Keysight N5227A Service Manual page 94

Troubleshooting
Measurement System Troubleshooting
EEPROM Headers
The network analyzer application uses the firmware revision information stored in the pc board header
EEPROM. If the information stored in any EEPROM is incorrect, the network analyzer may not operate
properly.
The following table lists the pc boards in your network analyzer that contain EEPROM headers. The pc
boards are listed by name and part number and the correct firmware revision code is given for each.
PC Board Name
SPAM
13.5 GHz
LO Synthesizer
Test Set Motherboard
IF Multiplexer
Frequency Reference
26.5 GHz Source 2
13.5 GHz source 2 synthesizer
13.5 GHz source 1 synthesizer
26.5 GHz Source 1
GPIB
To view this EEPROM header information on the network analyzer display: press UTILITY
Service Utilities
, then
If the information is incorrect for any of the PC boards, contact Keysight Technologies. Refer to
Keysight" on page 2-6.
4-24
View EEPROM Headers
, then
PNA Series Microwave Network Analyzers
PC Board Part Hardware
Number ID
N5240-60077 A16
Was N5240-60056
N5240-60074
A15
Was N5242-60150
N5245-60157
A23
Was N5247-60001
N5240-60062 A24
N5240-60069 A14
Was N5240-60061
5087-7780 A10
N5240-60074 A17
Was N5242-60150
N5240-60074 A4
Was N5242-60150
5087-7780 A5
N5240-60059 A22
. Refer to Figure
N5227A
Firmware
Revision
A
D
E
A
C
A
D
D
A
A
, then
System
4-6.
"Contacting
Service Guide N5227-90001