Keysight N5221BU-677 Installation and operation manual

Installation Note
Keysight - Add 4-Port Capability
Upgrade Kit for
Version 7 Synthesizers
(For Models With Direct Digital Synthesis (Only))
To Upgrade PNA N5221B and N5222B Option 417
Upgrade Kit Order Number: N5221BU- 677 and N5222BU- 677
Keysight Kit Number: N5222-60129

Notices
©Keysight Technologies, Inc.
2013-2020
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
N5222-90129
Edition
Edition 1, December 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
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BY APPLICABLE LAW, KEYSIGHT
DISCLAIMS ALL WARRANTIES,
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REGARD TO THIS MANUAL AND
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HEREIN, INCLUDING BUT NOT
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FOR ERRORS OR FOR INCIDENTAL
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THESE TERMS, THE WARRANTY
TERMS IN THE SEPARATE
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described in this document are
furnished under a license and may be
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The Software is “commercial
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Supplement (“DFARS”) 227.7202,
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shall be under no obligation to
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(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.

3
Keysight Add 4-Port Capability Upgrade Kit
Upgrade Kit Number: N5222-60129
Installation Note
Description of the Upgrade
This upgrade converts your N5221B or N5222B Option 217 2-port analyzer to
a N5221B or N5222B Option 417 4-port analyzer by adding:
— a x4 direct digital synthesizer (DDS) assembly
— an additional source
—anadditionalmixerbrick
— two additional receiver couplers
— two additional test port couplers
— two additional source attenuators
— two additional receiver attenuators
—asplitter
— a modified front panel
—anadditionalcableguard
— new cables
Refer to “Overview of the Installation Procedure” on page 15.
This repair must be done at a service center or a self-maintainer service
center! Refer to “Getting Assistance from Keysight” on page 4.
This upgrade kit is for upgrading 2-port Option 217 models with (x2) direct
digital synthesis (DDS) to a 4-port Option 417 with DDS only.

4 Installation Note N5222-90129
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.
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.
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.f

Installation Note N5222-90129 5
Getting Prepared
Getting Prepared
To successfully install this upgrade kit, you will need the following:
—Alicensekey-referto“License Key Redemption” below.
— A PDF copy or a paper copy of the PNA Service Guide - refer to
“Downloading the Online PNA Service Guide” below.
— An ESD-safe work area - refer to “Protecting Your Workspace from
Electrostatic Discharge” below.
— Correct tools - refer to “Tools Required for the Installation” on page 9.
— Enough time - refer to “About Installing the Upgrade” on page 10.
— 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 Guide1.
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.
IMPORTANT!
—This document contains references to legacy and to a new A25
HMA26.5 Multiplier/Amplifier assembly. Your model instrument may
have a legacy HMA26.5 or a new HMA26.5 assembly. Both types of
assemblies are compatible with this upgrade. This note is for your
reference, because some figures contain legacy assemblies that your
instrument may not have installed.
—If you want to verify your instrument’s A25 HMA26.5
Multiplier/Amplifier, refer to “Verify the Model/Version of HMA26.5
Installed” on page 7.
—See also, your instrument’s PDF Service Guide a.
a. See “Downloading the Online PNA Service Guide” on page 7.
1. See “Downloading the Online PNA Service Guide” on page 7.

6 Installation Note N5222-90129
Getting Prepared
-
License Key Redemption
To enable the option product(s), you must request license key(s) file from the
Keysight Software Manager:
http://www.keysight.com/find/softwaremanager:
To complete the request, you will need to gather the following information:
— From the certificate
— Order number
— Certificate number
— From your instrument
(Instrument information is available in the network analyzer - on the
toolbar, click Help, then click About Network Analyzer.)
— Model number
— Serial number
Using the information just gathered, you must request license key(s) from the
Keysight Software Manager:
http://www.keysight.com/find/softwaremanager.
You will need to provide an email address, to which Keysight will promptly
email your license key file. Refer to “License Key Redemption” on page 6.
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, contact Keysight for assistance. Refer to
“Getting Assistance from Keysight” on page 4.
Ensure that you are connected to an external server, before attempting to
download your email and license key file.
If you are unfamiliar with the licensing process, refer to the
http://literature.cdn.keysight.com/litweb/pdf/N5242-90024.pdf.
The enclosed Software 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 file for the
instrument that will receive the option.

Installation Note N5222-90129 7
Getting Prepared
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 5087-7765. If your PNA has the newer HMA26.5
part number N5240-60101 installed you may discard these parts:
— A22 splitter 5087-7139
— W42 N5222-20009
— W43 N5222-20007
— W44 N5222-20008
Figure 1
(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.
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.

