Setting The Trigger Delay; Setting The Number Of Samples - Fluke 8845A User Manual

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8845A/8846A
Users Manual
each trigger or pulse received, the Meter will take the specified number of measurements
after the specified trigger delay.
The trigger key is disabled whenever the Meter is in Remote mode.
To set up for an external trigger:
1. Press L.
2. Press the soft key labeled TRIGGER.
3. Press the soft key labeled EXT TRIG.

Setting the Trigger Delay

A Meter measurement can be delayed a set amount of time after receiving a trigger. This
feature may be useful when you need to wait for a signal to settle before measuring it.
When a trigger delay is specified, that delay is used for all functions and ranges.
To set a trigger delay:
1. Press L.
2. Press the soft key labeled TRIGGER.
3. Press the soft key labeled TRIG DELAY.
4. To select a specific digit to adjust, press either <-- or -->.
5. With the desired delay set, press the soft key labeled ENTER.

Setting the Number of Samples

Normally, the Meter takes one measurement (or sample) each time a trigger is received if
in "wait-for-trigger" state. However, you can set the Meter to take a specified number of
measurements for each trigger.
To set the number of samples per trigger:
1. Press L.
2. Press the soft key labeled TRIGGER.
3. Press the soft key labeled # SAMPLES.
4. To select a specific digit to adjust, press either <-- or -->.
3-16
The Ext Trig soft key label will remain highlighted to indicate the Meter is in
external trigger mode. To return to auto trigger mode, press EXT TRIG again.
If the Meter does not receive a trigger for a second or two, a TRIG annunciator
illuminates indicating the Meter is waiting for a trigger. Each press of the trigger key
W or a positive going edge on the trigger port will initiate a measurement.
The trigger delay can be set between 0 and 3600 seconds with a resolution of 10
microseconds.
With the desired digit selected, press the soft key labeled -- to decrement the digit
or ++ to increment the digit.
The number of samples per trigger can be set between 0 and 59999 seconds.
Note

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