Keysight x series Quick start guide

N9042B
Power Supply Upgrade
Option HW1
X-Series Signal Analyzer
INSTALLATION NOTE

Notices
© Copyright 2023 Keysight Technologies, Inc.
The information contained in this document is subject to change without notice.
Keysight Technologies makes no warranty of any kind with regard to this material, including but
not limited to, the implied warranties of merchantability and fitness for a particular purpose.
Keysight Technologies shall not be liable for errors contained herein or for incidental or
consequential damages in connection with the furnishing, performance, or use of this material.
Manual Part Number
N9042-90012
Edition
Edition 1, January 2023
Supersedes: none
Printed in USA/Malaysia
Published by:
Keysight Technologies, Inc.
1400 Fountaingrove Parkway
Santa Rosa, CA 95403

Installation Note N9042-90012 3
Option HW1 – Power Supply Upgrade
Option HW1 – Power Supply Upgrade
This document provides detailed instructions for the installation of the Power Supply upgrade for
the N9042B UXA Signal Analyzer.
Please be sure to read this entire document before attempting to perform this upgrade. Then, be
sure to perform the steps in this procedure in the order that they are listed so that the installation
will complete properly, and the instrument will function as desired when completed.
Compatibility
This instrument option requires no specific instrument firmware version and is compatible with all
N9042B instruments. However, all instruments with option G2H do not require this upgrade, they
include it from the factory.
Instrument Calibration
The validity of any existing calibration that the instrument being upgraded may have will not be
affected by the installation of this upgrade.
Products Affected: UXA N9042B
To Be Performed By: (X) Keysight Service Center
( ) Advanced User
()User
Estimated Installation Time:
Estimated Adjustment Time:
Estimated Verification Time:
2.0 Hours
0.0 Hours
1.0 Hours

4Installation Note N9042-90012
What You Will Find in this Document
What You Will Find in this Document
ESD Information............................................................................................................ page 5
Upgrade Contents ........................................................................................................ page 7
Tools Required .............................................................................................................. page 7
Initial Instrument Functionality Check ........................................................................ page 8
Option G2H Check.....................................................................................................page 8
Option ST1/ST2 Check..............................................................................................page 8
Option R40 Check......................................................................................................page 8
Upgrade Instructions.................................................................................................... page 9
Hardware Removal ....................................................................................................page 9
Hardware Installation ............................................................................................. page 20
Verify Operation ...................................................................................................... page 29
Instrument Button Up............................................................................................. page 30
Rear Panel Labels .................................................................................................. page 31
Adjustments and Performance Verification.............................................................. page 32
Manual Procedures Required................................................................................. page 32
Automated Utilities Required................................................................................. page 32
Automated Adjustments Required ........................................................................ page 32
Automated Performance Verification Testing Required ....................................... page 32

Installation Note N9042-90012 5
ESD Information
ESD Information
Protection from Electrostatic Discharge
Electrostatic discharge (ESD) can damage or destroy electronic components. All work on electronic
assemblies should be performed at a static-safe workstation. Figure 1 shows an example of a
static-safe workstation using two types of ESD protection:
— Conductive table-mat and wrist-strap combination.
— Conductive floor-mat and heel-strap combination.
Both types, when used together, provide a significant level of ESD protection. Of the two, only the
table-mat and wrist-strap combination provides adequate ESD protection when used alone. To
ensure user safety, the static-safe accessories must provide at least 1 megohm of isolation from
ground.
Figure 1 Example of a Static-Safe Workstation
These techniques for a static-safe workstation should not be used when working on circuitry
with a voltage potential greater than 500 volts.

