Page 1
Keysight Noise Figure
Measurement
Capability to
26.5 GHz Upgrade Kit
To Upgrade PNA N5244A and N5245A Options 400/419/423 or
400/419/423/H85 to include Option H29
Upgrade Kit Order Number: N5244AU- H29 and
N5245AU- H29
Keysight Kit Number: N5245-60109
Installation Note
Page 2
Notices
© Keysight Technologies,
Inc. 2004-2016
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
E8251-90359
Edition
Edition 1, January 2016
Printed in USA/Malaysia
Published by:
Keysight Technologies
1400 Fountaingrove Parkway
Santa Rosa, CA 95403
Warranty
THE MATERIAL CONTAINED IN THIS
DOCUMENT IS PROVIDED “AS IS,”
AND IS SUBJECT TO BEING
CHANGED, WITHOUT NOTICE, IN
FUTURE EDITIONS. FURTHER, TO
THE MAXIMUM EXTENT PERMITTED
BY APPLICABLE LAW, KEYSIGHT
DISCLAIMS ALL WARRANTIES,
EITHER EXPRESS OR IMPLIED WITH
REGARD TO THIS MANUAL AND
ANY INFORMATION CONTAINED
HEREIN, INCLUDING BUT NOT
LIMITED TO THE IMPLIED
WARRANTIES OF
MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE.
KEYSIGHT SHALL NOT BE LIABLE
FOR ERRORS OR FOR INCIDENTAL
OR CONSEQUENTIAL DAMAGES IN
CONNECTION WITH THE
FURNISHING, USE, OR
PERFORMANCE OF THIS
DOCUMENT OR ANY INFORMATION
CONTAINED HEREIN. SHOULD
KEYSIGHT AND THE USER HAVE A
SEPARATE WRITTEN AGREEMENT
WITH WARRANTY TERMS
COVERING THE MATERIAL IN THIS
DOCUMENT THAT CONFLICT WITH
THESE TERMS, THE WARRANTY
TERMS IN THE SEPARATE
AGREEMENT WILL CONTROL.
Technology Licenses
The hardware and/or software
described in this document are
furnished under a license and may be
used or copied only in accordance
with the terms of such license.
U.S. Government Rights
The Software is “commercial
computer software,” as defined
by Federal Acquisition Regulation
(“FAR”) 2.101. Pursuant to FAR
12.212 and 27.405-3 and
Department of Defense FAR
Supplement (“DFARS”) 227.7202,
the U.S. government acquires
commercial computer software
under the same terms by which
the software is customarily
provided to the public.
Accordingly, Keysight provides
the Software to U.S. government
customers under its standard
commercial license, which is
embodied in its End User License
Agreement (EULA), a copy of
which can be found at
http://www.keysight.com/find/sweula
The license set forth in the EULA
represents the exclusive authority
by which the U.S. government
may use, modify, distribute, or
disclose the Software. The EULA
and the license set forth therein,
does not require or permit,
among other things, that
Keysight: (1) Furnish technical
information related to
commercial computer software
or commercial computer
software documentation that is
not customarily provided to the
public; or (2) Relinquish to, or
otherwise provide, the
government rights in excess of
these rights customarily provided
to the public to use, modify,
reproduce, release, perform,
display, or disclose commercial
computer software or
commercial computer software
documentation. No additional
government requirements
beyond those set forth in the
EULA shall apply, except to the
extent that those terms, rights, or
licenses are explicitly required
from all providers of commercial
computer software pursuant to
the FAR and the DFARS and are
set forth specifically in writing
elsewhere in the EULA. Keysight
shall be under no obligation to
update, revise or otherwise
modify the Software. With
respect to any technical data as
defined by FAR 2.101, pursuant
to FAR 12.211 and 27.404.2 and
DFARS 227.7102, the U.S.
government acquires no greater
than Limited Rights as defined in
FAR 27.401 or DFAR 227.7103-5
(c), as applicable in any technical
data.
Safety Notices
A CAUTION notice denotes a hazard. It
calls attention to an operating
procedure, practice, or the like that,
if not correctly performed or adhered
to, could result in damage to the
product or loss of important data. Do
not proceed beyond a CAUTION
notice until the indicated conditions
are fully understood and met.
A WARNING notice denotes a hazard.
It calls attention to an operating
procedure, practice, or the like that,
if not correctly performed or adhered
to, could result in personal injury or
death. Do not proceed beyond a
WARNING notice until the indicated
conditions are fully understood and
met.
