Agilent Technologies 4294A Service Manual download pdf (Page 464)

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464 Chapter 16

GPIB Command Reference

:PROGram:CATalog?

Instrument BASIC control commands

This section describes the commands used to control Instrument BASIC from the external

controller. The commands described here cannot be executed using Instrument BASIC.

:PROGram:CATalog?

Syntax :PROGram:CATalog?

Description Reads out the program name defined with the “:PROGram[:SELected]:NAME” command

on page 466. The 4294A provides no practical function. (Query only)

Corresponding

key

No front panel key is available to execute this function.

:PROGram[:SELected]:DEFine

Syntax :PROGram[:SELected]:DEFine <block>

:PROGram[:SELected]:DEFine?

Description Downloads an HP Instrument BASIC program from the external controller to the 4294A. If

the size of the downloaded program exceeds available space in the Instrument BASIC

program workspace, lines of the program sent before the overflow are stored, and program

lines sent after the overflow are ignored.

Executing this command as a query uploads the Instrument BASIC program on the 4294A

to the external controller. Uploading is available when the status of the program is PAUSE

or STOP.

Parameters

Arbitrary length block data consists of a header part and a following data part (program to

be sent). The header part has 2 formats as follows.

#0 Indicates that the size of the data part is not defined. In this case, after

sending the header part, data of an arbitrary size is sent. After all the

data is sent, send an end signal (<LF>+EOI) (for example, in the case

of HP BASIC, send END in an OUTPUT statement) to finish sending

the data. Transmission in this format can be executed only from GPIB,

but cannot from LAN.

#NMM...M Defines the size of the data part (N specifies the number of digits of

the number to indicate the size (the MM...M part); MM...M specifies

the size). In this case, data of the defined size is sent, following the

header part.

Query response {block}<newline><^END>

Reads out a program in an arbitrary length block in which the header part defines the data

size and the data part follows it.

Corresponding

key

No front panel key is available to execute this function.

<block>

Description Program data of arbitrary length block

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