LeCroy 9400A Manual page 158

I) The computer sets the 9400A into REMOTE.
2) The computer sets itself to Talker and
sends the command:
"SCREEN DUMP"
the 9400A to
Listener and
3) The computer organizes the transfer between the 9400A and the
plotter in one of the ways described below. The choice depends on
the computer GPIB controller software.
The computer tells the 9400A to talk and the plotter to listen. It
puts itself in Standby Mode while waiting for E0I that will be set
by the 9400A when the plot is finished.
or
The computer tells the 9400A to talk and the plotter to listen. It
puts itself in Listener mode while reading but NOT while storing the
plot data.
or
The computer tells the 9400A to talk and sets itself to Listener. It
reads AND stores the plot data. Afterwards it sets itself to Talker
and tells the plotter to Listen and sends the stored data to the
plotter.
Notice that a larger amount of data has to be stored: up to
50 kilobytes if all the traces are on.
4) The computer terminates the transfer by sending UNT (UNTalk) and UNL
(UNListen) and setting the 9400A into LOCAL.
8.15 Configuring the Parallel Polling (Option OP02 only)
Send the following sequence of GPIB commands to the 9400A:
- listen address of the 9400A.
- PPC (Parallel Poll Configure).
- PPE (Parallel Poll Enable).
in binary : 0 11 0 S P3 P2 P1
Where P3 to P1 represents DIO line number - 1
S = 1 if 1 must be sent while Service Request is active.
= 0 otherwise.
- UNT (UNTalk) and UNL (UNLlisten) non obligatory.
8-20
Basic 9400A Waveform Measurements
and Operating Procedures