Keysight Technologies N5224AU-401 Installation and operation manual

Keysight Add Configurable Test
Set Upgrade Kit
Installation Note
To Upgrade PNA N5224A or N5225A Option 400 to
Option 401
Upgrade Kit Order Numbers: N5224AU-401 or
N5225AU-401
Keysight Kit Number: N5225-60105

2 Installation Note N5225-90105
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 note until the indicated conditions are fully understood and met.

Installation Note N5225-90105 3
Description of the Upgrade
This upgrade adds the following items to your N5224A Option 400 or N5225A Option 400 network analyzer:
• reference mixer switch
• front panel jumpers
• front panel jumpers cable guards
• front panel overlay replacement
•newcables
After installation of this upgrade, your analyzer will be an N5224A Option 401 or N5225A Option 401.
Getting Assistance from Keysight
By internet, phone, or fax, 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.
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 N5225-90105
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 6.
• 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 N5225-90105 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: 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
1. See “Downloading the Online PNA Service Guide” on page 5.
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

6 Installation Note N5225-90105
Tools Required for the Installation
CAUTION Use a 5/16-in torque wrench set to 10 in-lbs on all cable connections.
About Installing the Upgrade
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) 1 N/A
Products affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N5224A and N5225A Option 400
Installation to be performed by . . . . . . . . . . . . . . . . . . . . . . Keysight service center or personnel qualified by
Keysight
Estimated installation time . . . . . . . . . . . . . . . . . . . . . . . . . 2 hours
Estimated adjustment time . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 hour
Estimated full instrument calibration time . . . . . . . . . . . . . 4.5 hours

Installation Note N5225-90105 7
Items Included in the Upgrade Kit1
Check the contents of your kit against the following list. If any part is missing or damaged, contact Keysight
Technologies. Refer to “Getting Assistance from Keysight” on page 3.
1. In addition to the upgrade kit, the shipment includes an Option Entitlement Certificate. Refer to “License Key Redemption”
on page 4 for important information about this certificate.
Table 1 Contents of Upgrade Kit N5225-60105
Ref
Desig. Description Qty Part Number
-- Installation note (this document) 1 N5225-90105
A37 Reference mixer switch 1 5087-7759
-- Bracket (for A37 reference mixer switch) 1 N5245-00024
-- Machine screw, M3 x 8, pan head (2 to attach bracket to reference mixer switch; 2
to attach reference mixer switch assembly to deck) 5 0515-0372
-- Cable clamp 8 1400-1334
-- Cable guard 1 N5242-00030
-- Cable guard 2 N5242-00029
-- Front panel overlay 1 N5227-80005
W19 RF cable, A29 port 1 receiver coupler to front-panel Port 1 SOURCE OUT 1 N5245-20039
W20 RF cable, port 1 CPLR THRU to A33 port 1 coupler 1 N5245-20099
W21 RF cable, A29 port 1 receiver coupler to A37 reference mixer switch 1 N5245-20110
W22 RF cable, A33 port 1 coupler to front-panel Port 1 CPLR ARM 1 N5245-20014
W23 RF cable, A30 port 3 receiver coupler to front-panel Port 3 SOURCE OUT 1 N5245-20051
W24 RF cable, port 3 CPLR THRU to A34 port 3 coupler 1 N5245-20098
W25 RF cable, A30 port 3 receiver coupler to front-panel REF 3 SOURCE OUT 1 N5245-20016
W26 RF cable, A34 port 3 coupler to front-panel Port 3 CPLR ARM 1 N5245-20015
W27 RF cable, A31 port 4 receiver coupler to front-panel Port 4 SOURCE OUT 1 N5245-20052
W28 RF cable, port 4 CPLR THRU to A35 port 4 coupler 1 N5245-20096
W29 RF cable, A31 port 4 receiver coupler to front-panel REF 4 SOURCE OUT 1 N5245-20017
W30 RF cable, A35 port 4 coupler to front-panel port 4 CPLR ARM 1 N5245-20018
W31 RF cable, A32 port 2 receiver coupler to front-panel port 2 SOURCE OUT 1 N5245-20040
W32 RF cable, port 2 CPLR THRU to A36 port 2 coupler 1 N5245-20097
W33 RF cable, A32 port 2 receiver coupler to front-panel REF 2 SOURCE OUT 1 N5245-20108
W34 RF cable, A36 port 2 coupler to front-panel port 2 CPLR ARM 1 N5245-20019
W36 RF cable, Front panel jumper 12 N5245-20155
W37 RF cable, port 1 RCVR A IN to A27 mixer brick (A) 1 N5245-20041