Page 3
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
N5245-90109
Edition
February 2016
Printed in USA/Malaysia
Published by:
Keysight Technologies
1400 Fountaingrove Parkway
Santa Rosa, CA 95403
Warranty
THE MATERIAL CONTAINED IN THIS
DOCUMENT IS PROVIDED “AS IS,”
AND IS SUBJECT TO BEING
CHANGED, WITHOUT NOTICE, IN
FUTURE EDITIONS. FURTHER, TO
THE MAXIMUM EXTENT PERMITTED
BY APPLICABLE LAW, KEYSIGHT
DISCLAIMS ALL WARRANTIES,
EITHER EXPRESS OR IMPLIED WITH
REGARD TO THIS MANUAL AND
ANY INFORMATION CONTAINED
HEREIN, INCLUDING BUT NOT
LIMITED TO THE IMPLIED
WARRANTIES OF
MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE.
KEYSIGHT SHALL NOT BE LIABLE
FOR ERRORS OR FOR INCIDENTAL
OR CONSEQUENTIAL DAMAGES IN
CONNECTION WITH THE
FURNISHING, USE, OR
PERFORMANCE OF THIS
DOCUMENT OR ANY INFORMATION
CONTAINED HEREIN. SHOULD
KEYSIGHT AND THE USER HAVE A
SEPARATE WRITTEN AGREEMENT
WITH WARRANTY TERMS
COVERING THE MATERIAL IN THIS
DOCUMENT THAT CONFLICT WITH
THESE TERMS, THE WARRANTY
TERMS IN THE SEPARATE
AGREEMENT WILL CONTROL.
Technology Licenses
The hardware and/or software
described in this document are
furnished under a license and may be
used or copied only in accordance
with the terms of such license.
U.S. Government Rights
The Software is “commercial
computer software,” as defined
by Federal Acquisition Regulation
(“FAR”) 2.101. Pursuant to FAR
12.212 and 27.405-3 and
Department of Defense FAR
Supplement (“DFARS”) 227.7202,
the U.S. government acquires
commercial computer software
under the same terms by which
the software is customarily
provided to the public.
Accordingly, Keysight provides
the Software to U.S. government
customers under its standard
commercial license, which is
embodied in its End User License
Agreement (EULA), a copy of
which can be found at
http://www.keysight.com/find/sweula
The license set forth in the EULA
represents the exclusive authority
by which the U.S. government
may use, modify, distribute, or
disclose the Software. The EULA
and the license set forth therein,
does not require or permit,
among other things, that
Keysight: (1) Furnish technical
information related to
commercial computer software
or commercial computer
software documentation that is
not customarily provided to the
public; or (2) Relinquish to, or
otherwise provide, the
government rights in excess of
these rights customarily provided
to the public to use, modify,
reproduce, release, perform,
display, or disclose commercial
computer software or
commercial computer software
documentation. No additional
government requirements
beyond those set forth in the
EULA shall apply, except to the
extent that those terms, rights, or
licenses are explicitly required
from all providers of commercial
computer software pursuant to
the FAR and the DFARS and are
set forth specifically in writing
elsewhere in the EULA. Keysight
shall be under no obligation to
update, revise or otherwise
modify the Software. With
respect to any technical data as
defined by FAR 2.101, pursuant
to FAR 12.211 and 27.404.2 and
DFARS 227.7102, the U.S.
government acquires no greater
than Limited Rights as defined in
FAR 27.401 or DFAR 227.7103-5
(c), as applicable in any technical
data.
Safety Notes
The following safety notes are
used throughout this document.
Familiarize yourself with each of
these notes and its meaning
before performing any of the
procedures in this document.
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.
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.
Page 4
Keysight Noise Figure Measurement Capability to 26.5 GHz Upgrade Kit
Keysight Upgrade Kit Order Number: N5244AU-H29 and N5245AU-H29
Installation Note
Description of the Upgrade
This kit may contain either a N5242-60098 or a N5245-60124. Either board
will work in your PNA. Refer to Table 1 on page 10.
This upgrade adds noise figure measurement capability to 26.5 GHz for your
Option 400/419/423 4-port analyzer or 400/419/423/H85 4-port analyzer by
adding Option H29 which includes:
— a noise downconverter assembly
— a noise receiver board assembly
—two noise bypass switches
—cables
3
Page 5
-
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Getting Assistance from Keysight
By internet or phone, get assistance with all your test and measurement needs.
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, email Keysight Component Test Division
(CTD) Support at [email protected], or telephone the CTD
Hotline at (707) 577-6802 and leave a voice mail message. Please include
details of the problem.
