Agilent Technologies N5225-60114 Installation and operation manual

Agilent Kit Number: N5225-60114
Agilent Document Number: N5225-90124
Printed in USA January 18, 2013
Supersedes: December 9, 2011
© Agilent Technologies, Inc. 2011, 2013
Installation Note
Add 4-Port Capability Upgrade Kit
To Upgrade PNA N5224A or N5225A Option 219 to Option 419
Upgrade Kit Order Number: N5224AU-619 or N5225AU- 619

2Installation Note N5225-90124
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, AGILENT 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. AGILENT 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 AGILENT 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 Agilent 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 N5225-90124 3
Description of the Upgrade
This upgrade converts your N5224A or N5225A Option 219 2-port analyzer to an N5224A or N5225A Option 419
4-port analyzer by adding:
• an additional 26.5 GHz source board
• an additional 13.5 GHz source synthesizer board
• two additional 40 GHz doublers
• an additional mixer brick
• two additional receiver couplers and brackets
• two additional test port couplers
• two additional bias tees and brackets
• two additional source attenuators and brackets
• two additional receiver attenuators and brackets
• an additional cable guard for front panel jumpers
•asplitter
• a 3 dB pad
• a modified front panel
• new cables
Getting Assistance from Agilent
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 Agilent.
Contacting Agilent
Assistance with test and measurements needs and information on finding a local Agilent office are available on
the Web at:
http://www.agilent.com/find/assist
If you do not have access to the Internet, please contact your Agilent field engineer.
NOTE In any correspondence or telephone conversation, refer to the Agilent product by its model
number and full serial number. With this information, the Agilent representative can determine
whether your product is still within its warranty period.

4Installation Note N5225-90124
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 an Agilent 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.agilent.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, Agilent 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 N5225-90124 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.agilent.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
Customer Order No.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.
1. See “Downloading the Online PNA Service Guide” on page 5.
Description Agilent 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) 1 N/A
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) 1 N/A
3/16-in (5 mm) nutsetter or open end torque wrench - set to 6 in-lbs (0.68 N.m) 1 N/A
5/8-in (16 mm) nutsetter or open end torque wrench - set to 21 in-lbs (2.38 N.m) 1 N/A
9 mm nutsetter or open end torque wrench - set to 21 in-lbs (2.38 N.m) 1 N/A
1-in (25.4 mm) torque wrench - set to 72 in-lbs (8.15 N.m) 1 N/A

6Installation Note N5225-90124
About Installing the Upgrade
Products affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .N5224A or N5225A Option 219
Installation to be performed by . . . . . . . . . . . . . . . . . . . . . . . .Agilent service center or personnel qualified by
Agilent
Estimated installation time . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 hours
Estimated adjustment time. . . . . . . . . . . . . . . . . . . . . . . . . . . .0.5 hours
Estimated full instrument calibration time . . . . . . . . . . . . . . .4.5 hours

Installation Note N5225-90124 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 Agilent
Te c h n o l o g i e s . R e f e r t o “Contacting Agilent” 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 N5225-60114
Ref
Desig. Description Qty Part Number
-Installation note (this document) 1 N5225-90124
A10 26.5 GHz source (2) board 1 5087-7342
A12 40 GHz doubler assembly port 3 2 5087-7349
A13 40 GHz doubler assembly port 4
A17 13.5 GHz (source 2) synthesizer board 1 N5242-60150
A26 Splitter 1 5067-4086
A28 Mixer brick (2) 1 5087-7323
A30 Test port 3 reference coupler 2 5087-7760
A31 Test port 4 reference coupler
A34 Test port 3 coupler 2 5087-7793
A35 Test port 4 coupler
A39 Test port 3 source attenuator 2 33325-60016
A40 Test port 4 source attenuator
A43 Test port 3 bias tee 2 5087-7789
A44 Test port 4 bias tee
A47 Test port 3 receiver attenuator 2 33325-60017
A48 Test port 4 receiver attenuator
- Front frame, 4-port 1 N5247-20141
-Machine screw, M3.0 x 6, flat head (to attach front frame to coupler plate) 3 0515-1946
-Machine screw, M3.0 x 14, pan head (to attach bias tee to bracket) 6 0515-0665
-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) 5 0515-0374
-
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, pan head (4 to attach A47 and A48 receiver attenuator
assembly to test set deck; 4 to attach A39 and A40 source attenuator assembly to
test set deck.
5 0515-0430
-Machine screw, M3.0 x 12, pan head (1 to attach cable bracket to test set deck. 2 0515-0664

