Keysight Technologies N5244AU- 940 Installation and operation manual

Installation Note
Keysight Add 4-Port Capability
Upgrade Kit
To Upgrade PNA-X N5244A or N5245A
Option 200 to Option 400
For Analyzers with Serial Numbers Prefixed
MY/SG/US5150 and Below
Upgrade Kit Order Number: N5244AU- 940 and N5245AU- 940
Keysight Kit Number: N5245-60105

Notices
© Keysight Technologies, Inc.
2009-2016
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
N5245-90015
Edition
Edition 1, August 2016
Printed in USA/Malaysia
Published by:
Keysight Technologies
1400 Fountaingrove Parkway
Santa Rosa, CA 95403
Warranty
THE MATERIAL CONTAINED IN THIS
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AND IS SUBJECT TO BEING
CHANGED, WITHOUT NOTICE, IN
FUTURE EDITIONS. FURTHER, TO
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DISCLAIMS ALL WARRANTIES,
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REGARD TO THIS MANUAL AND
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FOR ERRORS OR FOR INCIDENTAL
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The Software is “commercial
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by Federal Acquisition Regulation
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12.212 and 27.405-3 and
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Supplement (“DFARS”) 227.7202,
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Accordingly, Keysight provides
the Software to U.S. government
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Agreement (EULA), a copy of
which can be found at
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by which the U.S. government
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extent that those terms, rights, or
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from all providers of commercial
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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.

3
Keysight Add 4-Port Capability Upgrade Kit
Upgrade Kit Order Numbers: N5244AU- 940 and N5245AU- 940
Installation Note
Description of the Upgrade
This upgrade converts your N5244A or N5245A Option 200 2-port analyzer to
a N5244A or N5245A Option 400 4-port analyzer by adding:
— an additional source
— an additional source synthesizer
—two additional doublers
— an additional mixer brick
— two additional reference couplers
— two additional test port couplers
—a splitter
— a modified front panel
—many new cables

4 Installation Note N5245-90015
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.
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, email Keysight Component Test Division
(CTD) Support at s[email protected], or telephone the CTD
Hotline at [phone] and leave a voice mail message. Please include
details of the problem.
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.

Installation Note N5245-90015 5
Getting Prepared
Getting Prepared
To successfully install this upgrade kit, you will need the following:
— 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 7.
— Enough time - refer to “About Installing the Upgrade” on page 7.
—Test equipment for the post-upgrade adjustments. To view the equipment
list, click the Chapter 3 bookmark "Tests and Adjustments" in the PDF
Service Guide1.
License Key Redemption
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
— Serial number
—Host ID
The instrument information is available on the network analyzer – on the
analyzer’s Help menu, click About Network Analyzer.
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.
1. See “Downloading the Online PNA Service Guide” on page 6.
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.

6 Installation Note N5245-90015
Getting Prepared
-
If you provide an email address, Keysight will promptly email your license key.
Otherwise, you will your receive your license key via postal mail.
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
Protection” in the PDF Service Guide1.
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

