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command (*TRG/.TRIGger). The trigger becomes effective only when the load remains at transient
low level. Each trigger leads to one pulse. In the duration of rising edge, transient high level, and
falling edge, any trigger will be ignored.
For example: assume that the CCH range is active, and the input is in OFF status, then the
transient parameters should be set as follows:
Press key to enter into transient operation;
Press
key to open transient operation menu;
Set the following parameters in transient operation menu:
LevelL : 5.000A
LevelH : 10.000A
TimeL : 0.50ms
TimeH : 0.50ms
TimeR : 0.10ms
TimeF : 0.10ms
Mode : Puls
Then press
key to turn on the input;
Send the command to the load:INIT
Or via remote command to set:
SCPI Command Description
TRIG:SOUR EXT Selects the external trigger input
TRAN ON Enables transient operation
CURR:LOW 5 Sets transient current low level to 5A
CURR:HIGH 10 Sets transient current high level to 10A
TRAN:HTIM 500us Sets transient high level time to 500us
TRAN:RTIM 100us Sets the time for transient rising edge to 100us
TRAN:FTIM 200us Sets the time for transient falling edge to 200us
TRAN:MODE PULS Sets pulse trigger operating mode
INPUT ON Turns on the input
INIT Initialize the trigger
Get the trigger by receiving an external trigger signal. Figure 2-7 shows the current waveform of
the load before it is triggered and after it has been triggered respectively: the electronic load starts its
operation at the transient low level (5A) when the input is turned on. For each trigger, the load current
reaches the high level (10A) after 100us duration of rising edge, and remains at 10A for 500us. Then
after 200us duration of falling edge, the current returns to the transient low level (5A).