8 Installation Note N5222-90129
Getting Prepared
-
6. When the PDF of the Service Guide is displayed, scroll through the
Contents section bookmarks to locate the information needed.

Installation Note N5222-90129 9
Getting Prepared
Protecting Your Workspace from Electrostatic Discharge
For information, click on the Chapter 1 bookmark, “Electrostatic Discharge
Protection” in the PDF Service Guide1.
ESD Equipment Required for the Installation
Tools Required for the Installation
1. See “Downloading the Online PNA Service Guide” on page 7.
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
Description Qty
T-6 TORX driver - set to 4 in-lbs (0.45 N.m) 1
T-10 TORX driver - set to 9 in-lbs (1.02 N.m) 1
T-20 TORX driver - set to 21 in-lbs (2.38 N.m) 1
5/16-in (8 mm) nutsetter or open end torque wrench- set to 8 in-lbs (0.9 N.m) 1
5/16-in (8 mm) nutsetter or open end torque wrench - set to 10 in-lbs (1.13 N.m) 1
5/16-in (8 mm) nutsetter or open end torque wrench - set to 21 in-lbs (2.38 N.m) 1
3/16-in (5 mm) nutsetter or open end torque wrench - set to 6 in-lbs (0.68 N.m) 1
5/8-in (16 mm) nutsetter or open end torque wrench - set to 21 in-lbs (2.38 N.m) 1
1-in (25.4 mm) torque wrench - set to 72 in-lbs (8.15 N.m) 1
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 5/16
inch nutsetter or open end torque wrench set to 21 in-lb.

10 Installation Note N5222-90129
Getting Prepared
-
About Installing the Upgrade
Products affected N5221B and N5222B Option 217 with x2 DDS installed
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

Installation Note N5222-90129 11
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 2 Contents of Upgrade Kit N5222-60129
Ref
Desig. Description Qty Part Number
-- Installation note (this document) 1 N5222-90129
-- Software Entitlement Certificate 1 5964-5145
-- China RoHS Addendum 1 9320-6722
A8 26.5 GHz source (2) board 1 5087-7342
A11 Direct digital synthesizer (DDS) assembly, (x4) – (Replaces A11 x2 DDS assembly.) 1 N5240-60102
A22aSplitter 15087-7139
A24 Mixer brick (2) 1 5087-7829
A26 Test port 3 receiver coupler 2 5087-7757
A27 Test port 4 receiver coupler
A30 Test port 3 coupler 2 5087-7813
A31 Test port 4 coupler
A35 Test port 3 source attenuator 2 33321-60077
A36 Test port 4 source attenuator
A43 Test port 3 receiver attenuator 2 33321-60078
A44 Test port 4 receiver attenuator
-- Dress panel, overlay – 4-Port 1 N5240-00009
-- Machine screw, M3 x 8, pan head ((x2) A24 mixer (2) brick assembly, (x8) A35/36
source attenuators, A42/A44 receiver attenuators) 10 0515-0372
-- Machine screw, M4.0 x 10, pan head (to attach the following boards to the analyzer
chassis: A11 direct digital synthesizer (DDS) board and A8 26.5 GHz source board.) 4 0515-0380
--
Machine screw, M3.0 x 6, pan head (to attach source and receiver attenuator
assemblies to test set deck) – (to attach (x4) A26/A27 receiver coupler assemblies to
test set deck, (x6) A35/36 source attenuators, A42/A44 receiver attenuators)
10 0515-0430
-- Machine screw, M3.0 x 20, pan head (to attach brackets to receiver couplers; to
attach A24 mixer brick to brick) 7 0515-1410
-- Machine screw, M3.0 x 6, flat head (to attach front frame to coupler plate) 2 0515-1946
-- Machine screw, M3 x 14, pan head (to attach splitter to mixer brick) 2 0515-2994

