Keysight N5242-60115 Installation and operation manual

Keysight Add 4-Port Capability
Upgrade Kit

Installation Note
To Upgrade PNA-X N5241A or N5242A Option 200 to Option
400
For Analyzers with Serial Numbers Prefixed MY/SG/US5201
and Above
Upgrade Kit Order Number: N5241AU- 950 and N5242AU- 950
Keysight Kit Number: N5242-60115

Installation Note N5242-90115 1

2 Installation Note N5242-90115
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 N5242-90115 3
Description of the Upgrade
IMPORTANT In June 2013, the N5241A/AS and N5242A/AS analyzers underwent significant hardware changes.
Some components that have 2.4 mm connectors (bias tees, couplers, and some semi-rigid cables) were
replaced with components that have 3.5 mm connectors. 
If your analyzer’s serial number prefix is MY/SG/US5310 and below: 
Your analyzer was originally shipped with 2.4 mm components. The 2.4 mm couplers and connecting
cables in your analyzer must be replaced with the new 3.5 mm items included in this kit.
If your analyzer’s serial number prefix is MY/SG/US5321 and above:
Your analyzer was shipped with 3.5 mm components, so it is not necessary to replace the couplers and
connecting cables. These items are included in this kit, but will not be used for your upgrade. Set them
aside for possible use in the future.
Be very careful to use the appropriate hardware in your analyzer. Using the wrong hardware can ruin
analyzer components, resulting in additional customer costs.
This upgrade converts your N5241A or N5242A Option 200 2-port analyzer to a N5241A or N5242A Option 400 4-
port analyzer by adding:
• an additional 26.5 GHZ source board
• an additional 13.5 GHZ source synthesizer board
• an additional mixer brick
• two additional bridges
• four couplers
•asplitter
• a modified front panel, including 2 new test ports
•manynewcables
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.

4 Installation Note N5242-90115
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.
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 [e-mail], or telephone the
CTD Hotline at [phone] and leave a voice mail message. Please include details of the problem.

Installation Note N5242-90115 5
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 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 6.
• Enough time - refer to “About Installing the Upgrade” on page 7.
• Test equipment for the post-upgrade adjustments. To view the equipment list, click the Chapter 3 bookmark
"Tests and Adjustments" in the PDF Service Guide1.
License Key Redemption
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 receive your
license key via postal mail.
1. See “Downloading the Online PNA Service Guide” on page 6.

6 Installation Note N5242-90115
Downloading the Online PNA Service Guide
To view the online Service Guide for your PNA model number, use the following steps:
1. Go to www.keysight.com.
2. In the Search box, enter the model number of the analyzer (Ex: N5242A) and click Search.
3. Click Technical Support > Manuals.
4. Click Service Manual.
5. Click the service guide title to download the PDF file.
6. When the PDF of the Service Guide is displayed, scroll through the Contents section bookmarks to locate the
information needed.
Protecting Your Workspace from Electrostatic Discharge
For information, click on the Chapter 1 bookmark, “Electrostatic Discharge Protection” in the PDF Service
Guide1.
ESD Equipment Required for the Installation
Tools 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
Description Qty Part Number
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
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

Installation Note N5242-90115 7
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. Torque these connections to 21 in-lb.
About Installing the Upgrade
Products affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .N5241A and N5242A Option 200
Installation to be performed by . . . . . . . . . . . . . . . . . . . . . . . .Keysight service center or personnel qualified by
Keysight
Estimated installation time . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 hours
Estimated adjustment time. . . . . . . . . . . . . . . . . . . . . . . . . . . .1 hour
Estimated full instrument calibration time . . . . . . . . . . . . . . .4.5 hours

