BNC 1201 - 6 1/2 Digit Digital Multimeter - Manual (Page 71)

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immediate trigger.
TRIGger:SOURce IMMediate
C. Single Trigger Mode (accessible only through the front panel)
Definition
Single trigger mode takes one reading (or specified number of readings)
each time when user presses SINGLE key. (Please refer to 4.2.3 for
setting the number of samples on each trigger.) When the TRIG
annunciator on the display is lit, the meter is ready for next trigger event.
The single trigger mode is only available through the front panel
operations.
How to use Single Trigger
First select the measurement function, and then press SINGLE key on
the front panel to set the trigger mode. The location of the button is
shown with a red rectangle frame in Figure 4-10.
Figure 4-10
4.2.2 Trigger Source