Keysight N5225-60110 Installation and operation manual

Keysight Add 4-Port Capability
Upgrade Kit
Installation Note
To Upgrade PNA N5224A or N5225A Option 200 to
Option 400
Upgrade Kit Order Numbers: N5224AU- 600 and
N5225AU- 600
Keysight Kit Number: N5225-60110

2 Installation Note N5225-90120
WARRANTY STATEMENT
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.
DFARS/Restricted Rights Notice
If software is for use in the performance of a U.S. Government prime contract or subcontract, Software is
delivered and licensed as “Commercial computer software” as defined in DFAR 252.227-7014 (June 1995), or as
a “commercial item” as defined in FAR 2.101(a) or as “Restricted computer software” as defined in FAR 52.227-
19 (June 1987) or any equivalent agency regulation or contract clause. Use, duplication or disclosure of
Software is subject to Keysight Technologies’ standard commercial license terms, and non-DOD Departments
and Agencies of the U.S. Government will receive no greater than Restricted Rights as defined in FAR 52.227-
19(c)(1-2) (June 1987). U.S. Government users will receive no greater than Limited Rights as defined in FAR
52.227-14 (June 1987) or DFAR 252.227-7015 (b)(2) (November 1995), 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.
WARNING Warning denotes a hazard. It calls attention to a procedure which, if not correctly performed
or adhered to, could result in injury or loss of life. Do not proceed beyond a warning note until
the indicated conditions are fully understood and met.
CAUTION Caution denotes a hazard. It calls attention to a procedure that, if not correctly performed or
adhered to, could result in damage to or destruction of the instrument. Do not proceed beyond a
caution sign until the indicated conditions are fully understood and met.

Installation Note N5225-90120 3
Description of the Upgrade
This upgrade converts your N5224A or N5225A Option 200 2-port analyzer to a N5224A or N5225A 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
•asplitter
• a modified front panel
• new cables
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.
NOTE 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.

4 Installation Note N5225-90120
Getting Prepared
CAUTION 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” below.
• A PDF copy or a paper copy of the PNA Service Guide - refer to “Downloading the Online PNA Service
Guide” below.
• An ESD-safe work area - refer to “Protecting Your Workspace from Electrostatic Discharge” below.
• Correct tools - refer to “Tools Required for the Installation” on page 5.
• Enough time - refer to “About Installing the Upgrade” on page 6.
• 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.
License Key Redemption
NOTE 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.
1. See “Downloading the Online PNA Service Guide” on page 5.

Installation Note N5225-90120 5
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: N5225A) 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
Tools Required for the Installation
CAUTION 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.
Description Keysight Part Number
ESD grounding wrist strap 9300-1367
5-ft grounding cord for wrist strap 9300-0980
2 x 4 ft conductive table mat and 15-ft grounding wire 9300-0797
ESD heel strap (for use with conductive floors) 9300-1308
Description Qty Part Number
T-6 TORX driver - set to 4 in-lbs (0.45 N.m) 1N/A
T-10 TORX driver - set to 9 in-lbs (1.02 N.m) 1N/A
T-20 TORX driver - set to 21 in-lbs (2.38 N.m) 1N/A
5/16-in (8 mm) nutsetter or open end torque wrench - set to 10 in-lbs (1.13 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) 1N/A

6 Installation Note N5225-90120
About Installing the Upgrade
Products affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .N5224A and N5225A 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

