This is the subregister of bit <n> of the QUEStionable:INSTrument subregister. This is a 16-bit register that stores information related to the status of and the questionable events that occur during operation of the PWX whose channel you specified.
Use <n> to specify the channel number.
For example, channel 2 is specified as "QUES:INST:ISUM2".
The QUEStionable status register bits may indicate that there are problems with the PWX's measured data.
|Bit||Bit weight||Bit name||Description|
|0||1||OV (OVP)||Overvoltage protection has been activated|
|1||2||OC (OCP)||Overcurrent protection has been activated|
|2||4||PF (AC)||Low AC input protection has been activated|
|4||16||OHP (OHP)||Overheat protection has been activated|
|6||64||OT2(OHP2)||Overheat protection2 has been activated|
|7||128||SENS||Incorrect sensing connection protection has been activated|
|8||256||FAN||Fan failure protection has been activated|
|9||512||INH||Output turned off through external control; OUTP command inhibit status|
|10||1024||UNR||Not operating in CV mode or CC mode (power limitation has been activated)|
|11||2048||I2C||I2C communication error|
|12||4096||OV2 (OVP2)||Overvoltage protection (120 % of the rated voltage) has been activated|
|14||16384||WDOG||Communication monitor has been activated|
|15||32768||Not Used||Always zero|