HP 8509A Programming Manual page 32

Operation Complete
10 OUTPUT 729; "JONES:ABSOLUTE" END
20 OUTPUT 729;
"JONES:CALIBRATE;*OPC?" END
40 DISP "Measuring"
50 ENTER 729; String$
60 DISP "DONE"
70 END
ON TIMEOUT
5-4 Basic Instrument Control
*OPC?
DONE
ENTER
*OPC?
Set up for an absolute measurement.
Conduct the thrupath calibration and OPC the
thrupath calibration measurement.
The program will halt at this point until the HP
8509 completes the measurement and issues a 1.
Measuring
DONE
*OPC?