Keysight N5224A, N5225A, N5224AU- 601, N5225AU- 601, N5225-60112 Installation Manual
Keysight Add 4-Port Capability
Upgrade Kit
For Version 6, Single-Source
Synthesizers
To Upgrade PNA N5224A or N5225A Option 201 to
Option 401
Upgrade Kit Order Numbers: N5224AU- 601 and
N5225AU- 601
Keysight Kit Number: N5225-60112
Installation Note
Notices
© Keysight Technologies, Inc.
2009-2020
No part of this manual may be
reproduced in any form or by any
means (including electronic storage
and retrieval or translation into a
foreign language) without prior
agreement and written consent from
Keysight Technologies, Inc. as
governed by United States and
international copyright laws.
Trademark Acknowledgments
Manual Part Number
N5225-90121
Edition
October 2020
Printed in USA/Malaysia
Published by:
Keysight Technologies
1400 Fountaingrove Parkway
Santa Rosa, CA 95403
Warranty
THE MATERIAL CONTAINED IN THIS
DOCUMENT IS PROVIDED “AS IS,”
AND IS SUBJECT TO BEING
CHANGED, WITHOUT NOTICE, IN
FUTURE EDITIONS. FURTHER, TO
THE MAXIMUM EXTENT PERMITTED
BY APPLICABLE LAW, KEYSIGHT
DISCLAIMS ALL WARRANTIES,
EITHER EXPRESS OR IMPLIED WITH
REGARD TO THIS MANUAL AND
ANY INFORMATION CONTAINED
HEREIN, INCLUDING BUT NOT
LIMITED TO THE IMPLIED
WARRANTIES OF
MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE.
KEYSIGHT SHALL NOT BE LIABLE
FOR ERRORS OR FOR INCIDENTAL
OR CONSEQUENTIAL DAMAGES IN
CONNECTION WITH THE
FURNISHING, USE, OR
PERFORMANCE OF THIS
DOCUMENT OR ANY INFORMATION
CONTAINED HEREIN. SHOULD
KEYSIGHT AND THE USER HAVE A
SEPARATE WRITTEN AGREEMENT
WITH WARRANTY TERMS
COVERING THE MATERIAL IN THIS
DOCUMENT THAT CONFLICT WITH
THESE TERMS, THE WARRANTY
TERMS IN THE SEPARATE
AGREEMENT WILL CONTROL.
Technology Licenses
The hardware and/or software
described in this document are
furnished under a license and may be
used or copied only in accordance
with the terms of such license.
U.S. Government Rights
The Software is “commercial
computer software,” as defined
by Federal Acquisition Regulation
(“FAR”) 2.101. Pursuant to FAR
12.212 and 27.405-3 and
Department of Defense FAR
Supplement (“DFARS”) 227.7202,
the U.S. government acquires
commercial computer software
under the same terms by which
the software is customarily
provided to the public.
Accordingly, Keysight provides
the Software to U.S. government
customers under its standard
commercial license, which is
embodied in its End User License
Agreement (EULA), a copy of
which can be found at
http://www.keysight.com/find/sweula
The license set forth in the EULA
represents the exclusive authority
by which the U.S. government
may use, modify, distribute, or
disclose the Software. The EULA
and the license set forth therein,
does not require or permit,
among other things, that
Keysight: (1) Furnish technical
information related to
commercial computer software
or commercial computer
software documentation that is
not customarily provided to the
public; or (2) Relinquish to, or
otherwise provide, the
government rights in excess of
these rights customarily provided
to the public to use, modify,
reproduce, release, perform,
display, or disclose commercial
computer software or
commercial computer software
documentation. No additional
government requirements
beyond those set forth in the
EULA shall apply, except to the
extent that those terms, rights, or
licenses are explicitly required
from all providers of commercial
computer software pursuant to
the FAR and the DFARS and are
set forth specifically in writing
elsewhere in the EULA. Keysight
shall be under no obligation to
update, revise or otherwise
modify the Software. With
respect to any technical data as
defined by FAR 2.101, pursuant
to FAR 12.211 and 27.404.2 and
DFARS 227.7102, the U.S.
government acquires no greater
than Limited Rights as defined in
FAR 27.401 or DFAR 227.7103-5
(c), as applicable in any technical
data.
Safety Notices
A CAUTION notice denotes a hazard. It
calls attention to an operating
procedure, practice, or the like that,
if not correctly performed or adhered
to, could result in damage to the
product or loss of important data. Do
not proceed beyond a CAUTION
notice until the indicated conditions
are fully understood and met.