8 Installation Note N5225-90105
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.
W38 RF cable, port 3 RCVR C IN to A28 mixer brick (C) 1 N5245-20037
W39 RF cable, port 4 RCVR D IN to A28 mixer brick (D) 1 N5245-20038
W40 RF cable, port 2 RCVR B IN to A27 mixer brick (B) 1 N5245-20042
W41 RF cable, A37 reference mixer switch to
front-panel REF 1 SOURCE OUT 1 N5245-20006
W42 RF cable, REF 1 RCVR R1 IN to A37 reference mixer switch 1 N5245-20007
W43 RF cable, A37 reference mixer switch to A27 mixer brick (R1) 1 N5245-20009
W44 RF cable, REF 3 RCVR R3 IN to A28 mixer brick (R3) 1 N5245-20020
W45 RF cable, REF 4 RCVR R4 IN to 3 dB pad on A28 mixer brick (R4) 1 N5245-20021
W46 RF cable, REF 2 RCVR R2 IN to A27 mixer brick (R2) 1 N5245-20011
-- Ribbon cable, A23 test set motherboard J554 to A37 reference mixer switch 1 8121-0966
Table 1 Contents of Upgrade Kit N5225-60105
Ref
Desig. Description Qty Part Number

Installation Note N5225-90105 9
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 Front Panel Assembly.
Step 4. Remove Some Existing Cables.
Step 5. Remove a 3 dB Pad.
Step 6. Assemble the A37 Reference Mixer Switch Assembly.
Step 7. Install the A37 Reference Mixer Switch Assembly.
Step 8. Install the New Cables.
Step 9. Remove the Old Lower Front Panel Overlay.
Step 10. Reinstall Front Panel Assembly.
Step 11. Install the New Lower Front Panel Overlay.
Step 12. Install Front Panel Jumpers.
Step 13. Position the Cables and Wires to Prevent Pinching.
Step 14. Reinstall the Outer Cover.
Step 15. Enable Option 401.
Step 16. Perform Post-Upgrade Adjustments and Calibration.
Step 17. Prepare the PNA for the User.

10 Installation Note N5225-90105
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 Front Panel Assembly
For instructions, click the Chapter 7 bookmark “Removing and Replacing the Front Panel Assembly” in the PDF
Service Guide1.
1. See “Downloading the Online PNA Service Guide” on page 5.

