Fluke 8845A FE 8845A & 8846A Users Manual - Page 78

Setting the Trigger Mode, Setting a Trigger Delay, Setting Number of Samples per Trigger, TRIGGER

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8845A/8846A Users Manual Setting the Trigger Mode The Meter's measurement cycle can be initiated either by the internal measurement circuit or by external stimulus. To select the trigger mode: 1. With the measurement setup menu displayed, press the soft key labeled TRIGGER. If EXT TRIG is highlighted, the Meter's measurement cycle is triggered externally either through the external trigger jack on the rear panel, or the trigger key on the front panel. If EXT TRIG is not highlighted, then the Meter's measurement cycle is triggered automatically by its internal circuitry. 2. Press the soft key labeled EXT TRIG to toggle between internal and external triggering. Setting a Trigger Delay When in external trigger mode, the Meter is capable of delaying the start of the measurement cycle after the trigger stimulus is sensed by up to 3600 seconds. To set a trigger delay: 1. With the measurement setup menu displayed, press the soft key labeled TRIGGER. 2. Press the soft key labeled TRIG DELAY. 3. Use the soft keys to set the trigger delay. Select the digit in the value by pressing either . With the desired digit selected, press the soft key labeled -- to decrement the digit or ++ to increment the character. 4. Press ENTER. Setting Number of Samples per Trigger When in external trigger mode, the Meter will take between 1 and 50,000 measurements for each trigger received. To set the number of samples, or measurements the Meter will take for each external trigger received: 1. Press Lto display the measurement setup menu. 2. Press the TRIGGER soft key. 3. Press the soft key labeled # SAMPLES. 4. Use the soft keys to set the number of samples between 1 and 50,000. Select the digit in the value by pressing either . With the digit selected, press the soft key labeled -- to decrement the digit or ++ to increment the character. 5. Press ENTER. 4-16

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8845A/8846A
Users Manual
4-16
Setting the Trigger Mode
The Meter’s measurement cycle can be initiated either by the internal measurement
circuit or by external stimulus.
To select the trigger mode:
1.
With the measurement setup menu displayed, press the soft key labeled
TRIGGER
.
If
EXT TRIG
is highlighted, the Meter’s measurement cycle is triggered externally
either through the external trigger jack on the rear panel, or the trigger key on the
front panel. If
EXT TRIG
is not highlighted, then the Meter’s measurement cycle
is triggered automatically by its internal circuitry.
2.
Press the soft key labeled
EXT TRIG
to toggle between internal and external
triggering.
Setting a Trigger Delay
When in external trigger mode, the Meter is capable of delaying the start of the
measurement cycle after the trigger stimulus is sensed by up to 3600 seconds.
To set a trigger delay:
1.
With the measurement setup menu displayed, press the soft key labeled
TRIGGER
.
2.
Press the soft key labeled
TRIG DELAY
.
3.
Use the soft keys to set the trigger delay.
Select the digit in the value by pressing either
<--
or
-->
.
With the desired digit selected, press the soft key labeled
--
to decrement the digit
or
++
to increment the character.
4.
Press
ENTER
.
Setting Number of Samples per Trigger
When in external trigger mode, the Meter will take between 1 and 50,000 measurements
for each trigger received.
To set the number of samples, or measurements the Meter will take for each external
trigger received:
1.
Press
L
to display the measurement setup menu.
2.
Press the
TRIGGER
soft key.
3.
Press the soft key labeled
# SAMPLES
.
4.
Use the soft keys to set the number of samples between 1 and 50,000.
Select the digit in the value by pressing either
<--
or
-->
.
With the digit selected, press the soft key labeled
--
to decrement the digit or
++
to
increment the character.
5.
Press
ENTER
.