4 Installation Note N5245-90109
Page 6
Keysight Extended Power Range and Bias Tees
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Getting Prepared
The PNA contains extremely sensitive components that can be ruined if
mishandled. Follow instructions carefully when making cable connections,
especially wire harness connections.
The person performing the work accepts responsibility for the full cost of
the repair or replacement of damaged components.
To successfully install this upgrade kit, you will need the following:
—A license key - refer to “License Key Redemption” on page 6.
— A PDF copy or a paper copy of the PNA Service Guide - refer to
— An ESD-safe work area - refer to “Protecting Your Workspace from
— Correct tools - refer to “Tools Required for the Installation” on page 8.
“Downloading the Online PNA Service Guide” on page 6.
Electrostatic Discharge” on page 8.
— Enough time - refer to “About Installing the Upgrade” on page 9.
— Test equipment for the post-upgrade adjustments and full instrument
calibration. To view the equipment list, click the Chapter 3 PDF bookmark
1
“Tests and Adjustments” in the online Service Guide
.
1. See “Downloading the Online PNA Service Guide” on page 6.
Installation Note N5245-90109 5
Page 7
-
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Verify the Options Installed in the PNA and Discard Kit Contents That
Are Not Required
— If you already know which options are installed in the PNA, skip to the next
bullet.
If you don’t know which options are installed in the PNA, power it up, select
Help > About Network Analyzer, and note in the dialog box which options
are installed.
—In Table 1 on page 10, refer to the section “Cables and Overlay.” As per the
table, discard the cables and overlay that are not required for the options
installed in the PNA.
License Key Redemption
The enclosed Option Entitlement Certificate is a receipt, verifying that you
have purchased a licensed option for the PNA of your choice. You must
now use a Keysight Web page to request a license key for the instrument
that will receive the option.
To enable the option product, you must request a license key from:
http://www.keysight.com/find/softwarelicense. To complete the request, you
will need to gather the following information:
— From the certificate
— Order number
— Certificate number
— From your instrument
— Model number
— Serial number
—Host ID
The instrument information is available on the network analyzer – on the
analyzer’s Help menu, click About Network Analyzer.
If you provide an email address, Keysight will promptly email your license key.
Otherwise, you will your receive your license key via postal mail.
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: N5245A)
and click Search.
6 Installation Note N5245-90109
Page 8
Keysight Extended Power Range and Bias Tees
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
3. Click Technical Support > Manuals.
4. Click Service Manual.
5. Click the service guide title to load the PDF file.
6. When the PDF of the Service Guide is displayed, scroll through the
Contents section bookmarks to locate the information needed.
Installation Note N5245-90109 7
Page 9
-
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Protecting Your Workspace from Electrostatic Discharge
For information, click on the Chapter 1 PDF bookmark, “Electrostatic
Discharge Protection” in the online Service Guide
1
.
ESD Equipment Required for the Installation
Description Keysight Part Number
ESD grounding wrist strap 9300-1367
5-ft grounding cord for wrist strap 9300-0980
2 x 4 ft conductive table mat and 15-ft grounding wire 9300-0797
ESD heel strap (for use with conductive floors) 9300-1308
Tools Required for the Installation
Description Qty Part Number
T-8 TORX driver - set to 6 in-lbs (0.68 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
Use a 5/16-in torque wrench set to 10 in-lbs on all cable connections
except the front panel and some rear panel bulkhead connectors. Torque
these connections to 21 in-lb.
1. See “Downloading the Online PNA Service Guide” on page 6.
8 Installation Note N5245-90109
Page 10
Keysight Extended Power Range and Bias Tees
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
About Installing the Upgrade
Products affectedN5244A/45A 4-port Network Analyzer Options 400/419/423 or
Options 400/419/423/H85
Installation to be performed byKeysight service center or personnel qualified by Keysight
Estimated installation time5.0 hours
Estimated adjustment time0.5 hours
Estimated full instrument calibration time4.5 hours
Installation Note N5245-90109 9
Page 11
-
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Items Included in the Upgrade Kit
1
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 N5245-60109
Ref
Desig.
- Installation note (this document) 1 N5245-90109
- H29 User’s Guide 1 N5245-90013
Accessory Items
Note to Installer
These two items are used when performing vector-corrected noise figure measurements and are not used in the upgrade.
They are packaged separately in the kit and must remain with the analyzer.
