Keysight E4980A - Page 247

Keysight E4980A/AL Precision LCR Meter 247
Overview of Remote Control
Trigger System
There are three kinds of trigger commands: the *TRG common command, the
TRIGGER (GET) bus command, and the :TRG GPIB command. These
commands are classified into two types in this trigger system. (Refer to Figure
8-13).
Figure 8-13 Trigger system and trigger commands
1. :TRIG GPIB command
When the trigger system is either in the “Waiting for Trigger” or “Idle” state,
the E4980A/AL is triggered by sending the :TRIG command. When reading
measurement results via a controller in the “Idle” state, you need to use the
:FETch? query command.
2. *TRG command or TRIGGER (GET) bus command
External trigger 
(External)
The instrument is triggered when a trigger signal is input
through the external trigger terminal, the handler I/O port,
or the scanner I/O port.
Bus trigger
(Bus)
The instrument is triggered when the *TRG command or
TRIGGER (GET) bus command is issued.
Manual trigger
(Man)
The instrument is triggered when you press [Trigger] on
the front panel.
Trigger Source How instrument is triggered
When the sweep averaging function is on, even if the instrument is set so
that the trigger is detected for each sweep, the sweep is performed
repeatedly until the sweep averaging for a specified number of times
finishes. This is done by triggering the instrument once at the beginning or
executing the : TRIG command.
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