A WARNING notice denotes a hazard.
It calls attention to an operating
procedure, practice, or the like that,
if not correctly performed or adhered
to, could result in personal injury or
death. Do not proceed beyond a
WARNING notice until the indicated
conditions are fully understood and
met.
Keysight Add 4-Port Capability Upgrade Kit
Upgrade Kit Order Number: N5225-60112
Installation Note
Description of the Upgrade
This upgrade converts your N5224A or N5225A Option 201 2-port analyzer to
a N5224A or N5225A Option 401
4-port analyzer by adding:
— an additional source
— an additional source synthesizer
— two additional doublers
—an additional mixer brick
— two additional receiver
—couplers
— two additional test port couplers
—a splitter
— a modified front panel
— new cables
Refer to “Overview of the Installation Procedure” on page 12.
This repair must be done at a service center or a self-maintainer service
center! Refer to “Getting Assistance from Keysight” on page 4.
3
-
Description of the Upgrade
Getting Assistance from Keysight
Getting Assistance from Keysight
Installing this upgrade kit requires special skills and experience. If you think
you may not be qualified to do the work, or need advice, contact Keysight.
Contacting Keysight
Assistance with test and measurements needs and information on finding a
local Keysight office are available on the Web at:
http://www.keysight.com/find/assist
If you do not have access to the Internet, please contact your Keysight field
engineer.
In any correspondence or telephone conversation, refer to the Keysight
product by its model number and full serial number. With this information,
the Keysight representative can determine whether your product is still
within its warranty period.
If You Have Problems With the Upgrade Kit Contents
Keysight stands behind the quality of the upgrade kit contents. If you have
problems with any item in the kit, refer to www.keysight.com and the Contact
Keysight () link.
4 Installation Note N5225-90121
Description of the Upgrade
Getting Prepared
Getting Prepared
The PNA contains extremely sensitive components that can be ruined if
mishandled. Follow instructions carefully when making cable connections,
especially wire harness connections.
The person performing the work accepts responsibility for the full cost of
the repair or replacement of damaged components.
To successfully install this upgrade kit, you will need the following:
—A license key - refer to “License Key Redemption” below.
— A PDF copy or a paper copy of the PNA Service Guide - refer to
— An ESD-safe work area - refer to “Protecting Your Workspace from
— Correct tools - refer to “Tools Required for the Installation” on page 8.
— Enough time - refer to “About Installing the Upgrade” on page 8.
“Downloading the Online PNA Service Guide” below.
Electrostatic Discharge” below.
— Test equipment for the post-upgrade adjustments and full instrument
calibration. To view the equipment list, click the Chapter 3 bookmark “Tests
and Adjustments” in the PDF Service Guide
License Key Redemption
The enclosed Option Entitlement Certificate is a receipt, verifying that you
have purchased a licensed option for the PNA of your choice. You must
now use a Keysight Web page to request a license key for the instrument
that will receive the option.
To enable the option product, you must request a license key from:
http://www.keysight.com/find/softwarelicense. To complete the request, you
will need to gather the following information:
— From the certificate
— Order number
— Certificate number
— From your instrument
— Model number
1
.
— Serial number
—Host ID
1. See “Downloading the Online PNA Service Guide” on page 7.
Installation Note N5225-90121 5
-
Description of the Upgrade
Getting Prepared
The instrument information is available on the network analyzer – on the
analyzer’s Help menu, click About Network Analyzer.
If you provide an email address, Keysight will promptly email your license key.
Otherwise, you will your receive your license key via postal mail.
Verify the License Contents
Refer to the license message you received from Keysight:
If the model number, serial number, or option number do not match those on
the license message you received from Keysight, you will not be able to install
the license key file. If this is the case you received from Keysight, you will not
be able to install the license key file. If this is the case, contact Keysight for
assistance. Refer to “Getting Assistance from Keysight” on page 4.
Verify the Model/Version of HMA26.5 Installed
This upgrade kit contains components for use with PNA models using the
legacy HMA26.5 part number 5086-7765. If your PNA has the newer HMA26.5
part number N5240-60101 installed you may discard these parts:
— A26 splitter 5067-4086
— W52 N5245-20013
— W53 N5245-20023
— W54 N5245-20022
(If you have the legacy 5086-7765 HMA26.5, please discard the N5245-20195
semi-rigid cables. Refer to Figure 1 on page 7.)