Installation Note N5245-90015 7
Getting Prepared
Tools Required for the Installation
About Installing the Upgrade
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)
1N/A
5/16-in (8 mm) nutsetter or open end torque wrench - set to
21 in-lbs (2.38 N.m)
1N/A
3/16-in (5 mm) nutsetter or open end torque wrench - set to 6
in-lbs (0.68 N.m)
1N/A
5/8-in (16 mm) nutsetter or open end torque wrench - set to
21 in-lbs (2.38 N.m)
1N/A
9 mm nutsetter or open end torque wrench - set to 21 in-lbs
(2.38 N.m)
1N/A
1-in (25.4 mm) torque wrench - set to 72 in-lbs (8.15 N.m) 1 N/A
1/4-in (6 mm) open end wrench 1 N/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. Torque these
connections to 21 in-lb.
Products affected N5244A and N5245A Option 200
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 N5245-90015
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 N5245-60105
Ref
Desig. Description Qty Part Number
- Installation note (this document) 1 N5245-90015
A10 26.5 GHz source (2) assembly 1 5087-7780
Was 5087-7327
A12 Doubler assembly, port 3 2 5087-7349
Was 5087-7318
A13 Doubler assembly, port 4
A17 13.5 GHz source 2 synthesizer boarda3 N5240-60076
Was N5242-60166
A28 Mixer brick (2) 1 5087-7323
A30 Test port 3 reference coupler 2 5087-7760
Was 5086-7658
A31 Test port 4 reference coupler
A34 Test port 3 coupler 2 5087-7793
Was 5087-7724
A35 Test port 4 coupler
A26 Splitter 1 5067-4086
Was 5086-7408
A69 3 dB pad, attached to R4 connector on A28 mixer brick 1 08490-60010
- Front frame, diecast, 4-port 1 N5247-20141
Was N5245-20128
-Machine screw, M3.0 x 6, flat head (to attach lower front dress panel to
the test set front plate) 4 0515-1227
-Machine screw, M2.0 x 6, flat head (to attach 2 reference couplers to
brackets) 8 0515-1602
-Machine screw, M3.0 x 25, pan head (to attach mixer brick A28 to
mounting block) 3 0515-0667
-
Machine screw, M4.0 x 10, pan head (2 to attach source 2 assy to
chassis; 2 to attach A12 doubler 3 to chassis; 2 to attach A13 doubler 4
to chassis)
6 0515-0380
-Machine screw, M3.0 x 8, pan head (3 to attach shield to mixer brick; 1
to attach cable bracket to deck) 4 0515-0372
- Machine screw, M2.5 x 16, pan head (to attach splitter to mixer brick) 2 0515-2007

Installation Note N5245-90015 9
Items Included in the Upgrade Kit
-Machine screw, M3.0 x 10, pan head (to attach 2 reference
coupler/bracket assemblies to deck) 4 0515-0374
- Front panel overlay (label), 4-port 1 N5242-80003
- Test set front plate, 4-port 1 N5224-00005
- Nameplate, N5244A 1 N5244-80001
- Nameplate, N5245A 1 N5245-80003
- Gap pad (between each coupler and test set front sub panel) 4 E4403-20033
- Gap pad (between mixer brick A28 and shield) 4 N5245-20125
- Power button overlay (label) 1 N5242-80007
- Keypad overlay (label) 1 N5242-80005
- Shield, mixer brick 1 N5245-00023
- 50 ohm load (attach to W58 (N5245-20095) 1 1810-0118
- 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
- Bracket for reference coupler 2 N5245-00017
- Bracket for cables 1 N5245-00022
- Cable clamp, to secure W35 (N5245-20108), W29 (N5245-20017), W21
(N5245-20110), and W25 (N5245-20016)
8 1400-1334
- Cable ties, to secure W38 (N5245-20037) and W44 (N5245-20020)
together
5 1400-0249
- Dust caps for test ports 4 1401-0214
W2 A10 (source 2) P1 to A17 13.5 GHz source (2) synthesizer J1207 1 N5245-20100
W7 A10 (source 2) P5 to A12 port 3 doubler 1 N5245-20034
W8 A10 (source 2) P3 to A13 port 4 doubler 1 N5245-20035
W9 A10 (source 2) P4 to A12 port 3 doubler 1 N5245-20032
W10 A12 port 3 doubler to A13 port 4 doubler 1 N5245-20033
W13 A12 port 3 doubler to W14 1 N5245-20036
W14 A30 port 3 reference coupler to W13 1 N5245-20043
W15 A13 port 4 doubler to W16 1 N5245-20036
Table 1 Contents of Upgrade Kit N5245-60105
Ref
Desig. Description Qty Part Number

