Page 130: Figure 5- 2: External Modules
Removal and Installation Procedures Rear foot Cabinet Handle Foot Flip stand Line cord Front cushion Foot pad Figure 5- 2: External modules 5- 12 RSA3408B Analyzer Service Manual...
Page 131: Figure 5- 3: Rf Modules
Removal and Installation Procedures RF6 module RF5 module RF4 module RF3 module RF2 module Figure 5- 3: RF modules 5- 13 RSA3408B Analyzer Service Manual...
Page 132: Figure 5- 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 5- 4: CPU board and disk modules 5- 14 RSA3408B Analyzer Service Manual...
Page 133: Figure 5- 5: Removable Hard Disk Modules (Option 06)
Removal and Installation Procedures 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 5- 5: Removable hard disk modules (Option 06) 5- 15 RSA3408B Analyzer Service Manual...
Page 134: Figure 5- 6: Motherboard And Daughterboards
Removal and Installation Procedures A70 DC power board A42 DIFP board A10 A/D board A50 motherboard Figure 5- 6: Motherboard and daughterboards 5- 16 RSA3408B Analyzer Service Manual...
Page 135: Figure 5- 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 5- 7: Bottom modules - Power supply 5- 17 RSA3408B Analyzer Service Manual...
Page 136: Figure 5- 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 5- 8: Bottom modules - RF1 5- 18 RSA3408B Analyzer Service Manual...
Page 137: Figure 5- 9: Front Panel Modules
Removal and Installation Procedures Front sub-panel Inverter RF input connector 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 5- 9: Front panel modules 5- 19 RSA3408B Analyzer Service Manual...
Page 138: Figure 5- 10: Chassis Modules
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 5- 10: Chassis modules 5- 20 RSA3408B Analyzer Service Manual...
Page 139: Figure 5- 11: Guide To Removal Procedures
Removal and Installation Procedures Access Procedure When you have identified the module to be removed for service, read General Instructions found earlier in this section. Then use the flowchart in Figure 5- -11 to determine which procedures to use for removing the module. The removal procedures end with reinstallation instructions.
Page 140: Procedures For External Modules
Removal and Installation Procedures Procedures for External Modules Read the Access Procedure on page 5- -21 before proceeding. The procedures are presented in the following order: H Line cord H Cabinet H Front cushion H Cabinet modules Line Cord 1. Orient the analyzer: Set the analyzer so its bottom is down on the work surface and its rear is facing you.
Page 141: Figure 5- 12: Line Cord And Cabinet Removal
Removal and Installation Procedures Figure 5- 12: Line cord and cabinet removal Front Cushion 1. Assemble equipment and locate modules to be removed: a. You will need a #2 Phillips screwdriver (Items 1 and 3). b. Locate the front cushion in the External modules diagram, Figure 5- -2. 2.
Page 142: 2? Cabinet Modules P.5
Removal and Installation Procedures Figure 5- 13: Front cushion removal Cabinet Modules 1. Assemble equipment and locate modules to be removed: a. Have a pair of needle-nose pliers handy (Item 14). b. Locate the modules to be removed in the locator diagram External Modules (see Figure 5- -2).
Page 143 Removal and Installation Procedures 4. Remove the handle caps: a. Insert the retaining ring pliers (Item 15) into the opening created in the handle cap when you removed the handle. b. While using the pliers to expand the handle cap outward, grasp it and snap it away from the cabinet.
Page 144 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 5- 14: Cabinet modules removal 5- 26 RSA3408B Analyzer Service Manual...
Page 145: Procedures For Rf Modules
Removal and Installation Procedures Procedures for RF Modules Read the Access Procedure on page 5- -21 before proceeding. The procedures are presented in the following order: H RF2 module H RF3 module H RF4 module H RF5 module H RF6 module RF2 Module 1.
Page 146: Rf4 Module P.5
Removal and Installation Procedures 3. Remove the RF3 module: See Figure 5- -15. Also see Figure 5- -37 on page 5- -75 for the cable interconnection. a. Using a inch wrench, disconnect the SMA cable W201 on the RF3 module. b.
Page 147 Removal and Installation Procedures To REF OUT 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 5- 15: RF modules removal 5- 29 RSA3408B Analyzer Service Manual...
Page 148: 3? Rf5 Module P.5
Removal and Installation Procedures RF5 Module 1. Assemble equipment and locate module to be removed: a. You will need a #2 Phillips screwdriver. b. Locate the RF5 module in the locator diagram RF Modules, Figure 5- -3 on page 5- -13. 2.
