Tektronix RSA3408B User manual

Service Manual
RSA3408B
8 GHz Real-Time Spectrum Analyzer
071-2366-00
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

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. Specifications and price change privileges reserved.
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
Contacting Tektronix
Tektronix, Inc.
14200 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA
For product information, sales, service, and technical support:
HIn North America, call 1-800-833-9200.
HWorldwide, visit www.tektronix.com to find contacts in your area.

Warranty 2
Tektronix warrants that this product will be free from defects in materials and workmanship for a period of one (1) year
from the date of shipment. If any such product proves defective during this warranty period, Tektronix, at its option, either
will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the
defective product. Parts, modules and replacement products used by Tektronix for warranty work may be new or
reconditioned to like new performance. All replaced parts, modules and products become the property of Tektronix.
In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the
warranty period and make suitable arrangements for the performance of service. Customer shall be responsible for
packaging and shipping the defective product to the service center designated by 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. Customer shall be responsible for paying all shipping charges, duties, taxes, and any
other charges for products returned to any other locations.
This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate
maintenance and care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting
from attempts by personnel other than Tektronix representatives to install, repair or service the product; b) to repair
damage resulting from improper use or connection to incompatible equipment; c) to repair any damage or malfunction
caused by the use of non-Tektronix supplies; or d) to service a product that has been modified or integrated with other
products when the effect of such modification or integration increases the time or difficulty of servicing the product.
THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THE PRODUCT IN LIEU OF ANY OTHER
WARRANTIES, EXPRESS OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’
RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY
PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL
NOT BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY
OF SUCH DAMAGES.

RSA3408B Analyzer Service Manual i
Table of Contents
General Safety Summary vii...................................
Service Safety Summary ix....................................
Preface xi...................................................
Manual Structure xi................................................
Manual Conventions xii..............................................
Related Documentation xii...........................................
Introduction xiii..............................................
Performance Check Interval xiii........................................
Strategy for Servicing xiii.............................................
Specifications
Theory of Operation
RF Input 2--1.......................................................
Down Converter 2--1.................................................
Digital Signal Processing 2--3..........................................
Power Supply 2--4...................................................
External Interface 2--5................................................
Performance Verification
Performance Verification Procedures 3--1.........................
Conventions 3--2....................................................
Brief Procedures 3--3...........................................
Functional Tests 3--4.................................................
Diagnostics 3--8.....................................................
Performance Tests 3--9.........................................
Prerequisites 3--10....................................................
Equipment Required 3--10..............................................
Auto Tests 3--12......................................................
Frequency Checks 3--21................................................
Noise Sideband Checks 3--25...........................................
Amplitude Checks 3--28...............................................
Spurious Response Checks 3--40.........................................
Test Record 3--52.....................................................
Adjustment Procedures
Requirements for Performance 4--1......................................
Equipment Required 4--2..............................................
Preparation 4--3.....................................................
Self Calibration 4--16..................................................
Auto Calibration 4--20.................................................
Reconfiguration of RF Modules 4--33.....................................

Table of Contents
ii RSA3408B Analyzer Service Manual
Maintenance
Related Maintenance Procedures 5--1....................................
Preparation 5--2.....................................................
Inspection and Cleaning 5--4...........................................
Removal and Installation Procedures 5--7.........................
Preparation 5--7.....................................................
Access Procedure 5--21................................................
Procedures for External Modules 5--22....................................
Procedures for RF Modules 5--27........................................
Procedures for CPU Board and Disk Modules 5--31..........................
Procedures for Motherboard and Daughterboards 5--41.......................
Procedures for Power Supply Modules on the Instrument Bottom 5--46..........
Procedures for RF1 Modules on the Instrument Bottom 5--51..................
Procedures for Front Panel Modules 5--56.................................
Procedures for Chassis Modules 5--62.....................................
Troubleshooting 5--67...........................................
Troubleshooting Procedure 5--67.........................................
Symptoms and Faulty Modules 5--78.....................................
Required Adjustments After Replacing Modules 5--80.......................
Diagrams
Replaceable Parts List
Parts Ordering Information 7--1.........................................
Using the Replaceable Parts List 7--3....................................