8Installation Note N5225-90124
-
Machine screw, M3.0 x 8, pan head (3 to attach shield to A28 mixer brick; 8 to
attach two src attn and two rcvr attn to brackets; 4 to attach bias tee brackets to
deck)
14 0515-0372
-Machine screw, M2.5 x 16, pan head (2 to attach splitter to mixer brick) 3 0515-2007
-Machine screw, M3.0 x 25, pan head (3 to attach A28 mixer brick to block) 4 0515-0667
-Machine screw, M3.0 x 20, flat head (2 to attach bracket to A10 26.5 GHz source) 3 0515-2078
-Machine screw, M3.0 x 18, pan head (1 to attach bracket to A10 26.5 GHz source) 2 0515-0666
-Front panel overlay (label), 4-port 1 N5227-80005
-Keypad overlay (label) 1 N5242-80005
-Power button overlay (label) 1 N5242-80007
-Nameplate, N5224A 1 N5224-80001
-Nameplate, N5225A 1 N5225-80001
- Test set front plate, 4-port 1 N5224-00005
- 2.4 mm dust cap for A28 mixer brick 1 N5247-20138
- Gap pad (between mixer brick A28 and shield) 4 N5245-20125
- Gap pad (between each test coupler and the test set front plate) 4 E4403-20033
- Shield, mixer brick 1 N5245-00023
- 3 dB pad, attached to R4 connector on A28 mixer brick 1 08490-60039
- 50 ohm load, attached to A13 40 GHz doubler 1 1810-0118
-Vibration mount (between couplers 1 & 3, and 2 & 4) 2 0460-2725
-Mounting nuts (for port 3 & 4 test port couplers) 2 5022-1087
-Cable guard, center jumper cables 1 N5242-00030
-Cable clamp, 1 to secure W25 (N5245-20116); 1 to secure W29 (N5245-20117). 6 1400-1334
-Cable tie wrap, 1 to secure W44 (N5245-20020); 1 to secure W21 (N5245-
20008).
6 1400-0249
-Bracket for bias tee 2 N5245-00011
-Bracket for reference coupler 2 N5245-00017
-Bracket for cables 1 N5245-00022
-Bracket for receiver attenuator and source attenuator 4 N5245-00015
-Bracket for A10 26.5 GHz source (2) board 1 N5247-20136
W2 RF cable, A10 source (2) P1 to A17 13.5 GHz source (2) synthesizer J1207
(4-port) 1 N5245-20100
W7 RF cable, A10 source (2) P5 to A12 port 3 doubler 1 N5245-20034
W8 RF cable, A10 source (2) P3 to A13 port 4 doubler 1 N5245-20035
W9 RF cable, A10 source (2) P4 to A12 port 3 doubler 1 N5245-20032
W10 RF cable, A12 port 3 doubler to A13 port 4 doubler 1 N5245-20033
W13 RF cable, A12 port 3 doubler to W14 1 N5245-20036
W14 RF cable, A30 port 3 receiver coupler to W13 1 N5245-20043
Table 1 Contents of Upgrade Kit N5225-60114
Ref
Desig. Description Qty Part Number

