Array electronic 3750A, Manual

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Chapter II Functions & Features
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ARRAY
The load has three triggering sources: BUS, EXTernal and HOLD.
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The BUS mode: GPIB <GET> signal or the * TRG command is the trigger source.
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The EXTernal Mode: Choose the trigger input terminal of the load as the trigger source. The
input signal at the external trigger input terminal is TTL, and the falling edge signal is
triggered.
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The HOLD: Only the remote command TRIGger[:IMMediate] can be used as the trigger
source. At this time, all other triggering sources including * TRG become invalid.
Notes: The TRIGger:IMMediate command can be used in all three triggering modes. The
triggering sources can only be selected via the remote command TRIGger:SOURce BUS |
EXTernal | HOLD. Please do the trigger initial operation to the load before triggering
operation, otherwise any trigger will be ignored.
2.7 Input Control
2.7.1 ON/OFF of ELoad Input
The input of the load can be turned on/off via key, or via the remote command: INPut ON
| OFF. If the load’s input is in OFF state, press key to turn on the input, and the yellow
indicator turns to green , and the LCD displays ON. If the load’s input is in ON state,
press key to turn off the input, and the green indicator turns to yellow .
Turning on/off the input does not affect the programmed settings.
In local control, if the input is ON, the load’s state can not be switched directly among the basic
modes, the transient operation, the list operation and so on states. When the load switches from
one operation to another operation, the load will be turn off automatically.
2.7.2 Von Point/Von Latch
When the external input voltage is lower than the Volt Start Point, the load will not be able even
though the input is ON. Only when the external input voltage reaches or exceeds the Von Point,
the load will start to work. The default Von Point is 0V.