Page 149: Cpu Board P.5
Removal and Installation Procedures Procedures for CPU Board and Disk Modules Read the Access Procedure on page 5- -21 before proceeding. The procedures are presented in the following order: H CPU board H Hard disk drive H Floppy disk drive H A62 Front connection board H Removable hard drive (Option 06) CPU Board...
Page 150: Fan
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 5- 16: CPU board removal 5- 32 RSA3408B Analyzer Service Manual...
Page 151 Removal and Installation Procedures Hard Disk Drive 1. Back up the user files: Use the Windows Backup tool to back up files stored on the hard disk. The Backup tool is located in the System Tools folder in the Accessories folder. Start the tool and determine which files and folders to back up.
Page 152 Removal and Installation Procedures Disk bracket 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 5- 17: Disk module removal 5- 34 RSA3408B Analyzer Service Manual...
Page 153 Removal and Installation Procedures Floppy Disk Drive 1. Assemble equipment and locate module to be removed: a. You will need a screwdriver with Phillips #1 and #2 tips. (Items 1, 2, and 3) b. Locate the floppy disk drive in the CPU board and disk modules diagram, Figure 5- -4 on page 5- -14.
Page 154 Removal and Installation Procedures Removable Hard Drive For Option 06 removable hard drive, use the following procedure to remove the (Option 06) disk modules. 1. Assemble equipment and locate module to be removed: a. You will need a #2 Phillips screwdriver (Items 1 and 3), plier (Item 17), and 5 mm wrench (Item 11).
Page 155 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 5- 18: Hard drive cartridge removal 5- 37 RSA3408B Analyzer Service Manual...
Page 156 Removal and Installation Procedures 6. Remove the hard disk: See Figure 5- -19. a. Remove the screws with washers and supports that hold the hard disk drive to the inside HDD bracket. b. Remove the screws securing the left and right stopper brackets to the hard disk drive.
Page 157 Removal and Installation Procedures Back bracket Edging (63 mm L) Front bracket Edging (57 mm L) Figure 5- 20: Outside HDD bracket assembly removal 8. Remove the disk unit: See Figure 5- -21. a. Remove the board stopper bracket and the memory support bracket, if not yet.
Page 158 Removal and Installation Procedures Stopper bracket Disk bracket Floppy disk drive Front connection board Shield bracket Figure 5- 21: Disk unit removal 5- 40 RSA3408B Analyzer Service Manual...
Page 159 Removal and Installation Procedures Procedures for Motherboard and Daughterboards Read the Access Procedure on page 5- -21 before proceeding. The procedures are presented in the following order: H A10 A/D board H A42 DIFP board H A70 DC power board H A50 motherboard A10 A/D Board 1.
Page 160 Removal and Installation Procedures 2. Orient the analyzer: Set the analyzer so its bottom is down on the work surface and its front is facing you. 3. Remove the A42 DIFP board: See Figure 5- -22. Also see Figure 5- -37 on page 5- -75 for the cable interconnection.
Page 161 Removal and Installation Procedures Option 03 only W360 Board support bracket W610 W611 Rear support bracket RF6 module A10 A/D board Fan power GPIB J300 J302 J410 A42 DIFP board A70 DC power board Figure 5- 22: Daughter boards removal 5- 43 RSA3408B Analyzer Service Manual...
Page 162 Removal and Installation Procedures A50 Motherboard 1. Assemble equipment and locate module to be removed: a. You will need a #2 Phillips screwdriver (Items 1 and 3). b. Locate the A50 motherboard in locator diagram Motherboard and daughterboards, Figure 5- -6 on page 5- -16. c.
Page 163 Removal and Installation Procedures Figure 5- 23: Motherboard removal 5- 45 RSA3408B Analyzer Service Manual...
Page 164 Removal and Installation Procedures Procedures for Power Supply Modules on the Instrument Bottom Read the Access Procedure on page 5- -21 before proceeding. The procedures are presented in the following order: H Power supply 1 and 2 H A71 AC power board H Power supply 3 (standby power) H Line filter H Principal power switch...
Page 165 Removal and Installation Procedures W80 to CN53 W83 to CN51 W82 to CN61 and CN81 W94 to CN1 W81 to CN53 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...
Page 166 Removal and Installation Procedures A71 AC Power Board 1. Assemble equipment and locate module to be removed: a. You will need a #2 Phillips screwdriver (Items 1 and 3). b. Locate the A71 AC power board in the locator diagram Bottom modules - - Power supply, Figure 5- -7 on page 5- -17.