Installation Note N5225-90120 7
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
Te c h n o l o g i e s . R e f e r t o “Getting Assistance from Keysight” on page 3.
Table 1 Contents of Upgrade Kit N5225-60110
Ref
Desig. Description Qty Part Number
-Installation note (this document) 1N5225-90120
A10 26.5 GHz source (2) board 15087-7342
A12 40 GHz doubler assembly port 3 25087-7349
A13 40 GHz doubler assembly port 4
A17 13.5 GHz (source 2) synthesizer board 1N5240-60074
Was N5242-60150
A26 Splitter 15067-4086
A28 Mixer brick (2) 15087-7323
A30 Test port 3 reference coupler 25087-7760
A31 Test port 4 reference coupler
A34 Test port 3 coupler 25087-7793
A35 Test port 4 coupler
A69 3 dB pad, attached to R4 connector on A28 mixer brick 108490-60039
-Front frame, 4-port 1N5247-20141
-Machine screw, M2.0 x 6, flat head (8 to attach two reference couplers to brackets) 10 0515-1602
-Machine screw, M2.5 x 20, pan head (4 to attach A34 and A35 reference coupler
assemblies to test set deck) 50515-0374
-
Machine screw, M4.0 x 10, pan head (2 each to attach the following boards to the
analyzer chassis: A17 13.5 GHz synthesizer board, A10 26.5 GHz source board, A12
40 GHz doubler assembly port 3, and A13 40 GHz doubler assembly port 4.)
10 0515-0380
-Machine screw, M3.0 x 6, flat head (to attach front frame to coupler plate) 30515-1946
-Machine screw, M3.0 x 12, pan head (1 to attach cable bracket to test set deck. 20515-0664
-Machine screw, M3.0 x 8, pan head (3 to attach shield to A28 mixer brick) 40515-0372
-Machine screw, M2.5 x 16, pan head (2 to attach splitter to mixer brick) 30515-2007
-Machine screw, M3.0 x 25, pan head (3 to attach A28 mixer brick to block) 40515-0667
-Machine screw, M3.0 x 20, flat head (2 to attach bracket to A10 26.5 GHz source) 30515-2078
-Machine screw, M3.0 x 18, pan head (1 to attach bracket to A10 26.5 GHz source) 20515-0666
-Front panel overlay (label), 4-port 1N5227-80004
-Keypad overlay (label) 1N5242-80005
-Power button overlay (label) 1N5242-80007
-Nameplate, N5224A 1N5224-80001
-Nameplate, N5225A 1N5225-80001
-Test set front plate, 4-port 1N5224-00005
-Gap pad (between mixer brick A28 and shield) 4N5245-20125

8 Installation Note N5225-90120
-Gap pad (between each test coupler and the test set front plate) 4E4403-20033
-Shield, mixer brick 1N5245-00023
-2.4 mm dust cap for A28 mixer brick 1N5247-20138
-50 ohm load, attached to A13 40 GHz doubler 11810-0118
-Vibration mount (between couplers 1 & 3 and 2 & 4) 20460-2725
-Mounting nuts (for port 3 & 4 test port couplers) 25022-1087
-Cable clamp 21 1400-1334
-Bracket for reference coupler 2N5245-00017
-Bracket for cables 1N5245-00022
-Bracket for A10 26.5 GHz source (2) board 1N5247-20136
W2 RF cable, A10 source (2) P1 to A17 13.5 GHz source (2) synthesizer J1207 
(4-port) 1N5245-20100
W7 RF cable, A10 source (2) P5 to A12 port 3 doubler 1N5245-20034
W8 RF cable, A10 source (2) P3 to A13 port 4 doubler 1N5245-20035
W9 RF cable, A10 source (2) P4 to A12 port 3 doubler 1N5245-20032
W10 RF cable, A12 port 3 doubler to A13 port 4 doubler 1N5245-20033
W13 RF cable, A12 port 3 doubler to W14 1N5245-20036
W14 RF cable, A30 port 3 receiver coupler to W13 1N5245-20043
W15 RF cable, A13 port 4 doubler to W16 1N5245-20036
W16 RF cable, A31 port 4 receiver coupler to W15 1N5245-20044
W52 RF cable, A25 HMA26.5 to A26 splitter 1N5245-20013
W53 RF cable, A26 splitter to A27 mixer brick 1N5245-20023
W54 RF cable, A26 splitter to A28 mixer brick 1N5245-20022
W62 RF cable, A27 mixer brick (R1) to A24 IF multiplexer (P411) 1N5242-60021
W63 RF cable, A27 mixer brick (R2) to A24 IF multiplexer (P412) 1N5242-60022
W65 RF cable, A28 mixer brick (D) to A24 IF multiplexer (P801) 1N5242-60024
W66 RF cable, A28 mixer brick (R4) to A24 IF multiplexer (P414) 1N5242-60019
W67 RF cable, A28 mixer brick (R3) to A24 IF multiplexer (P413) 1N5242-60020
W68 RF cable, A28 mixer brick (C) to A24 IF multiplexer (P601) 1N5242-60023
W70 RF cable, A24 IF multiplexer board P203 to A16 SPAM board J2 1N5242-60013
W72 RF cable, A24 IF multiplexer board P603 to A16 SPAM board J5 1N5242-60015
W77 RF cable, A14 frequency reference board J7 to A17 13.5 GHz (source 2) synthesizer
board J5 (Located on bottom of board.) 1N5242-60030
W108 RF cable, A30 port 3 receiver coupler to A28 mixer brick (R3) 1N5224-20024
W109 RF cable, A31 port 4 receiver coupler to A28 mixer brick (R4)/3-dB pad 1N5224-20027
W110 RF cable, A32 port 2 receiver coupler to A27 mixer brick (R2) 1N5224-20028
W111 RF cable, A29 port 1 receiver coupler to A33 port 1 coupler 1N5224-20013
Table 1 Contents of Upgrade Kit N5225-60110
Ref
Desig. Description Qty Part Number

