Keysight 4-Port
N5224/5/7B and N5244/5/7B Models
PNA Direct Digital Synthesizer (DDS)
For Version 7 Dual-Source Synthesizer
Upgrade Kit
This manual provides documentation for the following models:
To Upgrade 4-Port B models to 4-Port B models with DDS
N5224BU-4S7 (for N5224B), N5225BU-4S7 (for N5225B), N5227BU-4S7
(for N5227B), N5244BU-4S7 (For N5244B), N5245BU-4S7 (For N5245B),
and N5247BU-4S7 (For N5247B)
Upgrade Kit Number: N5225-60143
Installation Note
Notices
© Keysight Technologies, Inc.
2007-2021
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
N5225-90143
Edition
Edition 1, January 14, 2021
Supersedes: January 2021
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
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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
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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
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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
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documentation. No additional
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extent that those terms, rights, or
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from all providers of commercial
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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 Direct Digital Synthesizer (DDS) 4-Port Upgrade Kit
Upgrade Kit Numbers: N5225-60143
Installation Note
Description of this Upgrade
This upgrade adds direct digital synthesis capability to your microwave
network analyzer. This is done by removing the existing frequency reference,
13.5 GHz synthesizer boards (x3), and installing a new direct digital synthesizer
assembly.
Refer to “Overview of the Installation Procedure” on page 10.
This upgrade adds the following items to your
network analyzer:
— direct digital synthesizer (DDS) assembly
— new left outer and inner panels
— new cables
This repair must be done at a service center or a self-maintainer service
center! Refer to “Getting Assistance from Keysight” on page 4.
N5224/5/7B or N5244/5/7B
3
-
Description of this Upgrade
Getting Assistance from Keysight
Getting Assistance from Keysight
By internet or phone, get assistance with all your test and measurement needs.
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 N5225-90143
Description of this 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 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 7.
— Enough time - refer to “About Installing the Upgrade” on page 7.
“Downloading the Online PNA Service Guide” on page 5 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
Downloading the Online PNA Service Guide
To view the 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: N5247B)
and click Search.
3. Click Services & Support > Document Library > Manuals or under Refine
Your Results:
4. Click Manuals > 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.
1
.
1. See “Downloading the Online PNA Service Guide” on page 5.
Installation Note N5225-90143 5
-
Description of this Upgrade
Getting Prepared
Protecting Your Workspace from Electrostatic Discharge
For information, click on the Chapter 1 bookmark, "Electrostatic Discharge
Protection" in the PDF of your instrument’s Service Guide on
1
www.keysight.com
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
.
1. See “Downloading the Online PNA Service Guide” on page 5.
6 Installation Note N5225-90143
Description of this Upgrade
Tools Required for the Installation
Tools Required for the Installation
Description Qty
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 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
T-6 TORX driver - 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
Needle nose pliers 1
Flat head screwdriver 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
9 mm nutsetter or open end torque wrench set to 21 in-lb.
About Installing the Upgrade
Products affected All N5224/5/7B, N5244/5/7B 4-port microwave network
Installation to be performed by Keysight service center, personnel qualified by Keysight, or
Estimated installation time 3 hours
Estimated adjustment time 3 hours
Estimated full instrument calibration time 4.5 hours
analyzers
customer
Installation Note N5225-90143 7
-
Description of this 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 “Description of this
Upgrade” on page 3.
This section applies to multiple models and upgrade kits. Please refer to
the model and upgrade kit for your instrument’s upgrade.
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 N5225-60143 Option 4S7 (DDS)
Ref
Desg.
- Installation Note (this document) 1 N5225-90143
- China RoHS Addendum 1 9320-6722
A15 Direct digital synthesizer (DDS) assembly (Assembly contains four synthesizers) 1 N5240-60102
A55 Solid State Drive Assembly for 2.2 GHz CPU and Win10 in N52xxB 1 N5242-60135
Screw-Machine W/Crest-Cup-Con-Washer Pan-HD Torx-T10 M3X0.510mm-LG
-
SST-300 Passivated – (x2 bracket-center, stabilizer (all options), x2 short and rear
panel bracket)
Screw-Machine W/Crest-Cup-Con-Washer Pan-HD Torx-T10 M3X0.5 8mm-LG
SST-300 Passivated – (x2 secure DDS to chassis)
Description
Qty
4 0515-0374
4 0515-0380
Part Number
- Microwave Plug SMA Male Straight 50-Ohm 1 1250-4261
W1 Cable assy-RF, A15 13.5 GHz (SRC 1) direct digital synthesizer (J4)-SRC 1 RF IN 1 N5240-20124
W51/
W61
W2 Cable assy -RF, A15 13.5 GHz (SRC 2) direct digital synthesizer (J6)-SRC 2 RF IN 1 N5240-20126
W201 Cable assy –RF, A15 DD synthesizer (J7) to rear panel (J13) – (Option 422/423 only) 1 N5240-20127
W200 Cable assy, RF CA, SYNTH J11-SPAM J3 1 N5240-60115
W208 A70/A75 LFE board to A15 DD Synth Source 1 J12 to A70 LFE J20 1 N5240-60112
W209 A70/A75 LFE board to A15 DD Synth Source 2 J14 to A70 LFE J21 1 N5240-60114
W210 A70/A75 LFE board to A15 DD Synth LO J13 to A70 LFE J18 1 N5240-60113
8 Installation Note N5225-90143
Cable assy -RF, A15 13.5 GHz (LO) direct digital synthesizer (J5)-HMA RF IN
- Bracket, rear plate (Option 422/423 only) 1 N5240-00015
- Bracket-center, stabilizer, long 1 N5240-20136
1
N5240-20125
Description of this Upgrade
Installation Procedure for the Upgrade
Table 1 Contents of Upgrade Kit N5225-60143 Option 4S7 (DDS)
Ref
Desg.
