Agilent Technologies N3280A manual Field Information, Example

6 – Language Dictionary

*IDN?

This query requests the dc source to identify itself. It returns a string composed of four fields separated by commas.

Query Syntax	*IDN?
Returned Parameters	<AARD>	Field	Information
		Agilent Technologies	Manufacturer
		xxxxxA	model number followed by a letter suffix
		0	zero or the unit's serial number if available
Example		<A>.xx.xx	Revision levels of firmware.
	AGILENT TECHNOLOGIES,N3280A,0,A.00.01

*OPC

This command causes the instrument to set the OPC bit (bit 0) of the Standard Event Status register when the dc source has completed all pending operations. (See *ESE for the bit configuration of the Standard Event Status register.) Pending operations are complete when:

Kall commands sent before *OPC have been executed. This includes overlapped commands. Most commands are sequential and are completed before the next command is executed. Overlapped commands are executed in parallel with other commands. Commands that affect output voltage, current or state, relays, and trigger actions are overlapped with subsequent commands sent to the dc source. The *OPC command provides notification that all overlapped commands have been completed.

Kall triggered actions are completed

*OPC does not prevent processing of subsequent commands, but bit 0 will not be set until all pending operations are completed.

*OPC? causes the instrument to place an ASCII "1" in the Output Queue when all pending operations are completed. Unlike *OPC, *OPC? prevents processing of all subsequent commands. It is intended to be used at the end of a command line so that the application program can then monitor the bus for data until it receives the "1" from the dc source Output Queue.

Command Syntax	*OPC
Parameters	None
Query Syntax	*OPC?
Returned Parameters	<NR1> 1
Related Commands	*OPC *TRIG *WAI

*OPT?

This query requests the dc source to identify any options that are installed. Options are identified by number. A 0 indicates no options are installed.

Query Syntax *OPT?

Returned Parameters <AARD>

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