126
The following conditions will clear the standard event enable register.
⚫
Users turn on the power, and have set the DMM previously by using the *PSC 1 command.
⚫
Users execute a *ESE 0 command.
※
Note 1: When the DMM is powered on, the standard event enable register won
’
t be cleared
if users have set the DMM previously by using *PSC 0.
※
Note 2: T
he reset command (*RST) or device clear in event registers won’t clear bits.
About the Questionable Data Register
The questionable data register reports the quality of the DMM
’
s measurement results, as well
overload conditions and high/low limit test results. Through the enable register, all of the
conditions can be reported in the questionable data summary bit. At the moment, users have
to write a decimal value by using the STATus:QUESTionable:ENABle command to set the
enable register mask.
Bit Definitions for Questionable Data Register
Bit
Decimal
Value
Definition
0. Voltage Overload
1
Range overload on dc/ac volts, frequency, period, diode or ratio
function
1. Current Overload
2
Range overload on dc/ac current function.
2. Not Used
4
Set to 0
3. Not Used
8
Set to 0
4. Not Used
16
Set to 0
5. Not Used
32
Set to 0
6. Not Used
64
Set to 0
7. Not Used
128
Set to 0
8. Not Used
256
Set to 0
9. Ohms Overload
512
Range overload on 2-/4-wired ohm function.
10. Not Used
1024
Set to 0
11. Limit Failed at LO
2048
Reading is less than lower limit under limit test.
12. Limit Failed at HI
4096
Reading is excess upper limit under limit test.
13. Not Used
8192
Set to 0
14. Not Used
16384
Set to 0
15. Not Used
32768
Set to 0
The following conditions will clear the questionable data event register.
⚫
Users execute a *CLS command.
⚫
Users query the event register by using STATus:QUEStionable:EVENt?.
The following conditions will clear the questionable data enable register.
⚫
Users turn on the power without using *PSC command.
⚫
Users execute the STATus:PRESet command.
⚫
Users execute the STATus:QUEStionable:ENABle 0 command.
※
Note: T
he reset command (*RST) or device clear in event registers won’t clear bits.
