User manual

Remote Control
R&S
®
RTO
394User Manual 1316.0827.02 ─ 06
Command Effect on the instrument
LLO (Local Lockout) The LOC/IEC ADDR key is disabled.
SPE (Serial Poll Enable) Ready for serial poll.
SPD (Serial Poll Disable) End of serial poll.
PPU (Parallel Poll Unconfig-
ure)
End of the parallel-poll state.
*) IFC is not a real universal command, it is sent via a separate line; however, it also affects all instruments
connected to the bus and does not require addressing
Addressed Commands
Addressed commands are encoded in the range 00 through 0F hex. They only affect
instruments addressed as listeners.
Command Effect on the instrument
GET (Group Execute Trigger) Triggers a previously active instrument function (e.g. a sweep). The
effect of the command is the same as with that of a pulse at the
external trigger signal input.
GTL (Go to Local) Transition to the "local" state (manual control).
GTR (Go to Remote) Transition to the "remote" state (remote control).
PPC (Parallel Poll Configure) Configures the instrument for parallel poll.
SDC (Selected Device Clear) Aborts the processing of the commands just received and sets the
command processing software to a defined initial state. Does not
change the instrument setting.
LAN Interface Messages
In the LAN connection, the interface messages are called low–level control messages.
These messages can be used to emulate interface messages of the GPIB bus.
Command Long term Effect on the instrument
&ABO Abort Aborts processing of the commands just received.
&DCL Device Clear Aborts processing of the commands just received and sets
the command processing software to a defined initial state.
Does not change the instrument setting.
&GTL Go to Local Transition to the "local" state (manual control).
&GTR Go to Remote Transition to the "remote" state (remote control).
&GET Group Execute Trigger Triggers a previously active instrument function (e.g. a
sweep). The effect of the command is the same as with that
of a pulse at the external trigger signal input.
&LLO Local Lockout Disables switchover from remote control to manual control
by means of the front panel keys.
Basics