B&K Precision 2552-2559 - Manual - Manual (Page 50)

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signal to the EXT TRIG BNC and set the trigger source to Ext or
Ext/5.
• “FORCE Button: Use the FORCE button to complete the current
waveform acquisition whether the oscilloscope detects a trigger or
not. This is useful for SINGLE acquisitions and Normal trigger
mode.
Signal Source
You can use the Trigger Source options to select the signal that the
oscilloscope uses as a trigger. The source can be any signal connected to a
channel BNC, to the EXT TRIG BUS, or the AC power line (available only
with Edge Trigger).
Trigger Type
The scopes have five trigger types: Edge, Video, Pulse, Slope, and
Alternate.
Edge Trigger
Use Edge triggering to trigger on the edge of the oscilloscope input signal
at the trigger threshold.
Table 14 - Edge Trigger Function Menu
Option Setting Description
Type Edge With Edge highlighted, the rising or falling edge
of the input signal is used for the trigger.
Source CH1
CH2
*CH3
*CH4
Triggers on a channel whether or not the
waveform is displayed.