To Next Page

To Previous Page

Remote Operation

4-3

Character Data Formats 4.2.3

For command statements, the <NRf+> data format permits entry of required characters. For

query statements, character strings may be returned in either of the forms shown in the

following table. It depends on the length of the returned string.

Table 4-4

Symbol

Character Form

crd

Character Response Data. They permit the return up to 12 characters.

aard

Arbitrary ASCII Response Data. They permit the return of undelimited 7-bit

ASCII. This data type is an implied message terminator (refer to Separators

and Terminators).

Arbitrary Block Data Format 4.2.4

The arbitrary block data returned by query command may take either of the following forms:

<DLABRD> Definite Length Arbitrary Block Response Data:

The <DLABRD> is formatted as:

#<x><yy...y><byte1><byte2><byte3><byte4>…<byteN><RMT>

Where,

<x> is the number of characters in <yy…y>.

<yy…y> is the number of bytes to transfer.

For example, if <yy…y> = 01024, then <x> = 5 and <byte1><byte2><byte3>…<byte1024>

<ILABRD> Indefinite Length Arbitrary Block Response Data:

The <ILABRD> is formatted as:

#<0><byte1><byte2><byte3><byte4>…<byteN><RMT>

Separators and Terminators 4.2.5

In addition to keywords and parameters, GPIB program statements require the following:

Data Separators:

Data must be separated from the previous command keyword by a space. This is shown in

examples as a space (CURR 3) and on diagrams by the letters SP inside a circle.

Keyword Separators:

Keywords (or headers) are separated by a colon (:), a semicolon (;), or both. For example:

 LOAD:SHOR ON

 MEAS:CURR?;VOLT?

 CURR:STAT:L1 3;:VOLT:L1 5

Chroma 63200A Series User Manual

Questions and Answers: