Keysight Technologies N5244BU-679 User manual

INSTALLATION GUIDE
)
Keysight
Add 4-Port Capability
For Version 7, Dual-
Source Synthesizers
(For Models With
Direct Digital
Synthesis (Only))
Upgrade Kit
To Upgrade PNA-X N5244B or
N5245B Option 219 to Option 419
Upgrade Kit Order Number:
N5244BU-679 and N5245BU-679
Keysight Kit Number: N5245-60133
This is an Installation Note for the N5244/45B Option 219 to 419 Microwave
Vector Network Analyzers with Version 7 synthesizers.

Notices
© Keysight Technologies, Inc.
2009-2022
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
N5245-90133
Edition
Edition 1, November 2022
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,
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REGARD TO THIS MANUAL AND
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HEREIN, INCLUDING BUT NOT
LIMITED TO THE IMPLIED
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FOR ERRORS OR FOR INCIDENTAL
OR CONSEQUENTIAL DAMAGES IN
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PERFORMANCE OF THIS
DOCUMENT OR ANY INFORMATION
CONTAINED HEREIN. SHOULD
KEYSIGHT AND THE USER HAVE A
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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,
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documentation. No additional
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beyond those set forth in the
EULA shall apply, except to the
extent that those terms, rights, or
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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.

3

4

5
Keysight Add Option 419 Upgrade Kit
Upgrade Kit Number: N5245-60133
Installation Note
Description of the Upgrade
This upgrade converts your N5244B or N5245B Option 219 2-port analyzer to
a N5244B or N5245B Option 419 4-port analyzer by adding:
— an additional source
— a x4 direct digital synthesizer (DDS) assembly
— two additional doublers
—anadditionalmixerbrick
— two additional reference couplers
— two additional test port couplers
— two additional bias tees
— two additional source attenuators
— two additional receiver attenuators
—asplitter
— a modified front panel
—manynewcables
Refer to “Overview of the Installation Procedure” on page 16.
If you had an A model PNA-X with Option 219/419 with Option H85 that
was upgraded to a B model, please refer to Options 217/417. If you had an
A model PNA-X with Option 224/423 with Option H85 that was upgraded
to a B model then refer to Option 222/422.
This repair must be done at a service center or a self-maintainer service
center! Refer to “Getting Assistance from Keysight” on page 6.
This upgrade kit is for upgrading 2-port Option 219 models with (x2) direct
digital synthesis (DDS) to a 4-port Option 419 with DDS only.

6 Installation Note N5245-90133
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.
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.
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 N5245-90133 7
Description of the Upgrade
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-X Service Guide - refer to
“Downloading the Online PNA-X 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 11.
— Enough time - refer to “About Installing the Upgrade” on page 11.
— 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-X 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 new A25 HMA26.5
Multiplier/Amplifier and A27/A28 mixer brick assemblies. Your model
instrument may have either legacy assemblies or the new parts
installed.
—To verify your instrument’s A25 HMA26.5 Multiplier/Amplifier, refer to
“Verify the Model/Version of HMA26.5 Installed” on page 9.
—The A27/A28 mixer bricks might be a legacy part number 5087-7323
(with (x2) discrete 3dB attenuators, 08490-60010) or new part number
5087-7417 (with integrated 3 dB attenuators).
—See also your instrument’s PDF Service Guide a.
a. See “Downloading the Online PNA-X Service Guide” on page 10.
1. See “Downloading the Online PNA-X Service Guide” on page 10.

8 Installation Note N5245-90133
Description of the Upgrade
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
— 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 8.
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 6.
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
https://www.keysight.com/us/en/assets/9018-04534/installation-guides
/9018-04534.pdf (N5242-90024).
The enclosed Software Entitlement Certificate is a receipt, verifying that
you have purchased a licensed option for the PNA-X 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 N5245-90133 9
Description of the Upgrade
Getting Prepared
Verify the Model/Version of HMA26.5 Installed
This upgrade kit contains components for use with PNA-X models using the
legacy HMA26.5 part number 5086-7765. If your PNA-X 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 5087-7765 HMA26.5, please discard the N5245-20195
semi-rigid cables. Refer to Figure 1 on page 9.)
The new N5240-60101 HMA26.5 has the splitter integrated into the assembly.
Refer to Figure 1 on page 9.
Figure 1 Comparison of Legacy HMA26.5 (5087-7765) and New HMA26.5
(N5240-60101)

