Agilent Technologies N5241A, Service Manual

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4-24 Service Guide N5242-90001
Troubleshooting PNA Series Microwave Network Analyzers
Measurement System Troubleshooting N5241A/42A
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 .
If the information is incorrect for any of the pc boards, contact Agilent Technologies. Refer
to
“Contacting Agilent” on page 2-15 .
Error Messages
SOURCE UNLEVELED:
The source ALC circuit on the A19 test set motherboard is running
open-loop. Check the cable connections for the A21 HMA26.5 and the A19 test set
motherboard.
PC Board Name
PC Board Part
Number
Hardware
ID
Firmware
Revision
SPAM N5264-60005 A12 A
13.5 GHz
LO Synthesizer N5230-60002 A11 D
Test Set Motherboard N5240-60043 A19 E
IF Multiplexer N5240-60045 A20 A
Frequency Reference N5240-60042 A10 C
26.5 GHz Source 2 5087-7307 A8 A
13.5 GHz source 2 synthesizer
N5230-60002 A13 D
13.5 GHz source 1 synthesizer N5230-60002 A4 D
26.5 GHz Source 1 5087-7307 A5 A
GPIB N5240-60052 A18 A
System
Service Utilities View EEPROM Headers