Tektronix WCA2UP-03 User manual

Instructions
WCA2UP-03 & RSA3UP-03 IQ Input Function
WCA230A & WCA280A
Portable Wireless Communication Analyzers
RSA3303A & RSA3308A
Real-Time Spectrum Analyzers
075-1268-02
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
075126802

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.

WCA2UP-03 & RSA3UP-03 Instructions
1
Kit Description
This kit provides parts and instructions to replace the A10 A/D board and add
Option 03 (IQ input function) to your WCA230A and WCA280A Portable
Wireless Communication Analyzers or RSA3303A and RSA3308A Real-Time
Spectrum Analyzers.
This document supports Tektronix modification ECR30645.
Products
WCA230A and WCA280A without Option 03
RSA3303A and RSA3308A without Option 03
Minimum Tool and Equipment List
Required tools and equipment Description
Screwdriver handle Accepts Phillps-driver bits
#1 Phillips tip Phillips-driver bit for #1 size screw heads
#2 Phillips tip Phillips-driver bit for #2 size screw heads
Kit Parts List
Fig. & index
number Quantity Part number Description
WCA2UP-03, RSA3UP-03
1-1 1ea 671-B158-55 CIRCUIT BD ASSY:A10
1-2 4 ea 131-6607-00 CON,RF,JACK:BNC
1-3 4 ea 174-B980-00 CABLE ASSY,RF:50OHM,COAX
1-4 8 ea 211-0871-00 SCREW,MACHINE:M3X6MM L
1-5 16 ea 211-A151-00 SCREW,MACHINE:M2.5X6MM L
1-6 1 ea 334-1377-50 MARKER, IDENT
1-7 1ea 075-1268-02 INSTRUCTION MANUAL,
WCA2UP-03 & RSA3UP-03

Kit Description
2
WCA2UP-03 & RSA3UP-03 Instructions
1
2
3
45
6
7
X8 X16
X4
X4
Figure 1: Kit parts

WCA2UP-03 & RSA3UP-03 Instructions
3
Installation Instructions
These instructions are for personnel who are familiar with servicing the product.
If you need further details for disassembling or reassembling the product, refer to
the WCA230A and WCA280A Service Manual (Tektronix part number
071-1257-00) or the RSA3303A and RSA3308A Service Manual (Tektronix part
number 071-1412-XX).
CAUTION. To prevent static discharge damage, service the product only in a
static-free environment. Observe standard handling precautions for static-sensi-
tive devices while installing this kit. Always wear a grounded wrist strap,
grounded foot strap, and static resistant apparel while installing this kit.
These installation instructions consist of four main processes:
HReplacing the A10 A/D board
HInstalling the I and Q input connectors
HEnabling the IQ input function
HCalibrating the analyzer

Installation Instructions
4
WCA2UP-03 & RSA3UP-03 Instructions
Replacing the A10 A/D Board
Perform the following procedure to replace the A10 A/D board.
You will need a Phillips #2 screwdriver.
1. Disconnect all external cables and the power cord from the analyzer.
2. Remove the one screw securing the rear foot over the cabinet to the rear
panel at each corner.
3. Remove the center two screws securing the cabinet to the rear panel.
4. Slide the cabinet backward. As you remove the cabinet, take care not to bind
or snag it on the analyzer’s internal cabling.
Figure 2: Cabinet removal
Removing the Cabinet

Installation Instructions
WCA2UP-03 & RSA3UP-03 Instructions
5
You will need a Phillips #2 screwdriver.
1. Locate the A10 A/D board in Figure 3 (top view of the card cage).
GPIB
Rear
TRIG
IN
TRIG
OUT
Q--
IN
Q+
IN
I--
IN
I+
IN
REF
IN
REF
OUT
A70
DC power
A40
Memory
A30
Trigger
A20
DDC
A10
A/D
RF5
RF4
RF2
RF3
A62
Front
connection FDD
CPU
HDD
Fan
To fan
W75 W41 W40
W47 W46
W31 W30
W25 To remove the A10 board,
unplug the SMB cables from the
connectors indicated by ovals
(Refer to step 3 on page 6).
Front
WCA280A or RSA3308A only
Figure 3: Top view of the card cage
Removing Old A10 Board

Installation Instructions
6
WCA2UP-03 & RSA3UP-03 Instructions
2. Remove the board support bracket: See Figure 4 below.
Remove the two screws securing the board support bracket to the rear
support bracket and the RF5 module. Lift the board support bracket away.
A10 A/D board
Board support bracket
Rear support bracket
Figure 4: Removing the A10 A/D board
3. Disconnect cables to access the A10 A/D board: See Figure 3 on page 5.
a. Unplug the SMB cables W40 (RF OUT) and W41 (RF IN) from the
RF5 module.
b. Unplug the SMB cables W30 and W31.

Installation Instructions
WCA2UP-03 & RSA3UP-03 Instructions
7
4. Remove the A10 A/D board: See Figure 4 on page 6.
a. Remove the two screws securing the front shield bracket to the main
chassis.
b. Remove the two screws securing the back shield bracket to the main
chassis.
c. Lift up the A10 board with the shield brackets from the main frame.
5. Remove the shield brackets: (See Figure 5 below.)
a. Remove the 8 screws securing the front shield bracket to the A10 board
to detach the bracket.
b. Remove the 9 screws securing the back shield bracket to the A10 board
to detach the bracket.
Back shield bracket
Old A10 A/D board
Front shield bracket
Figure 5: Detaching the shield brackets

Installation Instructions
8
WCA2UP-03 & RSA3UP-03 Instructions
You will need a Phillips #2 screwdriver.
1. Attach the shield brackets: See Figure 6 below.
a. Secure the back shield bracket to the new A10 board with 13 screws
(Tektronix part number 211-0871-00; 9 were removed and 4 were
included in this kit).
b. Secure the front shield bracket to the A10 board with 12 screws
(Tektronix part number 211-0871-00; 8 were removed and 4 were
included in this kit).
New A10 A/D board
Figure 6: Attaching the shield brackets
2. Reverse step 4 on page 7 to install the new A10 board with the shield
brackets to its slot.
3. Reverse step 3 on page 6 to reconnect the cables.
Installing New A10 Board