Agilent Technologies 8566B Operating And Programming Manual page 387

Output Parameter
The OP command returns parameter values, Pl and P2, which represent the dimensions of the lower left, and
upper right analyzer display. The values returned represent X and Y in display units.
A typical response to OP is O,O, 1023,1023;
0 , 1 0 2 3 , 1 0 2 3
\ \
278 Programming