Keysight N5224AU-217 Installation and operation manual

Keysight Add Source and
Receiver Attenuators Upgrade
Kit
Installation Note
To Upgrade PNA N5224A or N5225A Option 201 to
Option 217
Upgrade Kit Order Numbers: N5224AU-217 or
N5225AU-217
Keysight Kit Number: N5225-60103

2 Installation Note N5225-90103
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 N5225-90103 3
Description of the Upgrade
This upgrade adds the following items to your N5224A Option 201 or N5225A Option 201 network analyzer:
• a 60-dB source attenuator in each source port channel
• a 35-dB receiver attenuator in each receiver channel
• front panel overlay replacement
•newcables
After installation of this upgrade, your analyzer will be an N5224A Option 217 or N5225A Option 217.
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 N5225-90103
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 N5225-90103 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 N5225-90103
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 201
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 N5225-90103 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 N5225-60103
Ref
Desig. Description Qty Part Number
-- Installation note (this document) 1 N5225-90103
A38,
A41 0–60 dB source step attenuator 2 33325-60016
A46,
A49 0-35 dB receiver step attenuator 2 33325-60017
-- Attenuator bracket (For source attenuators.) 2 N5245-00015
-- Attenuator bracket (For receiver attenuators.) 2 N5225-00001
-- Cable clamp 8 1400-1334
-- Cable tie 5 1400-0249
-- Front panel overlay 1 N5225-80002
-- Machine screw, M3 x 8, pan head (to attach brackets to attenuators; to attach
receiver attenuators to deck) 17 0515-0372
-- Machine screw, M3 x 6, pan head (to attach source attenuators to deck) 4 0515-0430
W12 A29 port 1 receiver coupler to W11 1 N5245-20050
W18 A32 port 2 receiver coupler to W17 1 N5245-20049
W21 A29 port 1 receiver coupler to A37 reference mixer switch 1 N5245-20118
W33 RF cable, A32 port 2 receiver coupler to front-panel REF 2 SOURCE OUT 1 N5245-20010
W47 REF 2 RCVR R2 IN to A27 mixer brick (R2) 1 N5245-20119
W81 RF cable, A29 test port 1 receiver coupler to A38 test port 1 source attenuator 1 N5245-20029
W82 RF cable, A38 test port 1 source attenuator to front-panel Port 1 SOURCE OUT 1 N5245-20077
W93 RF cable, A32 test port 2 receiver coupler to A41 test port 2 source attenuator 1 N5245-20029
W94 RF cable, A41 test port 2 source attenuator to front-panel Port 2 SOURCE OUT 1 N5245-20031
W97 RF cable, front-panel Port 1 RCVR A IN to A46 port 1 receiver attenuator 1 N5245-20054
W98 RF cable, A46 port 1 receiver attenuator to A27 mixer brick (A) 1 N5245-20056
W103 RF cable, Port 2 RCVR B IN to A49 port 2 receiver attenuator 1 N5245-20055
W104 RF cable, A49 port 2 receiver attenuator to A27 mixer brick (B) 1 N5245-20057
-- Ribbon cable, A23 test set motherboard J205 to A46 port 1 receiver attenuator
2N5245-60026
Was 8121-0982
-- Ribbon cable, A23 test set motherboard J208 to A49 port 2 receiver attenuator

8 Installation Note N5225-90103
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.
-- Ribbon cable, A23 test set motherboard J549 to A38 test port 1 source attenuator
2 N5245-60006
-- Ribbon cable, A23 test set motherboard J546 to A41 test port 2 source attenuator
Table 1 Contents of Upgrade Kit N5225-60103
Ref
Desig. Description Qty Part Number

Installation Note N5225-90103 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 Some Bottom-Side (Test Set) Cables.
Step 4. Assemble the A46 and A49 Receiver Attenuator Assemblies.
Step 5. Install the A46 and A49 Receiver Attenuator Assemblies.
Step 6. Assemble the A38 and A41 Source Attenuator Assemblies.
Step 7. Install the A38 and A41 Source Attenuator Assemblies.
Step 8. Install Some Bottom-Side (Test Set) 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. Reinstall Front Panel Jumpers.
Step 13. Position the Cables and Wires to Prevent Pinching.
Step 14. Reinstall the Outer Cover.
Step 15. Enable Option 217.
Step 16. Perform Post-Upgrade Adjustments and Calibration.
Step 17. Prepare the PNA for the User.

10 Installation Note N5225-90103
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.
1. See “Downloading the Online PNA Service Guide” on page 5.