Installation Note N5225-90124 9
W15 RF cable, A13 port 4 doubler to W16 1 N5245-20036
W16 RF cable, A31 port 4 receiver coupler to W15 1 N5245-20044
W21 RF cable, A29 port 1 receiver coupler to A37 reference mixer switch 1 N5245-20008
W22 RF cable, A33 port 1 coupler to front-panel Port 1 CPLR ARM 1 N5245-20014
W25 RF cable, A30 port 3 receiver coupler to front-panel REF 3 SOURCE 1 N5245-20116
W26 RF cable, A34 port 3 coupler to front-panel Port 3 CPLR ARM 1 N5245-20015
W29 RF cable, A31 port 4 receiver coupler to front-panel REF 4 SOURCE 1 N5245-20117
W30 RF cable, A35 port 4 coupler to front-panel Port 4 CPLR ARM 1 N5245-20018
W34 RF cable, A36 port 2 coupler to front-panel Port 2 CPLR ARM 1 N5245-20019
W36 RF cable, Front panel jumper 6 N5245-20155
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
W47 RF cable, REF 2 RCVR R2 IN to A27 mixer brick (R2) 1 N5245-20115
W52 RF cable, A25 HMA26.5 to A26 splitter 1 N5245-20013
W53 RF cable, A26 splitter to A27 mixer brick 1 N5245-20023
W54 RF cable, A26 splitter to A28 mixer brick 1 N5245-20022
W62 RF cable, A27 mixer brick (R1) to A24 IF multiplexer (P411) 1 N5242-60021
W63 RF cable, A27 mixer brick (R2) to A24 IF multiplexer (P412) 1 N5242-60022
W65 RF cable, A28 mixer brick (D) to A24 IF multiplexer (P801) 1 N5242-60024
W66 RF cable, A28 mixer brick (R4) to A24 IF multiplexer (P414) 1 N5242-60019
W67 RF cable, A28 mixer brick (R3) to A24 IF multiplexer (P413) 1 N5242-60020
W68 RF cable, A28 mixer brick (C) to A24 IF multiplexer (P601) 1 N5242-60023
W70 RF cable, A24 IF multiplexer board P203 to A16 SPAM board J2 1 N5242-60013
W72 RF cable, A24 IF multiplexer board P603 to A16 SPAM board J5 1 N5242-60015
W77 RF cable, A14 frequency reference board J7 to A17 13.5 GHz (source 2)
synthesizer board J5 (Located on bottom of board.) 1 N5242-60030
W84 RF cable, A33 port 1 coupler to A42 port 1 bias tee 1 N5245-20085
W85 RF cable, A30 port 3 receiver coupler to A39 port 3 source attenuator 1 N5245-20026
W86 RF cable,
A39 port 3 source attenuator to front-panel Port 3 SOURCE OUT 1 N5245-20027
W87 RF cable, Port 3 CPLR THRU to A43 port 3 bias tee 1 N5245-20089
W88 RF cable, A43 port 3 bias tee to A34 port 3 coupler 1 N5245-20086
W89 RF cable, A31 port 4 receiver coupler to A40 port 4 source attenuator 1 N5245-20026
W90 RF cable,
A40 port 4 source attenuator to front-panel Port 4 SOURCE OUT 1 N5245-20028
W91 RF cable, Port 4 CPLR THRU to A44 port 4 bias tee 1 N5245-20090
W92 RF cable, A44 port 4 bias tee to A35 port 4 coupler 1 N5245-20088
W96 RF cable, A45 port 2 bias tee to A36 port 2 coupler 1 N5245-20087
W99 RF cable, Port 3 RCVR C IN to A47 port 3 receiver attenuator 1 N5245-20073
Table 1 Contents of Upgrade Kit N5225-60114
Ref
Desig. Description Qty Part Number

10 Installation Note N5225-90124
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.
W100 RF cable, A47 port 3 receiver attenuator to A28 mixer brick (C) 1 N5245-20066
W101 RF cable, Port 4 RCVR D IN to A48 port 4 receiver attenuator 1 N5245-20074
W102 RF cable, A48 port 4 receiver attenuator to A28 mixer brick (D) 1 N5245-20075
-Ribbon cable, A23 test set motherboard J547 to A39 port 3 source attenuator 2 N5245-60006
-Ribbon cable, A23 test set motherboard J548 to A40 port 4 source attenuator
-Ribbon cable, A23 test set motherboard J206 to A47 port 3 receiver attenuator 2 N5242-60007
-Ribbon cable, A23 test set motherboard J207 to A48 port 4 receiver attenuator
-Ribbon cable, A23 test set motherboard J552 to A28 mixer brick (2) J52 1 N5245-60008
-Wire harness, A43 port 3 bias tee to A23 test set motherboard J543 2 P/O bias tee
-Wire harness, A44 port 4 bias tee to A23 test set motherboard J544
Table 1 Contents of Upgrade Kit N5225-60114
Ref
Desig. Description Qty Part Number

