4-24 Service Guide N5227-90001
Troubleshooting PNA Series Microwave Network Analyzers
Measurement System Troubleshooting N5227A
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.
To view this EEPROM header information on the network analyzer display: press UTILITY , then
, then , then . Refer to Figure 4-6.
If the information is incorrect for any of the PC boards, contact Keysight Technologies. Refer to “Contacting
Keysight” on page 2-6.
PC Board Name
PC Board Part
Number
Hardware
ID
Firmware
Revision
SPAM N5240-60077
Was N5240-60056
A16 A
13.5 GHz LO Synthesizer
N5240-60074
Was N5242-60150
A15 D
Test Set Motherboard N5245-60157
Was N5247-60001
A23 E
IF Multiplexer N5240-60062 A24 A
Frequency Reference N5240-60069
Was N5240-60061
A14 C
26.5 GHz Source 2 5087-7780 A10 A
13.5 GHz source 2 synthesizer
N5240-60074
Was N5242-60150
A17 D
13.5 GHz source 1 synthesizer
N5240-60074
Was N5242-60150
A4 D
26.5 GHz Source 1 5087-7780 A5 A
GPIB N5240-60059 A22 A
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