- 2.4 mm male-to-2.4 mm female adapter used to connect an ECal module 1 85056-60007
- RF cable used to connect an ECal module 1 N5245-20140
Assemblies
A9 Noise receiver board 5201 and above:
5150 and below:
Description Qty Part Number
1 N5242-6012
4
Was:
N5242-60098
A56 Noise bypass switch, port 1 2 N1811-60031
A57 Noise bypass switch, port 2
A58 Bridge 1 5087-7794
A59 Noise downconverter 1 5087-7767
Hard ware/Miscellaneous
- Bracket, port 1 switch 1 N5245-00026
- Bracket, bridge/port 2 switch 1 N5245-00032
- Washer, lock, helical, 3.1 mm-ID, 6.2 mm-OD 2 2190-0584
- Machine screw, M3.0 x 14, pan head 3 0515-2994
1. In addition to the upgrade kit, the shipment includes an Option Entitlement Certificate. Refer to “License
Key Redemption” on page 6
for important information about this certificate.
Was
N1811-60009
Was
5087-7729
Was
5087-7316
Was
0515-0665
10 Installation Note N5245-90109
Page 12
Keysight Extended Power Range and Bias Tees
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Table 1 Contents of Upgrade Kit N5245-60109
Ref
Desig.
- Machine screw, M2.5 x 20, pan head 4 0515-1992
- Machine screw, M3.0 x 8, pan head 3 0515-0372
- Machine screw, M2.5 x 8, flat head 2 0515-2487
W141 Adapter, straight 2.92 mm male-to-2.92 mm male, 50 ohm;
A59 Noise Downconverter to A58 port 2 bridge
- Inner cover (to replace existing inner cover) 1 N5247-00004
- Mylar tape (applied to chassis in some older analyzers) 1 0460-0042
- Cable tie 5 1400-0249
- Dust cap for test port 4 1400-0214
Cables and Overlay (listed in the order in which they are installed)
Cables and Overlay for Options 400/419/423 Only
Discard these three parts if you have Option H85 installed in the PNA.
W135 A56 port 1 noise bypass switch to A42 port 1 bias tee 1 N5245-20082
W137 A57 port 2 noise bypass switch to A45 port 2 bias tee 1 N5245-20105
- Lower 4-port front panel overlay 1 N5242-80012
Description Qty Part Number
1 1250-3576
Cables and Overlay for Options 400/419/423/H85 Only
Discard these three parts if you do not have Option H85 installed in the PNA.
W125 A57 port 2 noise bypass switch to A36 test port 2 coupler 1 N5245-20138
W124 A56 port 1 noise bypass switch to A33 test port 1 coupler 1 N5245-20137
- Lower 4-port front panel overlay 1 N5242-80019
Cables for Both Options 400/419/423 and 400/419/423/H85
- Ribbon cable: A59 noise downconverter to A23 test set motherboard J550 1 N5245-60013
W152 A59 noise downconverter J4 to A9 noise receiver board J9 1 N5242-60041
W140 A57 port 2 noise bypass switch to A58 port 2 bridge arm 1 N5245-20107
W139 A57 port 2 noise bypass switch to A58 port 2 bridge thru 1 N5245-20079
W136 A57 port 2 noise bypass switch to front-panel Port 2 CPLR THRU 1 N5245-20080
W134 A56 port 1 noise bypass switch to front-panel port 1 CPLR THRU 1 N5245-20084
W133 A56 port 1 noise bypass switch to front-panel port 1 SOURCE OUT 1 N5245-20083
W132 A56 port 1 noise bypass switch to A38 port 1 source attenuator 1 N5245-20081
W154 A59 noise downconverter to A28 mixer brick 1 N5245-20132
W151 A59 noise downconverter LO Out to A9 noise receiver board LO In 1 N5245-20133
W153 A59 noise downconverter RF Out to A9 noise receiver board RF In 1 N5245-20134
Installation Note N5245-90109 11
Page 13
-
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
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.
12 Installation Note N5245-90109
Page 14
Keysight Extended Power Range and Bias Tees
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
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
The next steps of this installation require the removal of the
analyzer’s protective outer covers. The analyzer must be powered
down and disconnected from the mains supply before performing
these steps.
“Step 1. Obtain a Keyword.”
“Step 2. Remove the Outer Cover.”
“Step 3. Remove the Inner Cover.”
“Step 4. Remove the Front Panel Assembly.”
“Step 5. Locate the Corner of the Test Set Motherboard Shown in Figure 1.”
“Step 6. Remove the A23 Test Set Motherboard.”
“Step 7. Inspect Test Set Deck Chassis to Determine if Tape is Needed.”
“Step 8. Remove Some Existing Cables.”
“Step 9. Assemble the A58 Bridge and A59 Noise Down Converter.”
“Step 10. Assemble the Noise Assembly onto the Bracket.”