8 Installation Note N5242-90115
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 N5242-60115
Ref
Desig. Description Qty Part Number
-- Installation note (this document) 1 N5242-90115
A8 26.5 GHz source (2) board 1 5087-7307
A13 13.5 GHz source 2 synthesizer board 1
N5240-60074
Was N5242-
60150
A22 Splitter 1 5087-7139
A24 Mixer brick (2) 1
5087-7829 
Was 5087-7766,
or 5087-7722
A26 Test port 3 bridge 2 5087-7757
A27 Test port 4 bridge
A29 Test port 1 coupler
4 5087-7813
A30 Test port 3 coupler
A31 Test port 4 coupler
A32 Test port 2 coupler
-- Machine screw, M3.0 x 20, pan head (3 to attach mixer brick 2 to mounting
block; 4 to attach 2 bridges to brackets) 7 0515-1410
-- Machine screw, M3.0 x 8, pan head (2 to attach mixer brick 2 to mounting
block) 4 0515-0372
-- Machine screw, M3.0 x 6, pan head (4 to attach 2 bridges to deck) 4 0515-0430
-- Machine screw, M3.0 x 14, pan head (2 to attach splitter to mixer brick
mounting block 2 0515-2994
--
Machine screw, M4 x 10, pan head (to attach A8 source 2 assy. to A19
motherboard)
2 0515-0380
-- Bulkhead connector assembly for test set front plate 16 1250-3805
-- Front panel overlay (label), 4-port 1 N5242-80003
-- Keypad overlay (label) 1 N5242-80005
-- Power switch overlay (label) 1 N5242-80007
-- Test set front plate, 4-port 1 N5221-00007
-- Gap pad (between each coupler and test set front plate) 4 E4403-20033
-- Vibration mount (between couplers 1 & 3, and 2 & 4) 2 0460-2725
-- Mounting nuts (for ports 3 & 4 test port couplers) 2 5022-1087
-- Short (for Mixer Brick A24) 1 0960-0055
-- Front frame, 1-piece, machined, 4-port 1
N5247-20141
Was N5245-
20128

Installation Note N5242-90115 9
-- Bracket for test port bridge 2 N5242-00006
-- Cable guard 1 N5242-00030
-- Nameplate, N5241A 1 N5241-80001
-- Nameplate, N5242A 1 N5242-80006
-- Dust caps for test ports 4 1401-0214
-- Tie wrap, to secure cables to side of deck 7 1400-0249
W2 A13 13.5 GHz (source 2) synth board J1207 to A8 26.5 GHz source (2) board
P1 1 N5222-20090
W5 A8 source (2) to W6 1 N5222-20062
W6 W5 to A26 port 3 bridge 1 N5222-20041
W7 A8 source (2) to W8 1 N5222-20063
W8 W7 to A27 port 4 bridge 1 N5222-20042
W12 A29 port 1 coupler to front-panel Port 1 CPLR THRU 1 N5222-20045
W14 A29 port 1 coupler to front-panel Port 1 CPLR ARM 1 N5222-20030
W15 A26 port 3 bridge to front-panel Port 3 SOURCE OUT 1 N5222-20047
W16 A30 port 3 coupler to front-panel Port 3 CPLR THRU 1 N5222-20049
W17 A26 port 3 bridge to front-panel REF 3 SOURCE OUT 1 N5222-20023
W18 A30 port 3 coupler to front-panel Port 3 CPLR ARM 1 N5222-20015
W19 A27 port 4 bridge to front-panel Port 4 SOURCE OUT 1 N5222-20050
W20 A31 port 4 coupler to front-panel Port 4 CPLR THRU 1 N5222-20054
W21 A27 port 4 bridge to front-panel REF 4 SOURCE OUT 1 N5222-20025
W22 A31 port 4 coupler to front-panel Port 4 CPLR ARM 1 N5222-20018
W24 A32 port 2 coupler to front-panel Port 2 CPLR THRU 1 N5222-20053
W26 A32 port 2 coupler to front-panel Port 2 CPLR ARM 1 N5222-20034
W30 Front panel jumpers 6 N5222-20091
W32 Port 3 RCVR C IN to A24 mixer brick (C) 1 N5222-20048
W33 Port 4 RCVR D IN to A24 mixer brick (D) 1 N5222-20055
W42 A21 HMA26.5 to A22 splitter 1 N5222-20009
W43 A22 splitter to A23 mixer brick 1 N5222-20007
W44 A22 splitter to A24 mixer brick 1 N5222-20008
W49 REF 3 RCVR R3 IN to A24 mixer brick (R3) 1 N5222-20057
W50 REF 4 RCVR R4 IN to A24 mixer brick (R4) 1 N5222-20058
W52 A23 mixer brick (R1) to A20 IF multiplexer (P411) 1 N5242-60021
W53 A23 mixer brick (R2) to A20 IF multiplexer (P412) 1 N5242-60022
W55 A24 mixer brick (D) to A20 IF multiplexer (P801) 1 N5242-60024
W56 A24 mixer brick (R4) to A20 IF multiplexer (P414) 1 N5242-60019
W57 A24 mixer brick (R3) to A20 IF multiplexer (P413) 1 N5242-60020
Table 1 Contents of Upgrade Kit N5242-60115
Ref
Desig. Description Qty Part Number