Installation Note N5225-90105 11
Step 4. Remove Some Existing Cables
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.
2. Remove the following cables. To see an image showing the location of these cables, click the Chapter 6
bookmark “Bottom RF Cables, Standard 4-Port Configuration, Option 400” in the PDF Service Guide1.
These cables may be discarded - they will not be reinstalled.
• W107 (N5224-20005) A29 port 1 receiver coupler to A27 mixer brick (R1)/3-dB pad
• W108 (N5224-20024) A30 port 3 receiver coupler to A28 mixer brick (R3)
• W109 (N5224-20027) A31 port 4 receiver coupler to A28 mixer brick (R4)/3-dB pad
• W110 (N5224-20028) A32 port 2 receiver coupler to A27 mixer brick (R2)
• W111 (N5224-20013) A29 port 1 receiver coupler to A33 port 1 coupler
• W112 (N5224-20015) A30 port 3 receiver coupler to A34 port 3 coupler
• W113 (N5224-20016) A31 port 4 receiver coupler to A35 port 4 coupler
• W114 (N5224-20014) A32 port 2 receiver coupler to A36 port 2 coupler
• W115 (N5224-20022) A33 port 1 coupler to A27 mixer brick (A)
• W116 (N5224-20023) A34 port 3 coupler to A28 mixer brick (C)
• W117 (N5224-20026) A35 port 4 coupler to A28 mixer brick (D)
• W118 (N5224-20025) A36 port 2 coupler to A27 mixer brick (B)
These cables must be saved - they will be reinstalled.
• W12 (N5245-20109) A29 port 1 receiver coupler to W11
• W14 (N5245-20043) A30 port 3 receiver coupler to W13
• W16 (N5245-20044) A31 port 4 receiver coupler to W15
• W18 (N5245-20111) A32 port 2 receiver coupler to W17
Step 5. Remove a 3 dB Pad
Remove and discard the 3 dB pad connected to A27 mixer brick port R1.
1. See “Downloading the Online PNA Service Guide” on page 5.

12 Installation Note N5225-90105
Step 6. Assemble the A37 Reference Mixer Switch Assembly
Mount the bracket (N5245-00024) to the reference mixer switch (5087-7759) using two screws (0515-0372).
Use a T-10 TORX driver to tighten the screws. New parts are listed in Table 1 on page 7.
Step 7. Install the A37 Reference Mixer Switch Assembly
Refer to Figure 1 for this step of the procedure. New parts are listed in Table 1 on page 7. Use a T-10 TORX
driver to tighten all screws.
Figure 1 Reference Mixer Switch Assembly

Installation Note N5225-90105 13
Step 8. Install the New Cables
CAUTION Follow instructions carefully when making cable connections, especially wire harness
connections. Incorrect connections can destroy components, resulting in additional customer
costs.
Install the Semirigid Cables
To see an image showing the location of these cables, click the Chapter 6 bookmarks “Bottom RF Cables, 4-
Port Configuration, Option 401” in the PDF Service Guide1. New parts are listed in Table 1 on page 7.
Install the following new cables in the order listed.
• W40 (N5245-20042) Port 2 RCVR B IN to A27 mixer brick (B)
* As shown in Figure 2 on page 14, install one cable clamp (part number 1400-1334) to secure W40 (part
number N5245-20042).
1. See “Downloading the Online PNA Service Guide” on page 5.

14 Installation Note N5225-90105
Figure 2 Location of Cable Clamp to Secure W40
• W34 (N5245-20019) A36 port 2 coupler to front-panel port 2 CPLR ARM
• W31 (N5245-20040) A32 port 2 receiver coupler to front-panel port 2 SOURCE OUT
• W32 (N5245-20097) Port 2 CPLR THRU to A36 port 2 coupler
• W28 (N5245-20096) Port 4 CPLR THRU to A35 port 4 coupler
• W33 (N5245-20108) A32 port 2 receiver coupler to front-panel REF 2 SOURCE OUT
* As shown in Figure 3 on page 15, install three cable clamps (part number 1400-1334) to secure W40 (part
number N5245-20108).

Installation Note N5225-90105 15
Figure 3 Location of Cable Clamps to Secure W33
• W46 (N5245-20011) REF 2 RCVR R2 IN to A27 mixer brick (R2)
• W39 (N5245-20038) Port 4 RCVR D IN to A28 mixer brick (D)
• W45 (N5245-20021) REF 4 RCVR R4 IN to 3 dB pad on A28 mixer brick (R4)
• W30 (N5245-20018) A35 port 4 coupler to front-panel port 4 CPLR ARM
• W27 (N5245-20052) A31 port 4 receiver coupler to front-panel Port 4 SOURCE OUT