Installation Note N5225-90124 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 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 A47 and A48 Receiver Attenuator Assemblies.
Step 13. Install the A47 and A48 Receiver Attenuator Assemblies.
Step 14. Assemble the A39 and A40 Source Attenuator Assemblies.
Step 15. Install the A39 and A40 Source Attenuator Assemblies.
Step 16. Install the Bias Tee Brackets.
Step 17. Install the A43 and A44 Bias Tees.
Step 18. Assemble the A33 - A36 Test Port Coupler Assemblies.
Step 19. Install the LED Boards, Bulkhead Connectors, and Test Port Coupler Assemblies to the 4-Port Test Set
Front Plate.
Step 20. Install the 4-Port Coupler Plate Assembly to the Deck.
Step 21. Assemble and Install the A12 and A13 40 GHz Doubler Assemblies.
Step 22. Install Bracket to A10 Source Assembly.
Step 23. Assemble the A10 26.5 GHz Source 2 Assembly.
Step 24. Install the A10 26.5 GHz Source 2 Assembly and Cables.

12 Installation Note N5225-90124
Step 25. Install the A17 13.5 GHz (Source 2) Synthesizer Board and Cables.
Step 26. Install the Cable Bracket Mount.
Step 27. Install Some Bottom-Side (Test Set) Cables.
Step 28. Secure the Front Panel Bulkhead Connectors.
Step 29. Install Cables on IF Multiplexer Board.
Step 30. Reinstall the A23 Test Set Motherboard.
Step 31. Install Cables on the A23 Test Set Motherboard.
Step 32. Replace the Front Frame in the Front Panel Assembly.
Step 33. Reinstall Front Panel Assembly.
Step 34. Install the Overlays and Nameplate.
Step 35. Install the Front Panel Jumper Cables.
Step 36. Reinstall the Inner Cover.
Step 37. Reinstall the Outer Cover.
Step 38. Remove Option 219 License.
Step 39. Enable Options P04 (400) and 419.
Step 40. Perform Post-Upgrade Adjustments and Calibration.
Step 41. Prepare the PNA for the User.

Installation Note N5225-90124 13
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 Agilent for assistance before beginning the installation of
this upgrade. Refer to “Contacting Agilent” 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
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.
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 219” in the PDF Service Guide1.
These cables may be discarded - they will not be reinstalled.
1. See “Downloading the Online PNA Service Guide” on page 5.

14 Installation Note N5225-90124
• W21 (N5245-20118) A29 port 1 receiver coupler to A37 reference mixer switch
• W22 (N5245-20025) A33 port 1 coupler to front-panel REF 1 CPLR ARM
• W34 (N5245-20024) A36 port 2 coupler to front-panel REF 2 CPLR ARM
• W47 (N5245-20119) A27 mixer brick (R2) to
front-panel REF 2 RCVR R2 IN
• 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
• W84 (N5245-20046) A33 port 1 coupler to A42 port 1 bias tee
• W96 (N5245-20047) A36 port 2 coupler to A45 port 2 bias tee
These cables must be saved - they will be reinstalled.
• W12 (N5245-20050) A29 port 1 receiver coupler to W11
• W18 (N5245-20049) A32 port 2 receiver coupler to W17
• W36 (N5245-20155) Front panel jumpers (quantity = 6)
NOTE: Remove and save the cable guards for the front panel jumpers.
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.

Installation Note N5225-90124 15
Step 8. Assemble the A28 Mixer Brick Assembly
1. Follow the instruction shown in Figure 1. New parts are listed in Table 1 on page 7 of this document.
Figure 1 A28 Mixer Brick Assembly

16 Installation Note N5225-90124
2. Follow the two instructions shown in Figure 2.
Figure 2 A28 Mixer Brick Shield Installation

Installation Note N5225-90124 17
3. Follow the two instructions shown in Figure 3.
Figure 3 3 dB Pad and Splitter Installation

18 Installation Note N5225-90124
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 N5225-90124 19
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

20 Installation Note N5225-90124
Figure 6 A35 Reference Coupler Port 4 Assembly