Fluke 190 [68/159] Triggering on external waveforms

Fluke 19xC-2x5C

Users Manual

Triggering on External Waveforms

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. See Figure 31.

In this example you continue from the Trigger on Edges

example. To choose the external signal as trigger source,

continue as follows:

Display the TRIGGER (On Edges)

key labels.

Select Ext (external) edge 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:

Figure 31. External Triggering

Select 1.2V under the Ext LEVEL

label.

From this point the trigger level is fixed and is compatible

with logic signals.