Installation Note N5225-90120 9
NOTE 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.
W112 RF cable, A30 port 3 receiver coupler to A34 port 3 coupler 1N5224-20015
W113 RF cable, A31 port 4 receiver coupler to A35 port 4 coupler 1N5224-20016
W114 RF cable, A32 port 2 receiver coupler to A36 port 2 coupler 1N5224-20014
W115 RF cable, A33 port 1 coupler to A27 mixer brick (A) 1N5224-20022
W116 RF cable, A34 port 3 coupler to A28 mixer brick (C) 1N5224-20023
W117 RF cable, A35 port 4 coupler to A28 mixer brick (D) 1N5224-20026
W118 RF cable, A36 port 2 coupler to A27 mixer brick (B) 1N5224-20025
-Ribbon cable, A23 test set motherboard J552 to A28 mixer brick (2) J52 1N5247-60015
Table 1 Contents of Upgrade Kit N5225-60110
Ref
Desig. Description Qty Part Number

10 Installation Note N5225-90120
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.
WARNING 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.
Overview of the Installation Procedure
Step 1. Obtain a Keyword and Verify the Information.
Step 2. Remove the Outer Cover.
Step 3. Remove the Inner Cover.
Step 4. Remove the Front Panel Assembly.
Step 5. Remove the A23 Test Set Motherboard.
Step 6. Remove Some Bottom-Side (Test Set) Cables.
Step 7. Remove the A27 Mixer Brick Assembly.
Step 8. Assemble the A28 Mixer Brick Assembly.
Step 9. Install the A27/A28 Mixer Brick Assemblies.
Step 10. Assemble the A34 and A35 Reference Coupler Assemblies.
Step 11. Install the A34 and A35 Reference Coupler Assemblies.
Step 12. Assemble the A33 - A36 Test Port Coupler Assemblies.
Step 13. Install the LED Boards, Bulkhead Connectors, and Test Port Coupler Assemblies to the 4-Port Test Set
Front Plate.
Step 14. Install the 4-Port Coupler Plate Assembly to the Deck.
Step 15. Assemble and Install the A12 and A13 40 GHz Doubler Assemblies.
Step 16. Install Bracket to A10 Source Assembly.
Step 17. Assemble the A10 26.5 GHz Source 2 Assembly.
Step 18. Install the A10 26.5 GHz Source 2 Assembly and Cables.
Step 19. Install the A17 13.5 GHz (Source 2) Synthesizer Board and Cables.
Step 20. Install the Cable Bracket Mount.
Step 21. Install the Test Set Cables.
Step 22. Reinstall the A23 Test Set Motherboard.
Step 23. Install Cable on the A23 Test Set Motherboard.
Step 24. Replace the Front Frame in the Front Panel Assembly.

