Executing Coupled
Commands The list below identifies rules to follo w wh en exe c uting coupled commands:
•Coupled commands must be contiguous and executed in t he same
program statement. This done by placing the commands in the same
program line, or by suppressing the end-of-line termina tor until the
last coupled comman d ha s been sent.
To send multiple commands in a single line or in a single statement,
the commands are linked (as described previously) with a semicolon
(;) and a colon(:). For example:
OUTP2:IMP 50;OUTP2:ATT 6
or
OUTP2:IMP 50;
:OUTP2:ATT 6
In BASIC programs, the end-of-line (EOL) terminator is suppr e sse d
by placing a semicolon (;) following the quotation ma rk (" ) wh ich
closes the command string. For example:
OUTPUT 70910;"OUTP2:IMP 50;";
OUTPUT 70910;":OUTP2:ATT 6"
OUTPUT 70910;"OUTP2:STAT ON"
As shown, the first two lines are coupled together. The third line is
not a coupled command, therefore, the EOL terminator is not
suppressed on the second line.
•Commands not in the coupling group must either precee d or fo ll ow
commands in the coupling group.
•Un-coupled commands executed in a coupling group break the
coupling.
•Error checking occurs at the end of the coupling group.
•Hardware updates occur at the end of the coupling group.
Instrument and Programming Languages Programming the Agilent E1446A 2-3