The Questionable Data Register
The questionable data register provides information about the quality of the
meter’s measurement results. Overload conditions can be reported in the
questionable data summary bit through the enable register. You must write a
decimal value using the STATus:QUEStionable:ENABle command to set
the enable register mask.
Note: A reading overload condition is always reported in both the
standard event register (bit 3) and the questionable data event register
(bits 0, 1, or 9). However, no error message is recorded in the meter’s error
queue.
Bit Definitions — Questionable Data Register
Bit
Decimal
Value
Definition
0 Voltage Overload 1 Range overload on dc volts
1 Not Used 2 Always set to 0.
2 Not Used 4 Always set to 0.
3 Not Used 8 Always set to 0.
4 Temperature Overload 16 Range overload on temperature
measurements.
5 Not Used 32 Always set to 0.
6 Not Used 64 Always set to 0.
7 Not Used 128 Always set to 0.
8 Not Used 256 Always set to 0.
9 Ohms Overload 512 Range overload on 2-wire or 4-wire
Ohms
10 Not Used 1024 Always set to 0.
11 Not Used 2048 Always set to 0.
12 Not Used 4096 Always set to 0.
13 Not Used 8192 Always set to 0.
14 Not Used 16384 Always set to 0.
15 Not Used 32768 Always set to 0.
4
Chapter 4 Remote Interface Reference
The SCPI Status Model
167
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