Keysight E3632A - The Questionable Status Register; Table 3-4 Bit Definitions - Questionable Status Register

Remote Interface Reference 3
SCPI Status Registers
E3632A User’s Guide 109
The Questionable Status register
The Questionable Status register provides information about
voltage and current regulation. Bit 0 is set when the voltage
becomes unregulated, and bit 1 is set if the current becomes
unregulated. For example if the power supply momentarily
goes to the constant current mode when the power supply is
operating as a voltage source (constant voltage mode), bit 0
is set to indicate that the voltage output is not regulated.
The Questionable Status register also provides information
that the power supply has an overtemperature condition and
that the overvoltage and overcurrent protection circuits have
tripped. Bit 4 reports an overtemperature condition of the
fan, bit 9 reports that the overvoltage protection circuit has
tripped, and bit 10 reports that the overcurrent protection
circuit has tripped. To read the register, send
STATus:QUEStionable?.
The Questionable Status event register is cleared when:
• you execute the *CLS (clear status) command.
• you query the event register using STAT:QUES? (status
questionable event register) command.
Table 3 - 4 Bit definitions — Questionable Status register
Bit Decimal value Definition
0 Voltage 1 The power supply is/was in the constant current mode.
1 Current 2 The power supply is/was in the constant voltage mode.
2–3 Not used 0 Always set to 0.
4 Over temperature 16 The fan has a fault condition.
5–8 Not used 0 Always set to 0.
9 Over voltage 512 The overvoltage protection circuit has tripped.
10 Over current 1024 The overcurrent protection circuit has tripped.
11–15 Not used 0 Always set to 0.