Bit Bit Name Decimal
Value
Definition
0 CV 1 Output is in constant voltage
1 CC 2 Output is in constant current
2 OFF 4 Output is programmed off
3 WTG-meas 8 Measurement system is waiting for a trigger
4 WTG-tran 16 Transient system is waiting for a trigger
5 MEAS-active 32 Measurement system is initiated or in progress
6 TRAN-active 64 Transient system is initiated or in progress
7 User1 128 The User1-defined expression is true
8 User2 256 The User2-defined expression is true
9-15 not used not used 0 is returned
Questionable Status Group
These two register groups record signals that indicate abnormal operation. The group consists of a
Condition, PTR/NTR, Event, and Enable register. The outputs of the Questionable Status group are
logically-ORed into the QUEStionable summary bit (3) of the Status Byte register. Refer to Status
Registers for a description of each register. The following table describes the Questionable1 Status
register bit assignments.
Bit Bit Name Decimal
Value
Definition
0 OV 1 Output is disabled by the over-voltage protection
1 OC 2 Output is disabled by the over-current protection
2 PF 4 Output is disabled by power-fail (low-line or brownout on AC line)
3 CP+ 8 Output is disabled by the positive over-power limit
4 OT 16 Output is disabled by the over-temperature protection
5 CP- 32 Output is disabled by the negative over-power limit
6 OV- 64 Output is disabled by a negative OV due to reversed sense leads
7 LIM+ 128 Output is in positive voltage or current limit
8 LIM- 256 Output is in negative current limit
9 INH 512 Output is disabled by an external INHibitsignal
10 UNR 1024 Output is unregulated
Keysight N6900/N7900 Series Operating and Service Guide 286
6 SCPI Programming Reference
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