Reference Multimeter and 8 ½ Digit Multimeter
Triggering Measurements
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Internal: Triggering is based on the level of the analog input for DCV, ACV, DCI,
ACI, Ohms and Digitize. Internal can be used for frequency (based on the
amplitude of the voltage or current) if the front or rear panel input terminals are
used. Triggering occurs each time the input signal reaches a certain level on
either the positive or the negative-going edge. The settable parameters are
Coupling (AC or DC), Level (as a % of Range, up to ±200% of Range), Slope
(+ or -), and Filter (On, Off). Filter On inserts a 70 kHz filter into the trigger signal
path. See the screen below.
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Timer: Triggers at a pre-set rate. If Count is greater than one, the Timer setting
applies to reading two onwards. This allows Timer to space readings with a
specific time interval, where the first reading comes “immediately” and
subsequent readings are at the specified Timer interval. See Examples of Using
the Triggering Subsystem. Timer controls the start of acquisitions and is not the
delay between the end of one acquisition and the start of another (see Delay).
The other rows of the Trigger Setup menu are:
Triggers/Arm (Count): The default setting is one and is the number of readings
per Arm event in the Trigger layer. Count determines how many times the
triggering process circulates around the Trigger Layer before exiting back
upwards towards the Initiate layer.
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