Installation Note N5225-90103 11
Step 3. Remove Some Bottom-Side (Test Set) 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 2-Port Configuration, Option 201” in the PDF Service Guide1.
These cables may be discarded - they will not be reinstalled.
• W12 (N5245-20109) A29 port 1 receiver coupler to W11
• W18 (N5245-20111) A32 port 2 receiver coupler to W17
• W19 (N5245-20039) A29 test port 1 receiver coupler to front-panel Port 1 SOURCE OUT
• W21 (N5245-20120) A29 port 1 receiver coupler to A37 reference mixer switch
• W31 (N5245-20040) A32 test port 2 receiver coupler to front-panel Port 2 SOURCE OUT
• W35 (N5245-20121) A32 port 2 receiver coupler to front-panel REF 2 SOURCE OUT
• W37 (N5245-20041) Front-panel Port 1 RCVR A IN to A27 mixer brick (A)
• W40 (N5245-20042) Port 2 RCVR B IN to A27 mixer brick (B)
• W46 (N5245-20011) Front-panel REF 2 RCVR R2 IN to A27 mixer brick (R2)
These cables must be saved - they will be reinstalled.
• W41 (N5245-20006) A37 reference mixer switch to
front-panel REF 1 SOURCE OUT
• W42 (N5245-20007) REF 1 RCVR R1 IN to A37 reference mixer switch
• W36 (N5245-20155) Front panel jumpers (quantity = 6)
NOTE: Remove and save the cable guards for the front panel jumpers.
1. See “Downloading the Online PNA Service Guide” on page 5.

12 Installation Note N5225-90103
Step 4. Assemble the A46 and A49 Receiver Attenuator Assemblies
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 Port 1 and Port 2 Receiver Attenuator and Bracket Assembly

Installation Note N5225-90103 13
Step 5. Install the A46 and A49 Receiver Attenuator Assemblies
Refer to Figure 2 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 2 Port 1 and Port 2 Receiver Attenuator Assemblies Installation

14 Installation Note N5225-90103
Step 6. Assemble the A38 and A41 Source Attenuator Assemblies
Refer to Figure 3 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 3 Source Attenuator and Brackets Assembly

Installation Note N5225-90103 15
Step 7. Install the A38 and A41 Source Attenuator Assemblies
Refer to Figure 4 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 4 Source Attenuator Assemblies Installation

16 Installation Note N5225-90103
Step 8. Install Some Bottom-Side (Test Set) 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, 2-
port Configuration, Option 217” in the PDF Service Guide1. New parts are listed in Table 1 on page 7.
Install the following new cables in the order listed.
• W103 (N5245-20055) Port 2 RCVR B IN to A49 port 2 receiver attenuator
• W94 (N5245-20031)
A41 port 2 source attenuator to front-panel Port 2 SOURCE OUT
• W33 (N5245-20010) A32 port 2 receiver coupler to front-panel REF 2 SOURCE OUT
* As shown in Figure 5 on page 17, install four cable clamps (part number 1400-1334) to secure W33 (part
number N5245-20010).
1. See “Downloading the Online PNA Service Guide” on page 5.

Installation Note N5225-90103 17
Figure 5 Location of Cable Clamps to Secure W33
• W104 (N5245-20057) A49 port 2 receiver attenuator to A27 mixer brick (B)
• W47 (N5245-20119) REF 2 RCVR R2 IN to A27 mixer brick (R2)
• W47 (N5245-20119) REF 2 RCVR R2 IN to A27 mixer brick (R2)
• W18 (N5245-20049) A32 port 2 receiver coupler to W17
• W12 (N5245-20050) A29 port 1 receiver coupler to W11
• W82 (N5245-20077)
A38 port 1 source attenuator to front-panel Port 1 SOURCE OUT
• W42 (reuse) (N5245-20007) REF 1 RCVR R1 IN to A37 reference mixer switch
• W41 (reuse) (N5245-20006) A37 reference mixer switch to
front-panel REF 1 SOURCE OUT
• W21 (N5245-20118) A29 port 1 receiver coupler to A37 reference mixer switch

18 Installation Note N5225-90103
If the two screws that attach the reference mixer switch to the test set deck were loosened, torque these
screws now to 9 in-lbs.
* As shown in Figure 6, install a cable tie (part number 1400-0249) to secure W21 (part number N5245-
20118).
Figure 6 Location of Cable Tie to Secure W21
• W98 (N5245-20056) A46 port 1 receiver attenuator to A27 mixer brick (A)
• W81 (N5245-20029) A29 port 1 receiver coupler to A38 port 1 source attenuator
• W93 (N5245-20029)A32 port 2 receiver coupler to A41 port 2 source attenuator
Install the Ribbon Cables
To see an image showing the location of these cables, click the Chapter 6 bookmarks “Bottom Ribbon Cables
and Wire Harnesses, 2-port, Option 217” in the PDF Service Guide1. New parts are listed in Table 1 on page 7.
Connect step attenuator ribbon cables as follows:
• (N5245-60006) A38 port 1 source step attenuator to A23 test set motherboard J549
• (N5245-60006) A41 port 2 source step attenuator to A23 test set motherboard J546
• (N5245-60026) A46 port 1 receiver step attenuator to A23 test set motherboard J205
• (N5245-60026) A49 port 2 receiver step attenuator to A23 test set motherboard J208.
1. See “Downloading the Online PNA Service Guide” on page 5.

Installation Note N5225-90103 19
Step 9. Remove the Old Lower Front Panel Overlay
Refer to Figure 7 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 7 Lower Front Panel Overlay Replacement