Table of Contents
RSA3408B Analyzer Service Manual iii
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 3--7......
Figure 3--4: Spectrogram display 3--7.............................
Figure 3--5: Diagnostic screen 3--8................................
Figure 3--6: Auto test initial screen 3--12............................
Figure 3--7: Performance test result display 3--16....................
Figure 3--8: Hookup for calibrating the power sensor 3--29............
Figure 3--9: Hookup for setting the signal generator output 3--29.......
Figure 3--10: Hookup for checking the absolute amplitude accuracy 3--30
Figure 4--1: Hookup for storing the cal factors in the power meter 4--5.
Figure 4--2: Initial test hookup 4--7...............................
Figure 4--3: Hookup for calibrating the power sensor 4--9............
Figure 4--4: Initial test hookup 4--10...............................
Figure 4--5: Hookup for calibrating the power sensor 4--12............
Figure 4--6: UNCAL display 4--16.................................
Figure 4--7: Calibration menu 4--17...............................
Figure 4--8: Center offset 4--18....................................
Figure 4--9: DC offset 4--19.......................................
Figure 4--10: Auto calibration initial screen 4--20....................
Figure 4--11: Test hookup 4--34...................................
Figure 4--12: Test hookup 4--35...................................
Figure 5--1: Analyzer orientation 5--11.............................
Figure 5--2: External modules 5--12................................
Figure 5--3: RF modules 5--13....................................
Figure 5--4: CPU board and disk modules 5--14.....................
Figure 5--5: Removable hard disk modules (Option 06) 5--15..........
Figure 5--6: Motherboard and daughterboards 5--16.................
Figure 5--7: Bottom modules -- Power supply 5--17...................
Figure 5--8: Bottom modules -- RF1 5--18...........................
Figure 5--9: Front panel modules 5--19.............................
Figure 5--10: Chassis modules 5--20...............................
Figure 5--11: Guide to removal procedures 5--21.....................
Figure 5--12: Line cord and cabinet removal 5--23...................

Table of Contents
iv RSA3408B Analyzer Service Manual
Figure 5--13: Front cushion removal 5--24..........................
Figure 5--14: Cabinet modules removal 5--26........................
Figure 5--15: RF modules removal 5--29............................
Figure 5--16: CPU board removal 5--32............................
Figure 5--17: Disk module removal 5--34...........................
Figure 5--18: Hard drive cartridge removal 5--37....................
Figure 5--19: Hard disk drive removal 5--38.........................
Figure 5--20: Outside HDD bracket assembly removal 5--39...........
Figure 5--21: Disk unit removal 5--40..............................
Figure 5--22: Daughter boards removal 5--43........................
Figure 5--23: Motherboard removal 5--45...........................
Figure 5--24: Power supply 1 and 2 removal 5--47....................
Figure 5--25: Power supply modules removal 5--49...................
Figure 5--26: RF1 modules removal -- 1 5--52........................
Figure 5--27: RF1 modules removal -- 2 5--54........................
Figure 5--28: Front panel assembly removal 5--57....................
Figure 5--29: Front panel modules removal 5--58....................
Figure 5--30: LCD display removal 5--61...........................
Figure 5--31: Fan and side panel removal 5--63......................
Figure 5--32: Board guide bracket removal 5--64.....................
Figure 5--33: Rear panel removal 5--65.............................
Figure 5--34: Troubleshooting procedure 1 — Power supply system 5--68
Figure 5--35: Troubleshooting procedure 2 — Display and CPU
system 5--69................................................
Figure 5--36: Troubleshooting procedure 3 — Signal path 5--70........
Figure 5--37: Top view of the instrument for cable interconnection 5--75.
Figure 5--38: Bottom view the instrument for cable interconnection 5--76
Figure 5--39: A70 DC power supply board 5--78.....................
Figure 6--1: Block diagram 6--3..................................
Figure 6--2: Interconnect diagram 6--5............................
Figure 7--1: External modules 7--5................................
Figure 7--2: Front-panel assembly -- 1 7--7.........................
Figure 7--3: Front-panel assembly -- 2 7--9.........................
Figure 7--4: RF modules 7--11....................................
Figure 7--5: Motherboard and daughterboards 7--13.................
Figure 7--6: Disk modules 7--15...................................
Figure 7--7: Disk modules (Option 06) -- 1 7--17......................

Table of Contents
RSA3408B Analyzer Service Manual v
Figure 7--8: Disk modules (Option 06) -- 2 7--19......................
Figure 7--9: Bottom modules -- Power supply 7--21...................
Figure 7--10: Bottom modules -- RF1 7--23..........................
Figure 7--11: Chassis modules -- 1 7--25.............................
Figure 7--12: Chassis modules -- 2 7--27............................
Figure 7--13: Rackmount 7--29....................................

Table of Contents
vi RSA3408B Analyzer Service Manual
List of Tables
Table 3--1: Span and RBW 3--6..................................
Table 3--2: Internal diagnostic program 3--8.......................
Table 3--3: Test equipment 3--10..................................
Table 3--4: Test item selection 3--13...............................
Table 3--5: Procedure for failed test item 3--19......................
Table 3--6: Level linearity test result 3--39..........................
Table 3--7: Spurious measurement 3--51...........................
Table 4--1: Test equipment 4--2..................................
Table 4--2: Compatibility of the spurious correction file 4--15.........
Table 4--3: Calibration items 4--21................................
Table 5--1: Relative susceptibility to static-discharge damage 5--3.....
Table 5--2: External inspection check list 5--5......................
Table 5--3: Internal inspection check list 5--6......................
Table 5--4: Summary of procedures 5--9..........................
Table 5--5: Tools required for module removal 5--10.................
Table 5--6: Normal supply voltages 5--77...........................
Table 5--7: Test point voltages on A70 5--78.........................
Table 5--8: Symptoms and faulty modules 5--79.....................