Installation Note N5225-90120 11
Step 25. Reinstall Front Panel Assembly.
Step 26. Install the Overlays & Nameplate.
Step 27. Position the Cables and Wires to Prevent Pinching.
Step 28. Reinstall the Inner Cover.
Step 29. Reinstall the Outer Cover.
Step 30. Enable Options P04 and 400.
Step 31. Perform Post-Upgrade Adjustments and Calibration.
Step 32. 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 4.
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 3.
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.
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 Bottom-Side (Test Set) Cables
1. See “Downloading the Online PNA Service Guide” on page 5.

12 Installation Note N5225-90120
CAUTION 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.
NOTE 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.
1. Place the analyzer bottom-side up on a flat surface.
2. Remove the following cables. To see an image showing the location of these cables, click the Chapter 6
bookmark “Bottom RF Cables, Standard 2-Port Configuration, Option 200” in the PDF Service Guide1.
These cables may be discarded - they will not be reinstalled.
• W62 (N5242-60025) A27 mixer brick (R1) to A24 IF multiplexer (P601)
• W63 (N5242-60026) A27 mixer brick (R2) to A24 IF multiplexer (P801)
• W70 (N5247-60024) A24 IF multiplexer board P203 to A16 SPAM board J5
• W72 (N5247-60023) A24 IF multiplexer board P603 to A16 SPAM board J2
• W80 (N5245-20048) A25 HMA26.5 to A27 mixer brick
• W110 (N5224-20006) A32 port 2 receiver coupler to A27 mixer brick (R2)
• W111 (N5224-60012) A29 port 1 receiver coupler to A33 port 1 coupler
• W114 (N5224-20011) A32 port 2 receiver coupler to A36 port 2 coupler
• W115 (N5224-20010) A33 port 1 coupler to A27 mixer brick (A)
• W118 (N5224-20009) A36 port 2 coupler to A27 mixer brick (B)
These cables must be saved - they will be reinstalled.
• W12 (N5245-20109) A29 port 1 reference coupler to W11
• W18 (N5245-20111) A32 port 2 reference coupler to W17
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 instructions shown in Figure 1. New parts are listed in Table 1 on page 7 of this document.
1. See “Downloading the Online PNA Service Guide” on page 5.

Installation Note N5225-90120 13
Figure 1A28MixerBrickAssembly

14 Installation Note N5225-90120
2. Follow the two instructions shown in Figure 2.
Figure 2 A28 Mixer Brick Shield Installation

Installation Note N5225-90120 15
3. Follow the two instructions shown in Figure 3.
Figure 3 A69 3 dB Pad and A26 Splitter Installation

16 Installation Note N5225-90120
4. Connect the gray flexible cables to the A28 mixer in the order shown in Figure 4. The other ends of the
cables will be connected when the IF board is reinstalled later.
Figure 4 A28 Mixer Brick Cable Installation
Step 9. Install the A27/A28 Mixer Brick Assemblies
Reinstall the A27 mixer brick cables, and then install the A27/A28 mixer brick assembly, reusing the four
existing screws. For instructions, click the Chapter 7 bookmark, “Removing and Replacing the A27 and A28
Mixer Bricks” in the PDF Service Guide1. New parts are listed in Table 1 on page 7 of this document.
1. See “Downloading the Online PNA Service Guide” on page 5.

Installation Note N5225-90120 17
Step 10. Assemble the A34 and A35 Reference Coupler Assemblies
Follow the instructions shown in Figure 5 and Figure 6. New parts are listed in Table 1 on page 7 of this
document.
Figure 5 A34 Reference Coupler Port 3 Assembly

18 Installation Note N5225-90120
Figure 6 A35 Reference Coupler Port 4 Assembly

Installation Note N5225-90120 19
Step 11. Install the A34 and A35 Reference Coupler Assemblies
Follow the instructions shown in Figure 7. New parts are listed in Table 1 on page 7 of this document.
Figure 7 A34 and A35 Reference Coupler Assemblies Installation