The new N5240-60101 HMA26.5 has the splitter integrated into the assembly.
Refer to Figure 1 on page 7.
6 Installation Note N5225-90121
Description of the Upgrade
Getting Prepared
Figure 1 Comparison of Legacy HMA26.5 (5087-7765) and New HMA26.5
(N5240-60101)
Downloading the Online PNA Service Guide
To view the online Service Guide for your PNA model number, use the following
steps:
1. Go to www.keysight.com.
2. In the Search box, enter the model number of the analyzer (Ex: N5242A)
and click Search.
3. Click Technical Support > Manuals.
4. Click Service Manual.
5. Click the service guide title to download the PDF file.
6. When the PDF of the Service Guide is displayed, scroll through the
Contents section bookmarks to locate the information needed.
Protecting Your Workspace from Electrostatic Discharge
For information, click on the Chapter 1 bookmark, “Electrostatic Discharge
1
Protection” in the PDF Service Guide
.
1. See “Downloading the Online PNA Service Guide” on page 7.
Installation Note N5225-90121 7
-
Description of the Upgrade
Getting Prepared
ESD Equipment Required for the Installation
Description Keysight Part Number
ESD grounding wrist strap 9300-1367
5-ft grounding cord for wrist strap 9300-0980
2 x 4 ft conductive table mat and 15-ft grounding wire 9300-0797
ESD heel strap (for use with conductive floors) 9300-1308
Tools Required for the Installation
Description Qty Part Number
T-6 TORX driver - set to 4 in-lbs (0.45 N.m) 1 N/A
T-10 TORX driver - set to 9 in-lbs (1.02 N.m) 1 N/A
T-20 TORX driver - set to 21 in-lbs (2.38 N.m) 1 N/A
5/16-in (8 mm) nutsetter or open end torque wrench - set to
10 in-lbs (1.13 N.m)
3/16-in (5 mm) nutsetter or open end torque wrench - set to 6
in-lbs (0.68 N.m)
5/8-in (16 mm) nutsetter or open end torque wrench - set to
21 in-lbs (2.38 N.m)
9 mm nutsetter or open end torque wrench - set to 21 in-lbs
(2.38 N.m)
1-in (25.4 mm) torque wrench - set to 72 in-lbs (8.15 N.m) 1 N/A
1N/A
1N/A
1N/A
1N/A
Use a 5/16-in torque wrench set to 10 in-lbs on all cable connections
except the front and rear panel bulkhead connectors. On these, use a 9
mm nutsetter or open end torque wrench set to 21 in-lb.
About Installing the Upgrade
Products affected N5224A and N5225A Option 201
Installation to be performed by Keysight service center or personnel qualified by Keysight
Estimated installation time 5 hours
Estimated adjustment time 0.5 hours
Estimated full instrument calibration time 4.5 hours
8 Installation Note N5225-90121
Description of the Upgrade
Items Included in the Upgrade Kit
Items Included in the Upgrade Kit
Check the contents of your kit against the following list. If any part is missing or
damaged, contact Keysight Technologies. Refer to “Getting Assistance from
Keysight” on page 4.
Table 1 Contents of Upgrade Kit N5225-60112
Ref
Desig.
- Installation note (this document) 1 N5225-90121
A10 26.5 GHz source (2) board 1 5087-7342
A12 40 GHz doubler assembly port 3
A13 40 GHz doubler assembly port 4
A17 13.5 GHz (source 2) synthesizer board 1
A26a
A28 Mixer brick (2) 1 5087-7417
A30 Test port 3 receiver coupler
A31 Test port 4 receiver coupler
A34 Test port 3 coupler 2 5087-7793
A35 Test port 4 coupler
Splitter 1 5067-4086
- Front frame, 4-port 1 N5247-20141
- Machine screw, M3.0 x 6, flat head (to attach front frame to coupler plate) 3 0515-1946
Description Qty Part Number
2 5087-7349
N5240-60074
Was N5242-60150
2 5087-7760
- Machine screw, M2.0 x 6, flat head (8 to attach two receiver couplers to brackets) 10 0515-1602
Machine screw, M2.5 x 20, pan head (4 to attach A34 and A35 receiver coupler
assemblies to test set deck)