“Step 11. Install the Switch to the Noise Assembly.”
“Step 12. Install the Noise Assembly to the Chassis.”
“Step 13. Assemble the A56 Port 1 Noise Bypass Switch onto the Bracket.”
“Step 14. Install the A56 Noise Bypass Switch.”
“Step 15. Install the Test Set Cables.”
“Step 16. Install the A9 Noise Receiver Board.”
“Step 17. Replace the Lower Front Panel Overlay.”
“Step 18. Reinstall the A24 IF Multiplexer Board.”
“Step 19. Reinstall the A23 Test Set Motherboard.”
“Step 20. Install the New Ribbon Cable on the A23 Test Set Motherboard.”
“Step 21. Reroute the A44 and A45 Bias Tees Wire Harnesses.”
“Step 22. Reinstall Front Panel Assembly.”
“Step 23. Position the Cables and Wires to Prevent Pinching.”
Installation Note N5245-90109 13
Page 15
-
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
“Step 24. Install the New Inner Cover.”
“Step 25. Reinstall the Outer Cover.”
“Step 26. Enable Option H29.”
“Step 27. Verify Option 028 is Not Installed.”
“Step 28. Perform Post-Upgrade Adjustments and Calibration.”
“Step 29. Prepare the PNA for the User.”
Step 1.Obtain a Keyword
Follow the instructions on the keyword Entitlement Certificate supplied to
obtain a keyword for installation of this upgrade.
Once the keyword has been obtained, you can proceed with the installation.
Step 2.Remove the Outer Cover
For instructions, click the Chapter 7 bookmark "Removing the Covers" in the
1
PDF Service Guide
.
Step 3.Remove the Inner Cover
For instructions, click the Chapter 7 bookmark “Removing the Covers” in the
PDF Service Guide
1
. This inner cover may be discarded since it will be replaced
later.
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 Guide
1
.
1. See “Downloading the Online PNA Service Guide” on page 6.
14 Installation Note N5245-90109
Page 16
Keysight Extended Power Range and Bias Tees
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Step 5.Locate the Corner of the Test Set Motherboard Shown in
Figure 1
Locate the corner of the Test Set Motherboard shown in Figure 1 - look for the
two small black connectors labeled J554 and J101. Later, you will examine the
test set deck chassis underneath this corner of the board.
Figure 1 Corner of Test Set Motherboard to be Located
Step 6.Remove the A23 Test Set Motherboard
For instructions, click the Chapter 7 bookmark “Removing and Replacing the
1
A23 test set motherboard” in the PDF Service Guide
Installation Note N5245-90109 15
.
Page 17
-
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Step 7.Inspect Test Set Deck Chassis to Determine if Tape is Needed
Examine the test set deck chassis under the corner of the Test Set
Motherboard you located earlier, and compare it to the photo in Figure 2. If a
cut-out notch exists on the chassis where the tape is shown in Figure 2, you do
NOT need to install the tape. However, if a cut-out notch does NOT exist,
install a piece of mylar tape (included in the kit contents) as shown in the
graphic. The tape eliminates any possibility of the Test Set Motherboard
shorting against the test set deck.
Figure 2 Test Set Deck Chassis with Mylar Tape Installed
16 Installation Note N5245-90109
Page 18
Keysight Extended Power Range and Bias Tees
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Step 8.Remove Some Existing Cables
Be careful not to damage the center pins of the semirigid cables. Some
flexing of the cables may be necessary but do not over-bend them.
1. Place the analyzer bottom-side up on a flat surface.
2. Remove the following cables in the order listed. These two cables may be
discarded - they will not be reinstalled.
To see an image showing the location of these cables, click either the
Chapter 6 bookmark “4-Port Configuration, Options 400/419/423” or
“4-Port Configuration, Options 400/419/423/H85” in the PDF Service
1
Guide
— W82 (N5245-20077) A38 port 1 source attenuator to front-panel Port 1
SOURCE OUT
— W58 (N5245-20095) A28 mixer brick to 50 ohm load
Option 400/419/423 only:
.
1. Remove the following cables in the order listed. These three cables may
be discarded - they will not be reinstalled.
To see an image showing the location of these cables, click the Chapter 6
bookmark “4-Port Configuration, Options 400/419/423” in the PDF Service
1
Guide
.
— W96 (N5245-20087) A45 port 2 bias tee to front-panel Port 2 CPLR THRU
— W84 (N5245-20085) A42 port 1 bias tee to front-panel Port 1 CPLR THRU
Option 400/419/423/H85 only:
1. Remove the following cables in the order listed. These two cables may be
discarded - they will not be reinstalled.
