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20
2.3.9 Status Commands
OVLD?
Example:
STAT?
Example:
Overload
Query the overload detection.
The OVLD? query returns
This follows the front‑panel
»OVLD?
0
amplifier is not overloaded
Status Flags
Query status flags.
STAT? returns a binary‑weighted integer, with bit definitions:
Weight
Bit
Flag
1
0
unknown command
2
1
invalid parameter
4
2
failed to execute command
8
3
front‑panel hardware failure
16
4
analog board hardware failure
32
5
non‑volatile memory error
64
6
factory calibration invalid
128
7
user calibration invalid
256
8
unable to set parameter
512
9
unable to configure system
1024
10
invalid serial number
2048
11
watchdog timer expired and disabled
4096
12
ADC autocalibration for + Out failed
8192
13
ADC autocalibration for − Out failed
16384
14
DC calibration failed
32768
15
reserved
+ Out output overload
65536
16
− Out output overload
131072
17
Bits remain latched to 1 until read by STAT?
»ABCD
»STAT?
1
indicates unknown command ("ABCD")
»STAT?
0
bits cleared after previous STAT? query
SR446 400 MHz Programmable Gain Preamplifier
1
whenever the amplifier outputs are overloaded.
indicator.
Ovld
2 Remote Operation
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