10 Installation Note N5245-90133
Description of the Upgrade
Getting Prepared
-
Downloading the Online PNA-X Service Guide
To view the online Service Guide for your PNA-X model number, use the
following steps:
1. Go to www.keysight.com.
2. In the Search box, enter the model number of the analyzer (e.g., N5225B)
and click Search.
3. Click Support > Keysight Product Support.
4. In the Search Support area type your instrument’s model number (e.g.,
N2225B).
5. Press Enter.
6. Scroll down to the PRINT DOCUMENTATION section and click to select
Service Manual.
The Service Manual for your instrument will be displayed near the top of
the right column.
7. Click the hyperlink of the Service Guide title to download the PDF file.
8. 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
1. See “Downloading the Online PNA-X Service Guide” on page 10.
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 N5245-90133 11
Description of the Upgrade
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) 1 N/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 cable connectors. On the bias tees use a
5/16-in torque wrench set to 9 in-lbs. On the bulkhead connectors, use a 9
mm nutsetter or open end torque wrench set to 21 in-lb.
Products affected N5244B and N5245B Option 219 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

12 Installation Note N5245-90133
Description of the Upgrade
Items Included in the Upgrade Kit
-
Items Included in the Upgrade Kit1
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 6.
1. In addition to the upgrade kit, the shipment includes an Software Entitlement Certificate. Refer to “License
Key Redemption” on page 8 for important information about this certificate.
Table 2 Contents of Upgrade Kit N5245-60133
Ref
Desig. Description Qty Part Number
- Installation note (this document) 1 N5245-90133
- Software Entitlement Certificate 1 5964-5145
- China RoHS Addendum 1 9320-6722
A10 26.5 GHz source (2) assembly 1 5087-7780
A12 Doubler assembly, port 3 2 5087-7349
A13 Doubler assembly, port 4
A15 Direct digital synthesizer (DDS) assembly (Assembly contains two synthesizers) 1 N5240-60102
A26aSplitter 1 5067-4086
A28 Mixer brick (2) 1 5087-7417
A30 Test port 3 reference coupler 2 5087-7760
A31 Test port 4 reference coupler
A34 Test port 3 coupler 2 5087-7793
A35 Test port 4 coupler
A39 Test port 3 source attenuator 2 33325-60022
A40 Test port 4 source attenuator
A43 Test port 3 bias tee (includes wire harness) 2 5087-7789
A44 Test port 4 bias tee (includes wire harness)
A47 Test port 3 receiver attenuator 2 33325-60023
A48 Test port 4 receiver attenuator
- dress panel overlay, lower 4-port 1 N5240-00009
- Test set front plate, 4-port 1 N5224-00005
- Machine screw, M2.0 x 6, flat head (to attach 2 reference couplers to brackets) 8 0515-1602
- Machine screw, M3.0 x 18, pan head (to attach bracket to source 2) 1 0515-0666

Installation Note N5245-90133 13
Description of the Upgrade
Items Included in the Upgrade Kit
- 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 to chassis; 2 to attach A12
doubler 3 to chassis; 2 to attach A13 doubler 4 to chassis; 2 to attach A17 13.5 GHz
source 2 synthesizer board to chassis)
8 0515-0380
- Machine screw, M3.0 x 8, pan head (3 to attach shield to mixer brick; 8 to attach 2 src
attn and 2 rcvr attn to brackets; 4 to attach 2 bias tee brackets to chassis; 1 to attach
cable bracket to deck)
16 0515-0372
- Machine screw, M2.5 x 16, pan head (to attach splitter to mixer brick) 2 0515-2007
- Machine screw, M3.0 x 6, pan head (4 to attach 2 receiver attenuator/bracket assy. to
deck; 4 to attach 2 source attenuator/bracket assy to deck)
8 0515-0430
- Machine screw, 90-DEG-flat-HD, M4.0 x 10, pan head (attach dress panel near ports
3 and 4 to coupler plate)
2 0515-1946
- Machine screw, 90-DEG-flat W/PATCH-LK, M3.0 x 20, pan head (to attach bracket to
source 2)
2 0515-2078
- Machine screw, M3.0 x 14, pan head (to attach 2 bias tees to brackets) 4 0515-2994
- Front panel overlay, lower 4-port 1 N5242-80025
- 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
- Bracket, source (Attach bracket to A10 Source 2) 1 N5247-20136
- Shield, mixer brick 1 N5245-00023
- 50 ohm load, attached to W58 (N5245-20095) 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 N5242-00049
- Cable tie wrap, 1 to secure W21 (N5245-20008) to side of deck 5 1400-0249
- Cable clamp, 1 to secure W25 (N5245-20116) to deck 5 1400-1334
- Bracket for bias tee 2 N5245-00011
- Bracket for reference coupler 2 N5245-00017
- Bracket for cables 1 N5245-00022
- Bracket for source attenuator 2 N5245-00015
- Bracket for receiver attenuator 2 N5225-00001
- Dust caps for test ports 4 1401-0214
Table 2 Contents of Upgrade Kit N5245-60133
Ref
Desig. Description Qty Part Number

