HP 54501A Programming Reference Manual page 193

channel_num =
1,2,3,
or
4
function_num =
1
or
2
offset_arg =
0
to
±
voltage full scale
range_arg
=
full screen voltage
wmemory_num
=
1,2,3,
or
4
Figure
12-1.
Function Subsystem Commands Syntax Diagram (continued)
HP 54501A
Programming
Function Subsystem
12-3