HP 8163A Programming Manual page 154

Programming Examples
How to Co-ordinate Two Modules
errStatus = viPrintf(vi,"SENS1:CHAN1:POW:RANGE:AUTO 1\n");
checkError(vi,errStatus);
/* change the power unit of the power meter to dBm */
errStatus = viPrintf(vi,"SENS1:CHAN1:POW:UNIT 0\n");
checkError(vi,errStatus);
/*set the averaging time for measuring to 20 ms,
therefore no timeout needs to implemented */
errStatus = viPrintf(vi,"SENS1:CHAN1:POW:ATIME 0.02\n");
checkError(vi,errStatus);
/* set the attenuation to zero for maximum power */
errStatus = viPrintf(vi,"SOURCE2:CHAN1:POW:ATT 0.0\n");
checkError(vi,errStatus);
/* set the reference mode to the internal one,
which is now the last displayed value */
errStatus = viPrintf(vi,"SENS1:CHAN1:POW:REF:STATE:RATIO TOREF,0\n");
checkError(vi,errStatus);
/* set reference measuremant state to absolute units */
errStatus = viPrintf(vi,"SENS1:CHAN1:POW:REF:STAT 1\n");
checkError(vi,errStatus);
/* turn laser on */
errStatus = viPrintf(vi,"SOURCE2:CHAN1:POW:STATE 1\n");
checkError(vi,errStatus);
/*ask for command completion */
do
{
errStatus = viQueryf(vi,"*OPC?\n","%d",&cmdDone);
checkError(vi,errStatus);
} while (!cmdDone);
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