16 Installation Note N5225-90105
• W29 (N5245-20017) A31 port 4 receiver coupler to front-panel REF 4 SOURCE OUT
• W18 (reuse) (N5245-20111) A32 port 2 receiver coupler to W17
• W38 (N5245-20037) Port 3 RCVR C IN to A28 mixer brick (C)
• W44 (N5245-20020) REF 3 RCVR R3 IN to A28 mixer brick (R3)
• W12 (reuse) (N5245-20109) A29 port 1 receiver coupler to W11
• W20 (N5245-20099) Port 1 CPLR THRU to A33 port 1 coupler
• W24 (N5245-20098) Port 3 CPLR THRU to A34 port 3 coupler
• W26 (N5245-20015) A34 port 3 coupler to front-panel Port 3 CPLR ARM
• W23 (N5245-20051) A30 port 3 receiver coupler to front-panel Port 3 SOURCE OUT
• W25 (N5245-20016) A30 port 3 receiver coupler to front-panel REF 3 SOURCE OUT
• W37 (N5245-20041) Port 1 RCVR A IN to A27 mixer brick (A)
• W22 (N5245-20014) A33 port 1 coupler to front-panel Port 1 CPLR ARM
• W19 (N5245-20039) A29 port 1 receiver coupler to front-panel Port 1 SOURCE OUT
• W42 (N5245-20007) REF 1 RCVR R1 IN to A37 reference mixer switch
• W41 (N5245-20006) A37 reference mixer switch to
front-panel REF 1 SOURCE OUT
• W43 (N5245-20009) A37 reference mixer switch to A27 mixer brick (R1)
• W21 (N5245-20110) A29 port 1 receiver coupler to A37 reference mixer switch
* Figure 1 on page 12 shows two screws that attach the reference mixer switch to the test set deck. At this
time, torque these two screws to 9 in-lbs.
• W14 (reuse) (N5245-20043)A30 port 3 receiver coupler to W13
• W16 (reuse) (N5245-20044)A31 port 4 receiver coupler to W15
Install the Ribbon Cable
To see an image showing the location of this cable, click the Chapter 6 bookmarks “Bottom Ribbon Cables and
Wire Harnesses, 4-Port, Option 401” in the PDF Service Guide1. New parts are listed in Table 1 on page 7.
If not already done, connect the reference mixer switch ribbon cable (8121-0966) as follows:
• A23 test set motherboard J554 to A37 reference mixer switch
1. See “Downloading the Online PNA Service Guide” on page 5.

Installation Note N5225-90105 17
Step 9. Remove the Old Lower Front Panel Overlay
Refer to Figure 4 for this step of the procedure. Although this figure shows a 4-port PNA, the concept is the
same for a 2-port PNA. New parts are listed in Table 1 on page 7.
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 ①) 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.
Figure 4 Lower Front Panel Overlay Replacement

18 Installation Note N5225-90105
Step 10. 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 Guide1.
Step 11. Install the New Lower Front Panel Overlay
Refer to Figure 4 on page 17 for this step of the procedure. New parts are listed in Table 1 on page 7.
1. Remove the protective backing from the new front panel overlay, N5227-80005 (item ➁).
2. Starting from either side, loosely place the overlay in the recess on the lower front panel, ensuring that it
fits tightly against the edges of the recess.
3. Once the overlay is in place, press it firmly onto the frame to secure it.
Step 12. Install Front Panel Jumpers
As shown in Figure 5, install 12 front panel jumper cables (part number N5245-20155).
Figure 5 Front Panel Jumper Cables Installation
1. See “Downloading the Online PNA Service Guide” on page 5.

Installation Note N5225-90105 19
Step 13. 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 14. Reinstall the Outer Cover
For instructions, click the Chapter 7 bookmark “Removing the Covers” in the PDF Service Guide1.
Step 15. Enable Option 401
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
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 401 - Configurable Test Set.
4. Using the keyboard, enter the license key in the box provided. The license key is printed on the the license
message you received from Keysight. Enter this key exactly as it is printed on the message.
5. Click Enable.
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 “401” is listed after “Options:” in the display. Click OK.
NOTE If Option 401 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 3.
System
Service
Option Enable