12 Installation Note N5222-90129
Items Included in the Upgrade Kit
-
-- Front panel overlay (label), 4-port, Option 417 1 N5222-80014
-- Test set front plate, 4-port 1 N5221-00007
-- Cable-tie self-locking wide nylon gray 5 1400-0249
-- Dust caps for test ports 4 1401-0214
-- Gap pad (between each test coupler and the test set front plate) 4 E4403-20033
-- Short, installed on A24 mixer brick 1 0960-0055
-- 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 N5242-00049
-- Cable clamp 5 1400-1334
-- Bracket for receiver coupler 2 N5242-00006
-- Bracket for attenuator assemblies 2 N5242-00007
-- Bulkhead connector for test set front plate (hardware supplied with connector) 12 1250-3805
W2 RF cable, A11 13.5 GHz (SRC 2) direct digital synthesizer (J6)-SRC 2 RF IN P1 –
(This cable replaces W2 N5222-20090)
1 N5240-20123
W5 RF cable, A8 source (2) board P5 to W6 on bottom of analyzer 1 N5222-20062
W6 RF cable, W5 to A26 port 3 receiver coupler 1 N5222-20041
W7 RF cable, A8 source (2) board P3 to W8 on bottom of analyzer 1 N5222-20063
W8 RF cable, W7 to A23 port 4 receiver coupler 1 N5222-20042
W12 RF cable, Port 1 CPLR THRU to A29 port 1 coupler 1 N5222-20045
W14 RF cable, A29 port 1 coupler to front-panel Port 1 CPLR ARM 1 N5222-20030
W16 RF cable, Port 3 CPLR THRU to A30 port 3 coupler 1 N5222-20049
W17 RF cable, A26 port 3 receiver coupler to front-panel REF 3 SOURCE OUT 1 N5222-20023
W18 RF cable, A30 port 3 coupler to front-panel Port 3 CPLR ARM 1 N5222-20015
W20 RF cable, Port 4 CPLR THRU to A31 port 4 coupler 1 N5222-20054
W21 RF cable, A23 port 4 receiver coupler to front-panel REF 4 SOURCE OUT 1 N5222-20025
W22 RF cable, A31 port 4 coupler to front-panel Port 4 CPLR ARM 1 N5222-20018
W24 RF cable, Port 2 CPLR THRU to A32 port 2 coupler 1 N5222-20053
W26 RF cable, A32 port 2 coupler to front-panel Port 2 CPLR ARM 1 N5222-20034
Table 2 Contents of Upgrade Kit N5222-60129
Ref
Desig. Description Qty Part Number

Installation Note N5222-90129 13
Items Included in the Upgrade Kit
W30 RF cable, Front panel jumper 6 N5222-20091
W42aRF cable, A21 HMA26.5 to A22 splitter 1N5222-20009
W43aRF cable, A22 splitter to A23 mixer brick 1N5222-20007
W44aRF cable, A22 splitter to A24 mixer brick 1N5222-20008
W48 RF cable, A33 reference mixer switch to A23 mixer brick (R1) 1 N5222-20101
W49 RF cable, REF 3 RCVR R3 IN to A24 mixer brick (R3) 1 N5222-20024
W50 RF cable, REF 4 RCVR R4 IN to A24 mixer brick (R4) 1 N5222-20027
W52 RF cable, A23 mixer brick (R1) to A20 IF multiplexer (P411) 1 N5242-60021
W53 RF cable, A23 mixer brick (R2) to A20 IF multiplexer (P412) 1 N5242-60022
W55 RF cable, A24 mixer brick (D) to A20 IF multiplexer (P801) 1 N5242-60024
W56 RF cable, A24 mixer brick (R4) to A20 IF multiplexer (P414) 1 N5242-60019
W57 RF cable, A24 mixer brick (R3) to A20 IF multiplexer (P413) 1 N5242-60020
W58 RF cable, A24 mixer brick (C) to A20 IF multiplexer (P601) 1 N5242-60023
W60 RF cable, A20 IF multiplexer board P203 to A12 SPAM board (J2) 1 N5242-60013
W62 RF cable, A20 IF multiplexer board P603 to A12 SPAM board (J5) 1 N5242-60015
W75 RF cable, A26 port 3 receiver coupler to A35 port 3 source attenuator 1 N5222-20002
W76 RF cable,
A35 port 3 source attenuator to front-panel Port 3 SOURCE OUT 1 N5222-20019
W79 RF cable, A27 port 4 receiver coupler to A36 port 4 source attenuator 1 N5222-20001
W80 RF cable,
A36 port 4 source attenuator to front-panel Port 4 SOURCE OUT 1 N5222-20020
W89 RF cable, Port 3 RCVR C IN to A43 port 3 receiver attenuator 1 N5222-20021
W90 RF cable, A43 port 3 receiver attenuator to A24 mixer brick (C) 1 N5222-20006
W91 RF cable, Port 4 RCVR D IN to A44 port 4 receiver attenuator 1 N5222-20022
W92 RF cable, A44 rt 4 receiver attenuator to A24 mixer brick (D) 1 N5222-20026
W202bRF cable, A24 mixer brick (top connector) to A21 HMA25.6 A24 mixer brick (top
connector)
1N5222-20126
-- Ribbon cable, A19 test set motherboard J213 to A24 mixer brick (2) 1 N5242-60006
-- Ribbon cable, A19 test set motherboard J206 to A43 port 3 receiver attenuator 1 8121-0982
-- Ribbon cable, A19 test set motherboard J207 to A44 port 4 receiver attenuator 1 8121-0982
Table 2 Contents of Upgrade Kit N5222-60129
Ref
Desig. Description Qty Part Number

