Service Guide E8364-90038
4- 25
PNA Series Microwave Network Analyzers
Troubleshooting
E8362C, E8363C, E8364C
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.
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
“Contacting
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
“Checking the Source Group” on page 4-30
,
“Checking
the Signal Separation Group” on page 4-38
, and
“Checking the Receiver Group” on page 4-42
).
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.
PC Board Name
PC Board Part
Number
Memory ID
Hardware
ID
Firmware
Revision
A5 SPAM
E8356-60006
3
6
A
A8 and A9 fractional-N synthesizer
E8364-60099
3
8
C
A10 frequency reference
E8364-60136
3
10
B
A11 phase lock
E8364-60137
3
11
C
ALC source (P/O A12 source 20)
E8362-60001
3
12
B
A13 frequency offset receiver
E8364-60097
3
13
A
A16 test set motherboard
E8364-60138
3
16
C
Содержание E8362C
Страница 11: ...Service Guide E8364 90038 1 1 1 Safety and Regulatory Information ...
Страница 21: ...Service Guide E8364 90038 2 1 2 General Product Information ...
Страница 33: ...Service Guide E8364 90038 3 1 3 Tests and Adjustments ...
Страница 81: ...Service Guide E8364 90038 4 1 4 Troubleshooting ...
Страница 137: ...Service Guide E8364 90038 5 1 5 Theory of Operation ...
Страница 171: ...Service Guide E8364 90038 6 1 6 Replaceable Parts ...
Страница 257: ...Service Guide E8364 90038 7 1 7 Repair and Replacement Procedures ...
Страница 341: ...Service Guide E8364 90038 8 1 8 General Purpose Maintenance Procedures ...
Страница 382: ...Index 20 Service Guide E8364 90038 Index ...