Computer Interface Command Set, Sre? Stb? Trg Tst?

		Using the Computer Interface	4
		Computer Interface Command Set	4
	Table 4-8. Command and Query Reference (cont)

*SRE		Service Request Enable
		Sets the Service Request Enable Register to the given value.
		*SRE <value>
		<value> = (0 .. 255)

*SRE?

*STB?

*TRG

*TST?

If the value is greater than 255, a Command Error is generated. The value of bit 6 is ignored, since it is not used by the Service Request Enable Register.

Service Request Enable Query

Returns the integer value of the Service Request Enable Register, with bit 6 set to 0.

Read Status Byte Query

Returns the integer value of the Status Byte, with bit 6 as the master summary bit. Note that a serial poll returns bit 6 as the RQS message.

Trigger

When parsed, this command causes the instrument to request a Single Scan. If a scan is already in progress when this command is parsed, an additional scan is not executed.

Self Test Query

Causes an internal self test to be run, returning the result as an integer (representing the binary encoded value.) The self test does not require any local operator interaction and returns the instrument to the power-up state. The binary coding is:

	Bit	Binary Value	Error
	0	1	ROM test failed (bad CRS)
	1	2	External RAM test failed
	2	4	Internal RAM test failed
	3	8	Display selft test failed
	4	16	Display bad or not installed
	5	32	Instrument configuration corrupted.
	6	64	EEPROM instrument configuration bad
	7	128	EEPROM calibration data bad
	8	256	A/D bad or not installed
	9	512	A/D ROM test failed
	10	1024	A/D RAM test failed
	11	2048	A/D self test failed
	12	4096	Memory RAM test failed (2625A only).

*WAI	Wait-to-continue
	This command is accepted by Hydra, but has no effect. *WAI is required
	by the IEEE-488.2 standard, but is non-operational in Hydra.

4-27

2625A, 2620A specifications

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Fluke 2620A, 2625A user manual Computer Interface Command Set, Sre? Stb? Trg Tst?

Models: 2625A 2620A