6Installation Note N9042-90012
ESD Information
Handling of Electronic Components and ESD
The possibility of unseen damage caused by ESD is present whenever components are transported,
stored, or used. The risk of ESD damage can be greatly reduced by paying close attention to how all
components are handled.
— Perform work on all components at a static-safe workstation.
— Keep static-generating materials at least one meter away from all components.
— Store or transport components in static-shielding containers.
Test Equipment Usage and ESD
— Before connecting any coaxial cable to an analyzer connector, momentarily short the center and
outer conductors of the cable together.
— Personnel should be grounded with a 1 megohm resistor-isolated wrist-strap before touching
the center pin of any connector and before removing any assembly from the analyzer.
— Be sure that all analyzers are properly earth-grounded to prevent build-up of static charge.
For Additional Information about ESD
For more information about preventing ESD damage, contact the Electrical Over
Stress/Electrostatic Discharge (EOS/ESD) Association, Inc. The ESD standards developed by this
agency are sanctioned by the American National Standards Institute (ANSI).
Always handle printed circuit board assemblies by the edges. This will reduce the possibility of
ESD damage to components and prevent contamination of exposed plating.

Installation Note N9042-90012 7
Upgrade Contents
Upgrade Contents
This upgrade kits includes a new higher capacity power supply assembly to replace the existing
one. This kit is intended to be used when the owner of the instrument has requested to have the
power capacity increased for one of the power intensive wideband measurement applications that
require it.
Tools Required
— TORX Driver, T-10
— TORX Driver, T-20
— Nut Driver, 5.5 mm
—Multi-BitTorqueDriver
— 5/8" Nut Driver
— 5/16" Wrench
Table 1 Upgrade Contents
Part Number Description Quantity
0515-0372 Screw, Panhead, TORX-T10 M3X0.5 8mm-LG 6
0515-1946 Screw, Flathead, TORX-T10 M3X0.5 6mm-LG 18
0515-2032 Screw, Flathead, TORX-T10 M3X0.5 8mm-LG 9
0515-2151 Screw, Flathead, TORX-T6 M2X0.4 4mm-LG 1
0535-0031 Nut-HEX W/Lock-Washer M3X0.5 2
0950-6424 Power Supply, AC-DC Switching, 695 W 1
N9041-00043 Rear Frame 1
N9041-00050 Blank Cover 1
N9041-00052 Nut Plate 1
N9042-80007 Label, KCC, 1220705 1

8Installation Note N9042-90012
Initial Instrument Functionality Check
Initial Instrument Functionality Check
Power on the instrument and allow it to complete its boot up process. Verify that there are no
instrument messages that would indicate that there is an issue with either the instrument hardware
or software. If there are any issues, investigate and fix the problem before continuing with this
upgrade.
Option G2H Check
While the instrument is still powered on check to see if the instrument has Option G2H installed. To
do so press System, Show System and look on the System Information screen for Option G2H.
If the instrument has Option G2H installed it does not need this upgrade, as it should already have
this hardware installed.
Option ST1/ST2 Check
While the instrument is still powered on check to see if the instrument has Option ST1 or ST2
installed. To do so press System, Show System and look on the System Information screen for
Option ST1 or ST2. Note whether one of these options is installed or not below.
Option ST1 or ST2 Installed: __________ Yes __________ No
Option R40 Check
While the instrument is still powered on check to see if the instrument has Option R40 installed. To
do so press System, Show System and look on the System Information screen for Option R40.
Note whether Option R40 is installed or not below.
Option R40 Installed: __________ Yes __________ No
The following procedure will ask you to make decisions based on whether or not these options are
installed in the instrument.

Installation Note N9042-90012 9
Upgrade Instructions
Upgrade Instructions
Hardware Removal
Dress Cover Removal
1. Turn the instrument off and disconnect the power cord.
2. Referring to Figure 2, remove the two screws (1) that attach the strap handles (2) from both
sides of the instrument and remove the strap handles.
Figure 2 Dress Cover Removal
3. Remove the four rear feet (4) by removing the four screws (3) and washers that attach them.
4. Remove the four bottom feet (6) by first removing the locking keys and then lifting the tabs
and sliding the foot toward the tabs.
5. Carefully slide the dress cover (5) off the instrument. This dress cover will not be reused.

