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Both Single and Ext modes can be buffered to a trigger, which means that if you
press [Single] or receive an external trigger while making a series of
measurements, the instrument will complete the series of measurements and
then immediately start a new series of measurements based on the trigger.
If multiple [Single] or external triggers are emitted during a series of measurements,
all of them will be received after the first trigger is dropped.
The [Acquire] menu can also configure the delay that occurs before each
measurement, regardless of the trigger mode (Auto, Single, or Ext).
This can be
automatic (select the delay based on the steady time of the digital multimeter) or
manual (user specified delay time).
Finally, the
Run/Stop
and
Single
keys on the front panel. In auto trigger mode, press
[Run/Stop]
to Stop and resume measurement, and press [Single] to switch the
instrument to Single trigger mode. In Single and Ext modes, press [Run/Stop] to Stop
the reading if it is in progress, or switch this mode to "Auto" if it has stopped.
Trigger delay and multiple sampling
The instrument can insert a trigger delay between the occurrence of the trigger and
the first measurement. When using AUTO (Delay Auto soft key), the instrument will
automatically determine the delay according to the function, range and integral time.
For more information, see Automatic Trigger Delays. However, for measurements
using long cables and measurements of high capacitance or high impedance signals,
you may need to manually set a delay longer than the automatic delay (the Delay
Man soft key) to make the input stable, and then make a burst measurement.
If you configure the instrument to sample multiple times per Trigger (Samples/Trigger
soft key), in all cases, the first sample will be taken after a Trigger delay. In addition,
the sampling time depends on whether you choose to immediately sample(Sample
Immediate soft key, default) or use the sample timer (Sample Timer soft key) as
shown below.
Sample Immediate - After triggering, the first Sample will be taken after a
trigger delay time, and then the trigger delay time will be inserted between
successive samples:
In this configuration, timed sampling is not deterministic because a delay time is
inserted after each sampling is completed. The actual time required to perform each
sample is related to the integration time and the automatic range adjustment time.
