IFR FM/AM-1200A Operation Manual page 143

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[NOTE\
The Question Mark ("?")will
be
accepted at any
time and ignored unless it follows a command.
This allows the user to continually interrogate
the output buffer when waiting for a measure-
ment.
The Col on (":") is a general delimiter and may
be used after the Period or Question Mark.
Care
must
be
exercised in using the Period or
Question Mark at the end of a command as they
may change the interpretation of that command.
The following ASCII Characters will terminate the output command or
series of commands:
ASCI I Carriage Ret urn (OD) - CR
ASCII Line Feed (OA) - LF
NULL Character ( 0) - N L
When the FM/AM-1200S/A is the assigned talker, the EO! line will be set
when a line feed (OA) is sent.
lNOTE\
The user's GPIB controller must be programmed to
expect an ASCII line feed (OA) character as the
input string termination.
5-12-8 ASCII OUTPUT COMMAND DATA FORMAT
All spaces will
be ignored.
Below are some examples of commands which
are valid.
RFF = 100:
RFF?
RFFl
=
10:
The above commands set the Reply Identifier Flag which caused the com-
mand label following "RID=ON" to be attached to the response.
5-12-g RETURN DATA FORMAT
The returned data format convention is similar to the Output Command
Data Format in that all returns will
be packed together and separated by
ASCII Colon(":") delimiters.
The number of responses returned is
determined by the number of commands transferred in one block.
If the
number of responses required causes the internal response buffer to
overflow by being larger than 128 bytes, only the responses up to the
most recent delimiter will
be returned.
5-26
03

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