Fluke 9640A Series, Instruction Manual

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9640A
Instruction Manual
4B-10
specifications, are only a notation convention to ease the distinction between longform
and shortform.
Syntax of Response Messages
The response of a SCPI instrument to a query (response message unit) consists of one or
more parameters (data elements) as shown in Figure 4B-9. There is no header returned.
,
<P arameter>
ead108f.eps
Figure 4B-9. Syntax of a Response Message Unit
If there are multiple queries in a program message, the instrument groups the multiple
response message units together in one response message according to the syntax shown
in Figure 4B-10.
<Response Message Unit>
,
ead109f.eps
Figure 4B-10. Syntax of a Terminated Response Message
The response message terminator (rmt) is always
NL^END
, where:
NL^END
is <new line> code (equal to <line feed> code = ASCII 10 decimal) sent
concurrently with the
END
message. The
END
message is sent by asserting the
EOI
line
of the GPIB bus.
Responses:
A SCPI instrument always sends its response data in shortform and in capitals.
Example:
You program an instrument with the following command:
SEND=>
:ROSCillator:SOURce EXTernal
Then you send the following query to the instrument:
SEND=>
:ROSCillator:SOURce?
The instrument will return:
READ<=
EXT
response in shortform and in capitals.