14 Installation Note N5245-90133
Description of the Upgrade
Items Included in the Upgrade Kit
-
W2 RF cable, A11 13.5 GHz (SRC 2) direct digital synthesizer (J6)-SRC 2 RF IN P1 1 N5240-20126
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
W16 A31 port 4 reference coupler to W15 1 N5245-20044
W21 A29 port 1 reference coupler to A37 reference mixer switch 1 N5245-20008
W22 A33 port 1 coupler to front-panel Port 1 CPLR ARM 1 N5245-20014
W25 A30 port 3 ref coupler to front-panel REF 3 SOURCE OUT 1 N5245-20116
W26 A34 port 3 coupler to front-panel Port 3 CPLR ARM 1 N5245-20015
W29 A31 port 4 ref coupler to front-panel REF 4 SOURCE OUT 1 N5245-20117
W30 A35 port 4 coupler to front-panel Port 4 CPLR ARM 1 N5245-20018
W34 A36 port 2 coupler to front-panel Port 2 CPLR ARM 1 N5245-20019
W36 Front panel jumper 6 N5245-20155
W44 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
W46 REF 2 RCVR R2 IN to A27 mixer brick (R2) 1 N5245-20115
W52aRF cable, A25 HMA26.5 to A26 splitter 1 N5245-20013
W53aRF cable, A26 splitter to A27 mixer brick 1 N5245-20023
W54aRF cable, A26 splitter to A28 mixer brick 1 N5245-20022
W58 A28 mixer brick to 50 ohm load (1250-4261) 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
W67 A28 mixer brick (R3) to A24 IF multiplexer (P413) 1 N5242-60020
Table 2 Contents of Upgrade Kit N5245-60133
Ref
Desig. Description Qty Part Number

Installation Note N5245-90133 15
Description of the Upgrade
Items Included in the Upgrade Kit
W68 A28 mixer brick (C) to A24 IF multiplexer (P601) 1 N5242-60023
W70 A24 IF multiplexer board P203 to A16 SPAM board J2 (SPAM 4, 2-port & 4-port or
SPAM 5, 4-port)
1 N5242-60013
W72 A24 IF multiplexer board P603 to A16 SPAM board J5 (SPAM 5, 2-Port) 1 N5242-60015
W77 A14 frequency reference (J7) to A17 13.5 GHz (source 2) synth (J5) 1 N5242-60030
W84 A42 port 1 bias tee to front panel port 1 CPLR THRU 1 N5245-20085
W85 A30 port 3 reference coupler to A39 port 3 source attenuator 1 N5245-20026
W86 A39 port 3 source attenuator to front-panel Port 3 SOURCE OUT 1 N5245-20027
W87 Port 3 CPLR THRU to A43 port 3 bias tee 1 N5245-20089
W88 A43 port 3 bias tee to A34 port 3 coupler 1 N5245-20086
W89 A31 port 4 reference coupler to A40 port 4 source attenuator 1 N5245-20026
W90 A40 port 4 source attenuator to front-panel Port 4 SOURCE OUT 1 N5245-20028
W91 Port 4 CPLR THRU to A44 port 4 bias tee 1 N5245-20090
W92 A44 port 4 bias tee to A35 port 4 coupler 1 N5245-20088
W96 A45 port 2 bias tee to front panel port 2 CPLR THRU 1 N5245-20087
W99 Port 3 RCVR C IN to A47 port 3 receiver attenuator 1 N5245-20073
W100 A47 port 3 receiver attenuator to A28 mixer brick (C) 1 N5245-20066
W101 Port 4 RCVR D IN to A48 port 4 receiver attenuator 1 N5245-20074
W102 A48 port 4 receiver attenuator to A28 mixer brick (D) 1 N5245-20075
W203aRF cable, A25 HMA26.5 (top) to A28 mixer block (top) 1 N5245-20195
- Ribbon cable, A23 test set motherboard J547 to A39 port 3 source attenuator 2 N5245-60006
- Ribbon cable, A23 test set motherboard J548 to A40 port 4 source attenuator
- Ribbon cable, A23 test set motherboard J206 to A47 port 3 receiver attenuator 2 N5245-60026
- Ribbon cable, A23 test set motherboard J207 to A48 port 4 receiver attenuator
- 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, N5245-20101, 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-X has installed, refer to Chapter 7 Repairs and Figure 1 on page 9 and for details on A26
splitter and cabling, refer to your option-model in Chapter 6 "2-Port Configurations, Serial Number Prefix <6021"
and "4-Port Configuration, Serial Number Prefix <6021".
Table 2 Contents of Upgrade Kit N5245-60133
Ref
Desig. Description Qty Part Number