10 Installation Note N5245-90015
Items Included in the Upgrade Kit
-
W16 A31 port 4 reference coupler to W15 1 N5245-20044
W20 A33 port 1 coupler to Port 1 CPLR THRU 1 N5245-20099
W21 A29 port 1 reference coupler to A37 reference mixer switch 1 N5245-20110
W22 A33 port 1 coupler to front-panel Port 1 CPLR ARM 1 N5245-20014
W23 A30 port 3 ref coupler to front-panel Port 3 SOURCE OUT 1 N5245-20051
W24 A34 port 3 coupler to front-panel Port 3 CPLR THRU 1 N5245-20098
W25 A30 port 3 ref coupler to front-panel REF 3 SOURCE OUT 1 N5245-20016
W26 A34 port 3 coupler to front-panel Port 3 CPLR ARM 1 N5245-20015
W27 A31 port 4 ref coupler to front-panel Port 4 SOURCE OUT 1 N5245-20052
W28 A35 port 4 coupler to front-panel Port 4 CPLR THRU 1 N5245-20096
W29 A31 port 4 ref coupler to front-panel REF 4 SOURCE OUT 1 N5245-20017
W30 A35 port 4 coupler to front-panel Port 4 CPLR ARM 1 N5245-20018
W32 A36 port 2 coupler to front-panel Port 2 CPLR THRU 1 N5245-20097
W34 A36 port 2 coupler to front-panel Port 2 CPLR ARM 1 N5245-20019
W35 A32 port 2 reference coupler to front-panel REF 2 SOURCE OUT 1 N5245-20108
W36 Front panel jumper 6 N5245-20155
Was N5245-20104
W38 Port 3 RCVR C IN to A28 mixer brick (C) 1 N5245-20037
W39 Port 4 RCVR D IN to A28 mixer brick (D) 1 N5245-20038
W44 REF 3 RCVR R3 IN to A28 mixer brick (R3) 1 N5245-20020
W45 REF 4 RCVR R4 IN to A69 3 dB pad on A28 mixer brick (R4) 1 N5245-20021
W52 A25 HMA26.5 to A26 splitter 1 N5245-20013
W53 A26 splitter to A27 mixer brick 1 N5245-20023
W54 A26 splitter to A28 mixer brick 1 N5245-20022
W58 A28 mixer brick to 50 ohm load (1810-0118) 1 N5245-20095
W62 A27 mixer brick (R1) to A24 IF multiplexer (P411) 1 N5242-60021
W63 A27 mixer brick (R2) to A24 IF multiplexer (P412) 1 N5242-60022
W65 A28 mixer brick (D) to A24 IF multiplexer (P801) 1 N5242-60024
W66 A28 mixer brick (R4) to A24 IF multiplexer (P414) 1 N5242-60019
Table 1 Contents of Upgrade Kit N5245-60105
Ref
Desig. Description Qty Part Number

Installation Note N5245-90015 11
Items Included in the Upgrade Kit
W67 A28 mixer brick (R3) to A24 IF multiplexer (P413) 1 N5242-60020
W68 A28 mixer brick (C) to A24 IF multiplexer (P601) 1 N5242-60023
W70 A20 IF multiplexer (P203) to A12 SPAM (J2) 1 N5242-60013
W72 A20 IF multiplexer (P603) to A12 SPAM (J5) 1 N5242-60015
W77 A14 frequency reference (J7) to A17 13.5 GHz (source 2) synth (J5) 1 N5242-60030
- Wire assembly, A23 test set motherboard J221 to ports 1/3 LED board
J1 2 N5225-60001
- Wire assembly, A23 test set motherboard J222 to ports 2/4 LED board
J1
- Ribbon cable, A23 test set motherboard J552 to A28 mixer brick (2) J52 1 N5247-60015
a. The three 13.5 GHz Synthesizer boards included in this kit are the RoHS compliant N5240-60076
boards. These new boards are not compatible with the old N5230-60002 13.5 GHz Synthesizer
boards. If the boards installed in your PNA are the old N5230-60002, you must replace ALL of
them with the N5240-60076 boards included in this kit - refer to your PNA Service Guide’s chap-
ter 7 for instructions. If your PNA already contains the new boards, scrap the two extra
N5240-60076 boards included in this kit.
For the new N5240-60076 boards to function properly in your PNA, you must upgrade your PNA
firmware to rev A09.33xx or above. Download PNA firmware at: http://na.support.key-
sight.com/pna/firmware/firmware.html.
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 1 Contents of Upgrade Kit N5245-60105
Ref
Desig. Description Qty Part Number