10 Installation Note N5242-90115
W58 A24 mixer brick (C) to A20 IF multiplexer (P601) 1 N5242-60023
W67 A10 frequency reference board J7 to A13 13.5 GHz (source 2) synth board
J5 1 N5242-60030
-- Ribbon cable, A19 test set motherboard J213 to A24 mixer brick (2) 1 N5242-60006
Table 1 Contents of Upgrade Kit N5242-60115
Ref
Desig. Description Qty Part Number

Installation Note N5242-90115 11
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 A19 Test Set Motherboard.
Step 6. Remove Some Existing Semirigid Test Set Cables.
Step 7. Remove the A23 Mixer Brick Assembly.
Step 8. Assemble the A24 Mixer Brick and A22 Splitter.
Step 9. Assemble the A26 and A27 Test Port Bridges.
Step 10. Install the Mixer Bricks Assembly and Test Port Bridge Assemblies.
Step 11. Assemble the A29 - A32 Test Port Coupler Assemblies.
Step 12. Install the LED Boards and Test Port Coupler Assemblies to the Test Set Front Plate.
Step 13. Install the Bulkhead Connectors in the Test Set Front Plate.
Step 14. Install the Coupler Plate Assembly to the Deck.
Step 15. Install the Second Source Boards.
Step 16. Install the Semirigid Test Set Cables.
Step 17. Reinstall the A19 Test Set Motherboard.
Step 18. Replace the 2-Port Front Frame with a 4-Port Front Frame.
Step 19. Reinstall the Front Panel Assembly.
Step 20. Install the Front Panel Overlays.
Step 21. Install the Front Panel Jumper Cables.
Step 22. Position the Cables and Wires to Prevent Pinching.
Step 23. Reinstall the Inner Cover.
Step 24. Reinstall the Outer Cover.
Step 25. Enable Option 400.

12 Installation Note N5242-90115
Step 26. Perform Post-Upgrade Adjustments and Calibration.
Step 27. Prepare the PNA for the User.
Step 1. Obtain a Keyword and Verify the Information
Follow the instructions on the Option Entitlement Certificate supplied to obtain a license key for installation of
this upgrade. Refer to “License Key Redemption” on page 5.
Verify that the model number, serial number, and option number information on the license key match those of
the instrument on which this upgrade will be installed.
If the model number, serial number, or option number do not match those on your license key, you will not be
able to install the option. If this is the case, contact Keysight for assistance before beginning the installation of
this upgrade. Refer to “Contacting Keysight” on page 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 A19 Test Set Motherboard
For instructions, click the Chapter 7 bookmark “Removing and Replacing the A19 Test Set Motherboard” in the
PDF Service Guide1.
Step 6. Remove Some Existing Semirigid Test Set Cables
NOTE 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.
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.
1. Place the analyzer bottom-side up on a flat surface.
1. See “Downloading the Online PNA Service Guide” on page 6.