Page 167 Removal and Installation Procedures W93 to J110 W94 to J130 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 5- 25: Power supply modules removal 5- 49 RSA3408B Analyzer Service Manual...
Page 168 Removal and Installation Procedures Line Filter 1. Assemble equipment and locate module to be removed: a. Have a screwdriver with Phillips #1 and #2 tips handy. (Items 1, 2, and 3) b. Locate the line filter in the locator diagram Bottom modules - - Power supply, Figure 5- -7 on page 5- -17.
Page 169 Removal and Installation Procedures Procedures for RF1 Modules on the Instrument Bottom Read the Access Procedure on page 5- -21 before proceeding. The procedures are presented in the following order: H A100 Cal generator board H Step attenuator H Input relay, band relay, and bandpass filter (YTF) A100 Cal Generator Board 1.
Page 170 Removal and Installation Procedures 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 5- 26: RF1 modules removal - 1 5- 52 RSA3408B Analyzer Service Manual...
Page 171 Removal and Installation Procedures 3. Remove the step attenuator: a. Unplug the cable at J200 on the A100 Cal generator board, if not yet. b. Using a inch wrench, disconnect the SMA cable W121 from the step attenuator. c. Remove the four screws securing the attenuator plate to the main chassis. d.
Page 172 Removal and Installation Procedures 5. Remove the bandpass filter (YTF): a. Using an SMA torque driver, disconnect the SMA cables W106 and W123 from the 3 dB attenuators at both sides of the bandpass filter. b. Using a inch wrench, disconnect the 3 dB attenuators from the filter. c.
Page 173 Removal and Installation Procedures 6. Remove the input relay: a. Using a #1 Phillips screwdriver, remove the two screws securing the input relay to the bracket. b. Using a inch wrench, disconnect the SMA cable W101 from the RF input. c.
Page 174 Removal and Installation Procedures Procedures for Front Panel Modules Read the Access Procedure on page 5- -21 before proceeding. The procedures are presented in the following order: H Front-panel assembly H Rotary encoder H Front Bezel, Menu Buttons, and Front Panel H A60 Front key board H A61 Power switch board H Preamp power connector...
Page 175 Removal and Installation Procedures Figure 5- 28: Front panel assembly removal Rotary Encoder 1. Assemble equipment and locate module to be removed: a. You will need a 12 mm nutdriver (Item 8), and a inch hex wrench (Item 12). b. Locate the rotary encoder in Figure 5- -9 on page 5- -19. 2.
Page 176 Removal and Installation Procedures Front bracket A60 Front key board Preamp power from J810 on the motherboard Front panel keys When removing the front bezel, grasp its back edge and vigorously flex it upward before pulling it forward. When removing the A61 power switch board, spread the catches on the left and right sides of the front bracket before pulling the board backward.
Page 177 Removal and Installation Procedures A60 Front Key Board 1. Assemble equipment and locate module to be removed: a. You will need a #2 Phillips screwdriver (Items 1 and 3). b. Locate the A60 Front key board in the locator diagram Front panel modules, Figure 5- -9 on page 5- -19.
Page 178 Removal and Installation Procedures Preamp Power Connector 1. Assemble equipment and locate module to be removed: a. You will need a 14 mm nutdriver (Items 9). b. Locate the preamp power connector in the locator diagram Front panel modules, Figure 5- -9 on page 5- -19. 2.
Page 179 Removal and Installation Procedures 2. Orient the analyzer: Set the analyzer so its bottom is down on the work surface and its front is facing you. 3. Remove the inverter: See Figure 5- -30. a. Unplug the cables at CN1 and CN2 on the inverter. b.
Page 180 Removal and Installation Procedures Procedures for Chassis Modules Read the Access Procedure on page 5- -21 before proceeding. The procedures are presented in the following order: H Fan H Side panel assembly H Board guide bracket H Rear panel 1. Assemble equipment and locate module to be removed: a.
Page 181 Removal and Installation Procedures 4. Remove the side panel assembly: See Figure 5- -31. a. Remove the three screws securing the shield bracket through side panel to the main chassis. b. Remove the two screws securing the side panel to the main chassis. Pull the side panel away.
