Discrete

Selects from a finite number of values. These parameters use mnemonics to represent each valid setting. An example is the TRIGger[:STARt]:SOURce <source> command where source can be BUS, ECLTrg0, ECLTrg1,EXTernal1, EXTernal2, ...

String

STRING PROGRAM DATA parameters are enclosed with single quotation marks (’) or do uble quotation marks ("). Examples of string program data parameters are those associated with the OUTPut...FEED commands:

OUTPut:ECLTrg<n >:FEED <source >

OUTPut:EXTernal[1]:FEED <source >

OUTPut:TTLTrg<n >:FEED <source >

Some of the <source > parameters include:

"EXTernal[1]"

"SENSe[12]:ROSCillator"

"SENSe:SWEep:OFFSet:POINts"

As an example, the syntax for sending this type of command in an HP BASIC program is:

OUTPUT 70905;"OUTP:ECLT0:FEED ’EXT’"

or

OUTPUT 70905;"OUTP:ECLT0:FEED ""EXT"""

In a C language program, the syntax is:

"OUTP:ECLT0:FEED ’EXT’"

or

"OUTP:ECLT0:FEED \"EXT\""

Arbitrary Block Program Data

This parameter type is used to transfer a block of data in the form of bytes. The block of data bytes is preceded by a header which indicates the number of data bytes which follow. The syntax of the block header is as follows:

Chapter 4

Command Reference 181

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HP E1429A manual OUTPECLT0FEED ’EXT’ OUTPECLT0FEED \EXT