Installation Note N5242-90115 13
2. Remove all bottom-side semirigid cables except for those in the table below. 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. Do not discard the cables because some will be reused later in the
procedure.
3. 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.
Step 7. Remove the A23 Mixer Brick Assembly
Remove the A23 mixer brick assembly from the PNA. For instructions, click the Chapter 7 bookmark, “Removing
and Replacing the A23 and A24 Mixer Bricks” in the PDF Service Guide1.
Step 8. Assemble the A24 Mixer Brick and A22 Splitter
Refer to Figure 1 in this document for this step. New parts are listed in Table 1 on page 8 of this document.
1. Install the A24 mixer brick (5087-7829) to the mounting block by hand-starting three screws (item ①; 0515-
1410). Do not tighten.
2. Install two screws (item ➁; 0515-0372) and torque to 9 in-lbs.
3. Go back and torque the three screws (item ①; 0515-1410) to 9 in-lbs.
Reference
Designator Typea
a. SR = semirigid coaxial cable.
Qty Description
W3 SR 1 A5 source (1) to W4
W9 SR 1 A5 source (1) to W10
W45 SR 1 A5 source (1) to W46
W46 SR 1 W46 to rear-panel EXT TSET DRIVE RF OUT (J6)
W47 SR 1 A23 mixer brick to EXT TSET DRIVE LO OUT (J5)
1. See “Downloading the Online PNA Service Guide” on page 6.

14 Installation Note N5242-90115
Figure 1 A24 Mixer Brick Assembly

Installation Note N5242-90115 15
Refer to Figure 2 in this document for the remainder of this step.
4. Follow the eleven instructions shown in Figure 2. New parts are listed in Table 1 on page 8 of this document.
NOTE Graphics in this document such as Figure 2 use very brief text to instruct where to connect a
cable. For example, text that reads “N5242-60018 IFMUX P201 - BRK1 B” means to connect the
N5242-60018 gray flexible cable at the A20 IF MUX board connector P201 and at A23 Mixer Brick
1 connector B.
Figure 2 A23 and A24 Mixer Brick Assembly
Step 9. Assemble the A26 and A27 Test Port Bridges
Follow the two instructions shown in Figure 3 in this document. New parts are listed in Table 1 on page 8 of this
document.

16 Installation Note N5242-90115
Figure 3 A26 and A27 Test Port Bridge Assembly
Step 10. Install the Mixer Bricks Assembly and Test Port Bridge Assemblies
Follow the two instructions shown in Figure 4 in this document. New parts are listed in Table 1 on page 8 of this
document.

Installation Note N5242-90115 17
Figure 4 A23, A24 Mixer Bricks Installation and A26, A27 Test Port Bridges Installation

18 Installation Note N5242-90115
Step 11. Assemble the A29 - A32 Test Port Coupler Assemblies
1. Remove the A29 test port 1 coupler and A32 test port 2 coupler from the PNA. For instructions, click the
Chapter 7 bookmark, "Removing and Replacing the A29 - A32 Test Port Couplers" in the PDF Service Guide1.
2. If your analyzer’s serial number prefix is MY/SG/US5321 and above: Using pliers, remove the adhesive
bumper on the A29 test port 1 coupler and on the A32 test port 2 coupler.
3. If your analyzer’s serial number prefix is MY/SG/US5310 and below: Discard the test port couplers you
just removed from the PNA. These old couplers have 2.4 mm connectors and must be replaced with the new
couplers (3.5 mm connectors) included in the kit.
4. Follow the two instructions shown in Figure 5. New parts are listed in Table 1 on page 8 of this document.
Figure 5 A29 - A32 Test Port Coupler Assembly
1. See “Downloading the Online PNA Service Guide” on page 6.

Installation Note N5242-90115 19
Step 12. Install the LED Boards and Test Port Coupler Assemblies to the Test Set Front
Plate
1. Remove two screws from each LED board and remove the boards from the 2-port test set front plate of the
PNA.
2. If your analyzer’s serial number is MY/SG/US5321 and above: 
Remove the bulkhead connectors from the 2-port test set front plate of the PNA. They will be installed later
in the 4-port test set front plate.
3. Remove the 2-port test set front plate from the test set deck.
4. Follow the two instructions shown in Figure 6 of this document. New parts are listed in Table 1 on page 8 of
this document.
Figure 6 LED Board Assemblies and Test Port Coupler Assemblies Installation