9640A
Instruction Manual
4C-22
Questionable Status Register
Bit 2n
Label
Comment
0
1
Voltage
The voltage output is no longer levelled
1
2
Current
Not used, Always zero
2
4
Time
Not used, Always zero
3
8
Frequency
The frequency is no longer locked
4
16
Phase
Not used, Always zero
5
32
Modulation
Not used, Always zero
6
64
Calibration
Not used, Always zero
7
128
Unassigned
Not used, Always zero
8
256
Characterization
Factory use only
9
512
External
Ref
Frequency
unlocked
Unable to lock to the externally supplied
frequency
10
1024
Head Serial Number mismatch
The currently fitted head serial number was
not calibrated by this base unit
11
2048
External AM or FM overload
This external signal is too large
12
4096
Unassigned
Not used, Always zero
13
8192
Unassigned
Not used, Always zero
14
16384
Command warning
Not used, Always zero
15
32768
Not Used
Summary of Contents for 9640A Series
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