To see an image showing the location of these cables, click the Chapter 6
bookmark “4-Port Configuration, Options 400/419/423/H85” in the PDF
1
Service Guide
.
— W20 (N5245-20099) Front panel port 1 CPLR THRU to A33 port 1 coupler
— W32 (N5245-20097) Front panel port 2 CPLR THRU to A36 port 2 coupler
Installation Note N5245-90109 17
Page 19
-
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Step 9. Assemble the A58 Bridge and A59 Noise Down Converter
Follow the five instructions shown in Figure 3 for this step of the procedure.
New parts are listed in Table 1 on page 10 of this document.
Figure 3 A58 Bridge and A59 Noise Down Converter
18 Installation Note N5245-90109
Page 20
Keysight Extended Power Range and Bias Tees
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Step 10. Assemble the Noise Assembly onto the Bracket
Follow the two instructions shown in Figure 4 for this step of the procedure.
New parts are listed in Table 1 on page 10 of this document.
Figure 4 Bracket to Noise Assembly Positioning
Installation Note N5245-90109 19
Page 21
-
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Step 11.Install the Switch to the Noise Assembly
Follow the three instructions shown in Figure 5 for this step of the procedure.
New parts are listed in Table 1 on page 10 of this document.
Figure 5 A57 Switch Installation
20 Installation Note N5245-90109
Page 22
Keysight Extended Power Range and Bias Tees
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Step 12. Install the Noise Assembly to the Chassis
Follow the two instructions shown in Figure 6 for this step of the procedure.
New parts are listed in Table 1 on page 10 of this document.
Figure 6 Noise Assembly to Chassis Installation
Installation Note N5245-90109 21
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Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Step 13.Assemble the A56 Port 1 Noise Bypass Switch onto the
Bracket
Follow the instruction shown in Figure 7 for this step of the procedure. New
parts are listed in Table 1 on page 10 of this document.
Figure 7 A56 Port 1 Noise Bypass Switch Assembly
22 Installation Note N5245-90109
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Keysight Extended Power Range and Bias Tees
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Step 14.Install the A56 Noise Bypass Switch
Follow the two instructions shown in Figure 8 for this step of the procedure.
New parts are listed in Table 1 on page 10 of this document.
Figure 8 A56 Port 1 Noise Bypass Switch Installation
Installation Note N5245-90109 23
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Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Step 15.Install the Test Set Cables
Follow instructions carefully when making cable connections, especially
wire harness connections. Incorrect connections can destroy components,
resulting in additional customer costs.
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.
PNA Options 400/419/423 Only
Install the following cables in the order listed. To see images showing the
location of these cables, refer to Figure 9 and Figure 10. New parts are listed in
Table 1 on page 10.
— W135 (N5245-20082) A56 port 1 noise bypass switch to A42 port 1 bias tee
— W137 (N5245-20105) A57 port 2 noise bypass switch to A45 port 2 bias
tee
Figure 9 Option 400/419/423 Only: N5245-20082 Cable Installation
24 Installation Note N5245-90109
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Keysight Extended Power Range and Bias Tees
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Figure 10 Option 400/419/423 Only: N5245-20105 Cable Installation
PNA Options 400/419/423/H85 Only
Install the following cables in the order listed. To see images showing the
location of these cables, refer to Figure 11 and Figure 12. New parts are listed
in Table 1 on page 10.
— W124 (N5245-20137) A56 port 1 noise bypass switch to A33 test port 1
coupler
— W125 (N5245-20138) A57 port 2 noise bypass switch to A36 test port 2
coupler
Installation Note N5245-90109 25
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Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Figure 11 Option 400/419/423/H85 Only: N5245-20137 Cable Installation
26 Installation Note N5245-90109
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Keysight Extended Power Range and Bias Tees
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Figure 12 Option 400/419/423/H85 Only: N5245-20138 Cable Installation
PNA Options 400/419/423 and 400/419/423/H85
Install the following cables in the order listed. To see images showing the
location of these cables, refer to Figure 13. New parts are listed in Table 1 on
page 10.
— W140 (N5245-20107) A57 port 2 noise bypass switch to A58 port 2 bridge
arm
— W139 (N5245-20079) A57 port 2 noise bypass switch to A58 port 2 bridge
thru
— W136 (N5245-20080) A57 port 2 noise bypass switch to front-panel Port 2
CPLR THRU
— W134 (N5245-20084) A56 port 1 noise bypass switch to front-panel port 1
CPLR THRU
— W133 (N5245-20083) A56 port 1 noise bypass switch to front-panel port 1
SOURCE OUT
— W132 (N5245-20081) A56 port 1 noise bypass switch to A38 port 1 source
attenuator
— W154 (N5245-20132) A59 noise downconverter to A28 mixer brick
Installation Note N5245-90109 27
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Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
— W153 (N5245-20134) A59 noise downconverter RF Out to A9 noise receiver
board RF In (One end of this cable will connect later to the A9 noise receiver
board.)