10 Installation Note N9042-90012
Upgrade Instructions
Top Brace Removal
6. Referring to Figure 3, remove the fourteen flathead screws (1) and three panhead screws (2)
attaching the top brace (3) to the instrument and set it aside.
Figure 3 Top Brace Removal

Installation Note N9042-90012 11
Upgrade Instructions
Rear Panel Removal
7. If the instrument has Option ST1 or ST2, remove the four panhead screws (1) that attach the
power supply adapter plate (2) to the rear panel, as seen in Figure 4. This plate can be
discarded.
Figure 4 Power Supply Adapter Plate Removal - Option ST1 or ST2

12 Installation Note N9042-90012
Upgrade Instructions
8. Referring to Figure 5, remove the four flathead screws (1) at the corners, the eight large
panhead screws (3), and the twelve panhead screws (2) that attach the rear panel to the
instruments.
Figure 5 Rear Panel Removal
9. Remove the nuts and lock washers from the two SMA connectors (4), and the nut and lock
washer from the BNC connector (5).

Installation Note N9042-90012 13
Upgrade Instructions
10.Referring to Figure 6, if the instrument has Option ST1 or ST2, carefully remove the ODI cable
(1) from the rear panel ODI connector (2) by sliding the locking tab up.
Figure 6 Rear Panel ODI Cable Removal - Option ST1 or ST2
11.Carefully remove the rear panel from the instrument. If the instrument has Option ST1 or ST2
the rear panel will be reused. If not, it can be discarded.

14 Installation Note N9042-90012
Upgrade Instructions
Rear Brace Removal
12.Referring to Figure 7, remove the four panhead screws (1) and the two flathead screws (2),
then remove the rear brace (3) from the instrument.
Figure 7 Rear Brace Removal
If the instrument has Option ST1, ST2, or R40 the rear brace removal will also require that the
optical cables also be disconnected and detached from the rear brace before it can be removed,
as seen in Figure 8. Be careful not to pinch or bend the optical cables too tight as they can be
easily damaged.

Installation Note N9042-90012 15
Upgrade Instructions
Figure 8 Rear Brace Removal - Optional Hardware

16 Installation Note N9042-90012
Upgrade Instructions
A21 Wideband Digital IF Removal
13.Referring to Figure 9, unplug all the coax cables that are connected to the A21 Wideband
Digital IF assembly in the area shown (1).
14.Pull on the two board extractors (2) and remove the A21 Wideband Digital IF assembly from
the instrument. Be careful not to damage any of the cables that were unplugged.
Figure 9 A21 Wideband Digital IF Removal
If the instrument has Option R40, the A22 Ultra-Wideband Analog IF will also need to be
removed, as seen in Figure 10. If done carefully, the cables that interconnect between these
two assemblies do not need to be disconnected.

Installation Note N9042-90012 17
Upgrade Instructions
Figure 10 A22 Ultra-Wideband Analog IF Removal - Option R40

18 Installation Note N9042-90012
Upgrade Instructions
A4 System Processor Removal
15.Referring to Figure 11, remove the two panhead screws (1) from each side that attaches the
A4 System Processor (3) to the instrument.
16.Remove the two panhead screws (2) that secure the extractors.
17.Remove the A4 System Processor by pulling on the two extractors and sliding it out the rear of
the instrument.
Figure 11 A4 System Processor Removal

Installation Note N9042-90012 19
Upgrade Instructions
A6 Power Supply Removal
18.Referring to Figure 12, remove the 9 flathead screws (1) attaching the A6 Power Supply to the
instrument.
19.Slide the A6 Power Supply out the rear of the instrument and discard it.
Figure 12 A6 Power Supply Removal

20 Installation Note N9042-90012
Upgrade Instructions
Hardware Installation
A6 Power Supply Installation
1. Referring to Figure 13, slide the new A6 Power Supply into the rear of the instrument until it
fully engages the mating connectors on the A7 Midplane board.
2. Install the nine new flathead screws (0515-2032) (1) to attach the A6 Power Supply to the
instrument through the power supply bracket. Torque the screws to 9 in-lbs.
Figure 13 A6 Power Supply Installation