Keysight N5221A Service Manual page 102

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 2-8.
4-24
Was N5240-60056 or
Was N5245-60003
View EEPROM Headers
, then
PNA Series Microwave Network Analyzers
PC Board Part Hardware
Number ID
N5240-60077
A12
N5240-60041 or
N5264-60005
N5240-60074
A11
Was N5242-60150
N5240-60163
A19
or
N5240-60043
N5240-60045 A20
N5240-60069
A10
Was N5240-60061
5087-7307 A8
N5240-60074
A13
Was N5242-60150
N5240-60074
A4
Was N5242-60150
5087-7307 A5
N5240-60059
A18
Was N5240-60052
. Refer to Figure
N5221A/22A
Firmware
Revision
A
D
E
A
C
A
D
D
A
A
System , then
4-6.
"Contacting
Service Guide N5222-90001