Machine screw, M4.0 x 10, pan head (2 each to attach the following boards to the
-
analyzer chassis: A17 13.5 GHz synthesizer board, A10 26.5 GHz source board, A12
40 GHz doubler assembly port 3, and A13 40 GHz doubler assembly port 4.)
- Machine screw, M3.0 x 12, pan head (1 to attach cable bracket to test set deck. 2 0515-0664
Machine screw, M3.0 x 8, pan head (3 to attach shield to A28 mixer brick; 8 to attach
two src attn and two rcvr attn to brackets)
- Machine screw, M2.5 x 16, pan head (2 to attach splitter to mixer brick) 3 0515-2007
- Machine screw, M3.0 x 25, pan head (3 to attach A28 mixer brick to block) 4 0515-0667
- Machine screw, M3.0 x 20, flat head (2 to attach bracket to A10 26.5 GHz source) 3 0515-2078
- Machine screw, M3.0 x 18, pan head (1 to attach bracket to A10 26.5 GHz source) 2 0515-0666
Installation Note N5225-90121 9
5 0515-0374
10 0515-0380
13 0515-0372
-
Description of the Upgrade
Items Included in the Upgrade Kit
Table 1 Contents of Upgrade Kit N5225-60112
Ref
Desig.
Description Qty Part Number
- Front panel overlay (label), 4-port 1 N5227-80005
- Keypad overlay (label) 1 N5242-80005
- Power button overlay (label) 1 N5242-80007
- Nameplate, N5224A 1 N5224-80001
- Nameplate, N5225A 1 N5225-80001
- Test set front plate, 4-port 1 N5224-00005
- Gap pad (between mixer brick A28 and shield) 4 N5245-20125
- Gap pad (between each test coupler and the test set front plate) 4 E4403-20033
- Shield, mixer brick 1 N5245-00023
- 50 ohm load, attached to A13 40 GHz doubler 1 1250-4261
- Vibration mount (between couplers 1 & 3, and 2 & 4) 2 0460-2725
- Mounting nuts (for port 3 & 4 test port couplers) 2 5022-1087
- Cable guard, center jumper cables 1 N5242-00030
- Cable clamp, to secure W33 (N5245-20108); to secure W40 (N5245-20042); to
12 1400-1334
secure W25 (N5245-20016); to secure W21 (N5245-20110).
- Cable tie wrap, to secure W44 (N5245-20020); to secure W21 (N5245-20008). 6 1400-0249
- 2.4 mm dust cap for A28 mixer brick 1 N5247-20138
- Bracket for receiver coupler 2 N5245-00017
- Bracket for cables 1 N5245-00022
- Bracket for A10 26.5 GHz source (2) board 1 N5247-20136
W2
RF cable, A10 source (2) P1 to A17 13.5 GHz source (2) synthesizer J1207
(4-port)
1 N5245-20100
W7 RF cable, A10 source (2) P5 to A12 port 3 doubler 1 N5245-20034
W8 RF cable, A10 source (2) P3 to A13 port 4 doubler 1 N5245-20035
W9 RF cable, A10 source (2) P4 to A12 port 3 doubler 1 N5245-20032
W10 RF cable, A12 port 3 doubler to A13 port 4 doubler 1 N5245-20033
W13 RF cable, A12 port 3 doubler to W14 1 N5245-20036
W14 RF cable, A30 port 3 receiver coupler to W13 1 N5245-20043
W15 RF cable, A13 port 4 doubler to W16 1 N5245-20036
W16 RF cable, A31 port 4 receiver coupler to W15 1 N5245-20044
10 Installation Note N5225-90121
Description of the Upgrade
Items Included in the Upgrade Kit
Table 1 Contents of Upgrade Kit N5225-60112
Ref
Desig.