Page 182 Removal and Installation Procedures Board Guide Bracket 1. Assemble equipment and locate module to be removed: a. You will need a #2 Phillips screwdriver (Items 1 and 3). b. Locate the board guide bracket in the Chassis modules diagram, Figure 5- -10 on page 5- -20. c.
Page 183 Removal and Installation Procedures 3. Remove the board guide bracket: Remove the four screws securing the board guide bracket to the main chassis. Lift the bracket up and away. 4. Remove the PC board guide bracket: Remove the two screws securing the PC board guide bracket to the main chassis.
Page 184 Removal and Installation Procedures 4. Remove the GPIB connector: See Figure 5- -33. a. Unplug the cable at J410 on the A70 DC power board. Refer to the A70 DC Power Board procedure on page 5- -42. b. Using a flat-bladed screwdriver, remove the two screws securing the connector to the rear panel.
Page 185 Troubleshooting This subsection contains information and procedures designed to help you isolate faulty modules in the analyzer. If a module needs to be replaced, follow the Removal and Installation Procedures located in this section. Troubleshooting Procedure This subsection consists of the following flowcharts: H Figure 5- -34: Troubleshooting Procedure 1 —...
Page 186 Troubleshooting NOTE. Turn off the analyzer using the: Use this procedure to determine H On/Standby Switch when Windows XP is running. if an analyzer problem is caused H Principal Power Switch when Windows XP is not booted. by the low voltage power supply. Check the power supply voltages on Replace the failed power supply module.
Page 187 Troubleshooting This procedure helps you determine whether the LCD display or the CPU module is bad. Connect an external display to the VGA Turn on the analyzer. output connector on the side panel. Then reboot the analyzer. Does the initial screen the screen the BIOS setup appear correctly?
Page 188 Troubleshooting This procedure helps you To page 5- - 71 determine whether the signal path is bad. Reconnect the W611 cable. Reconnect the W360 cable. Baseband check Unplug the coaxial cable W124 of Unplug the coaxial cable W360 on Set the analyzer as follows: the band relay on the bottom (See the RF3 module (See Figure 5- - 37).
Page 189 Troubleshooting From page 5- - 70 To page 5- - 72 RF1 band check Modify the signal generator controls as follows: Frequency: 10 MHz Level: - - 30 dBm Modify the signal generator controls as follows: the level of Output: Off spurious signal at center screen - - 95 dBm Change the reference level from...
Page 190 Troubleshooting From page 5- - 71 To page 5- - 73 Reconnect the W32 cable. Unplug the coaxial cable W201 on Unplug the coaxial cable W250 on the RF3 module (See Figure 5- - 37). the RF2 module (See Figure 5- - 37). Using another spectrum analyzer, Using another spectrum analyzer, measure the output at the connector.
Page 191 Troubleshooting From page 5- - 72 To page 5- - 74 Modify the signal generator RF2 band check controls as follows: Frequency: 100 MHz Level: - - 50 dBm Modify the analyzer controls as follows: Center frequency: 3.6 GHz Change the reference level from Span: 1 MHz - - 20 to - - 42 dBm in one dB step Reference level: 0 dBm...
Page 192 Troubleshooting From page 5- - 73 Span check Unplug the coaxial cable W307 on the RF3 module (See Figure 5- - 37). Using another spectrum analyzer, Modify the analyzer controls measure the output at the connector. as follows: Center frequency: 100 MHz Span: 36 MHz Reference level: 0 dBm the spectrum...
Page 193 Troubleshooting Rear TRIG TRIG Q- - I- - GPIB W620 W621 W560 DC power To fans DIFP W610 W360 W611 W503 W502 W250 To J400 on A100 To band relay W307 W124 W201 W106 To bandpass filter Front connection J700 J810 J710 LCD inverter...
Page 194 Troubleshooting Rear Power Line switch CN53 filter J902 CN51 J900 Power supply 1 CN61 J901 CN81 J100 J110 CN53 J912 Power supply 3 J120 J910 CN51 J130 Power supply 2 A71 AC power CN61 J911 J920 CN81 W123 W114A Band To RF3 relay A100 Cal generator...
Page 195: Table 5- 6: Normal Supply Voltages
Troubleshooting Table 5- 6: Normal supply voltages Board Connector Pin no. Normal Low limit High limit Power supply 1 CN51 +5 V +4.75 V +5.25 V +5 V +4.75 V +5.25 V +5 V +4.75 V +5.25 V CN61 +15 V +14.25 V +15.75 V - - 15 V...
