RIGOL DP832A - Manual (Page 20)

RIGOL Chapter 1 Programming Overview
1-10 DP800 Programming Guide
Table 1-2 Definitions of the bits in the channel questionable status register of the multi-channel model and
the decimal values corresponding to their binary weights
Bit Decimal Value Definition
0 Not used 0 Always be 0.
1 INST1 event summary 2 Summary information of CH1 events.
2 INST2 event summary 4 Summary information of CH2 events.
3 INST3 event summary 8 Summary information of CH3 events.
4-15 Not used 0 Always be 0.
Channel Questionable Status SUMMARY Register
DP831A provides 3 channel questionable status SUMMARY registers corresponding to the three channels
respectively. The channel questionable status SUMMARY register provides the channel voltage control,
current control, overvoltage and overcurrent information. When the voltage becomes unregulated, bit0
(VOLTage) is set; when the current becomes unregulated, bit1 (CURRent) is set. You can send
the :STATus:QUEStionable:INSTrument:ISUMmary[][:EVENt]? command to read the channel
questionable status SUMMARY register of the corresponding channel. The definitions of the bits in the
channel questionable status SUMMARY register and the decimal values of their binary weights are as shown
in Table 1-3.
Table 1-3 Definitions of the bits in the channel questionable status SUMMARY register of the multi-channel
model and the decimal values corresponding to their binary weights
Bit Decimal Value Definition
0 VOLTage 1
The power supply is working in constant
current mode and the voltage becomes
unregulated.
1 CURRent 2
The power supply is working in constant
voltage mode and the current becomes
unregulated.
2 OVP 4 Overvoltage.
3 OCP 8 Overcurrent.
4-15 Not used 0 Always be 0.
You can send the :STATus:QUEStionable:INSTrument:ISUMmary[]:COND? command to query the
current working mode (CV or CC mode) of the corresponding channel. When bit0 is true, the corresponding
channel is working in CC mode; when bit1 is true, the corresponding channel is working in CV mode; when
bit0 and bit1 are both true, both the output voltage and current of the corresponding channel becomes
unregulated; when bit0 and bit1 are both false, the power supply output is turned off.