252 Keysight E4980A/AL Precision LCR Meter
Overview of Remote Control
Trigger System
8-
In the “Waiting for Trigger” state, the E4980A/AL is triggered by sending
the *TRG command or the TRIGGER (GET) bus command, and
measurement results in one trigger sequence can be read without sending
the :FETCh? query command in the “Idle” state.
Therefore,
"*TRG" = ":TRIG;:FETCh?"
The following two sample programs show the difference between the :TRIG
command and the *TRG commands.
10 ASSIGN @Adrs TO 717
20 REMOTE @Adrs
30 OUTPUT @Adrs;"*RST;*CLS"
40 OUTPUT @Adrs;":TRIG:SOUR BUS"
50 OUTPUT @Adrs;":ABOR;:INIT"
60 OUTPUT @Adrs;":TRIG"
70 OUTPUT @Adrs;":FETC?"
80 ENTER @Adrs;A,B,C
90 END
10 ASSIGN @Adrs TO 717
20 REMOTE @Adrs
30 OUTPUT @Adrs;"*RST;*CLS"
40 OUTPUT @Adrs;":TRIG:SOUR BUS"
50 OUTPUT @Adrs;":ABOR;:INIT"
60 OUTPUT @Adrs;"*TRG"
70 ENTER @Adrs;A,B,C
80 END
Measurement State
In the “Measurement” state, the instrument waits for the sweep delay time to
elapse when it is specified and then starts a measurement cycle (sweep).
When the instrument finishes measurement, the trigger system behaves in one
of the following ways depending on the setting of the continuous initiation
mode.
If the continuous initiation mode is off:
The trigger system switches to the “Idle” state
If the continuous initiation mode is on:
The trigger system switches to the “Idle” state and then
automatically switches to the “Waiting for Trigger” state
A typical flowchart of data transfer using the trigger system is shown below.
When the E4980A/AL is in remote mode, measurements can be made only
on the screen displayed by pressing [Display Format].
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