Description Qty Part Number
W20 RF cable, Front panel port 1 CPLR THRU to A33 port 1 coupler 1 N5245-20099
W21 RF cable, A29 port 1 receiver coupler to A37 reference mixer switch 1 N5245-20110
W22 RF cable, A33 port 1 coupler to front-panel Port 1 CPLR ARM 1 N5245-20014
W23 RF cable, A30 port 3 rcvr coupler to front-panel Port 3 SOURCE OUT 1 N5245-20051
W24 RF cable, Front panel port 3 CPLR THRU to A34 port 3 coupler 1 N5245-20098
W25 RF cable, A30 port 3 receiver coupler to front-panel REF 3 SOURCE 1 N5245-20016
W26 RF cable, A34 port 3 coupler to front-panel Port 3 CPLR ARM 1 N5245-20015
W27 RF cable, A31 port 4 rcvr coupler to front-panel Port 4 SOURCE OUT 1 N5245-20052
W28 RF cable, Front panel port 4 CPLR THRU to A35 port 4 coupler 1 N5245-20096
W29 RF cable, A31 port 4 receiver coupler to front-panel REF 4 SOURCE OUT 1 N5245-20017
W30 RF cable, A35 port 4 coupler to front-panel Port 4 CPLR ARM 1 N5245-20018
W32 RF cable, Front panel port 2 CPLR THRU to A36 port 2 coupler 1 N5245-20097
W33 RF cable, A32 port 2 receiver coupler to front-panel REF 2 SOURCE OUT 1 N5245-20108
W34 RF cable, A36 port 2 coupler to front-panel Port 2 CPLR ARM 1 N5245-20019
W36 RF cable, Front panel jumper 6 N5245-20155
W38 RF cable, Port 3 RCVR C IN to A28 mixer brick (C) 1 N5245-20037
W39 RF cable, Port 4 RCVR D IN to A28 mixer brick (D) 1 N5245-20038
W44 RF cable, REF 3 RCVR R3 IN to A28 mixer brick (R3) 1 N5245-20020
W45 RF cable, REF 4 RCVR R4 IN to A28 mixer brick (R4) 1 N5245-20191
a
W52
W53
W54
RF cable, A25 HMA26.5 to A26 splitter 1 N5245-20013
a
RF cable, A26 splitter to A27 mixer brick 1 N5245-20023
a
RF cable, A26 splitter to A28 mixer brick 1 N5245-20022
W62 RF cable, A27 mixer brick (R1) to A24 IF multiplexer (P411) 1 N5242-60021
W63 RF cable, A27 mixer brick (R2) to A24 IF multiplexer (P412) 1 N5242-60022
W65 RF cable, A28 mixer brick (D) to A24 IF multiplexer (P801) 1 N5242-60024
W66 RF cable, A28 mixer brick (R4) to A24 IF multiplexer (P414) 1 N5242-60019
W67 RF cable, A28 mixer brick (R3) to A24 IF multiplexer (P413) 1 N5242-60020
W68 RF cable, A28 mixer brick (C) to A24 IF multiplexer (P601) 1 N5242-60023
W70 RF cable, A24 IF multiplexer board P203 to A16 SPAM board J2 1 N5242-60013
Installation Note N5225-90121 11
-
Description of the Upgrade
Installation Procedure for the Upgrade
Table 1 Contents of Upgrade Kit N5225-60112
Ref
Desig.
W72 RF cable, A24 IF multiplexer board P603 to A16 SPAM board J5 1 N5242-60015
W77
W203
RF cable, A14 frequency reference board J7 to A17 13.5 GHz (source 2) synthesizer
board J5 (Located on bottom of board.)
b
RF cable, A25 HMA26.5 (top) to A28 mixer brick (top)
- Ribbon cable, A23 test set motherboard J552 to A28 mixer brick (2) J52 1 N5247-60015
a. The A26 splitter (5067-4086) and N5245-20013, N5245-20022, N5245-20023, N545-20101, and N5245-20150
cables are only used with a legacy HMA26.5 p/n: 5087-7765. If you are unclear which HMA26.5 assembly your
PNA has installed, refer to Chapter 7 Repairs and
refer to your option-model in Chapter 6 "2-Port Configurations, Serial Number Prefix <6021" and "4-Port Configuration, Serial Number Prefix <6021".
b. The N5245-20195 cable is used only with instruments that have a newer HMA26.5 installed. If your PNA has a legacy
5087-7765 HMA26.5 assembly installed, then this cable can be discarded. If you are unclear which HMA26.5 assembly your
PNA has installed, refer to Figure 1 on page 7.
Description Qty Part Number
1 N5242-60030
1 N5245-20195
Figure 1 on page 7 and for details on A26 splitter and cabling,
Extra quantities of items such as protective plastic caps, screws, cable ties,
and cable clamps may be included in this upgrade kit. It is normal for some
of these items to remain unused after the upgrade is completed.
Installation Procedure for the Upgrade
The network analyzer must be in proper working condition prior to installing
this option. Any necessary repairs must be made before proceeding with this
installation.
This installation requires the removal of the analyzer’s protective
outer covers. The analyzer must be powered down and
disconnected from the mains supply before performing this
procedure.
