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Command
CDE? (Cont'd)
DDE?
3-20
Table 3-11. Hardware Error Messages (Continued)
Response
DDE nr1
Description
8
256
Not Used
9
512
EED, EEPROM has been
defaulted
10
1024
Not Used
11
2048
Not Used
12
4096
EEF, EEPROM failure to be
written
13
8192
Not Used
14
16384
BNI, Board Not Installed
15
32768
REF, Reference Generator
unlocked
Reset: n/c
Example: CDE 00016
Request the latched error status. Reading this
register clears it until the fault reoccurs. This is
a bit mapped response where 0 = (Okay) and
1 = (Fault).
Bit
Value
Description
0
1
Not Used
1
2
Not Used
2
4
Not Used
3
8
Not Used
4
16
FXE, FLEX Bootload failure
5
32
1LO, 1st LO unlocked
6
64
2LOT, 2nd LO Translation
Loop unlocked
7
128
2LOR, 2nd LO Resolution
Loop unlocked
8
256
Not Used
9
512
EED, EEPROM has been
defaulted
10
1024
Not Used
11
2048
Not Used
12
4096
EEF, EEPROM failure to be
written
13
8192
Not Used
14
16384
BNI, Board Not Installed
15
32768
REF, Reference Generator
unlocked
Reset: n/c
Example: DDE 00000
E2730A VXI RF TUNER
OPERATION
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