Fluke Wavetek-Datron 395 - Trigger

4.4.17 TRIGGER
Many Model 395 operations require the setup of trigger parameters. The Madel 395
provides a Trigger Input screen which allows you to select internai source (programmable
rate), externaI source (Trig In connector) with programmable trigger slope and polarity,
or manual source
(MAN TRIG key). Model395 operations are affected by the trigger
input conditions are sequence advance trigger, triggered sweep, and triggered and gated
modes.
In the gated mode, the Madel 395 produces a continuous output with external trigger
selected and slope set ta negative as long as the quiescent external triggerJnput is below
the trigger level.
To set up the trigger input, press the TRIG IN key to display the Trigger Input screen
(figure 4-110).
<> source: external
~ slope : positive
(> level : +O.OOV
<> period: 1.0000 ms
Figure 4·110. Trigger Setup Sereen
Source
Press FI to toggle between internaI, external, and manual trigger sources. When
"internaI" is selected, the Model 395 uses its internaI trigger generator as the trigger
source. Trigger rate is programmed using "period." Siope and Ievei have no affect
on
internaI trigger. However, when internally triggered, the waveform can be triggered by
pressing
MAN TRIG key or sending remote trigger commands (*TRG etc. - refer ta
section 5).
When "external" is selected, a signal at the Trig
In connectortriggers the generator. The
trigger slope and
Ieve1 parameters affect the trigger conditions for the externai signal.
When externally triggered, the wavefarm can also he triggered by pressing
MAN TRIG
key
or sending remote trigger commands (*TRG etc. refer to section 5).
When "manual" is selected, pressing the
MAN TRIG key or sending remote trigger
commands (*TRG etc. refer to section 5) triggers the waveform.
Siope
Press F2 to toggle between positive trigger siope and negative trigger slope. Siope sets
the triggering edge
of the externai trigger signal.
Level
Press F3 to program the trigger Ievel. Use the keypad or the knob to change the value.
The trigger Ievel can
he programmed hetween -10.0 V and +10.0 V with 0.1 V resolution.
Period
Press F4 to program the triggerrate of the internal trigger generator. Use the keypad or
knob to change the value. Trigger rate can be programmed between
200 ns and 10000
seconds.
4-76 Front Panel Operation Reference
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