— W151 (N5245-20133) A59 noise downconverter LO Out to A9 noise receiver
board LO In (One end of this cable will connect later to the A9 noise receiver
board.)
28 Installation Note N5245-90109
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Keysight Extended Power Range and Bias Tees
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Figure 13 Options 400/419/423/H29 and Options 400/419/423/H29/H85 Cable
Installation
Installation Note N5245-90109 29
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Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Step 16.Install the A9 Noise Receiver Board
1. Place the analyzer top-side up on a flat surface.
2. Follow the four instructions shown in Figure 14 for this step of the
procedure. Make sure the A9 noise receiver board is fully seated in the
motherboard connector. New parts are listed in Table 1 on page 10 of this
document.
Figure 14 A9 Noise Receiver Board (and Cables) Installation
30 Installation Note N5245-90109
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Keysight Extended Power Range and Bias Tees
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Step 17.Replace the Lower Front Panel Overlay
Refer to Figure 15 on page 32 for this step of the procedure. New parts are
listed in Table 1 on page 10.
1. From the back side of the front panel, use a blunt object in the cutouts in
the lower front dress panel to push on the old overlay (item ¬) and
separate it from the front dress panel.
2. From the front side of the front panel, pull off the overlay completely and
discard it.
3. Remove any adhesive remaining on the front panel.
4. Remove the protective backing from the new front panel overlay (item Á).
5. Loosely place the overlay in the recess on the lower front panel.
6. Placing the index finger of both hands at the middle, press the overlay
firmly onto the frame while sliding your fingers in opposite directions
towards an outside edge of the overlay. Repeat on all areas of the overlay.
Installation Note N5245-90109 31
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Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Figure 15 Lower Front Panel Overlay Replacement
32 Installation Note N5245-90109
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Keysight Extended Power Range and Bias Tees
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Step 18.Reinstall the A24 IF Multiplexer Board
For instructions, click the Chapter 7 bookmark "Removing and Replacing the
A24 IF Multiplexer Board" in the PDF Service Guide
1
.
Step 19.Reinstall the A23 Test Set Motherboard
For instructions, click the Chapter 7 bookmark “Removing and Replacing the
1
A23 test set motherboard” in the PDF Service Guide
.
Step 20.Install the New Ribbon Cable on the A23 Test Set
Motherboard
Ribbon cable N5245-60013 was connected earlier to the Noise Down
Converter. Now connect the other end of the ribbon cable to J550 on the Test
Set Motherboard.
1. See “Downloading the Online PNA Service Guide” on page 6.
Installation Note N5245-90109 33
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Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Step 21.Reroute the A44 and A45 Bias Tees Wire Harnesses
Follow the two instructions shown in Figure 16 for this step of the procedure.
The board shown in this photo may look different from the board in your PNA.
Figure 16 Rerouting the A44 and A45 Bias Tees Wire Harnesses
34 Installation Note N5245-90109
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Keysight Extended Power Range and Bias Tees
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Step 22.Reinstall Front Panel Assembly
For instructions on reinstalling the front panel assembly, click the Chapter 7
bookmark “Removing and Replacing the Front Panel Assembly” in the PDF
Service Guide“Downloading the Online PNA Service Guide” on page 6.
Step 23. Position the Cables and Wires to Prevent Pinching
On the top side of the PNA, carefully position the grey flex cables so they can’t
be pinched between the covers and the rails.
On the bottom side of the PNA, carefully fold or push down the ribbon cables
and wires so they can’t be pinched between the hardware and the outer cover.
Ribbon cables and wires must never be positioned on top of hardware.
Step 24.Install the New Inner Cover
If not already done, discard the old inner cover. Install the new inner cover
(part number N5247-00004) included with this upgrade kit. For instructions,
click the Chapter 7 bookmark “Removing the Covers” in the PDF Service
1
Guide
.
Step 25.Reinstall the Outer Cover
For instructions, click the Chapter 7 bookmark “Removing the Covers” in the
1
PDF Service Guide
.
Installation Note N5245-90109 35
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System
Service
Option Enable
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Step 26.Enable Option H29
Procedure Requirements
— The analyzer must be powered up and operating to perform this procedure.
