Initiate State; Event Detection State - HP E4418B Programming Manual

Power Meter Remote Operation
Triggering the Power Meter

Initiate State

If the trigger system is on the downward path, it travels directly through
the initiate state without any restrictions. If the trigger system is on the
upward path, and INIT iate:CONTinuous is ON, it exits downwards to the
event detection state. If the trigger system is on the upward path and
INITiate:CONTinuous is OFF, it exits upwards to the idle state.

Event Detection State

The trigger source specifies which event causes the trigger system to
travel through the event detection state. The trigger source is set with the
following command:
TRIGger:SOURce
There are three possible trigger sources.
•
BUS
The trigger source is the HP-IB group execute trigger (<GET>), a
*TRG command, or the TRIGger:IMMediate command.
•
HOLD
Triggering is suspended. The only way to trigger the power meter
is to send TRIGger:IMMediate.
•
IMMediate
The power meter does not wait for any event and immediately
travels through the event detection state.
Querying the Trigger Source
The trigger source is queried with the following command:
TRIGger:SOURce
1-64 HP E4418B/E4419B Programming Guide