12 Installation Note N5245-90015
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 Cables.”
“Step 7. Remove the A27 Mixer Brick Assembly.”
“Step 8. Assemble the A28 Mixer Brick Assembly.”
“Step 9. Install the A27/A28 Mixer Bricks Assembly.”
“Step 10. Assemble the A30 and A31 Reference Coupler Assemblies.”
“Step 11. Install the A30 and A31 Reference 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 Test
Set Front Plate.”
“Step 14. Install the Coupler Plate Assembly to the Deck.”
“Step 15. Assemble the A10 26.5 GHz Source 2 Assembly.”
“Step 16. Assemble and Install the A12 and A13 Doubler Assemblies.”
“Step 17. Install the A10 26.5 GHz Source 2 Assembly and Cables.”
“Step 18. Install the A17 13.5 GHz (Source 2) Synthesizer Board and Cables.”
“Step 19. Install the Test Set Cables.”
“Step 20. Secure the Front Panel Bulkhead Connectors.”
“Step 21. Reinstall the A23 Test Set Motherboard.”
“Step 22. Disassemble the 2-Port Front Panel and Assemble the 4-Port Front
Panel.”
“Step 23. Reinstall Front Panel Assembly.”
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.

Installation Note N5245-90015 13
Installation Procedure for the Upgrade
“Step 24. Install the Overlays.”
“Step 25. Install the Front Panel Jumper Cables.”
“Step 26. Position the Cables and Wires to Prevent Pinching.”
“Step 27. Reinstall the Inner Cover.”
“Step 28. Reinstall the Outer Cover.”
“Step 29. Enable Option P04 (400).”
“Step 30. Perform Post-Upgrade Adjustments and Calibration.”
“Step 31. Prepare the PNA for the User.”
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
PDF Service Guide1.
Step 3.Remove the Inner Cover
For instructions, click the Chapter 7 bookmark “Removing the Covers” in the
PDF Service Guide1.
Step 4.Remove the Front Panel Assembly
For instructions, click the Chapter 7 bookmark “Removing and Replacing the
Front Panel Assembly” in the PDF Service Guide1.
1. See “Downloading the Online PNA Service Guide” on page 6.

14 Installation Note N5245-90015
Installation Procedure for the Upgrade
-
Step 5. Remove the A23 Test Set Motherboard
For instructions, click the Chapter 7 bookmark “Removing and Replacing the
A23 test set motherboard” in the PDF Service Guide1.
Step 6. Remove Some Cables
1. Place the analyzer bottom-side up on a flat surface.
2. Remove and discard the following gray flexible cables:
—W130 A20 IF multiplexer (P203) to A12 SPAM (J5)
—W129 A20 IF multiplexer (P603) to A12 SPAM (J2)
3. Remove all bottom-side (test set) semirigid cables except for those in the
following table. Do not discard the cables that are removed because some
will be reused later in the procedure.
To see an image showing the location of cables W11, W17, and W51 click
the Chapter 6 bookmark “Top Cables, All Cables - All Options” in the PDF
Service Guide1. To see an image showing the location of cables W55,
W56, and W57, click the Chapter 6 bookmark “Bottom RF Cables, 2-Port,
Option 200” in PDF Service Guide1. Do not discard the cables because
some will be reused later in the procedure.
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.
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.
Reference
Designator TypeaPart Number Qty Description
W11 SR N5245-20036 1 A7 port 1 doubler to W12
W17 SR N5245-20036 1 A8 port 2 doubler to W18
W51 SR N5245-20101 1 A15 13.5 GHz (LO) synthesizer board J1207 to A25 HMA26.5
W55 SR N5245-20102 1 A7 port 1 doubler to W56
W56 SR N5245-20103 1 W55 to rear-panel EXT TSET DRIVE RF OUT (J6)
W57 SR N5245-20012 1 A27 mixer brick to EXT TSET DRIVE LO OUT (J5)
a. SR = semirigid coaxial cable.