Page 196: Table 5- 7: Test Point Voltages On A70
Troubleshooting Test points (from left to right) Upper: TP216 TP222 TP208 TP204 TP202 TP220 A70 DC power board Lower: TP214 TP210 TP212 TP218 TP200 TP206 J302 J300 J410 Power indicator LEDs Figure 5- 39: A70 DC power supply board Table 5- 7: Test point voltages on A70 Test point Normal voltage Low limit...
Page 197: Table 5- 8: Symptoms And Faulty Modules
Troubleshooting Table 5- 8: Symptoms and faulty modules Symptom (other functions are assumed to be normal) Possible faulty module No trigger signal is output from the TRIG OUT connector on A42 DIFP board the rear panel. Cannot triggered with an external trigger signal. A42 DIFP board No reference signal is output from the REF OUT connector on RF5 module...
Page 198 Troubleshooting Required Adjustments After Replacing Modules When you change the following parts or modules, readjustment and/or recalibra- tion is necessary. For details, refer to Adjustment Procedures. RF3 Module H You must change the gain and offset values of YTO Tune DAC in the DEBUG menu.
Page 199 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. 6- 1 RSA3408B Analyzer Service Manual...
Page 200 Diagrams 6- 2 RSA3408B Analyzer Service Manual...
Page 201 Trigger Trigger output output input input input output input 8 GHz down converter RF3 module RF2 module RF5 module RF6 module RF input A/D board DIFP board Digital I Digital Q output output RF4 module Probe power Local bus Motherboard GPIB controller PCI bridge Power supply...
Page 202 6- 4 RSA3408B Analyzer Service Manual...
Page 203 W560 2nd IF OUTPUT Programmable 3 dB 3 dB bandpass filter W621 att. att. RF3 module RF2 module RF5 module RF6 module 10 MHz REF (YTF) W307 W620 W123 OUTPUT W106 W250 W502 Gain W201 EXT REF W101 block Oscillator INPUT Step Band...
Page 204 6- 6 RSA3408B Analyzer Service Manual...
Page 205 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. Changes to Tektronix products are sometimes made to accommodate improved components as they become available and to give you the benefit of the latest improvements.
Page 206 670-7918-03 670-7918-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 207 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 208 Replaceable Parts Replaceable parts list Fig. & Tektronix Serial No. Serial No. index part number effective discont’d Name & description number 7- - 1 - - 1 200- - A524- - XX COVER,FRONT,WCA230A/280A - - 2 348- - A152- - XX...
Page 209 Replaceable Parts Option 06 Figure 7- 1: External modules 7- 5 RSA3408B Analyzer Service Manual...
Page 212 Replaceable Parts Replaceable parts list Fig. & Tektronix Serial No. Serial No. index part number effective discont’d Name & description number 7- - 3 - - 1 211- - 0945- - XX SCREW,MACHINE:M4X8MM L,STL,ZN- - C,CROSS REC - - 2 348- - 1433- - XX SHLD GASKET,ELEC:MESH TYPE,2.5MM OD,SI SPONGE CORE...
Page 213 Replaceable Parts Figure 7- 3: Front-panel assembly - 2 7- 9 RSA3408B Analyzer Service Manual...
Page 214 Replaceable Parts Replaceable parts list Fig. & Tektronix Serial No. Serial No. index part number effective discont’d Name & description number 7- - 4 - - 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...
Page 215 Replaceable Parts Figure 7- 4: RF modules 7- 11 RSA3408B Analyzer Service Manual...
Page 216 Replaceable Parts Replaceable parts list Fig. & Tektronix Serial No. Serial No. index part number effective discont’d Name & description number 7- - 5 - - 1 211- - 1028- - XX SCREW,MACHINE:M4X8MM L,PNH,STL,ZN- - C PL,CROSS REC,W/FLAT&LOCK WASHER - - 2...
Page 217 Replaceable Parts See Figure 7- - 6 for details. Included in #3. Figure 7- 5: Motherboard and daughterboards 7- 13 RSA3408B Analyzer Service Manual...
Page 218 Replaceable Parts Replaceable parts list Fig. & Tektronix Serial No. Serial No. index part number effective discont’d Name & description number 7- - 6 - - 1 065- - 0776- - XX DISK DRIVE ASSY;PRG 119- - 6832- - XX;RSA3408B W/PACKAGING...
Page 219 Replaceable Parts Figure 7- 6: Disk modules 7- 15 RSA3408B Analyzer Service Manual...