14 Installation Note N5222-90129
Items Included in the Upgrade Kit
-
-- Ribbon cable, A19 test set motherboard J202 to A35 port 3 source attenuator 1 N5242-60008
-- Ribbon cable, A19 test set motherboard J203 to A36 port 4 source attenuator 1 N5242-60008
a. The A22 splitter (5087-7139) and N5222-20007, N5222-20008, and N5222-20009 cables are only used with a legacy
HMA26.5 p/n: 5087-7765. If your PNA has a new N5240-60101 assembly installed, then set aside these parts as spares for
use in other PNAs with the older HMA26.5 or discard. If you are unclear which HMA26.5 assembly your PNA has installed, refer
to Figure 1 on page 7.
b. The N5222-20126 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.
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.
Table 2 Contents of Upgrade Kit N5222-60129
Ref
Desig. Description Qty Part Number

Installation Note N5222-90129 15
Installation Procedure for the Upgrade
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.
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.”
“Step 7. Remove the A23 Mixer Brick Assembly.”
“Step 8. Assemble the A24 Mixer Brick and A22 Splitter Assemblies.”
“Step 9. Assemble the A26 and A27 Receiver Coupler Assemblies.”
“Step 10. Install the A23/A24 Mixer Brick Assembly.”
“Step 11. Install the A26 and A27 Receiver Coupler Assemblies.”
“Step 12. Assemble the A35 and A36 Source Attenuators and the A43 and
A44 Receiver Attenuators.”
“Step 13. Install the A35 and A36 Source Attenuators and the A43 and A44
Receiver Attenuators.”
“Step 14. Assemble the A29 - A32 Test Port Coupler Assemblies.”
“Step 15. Install the LED Boards, Bulkhead Connectors, and Test Port Coupler
Assemblies to the 4-Port Test Set Front Plate.”
“Step 16. Install the Bulkhead Connectors in the Test Set Front Plate.”
“Step 17. Install the 4-Port Coupler Plate Assembly to the Deck.”
“Step 18. Remove the Old A11 (x2) Direct Digital Synthesizer (DDS) Assembly
and Cables.”
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.
Some of the following figures provided in this procedure contain bias tees.
Bias tees are included in the Option 219/419 upgrade kits and can be
ignored for Options 217/417.

16 Installation Note N5222-90129
Installation Procedure for the Upgrade
-
“Step 19. Assemble the A8 26.5 GHz Source 2 Assembly.”
“Step 20. Install the A8 26.5 GHz Source 2 Assembly.”
“Step 21. Install the *NEW* A11 (x4) Direct Digital Synthesizer (DDS)
Assembly and Cables.”
“Step 22. Install the Test Set Cables.”
“Step 23. Reinstall the A19 Test Set Motherboard.”
“Step 24. Install Cables on the A19 Test Set Motherboard.”
“Step 25. Replace the Front Panel’s Lower Dress Panel.”
“Step 26. Reinstall Front Panel Assembly.”
“Step 27. Install the Overlay.”
“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 32. Remove Option 217 License.”
“Step 33. Enable Options 417.”
“Step 34. Perform Post-Upgrade Adjustments and Calibration.”
“Step 35. Prepare the PNA for the User.”
Step 1. Obtain a Keyword and Verify the Information
Follow the instructions on the Software Entitlement Certificate supplied to
obtain a license key file for installation of this upgrade. Refer to “License Key
Redemption” on page 6.
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 file has been received and the information verified, you
can proceed with the installation at step 2.
If the model number, serial number, or option number do not match those
on your license key file, 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.