- Label, SRC3 J13 – Rear panel – (Option 422/423 Only) 1 N5240-80042
Description
Qty
Part Number
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.
Installation Note N5225-90143 9
-
Description of this Upgrade
Overview of the Installation Procedure
Overview of the Installation Procedure
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.
All instruments:
“Step 1. Verify PNA and Erase Flash” on page 11
“Step 2. Remove the Inner and Outer covers” on page 13
“Step 3. Remove Some Cables (All Models) and Some Bottom Assemblies
(Options 405, 420, and 425 Only)” on page 13
“Step 4. Remove Some Top Cables” on page 17
“Step 5. Remove the Left and Right Inner Bracket’s #4 Card Guides” on
page 19
“Step 6. Install the Center Bracket” on page 20
“Step 7. Reinstall Bottom Cables” on page 21
“Step 8. Reinstall Top Assemblies Reinstall the A5 through A16 (Except A15
Direct Digital Synthesis (DDS) Assembly) and Cables” on page 22
“Step 9. Install *NEW* A15 Direct Digital Synthesizer (DDS) Assembly” on
page 23
“Step 10. Install *NEW* and Reused Direct Digital Synthesis (DDS) Assembly
Cables” on page 25
“Step 11. Route Gray Cables” on page 30
“Step 12. Add Back Plate and Cable to Rear Panel (Option 422/423 With and
Without 029 Only)” on page 32
“Step 13. Install "SRC3 J13" Label on Rear Panel (Option 422/423 With and
Without Option 029 Only)” on page 34
“Step 14. Remove and Replace the A55 Solid State Drive (SSD)” on page 34
“Step 15. Boot the Instrument” on page 35
“Step 16. Reinstall the Inner and Outer Covers” on page 35
“Step 17. Verify the PNA Analyzer Program is Running with the Correct
Options” on page 35
“Step 18. Perform Post-Upgrade Adjustments and Calibration” on page 36
10 Installation Note N5225-90143
Description of this Upgrade
Step 1. Verify PNA and Erase Flash
“Step 19. Prepare the PNA for the User” on page 39
Step 1. Verify PNA and Erase Flash
This section verifies the PNA boots normally and if OK, deletes the flash in
preparation for installing and calibrating the new synthesizer assembly. Refer
to Figure 1 on page 12.
1. Turn on your PNA.
2. Verify it boots up without errors.
If there are errors, refer to your instrument’s Chapter 4 "Troubleshooting"
in the PDF Service Guide
3. If your PNA boots up normally.
4. Open the SCPI Parser Console: System > System Setup… > Remote
Interface… > then click Show SCPI Parser Console
1
.
1. See “Downloading the Online PNA Service Guide” on page 5.
Installation Note N5225-90143 11
-
Description of this Upgrade
Step 1. Verify PNA and Erase Flash
Figure 1 Open SCPI Parser Console
12 Installation Note N5225-90143
Description of this Upgrade
Step 2. Remove the Inner and Outer covers
5. In the SCPI parser window: Enter the following command to erase the
flash ROM:
DIAGnostic:FLASH:ERASe
For assistance with sending SCPI commands, refer to the PNA Help file on
www.keysight.com.
6. Enter the following query to verify the flash was erased:
DIAGnostic:FLASH:CATalog?
7. If the does not return any data, then power down the PNA and continue to
the next step.
8. If the DIAG:FLASH:CAT? returns any data, repeat steps 5 and 6.
9. If you repeat steps 5 and 6. and still have data being returned, then refer to
“Contacting Keysight” on page 4.
Step 2. Remove the Inner and Outer covers
For instructions, click the Chapter 7 bookmark “Removing the Covers” in the
PDF Service Guide
1
.
Step 3. Remove Some Cables (All Models) and Some Bottom Assemblies (Options 405, 420, and 425 Only)
Carefully, turn the instrument so it is bottom side up on a flat surface.
This section contains two sub-steps. Choose the ones that are applicable for
your model’s options:
— “Step 2a. Remove Some Cables (All Models)” on page 14
— “Step 2b. Remove/Reinstall Some Bottom Assemblies and Old/New
Cables (LFE Models, With Options 405, 420, and 425)” on page 14
Be careful not to damage the center pins of the semi-rigid 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.
1. See “Downloading the Online PNA Service Guide” on page 5.
Installation Note N5225-90143 13
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