16 Installation Note N5245-90133
Description of the Upgrade
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 A47 and A48 Receiver Attenuator Assemblies.”
“Step 13. Install the A47 and A48 Receiver Attenuator Assemblies.”
“Step 14. Assemble the A39 and A40 Source Attenuator Assemblies.”
“Step 15. Install the A39 and A40 Source Attenuator Assemblies.”
“Step 16. Install the Bias Tee Brackets.”
“Step 17. Install the A43 and A44 Bias Tees.”
“Step 18. Assemble the A33 - A36 Test Port Coupler Assemblies.”
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.
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 N5245-90133 17
Description of the Upgrade
Installation Procedure for the Upgrade
“Step 19. Install the LED Boards and Test Port Coupler Assemblies to the Test
Set Front Plate.”
“Step 20. Install the Coupler Plate Assembly to the Deck.”
“Step 21. Remove the Old A11 (x2) Direct Digital Synthesizer (DDS) Assembly
and Cables.”
“Step 22. Install Bracket to A10 26.5 GHz Source 2 Assembly.”
“Step 23. Assemble the A10 26.5 GHz Source 2 Assembly.”
“Step 24. Assemble and Install the A12 and A13 Doubler Assemblies.”
“Step 25. Install the A10 26.5 GHz Source 2 Assembly and Cables.”
“Step 26. Install the *NEW* A11 (x4) Direct Digital Synthesizer (DDS)
Assembly and Cables.”
“Step 27. Install the Test Set Cables.”
“Step 28. Secure the Front Panel Bulkhead Connectors.”
“Step 29. Reinstall the A23 Test Set Motherboard.”
s
“Step 31. Reinstall Front Panel Assembly.”
“Step 32. Install the Overlays.”
“Step 33. Install the Front Panel Jumper Cables.”
“Step 34. Position the Cables and Wires to Prevent Pinching.”
“Step 35. Reinstall the Inner Cover.”
“Step 36. Reinstall the Outer Cover.”
“Step 37. Remove Option 219 License.”
“Step 38. Enable Options 419.”
“Step 39. Verify the PNA-X Analyzer Program is Running with the Correct
Options.”
“Step 40. Perform Post-Upgrade Adjustments and Calibration.”
“Step 41. Prepare the PNA-X 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 for installation of this upgrade. Refer to “License Key
Redemption” on page 8.
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.

18 Installation Note N5245-90133
Description of the Upgrade
Installation Procedure for the Upgrade
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Once the license key file 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.
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
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 6.
1. See “Downloading the Online PNA-X Service Guide” on page 10.
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.

Installation Note N5245-90133 19
Description of the Upgrade
Installation Procedure for the Upgrade
2. 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, S/N Prefix
≥6021” 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 219, S/N Prefix ≥6021” in the PDF Service Guide1.
1. Remove and discard the following gray flexible cables:
2. W147 (N5242-60025) A27 mixer brick (R1) to A24 IF multiplexer (P601)
3. W63 (N5242-60026) A27 mixer brick (R2) to A24 IF multiplexer (P801)
4. 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-X. 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 2 on page 12 of this document.
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.
1. See “Downloading the Online PNA-X Service Guide” on page 10.

20 Installation Note N5245-90133
Description of the Upgrade
Installation Procedure for the Upgrade
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Figure 1 A28 Mixer Brick Assembly (5087-7417, 0515-0667(x3), N5245-20125 (x4),
N5247-20138 (x1))