Overview of the Installation Procedure
“Step 1. Obtain a Keyword and Verify the Information.”
“Step 2. Remove the Outer Cover.”
“Step 3. Remove the Inner Cover.”
“Step 4. Remove the Front Panel Assembly.”
“Step 5. Remove the A23 Test Set Motherboard.”
“Step 6. Remove Some Bottom-Side (Test Set) Cables.”
12 Installation Note N5225-90121
Description of the Upgrade
Installation Procedure for the Upgrade
“Step 7. Remove the A27 Mixer Brick Assembly.”
“Step 8. Assemble the A28 Mixer Brick Assembly.”
“Step 9. Install the A27/A28 Mixer Brick Assemblies.”
“Step 10.Assemble the A34 and A35 Receiver Coupler Assemblies.”
“Step 11. Install the A34 and A35 Receiver Coupler Assemblies.”
“Step 12. Assemble the A33 - A36 Test Port Coupler Assemblies.”
“Step 13. Install the LED Boards and Test Port Coupler Assemblies to the
4-Port Test Set Front Plate.”
“Step 14. Install the 4-Port Coupler Plate Assembly to the Deck.”
“Step 15. Assemble and Install the A12 and A13 40 GHz Doubler Assemblies.”
“Step 16. Install Bracket to A10 Source Assembly.”
“Step 17. Assemble the A10 26.5 GHz Source 2 Assembly.”
“Step 18. Install the A10 26.5 GHz Source 2 Assembly and Cables.”
“Step 19. Install the A17 13.5 GHz (Source 2) Synthesizer Board and Cables.”
“Step 20. Install the Cable Bracket Mount.”
“Step 21. Install the Test Set Cables.”
“Step 22. Secure the Front Panel Bulkhead Connectors.”
“Step 23. Reinstall the A23 Test Set Motherboard.”
“Step 24. Install Cable on the A23 Test Set Motherboard.”
“Step 25. Replace the Front Frame in the Front Panel Assembly.”
“Step 26. Reinstall Front Panel Assembly.”
“Step 27. Install the Overlays and Nameplate.”
“Step 28. Install the Front Panel Jumper Cables.”
“Step 29. Position the Cables and Wires to Prevent Pinching.”
“Step 30. Reinstall the Inner Cover.”
“Step 31. Reinstall the Outer Cover.”
“Step 33. Enable Options P04 and 401.”
“Step 34. Perform Post-Upgrade Adjustments and Calibration.”
“Step 35. Prepare the PNA for the User.”
Installation Note N5225-90121 13
-
Description of the Upgrade
Installation Procedure for the Upgrade
Step 1. Obtain a Keyword and Verify the Information
Follow the instructions on the Option Entitlement Certificate supplied to obtain
a license key for installation of this upgrade. Refer to “License Key
Redemption” on page 5.
Verify that the model number, serial number, and option number information
on the license key match those of the instrument on which this upgrade will be
installed.
If the model number, serial number, or option number do not match those on
your license key, you will not be able to install the option. If this is the case,
contact Keysight for assistance before beginning the installation of this
upgrade. Refer to “Contacting Keysight” on page 4.
Once the license key has been received and the information verified, you can
proceed with the installation at step 2.
Step 2. Remove the Outer Cover
For instructions, click the Chapter 7 bookmark “Removing the Covers” in the
1
PDF Service Guide
.
Step 3. Remove the Inner Cover
For instructions, click the Chapter 7 bookmark “Removing the Covers” in the
1
PDF Service Guide
.
Step 4. Remove the Front Panel Assembly
For instructions, click the Chapter 7 bookmark “Removing and Replacing the
1
Front Panel Assembly” in the PDF Service Guide
.
Step 5. Remove the A23 Test Set Motherboard
For instructions, click the Chapter 7 bookmark “Removing and Replacing the
1
A23 test set motherboard” in the PDF Service Guide
.
Step 6. Remove Some Bottom-Side (Test Set) Cables
Be careful not to damage the center pins of the semirigid cables. Some
flexing of the cables may be necessary but do not over-bend them.
When removing a cable, also remove the plastic cable clamp, if present. It
is normal for some of the cable clamp’s adhesive to remain.
1. Place the analyzer bottom-side up on a flat surface.
1. See “Downloading the Online PNA Service Guide” on page 7.
14 Installation Note N5225-90121
Loading...