Agilent Technologies E8362C Service Manual page 105

PNA Series Microwave Network Analyzers
E8362C, E8363C, E8364C
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
A5 SPAM
A8 and A9 fractional-N synthesizer
A10 frequency reference
A11 phase lock
ALC source (P/O A12 source 20)
A13 frequency offset receiver
A16 test set motherboard
To view this EEPROM header information on the network analyzer display, select System, Service, Utilities,
View EEPROM Headers in the network analyzer application.
If the information is incorrect for any of the pc boards, contact Agilent Technologies. Refer to
Agilent" on page 2-12.
Error Messages
PHASE LOCK LOST: The level of the signal from at least one of the reference receivers, and sensed by the A11
phase lock board, is too low to be accurately captured. this could be due to a problem in the source group,
signal separation group, or receiver group (refer to
the Signal Separation Group" on page
SOURCE UNLEVELED: The source ALC circuits on the A12 source or the A16 test set motherboard—E8363C
and E8364C only—is running open-loop. For the E8362C, replacing the A12 source can correct this. For the
E8363C or E8364C, check the cable connections for W37 and W38 from the A23 and A24 detectors to the
A16 test set motherboard, and for W39 from A16 to the A21 SOMA 50. If the problem is associated with one
port and not the other, replace the detector associated with the problem port. If the problem affects both
ports, replace the A16 test set motherboard.
Service Guide E8364-90038
PC Board Part
Number
E8356-60006
E8364-60099
E8364-60136
E8364-60137
E8362-60001
E8364-60097
E8364-60138
"Checking the Source Group" on page
4-38, and "Checking the Receiver Group" on page
Measurement System Troubleshooting
Hardware
Memory ID
ID
3 6
3 8
3 10
3 11
3 12
3 13
3 16
4-30,
4-42).
Troubleshooting
Firmware
Revision
A
C
B
C
B
A
C
"Contacting
"Checking
4-25