Installation Note N5222-90129 17
Installation Procedure for the Upgrade
Step 2. Remove the Outer Cover
For instructions, click the Chapter 7 bookmark “Removing the Covers” in the
PDF Service Guide1.
Step 3. Remove the Inner Cover
7. For instructions, click the Chapter 7 bookmark “Removing the Covers” in
the PDF Service Guide1.
Step 4. Remove the Front Panel Assembly
8. For instructions, click the Chapter 7 bookmark “Removing and Replacing
the Front Panel Assembly” in the PDF Service Guide1.
Step 5. Remove the A23 Test Set Motherboard
9. For instructions, click the Chapter 7 bookmark “Removing and Replacing
the A23 test set motherboard” in the PDF Service Guide1.
Step 6. Remove Some Bottom-Side (Test Set) Cables
1. Place the analyzer bottom-side up on a flat surface.
2. Remove the following cables. To see an image showing the location of
these cables, click the Chapter 6 bookmark “Bottom RF Cables, Standard
2-Port Configuration, Option 217, S/N Prefix ≥6021” in the PDF Service
Guide1.
These cables may be discarded - they will not be reinstalled.
—W70 (N5222-20073) A21 HMA26.5 to A23 mixer brick
—W48 (N5222-20003) A33 reference mixer switch to A23 mixer brick (R1)
—W12 (N5222-20068) A29 port 1 coupler to front-panel Port 1 CPLR THRU
1. See “Downloading the Online PNA Service Guide” on page 7.
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.
Leave the gray flexible cables, the wire harnesses, and the ribbon cables
connected where possible. Any that are removed should be labeled for
reconnection later.
Remove and save the cable guards for the front panel jumpers.
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.

18 Installation Note N5222-90129
Installation Procedure for the Upgrade
-
—W14 (N5222-20070) A29 port 1 coupler to front-panel Port 1 CPLR ARM
—W24 (N5222-20069) A32 port 2 coupler to front-panel Port 2 CPLR THRU
—W26 (N5222-20071) A32 port 2 coupler to front-panel Port 2 CPLR ARM
—W64 (N5242-60025) A23 mixer brick (R1) to A20 IF multiplexer (P601)
—W65 (N5242-60026) A23 mixer brick (R2) to A20 IF multiplexer (P801)
—W149 (N5247-60023) A20 IF multiplexer board P603 to A12 SPAM board
J2 (2-port)
—W150 (N5247-60024) A20 IF multiplexer board P203 to A12 SPAM board
J5 (2-port)
These cables must be saved - they will be reinstalled.
— W4 (N5222-20040) W3 to A25 port 1 receiver coupler
— W10 (N5222-20043) W9 to A24 port 2 receiver coupler
— W88 (N5222-20004) A42 port 1 receiver attenuator to A23 mixer brick
(A)
— W13 (N5222-20005) A25 port 1 receiver coupler to A33 reference mixer
switch
— W35 (N5222-20033) A33 reference mixer switch to front-panel REF 1
SOURCE OUT
— W36 (N5222-20032) REF 1 RCVR R1 IN to A33 reference mixer switch
— W30 (N5222-20091) (qty = 6) Front panel jumper
Step 7. Remove the A23 Mixer Brick Assembly
Remove the A23 mixer brick assembly from the PNA. For instructions, click the
Chapter 7 bookmark, “Removing and Replacing the A23 and A24 Mixer Bricks”
in the PDF Service Guide1.
Remove and save the cable guards for the front panel jumpers.
1. See “Downloading the Online PNA Service Guide” on page 7.

Installation Note N5222-90129 19
Installation Procedure for the Upgrade
Step 8. Assemble the A24 Mixer Brick and A22 Splitter Assemblies
1. Follow the instruction shown in Figure 2 and Figure 3. New parts are listed
in Table 2 on page 11 of this document.
Figure 2 A24 Mixer Brick Assembly (0515-0372, 0515-1410, 5087-7829)
IMPORTANT! The A22 splitter (5087-7139) and N5222-20007,
N5222-20008, and N5222-20009 cables are only used with a legacy
HMA26.5 p/n: 5087-7765. If your PNA has a new N5240-60101 assembly
installed, then set aside these parts as spares for use in other PNAs with
the older HMA26.5 or discard. If you are unclear which HMA26.5 assembly
your PNA has installed, refer to Figure 1 on page 7.

20 Installation Note N5222-90129
Installation Procedure for the Upgrade
-
Figure 3 A24 Mixer Brick Assembly (cont.) – (0960-0055, 5087-71391, N5242-60019,
N5242-60020, N5242-60021, N5242-60022, N5242-60023, and
N5242-60024)
1. The A22 splitter (5087-7139) and N5222-20007, N5222-20008, and N5222-20009 cables are only used with
a legacy HMA26.5 p/n: 5087-7765. If your PNA has a new N5240-60101 assembly installed, then set aside
these parts as spares for use in other PNAs with the older HMA26.5 installed or discard. If you are unclear
which HMA26.5 assembly your PNA has installed, refer to Figure 1 on page 7.