LeCroy 9400A

To "unconfigure" the parallel polling, send
GPIB commands to the 9400A:
- Listen address of the 9400A.
- PPD (Parallel Poll Disable).
in binary : 0 1 11 S P3 P2 P1
as mentioned above.
- PPU (Parallel Poll Unconfigure).
- UNT or UNL non obligatory.
Other sequences of commands are also possible.
the following sequence of
8-21
Basic 9400A Waveform Measurements
and Operating Procedures