STATus:QUEStionable[:EVENt]?

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STATus:QUEStionable[:EVENt]?

Syntax

Description

This command queries the condition register for the Questionable Data Register group. This is a read-destructive register and the bits are cleared when you read the register.

For more information on the Status System for the instrument, see Status System Introduction.

Used With:

34901A 20 Channel Multiplexer (2/4-wire) Module
34902A 16 Channel Multiplexer (2/4-wire) Module
34907A Multifunction Module (digital input and totalizer channels only)
34908A 40 Channel Single-Ended Multiplexer Module

Remarks

The following table lists the bit definitions for the Questionable Data Register.

Bit # Bit Name Decimal Value Definition

0 Voltage Overload 1 The instrument has experienced a voltage overload.

1 Current Overload 2 The instrument has experienced a current overload.

2 Not Used 4 (Always returns 0)

3 Not Used 8 (Always returns 0)

4 Not Used 16 (Always returns 0)

5 Not Used 32 (Always returns 0)

6 Not Used 64 (Always returns 0)

7 Not Used 128 (Always returns 0)

8 Not Used 256 (Always returns 0)

9 Res Overload 512 The instrument has experienced a resistance overload.

10 Temperature Overload 1024 The instrument has experienced a temperature overload.

11 Totalizer Overflow 2048 A totalizer has counted past its limit.

12 Memory Overflow 4096 The reading memory has overflowed.

13 Not Used 8192 (Always returns 0)

14 Not Used 16384 (Always returns 0)

15 Not Used 32768 (Always returns 0)

Bit #	Bit Name	Decimal Value	Definition
0	Voltage Overload	1	The instrument has experienced a voltage overload.
1	Current Overload	2	The instrument has experienced a current overload.
2	Not Used	4	(Always returns 0)
3	Not Used	8	(Always returns 0)
4	Not Used	16	(Always returns 0)
5	Not Used	32	(Always returns 0)
6	Not Used	64	(Always returns 0)
7	Not Used	128	(Always returns 0)
8	Not Used	256	(Always returns 0)
9	Res Overload	512	The instrument has experienced a resistance overload.
10	Temperature Overload	1024	The instrument has experienced a temperature overload.
11	Totalizer Overflow	2048	A totalizer has counted past its limit.
12	Memory Overflow	4096	The reading memory has overflowed.
13	Not Used	8192	(Always returns 0)
14	Not Used	16384	(Always returns 0)
15	Not Used	32768	(Always returns 0)

Once a bit is set, it remains set until cleared by reading the event register or the *CLS (clear status) command.
The *RST command has no effect on this register.

Return Format

The query reads the questionable event register and returns a decimal value which corresponds to the binary-weighted sum of all bits set in the register (see table above). For example, if bit 1 (decimal value = 2) and bit 9 (decimal value = 512) are set, this command will return "+514".

Example

The following command reads the questionable event register (bits 1 and 9 are set).

STAT:QUES?

Typical Response: +514

STATus:QUEStionable[:EVENt]?