Triggering On External Waveforms (Models 190-Xx2) - Fluke 190 Series II User Manual

Fluke 190 series II
Users Manual
Triggering on External Waveforms
(models 190-xx2)
Use external triggering when you want to display
waveforms on inputs A and B while triggering on a third
signal. You can choose external triggering with automatic
triggering or with edge triggering.
1 Supply a signal to the red and black 4-mm
banana jack inputs.
In this example you continue from the Trigger on Edges
example. To choose the external signal as trigger source,
continue as follows:
2 Display the
TRIGGER
key labels.
3 Select Ext (external) edge trigger.
F1
64
(On Edges)
TRIGGER
Observe that the key labels at the bottom of the screen
have been adapted to allow selection of two different
external trigger levels: 0.12 V and 1.2 V:
4 Select 1.2V under the Ext LEVEL
F3
label.
From this point the trigger level is fixed and is compatible
with logic signals.