HP 34970A User Manual page 278

Chapter 5 Remote Interface Reference
The SCPI Status System
The Questionable Data Register
The Questionable Data register group provides information about the
quality of the instrument's measurement results. Any or all of these
conditions can be reported to the Questionable Data summary bit through
the enable register. To set the enable register mask, you must write a
decimal value to the register using the STATus:QUES:ENABle command.
A measurement overload condition is always reported in both the
Questionable Data event register (bits 0, 1, 2, 9, or 10) and the Standard
event register (bit 3). However, no error message is recorded in the
instrument's error queue.
Bit Definitions – Questionable Data Register
Bit Number
0 Voltage Overload
1 Current Overload
Not Used
2
3 Not Used
Not Used
4
5 Not Used
6 Not Used
7 Not Used
Not Used
8
9 Resistance Overload
10 Temperature Overload
11 Totalizer Overflow
12 Memory Overflow
13 Not Used
14 Not Used
15 Not Used
280
Decimal
Value Definition
1 Range overload on dc or ac volts.
2 Range overload on dc or ac current.
Returns "0".
4
8 Returns "0".
Returns "0".
16
32 Returns "0".
64 Returns "0".
128 Returns "0".
Returns "0".
256
512 Range overload on 2- or 4-wire resistance.
1024 Range overload on temperature.
2048 Count overflow on a totalizer channel.
4096 Memory is full; 1 or more readings are lost.
8192 Returns "0".
16384 Returns "0".
Returns "0".
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