Fluke PM6681 Stb?, Status Byte Query, Trigger, Command Reference, Status Byte Register 1 = true

	*STB?
PM6680B/81/85

Status Byte Query

Reads out the value of the Status Byte. Bit 6 reports the Master Summary Status bit (MSS), not the Request Service (RQS). The MSS is set if the instrument has one or more reasons for requesting service.

Returned Format:

<Integer> = the sum (between 0 and 255) of all bits that are true. See table below:

Status Byte Register (1 = true)
Bit	Weight	Name	Condition
7	128	OPR	Enabled operation status has occurred.
6	64	MSS	Reason for requesting service
5	32	ESB	Enabled status event condition has occurred
4	16	MAV	An output message is ready
3	8	QUE	The quality of the output signal is questionable
2	4	EAV	Error available
1	2		Not used
0	1	DREG0	Enabled status device event conditions have
			occurred
See also: If you want to read the status byte with the RQS bit, use serial poll.
Complies to standards:		IEEE 488.2 1987.

PM6680B/81/85

Trigger

*TRG

The trigger command *TRG starts the measurement and places the result in the output queue.

It is the same as:

:ARM:STARt:LAYer2:IMM; *WAI;:FETCh?

The Trigger command is the device-specific equivalent of the IEEE 488.1 defined Group Execute Trigger, GET. It has exactly the same effect as a GET after it has been received, and parsed by the counter.

However, GET is much faster than *TRG, since GET is a hardware signal that does not have to be parsed by the counter.

Example:

SEND￿ :ARM:START:LAY2:SOURCE ￿ BUS

SEND￿ :INIT:CONT ￿ ON

SEND￿ *TRG

READ￿ +3.2770536E+004

Type of Command:

Aborts all previous measurement commands if not *WAI is used.

Complies to standards: IEEE 488.2 1987.

Command Reference 9-131