Page 220 Replaceable Parts Replaceable parts list Fig. & Tektronix Serial No. Serial No. index part number effective discont’d Name & description number 7- - 7 OPTION 06 ONLY - - 1 211- - A170- - XX SCREW,MACHINE;M3X15MM L,PNH,STL,ZN- - CM1,W/M- - PLAIN&SPLIT WASHER...
Page 221 Replaceable Parts See Figure 7- - 8 for details. Black sleeving See Figure 7- - 6- - 1. Figure 7- 7: Disk modules (Option 06) - 1 7- 17 RSA3408B Analyzer Service Manual...
Page 222 Replaceable Parts Replaceable parts list Fig. & Tektronix Serial No. Serial No. index part number effective discont’d Name & description number 7- - 8 OPTION 06 ONLY - - 1 407- - 5117- - XX BRACKET,CONNECTOR HANDLE,HDD - - 2 252- - 0719- - XX PLASTIC SH,CHAN;NULON,0.047X0.063 THK,1M L...
Page 223 Replaceable Parts Figure 7- 8: Disk modules (Option 06) - 2 7- 19 RSA3408B Analyzer Service Manual...
Page 224 Replaceable Parts Replaceable parts list Fig. & Tektronix Serial No. Serial No. index part number effective discont’d Name & description number 7- - 9 - - 1 211- - 0871- - XX SCREW,MACHINE:M3X6MM L,PNH,STL,MFZN- - C,CROSS REC W/FLAT&LOCK WASHER - - 2 119- - B128- - XX POWER SUPPLY:IN 85- - 265VAC,47- - 63HZ,OUT 5V15A,±12V/15V4A,24V2A,...
Page 225 Replaceable Parts Figure 7- 9: Bottom modules - Power supply 7- 21 RSA3408B Analyzer Service Manual...
Page 226 Replaceable Parts Replaceable parts list Fig. & Tektronix Serial No. Serial No. index part number effective discont’d Name & description number 7- - 10 - - 1 174- - C038- - XX CABLE ASSY,RF:SEMI- - RIGID,W121,ATT TO SW - - 2 211- - A273- - XX SCREW,MACHINE:M2.5X18 L,PNH,STL,NI PL,CROSS REC,W/FLAT(KOGATA)&...
Page 227 Replaceable Parts A150 A100 Figure 7- 10: Bottom modules - RF1 7- 23 RSA3408B Analyzer Service Manual...
Page 228 Replaceable Parts Replaceable parts list Fig. & Tektronix Serial No. Serial No. index part number effective discont’d Name & description number 7- - 11 - - 1 211- - 1028- - XX SCREW,MACHINE:M4X8MM L,PNH,STL,ZN- - C PL,CROSS REC W/FLAT&LOCK WASHER...
Page 229 Replaceable Parts W42, W43, W44, W45, W620, W621, W560 Figure 7- 11: Chassis modules - 1 7- 25 RSA3408B Analyzer Service Manual...
Page 230 Replaceable Parts Replaceable parts list Fig. & Tektronix Serial No. Serial No. index part number effective discont’d Name & description number 7- - 12 - - 1 211- - A004- - XX SCREW,MACHINE:M4X10MM L,PNH,STL,ZN- - C,CROSS REC,W/FLAT&LOCK WASHER - - 2 211- - 0871- - XX SCREW,MACHINE:M3X6MM L,PNH,STL,MFZN- - C,CROSS REC,W/FLAT&LOCK WASHER...
Page 231 Replaceable Parts Figure 7- 12: Chassis modules - 2 7- 27 RSA3408B Analyzer Service Manual...
Page 232 Replaceable Parts Replaceable parts list Fig. & Tektronix Serial No. Serial No. index part number effective discont’d Name & description number 7- - 13 RACKMOUNT - - 1 333- - 4538- - XX PANEL,FRONT BLANK PANEL FOR RACK - - 2...
Page 233 Replaceable Parts Figure 7- 13: Rackmount 7- 29 RSA3408B Analyzer Service Manual...
Page 234 Replaceable Parts Replaceable parts list Fig. & Tektronix Serial No. Serial No. index part number effective discont’d Name & description number STANDARD ACCESSORIES - - - - - - - - - - - - - - - - CABLE ASSY,PWR;3,18 AWG,92.0 L,TAN,60 DEGREE C,MC- - 6- - 3C/G X RIGHT ANGLE BME,10A/125V;SAFETY CONTROLLED(STANDARD CABLE - - SEE FIG 7- - 1- - 21)

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