Installation Note N5245-90015 15
Installation Procedure for the Upgrade
4. Remove and discard the following gray flexible cables:
— W62 (N5242-60025) A27 mixer brick (R1) to A24 IF multiplexer (P601)
—W63 (N5242-60026) A27 mixer brick (R2) to A24 IF multiplexer (P801)
5. Leave the remaining gray flexible cables, the wire harnesses, and the
ribbon cables connected where possible. Any that are removed should be
labeled for reconnection later.
Step 7.Remove the A27 Mixer Brick Assembly
Remove the A27 mixer brick assembly from the PNA. For instructions, click the
Chapter 7 bookmark, “Removing and Replacing the A27 and A28 Mixer Bricks”
in the PDF Service Guide1.
Step 8.Assemble the A28 Mixer Brick Assembly
1. Follow the two instructions shown in Figure 1. New parts are listed in
Table 1 on page 8 of this document.
Figure 1 A28 Mixer Brick Assembly
1. See “Downloading the Online PNA Service Guide” on page 6.

16 Installation Note N5245-90015
Installation Procedure for the Upgrade
-
2. Follow the four instructions shown in Figure 2.
Figure 2 Shields, Splitter, and 3 dB Pad Installation

Installation Note N5245-90015 17
Installation Procedure for the Upgrade
3. Connect the gray flexible cables in the order shown in Figure 3.
Figure 3 A28 Mixer Brick Cable Installation
Step 9. Install the A27/A28 Mixer Bricks Assembly
Install the A27/A28 mixer brick assembly, reusing the 4 existing screws. For
instructions, click the Chapter 7 bookmark, “Removing and Replacing the A27
and A28 Mixer Bricks” in the PDF Service Guide. New parts are listed in Table 1
on page 8 of this document.
Graphics in this document such as Figure 3 use very brief text to instruct
where to connect a cable. For example, text that reads “N5242-60018
IFMUX P201 - BRK1 B” means to connect the N5242-60018 gray flexible
cable at the A24 IF MUX board connector P201 and at A27 Mixer Brick 1
connector B

18 Installation Note N5245-90015
Installation Procedure for the Upgrade
-
Step 10.Assemble the A30 and A31 Reference Coupler Assemblies
Follow the instruction shown in Figure 4. New parts are listed in Table 1 on
page 8 of this document.
Figure 4 A30 and A31 Reference Coupler Assembly

Installation Note N5245-90015 19
Installation Procedure for the Upgrade
Step 11.Install the A30 and A31 Reference Coupler Assemblies
Install the A30 and A31 reference coupler assemblies. For instructions, click
the Chapter 7 bookmark, “Removing and Replacing the A29-A32 Reference
Couplers and Reference Coupler Mounting Brackets” in the PDF Service
Guide1. New parts are listed in Table 1 on page 8 of this document.
Step 12.Assemble the A33 - A36 Test Port Coupler Assemblies
1. Remove the A33 test port 1 coupler and A36 test port 2 coupler from the
PNA. For instructions, click the Chapter 7 bookmark, “Removing and
Replacing the A33 - A36 Test Port Couplers” in the PDF Service Guide.
2. Using pliers, remove the adhesive bumper on the A33 test port 1 coupler
and on the A36 test port 2 coupler.
3. Follow the two instructions shown in Figure 5. New parts are listed in
Table 1 on page 8 of this document.
Figure 5 A33 - A36 Test Port Coupler Assembly

20 Installation Note N5245-90015
Installation Procedure for the Upgrade
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Step 13.Install the LED Boards and Test Port Coupler Assemblies to
the Test Set Front Plate
1. Remove two screws from each LED board and remove the boards from the
2-port test set front plate of the PNA.
2. Remove the 2-port test set front plate from the test set deck.
3. Follow the instructions shown in Figure 6.
Figure 6 LED Board Assemblies and Test Port Coupler Assemblies Installation