— The Network Analyzer program must be running.
— A keyboard must be connected to the network analyzer.
Option Enable Procedure
NOTE: You must have a keyword to enable this option. If you have not yet
obtained the necessary keyword, refer to “Step 1. Obtain a Keyword” on
page 14 for instructions.
1. To start the option enable utility, press UTILITY , then ,
then . An option enable dialog box will appear.
2. Click the arrow in the Select Desired Option box. A list of available options
will appear.
3. In the Select Desired Option list, click H29 - Full Noise Measurements.
4. Using the keyboard, enter the keyword you obtained, in the box provided.
Enter this keyword exactly as provided.
5. Click Enabl
6. Click Yes in answer to the displayed question in the Restart Analyzer? box.
7. When the installation is complete, click Exit.
Option Verification Procedure
Once the analyzer has restarted and the Network Analyzer program is again
running:
1. On the analyzer’s Help menu, click About Network Analyzer.
2. Verify that “H29” is listed after “Options:” in the display. Click OK.
If Option H29 has not been enabled, perform the "Option Enable
Procedure" again. If the option is still not enabled, contact Keysight
Technologies. Refer to “Getting Assistance from Keysight” on page 4.
36 Installation Note N5245-90109
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Keysight Extended Power Range and Bias Tees
System
Service
Option Enable
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Step 27.Verify Option 028 is Not Installed
Procedure Requirements
— The analyzer must be powered up and operating to perform this procedure.
— The Network Analyzer program must be running.
— A keyboard and mouse must be connected to the network analyzer.
Verify Option 028 is Not Installed
— On the toolbar at the top of the PNA display screen, click Help.
— On the drop-down list, click About Network Analyzer.
— In the About Network Analyzer window, under Options, verify that “028” is
not listed.
— If it is listed, continue with the instructions in this step to remove
Option 028.
— If it is not listed, skip the remainder of this step and go to the next
one.
Option 028 Removal Procedure
1. To start the option enable utility, press UTILITY , then ,
then . An option enable dialog box will appear.
2. Click the arrow in the Select Desired Option box. A list of available options
will appear.
3. In the Select Desired Option list, click 028.
4. Click Remove.
5. Click OK to confirm that you want to remove the license for the selected
option.
6. Click Yes in answer to the displayed question in the Restart Analyzer? box.
Installation Note N5245-90109 37
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Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Step 28.Perform Post-Upgrade Adjustments and Calibration
Adjustments
The following adjustments must be made due to the hardware changes of the
analyzer.
— Default EE adjustment - select the LO Drive-NF adjustment and initialize
the values.
—Source adjustment
— Receiver adjustment
— Noise figure adjustment
These adjustments are described in the PNA Service Guide and in the PNA
on-line HELP. A list of equipment required to perform these adjustments is also
found in the service guide.
To view the Service Guide online, use the following steps:
1. Go to www.keysight.com
2. In the Search box, enter the model number of your analyzer, N5245A, and
click Search.
3. Click Technical Support > Manuals.
4. Click Service Manual.
5. Click the service guide title to load the PDF file.
6. When the PDF of the Service Guide is displayed, scroll through the
Contents section bookmarks to locate the “Tests & Adjustments” chapter.
After the specified adjustments have been performed, the analyzer should
operate and phase lock over its entire frequency range.
Operator’s Check
Perform the Operator’s Check to check the basic functionality of the analyzer.
For instructions, refer to the “Tests & Adjustments” chapter of the Service
Guide.
If you experience difficulty with the basic functioning of the analyzer, contact
Keysight. Refer to “Contacting Keysight” on page 4.
Calibration
Although the analyzer functions, its performance relative to its specifications
has not been verified. It is recommended that a full instrument calibration be
performed using the analyzer’s internal performance test software. Refer to the
analyzer’s service guide for information on this performance test software.
38 Installation Note N5245-90109
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Keysight Extended Power Range and Bias Tees
Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
Step 29. Prepare the PNA for the User
1. If necessary, reinstall front jumper cables.
2. Install the cable guards, pushing them over the front jumper cables until
the cushioning material touches the front panel of the PNA.
3. Install the dust caps on the test ports.
4. Clean the analyzer, as needed, using a damp cloth.
Installation Note N5245-90109 39
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Upgrade Kit Order Numbers: N5244AU-921 and N5245AU-921
40 Installation Note N5245-90109
Page 42
This information is subject to change without notice.
© Keysight Technologies 2011 - 2016
February 2016
*N5245-90109*
N5245-90109
www.keysight.com
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