Tektronix TPS2000 Series User Manual page 213

Edge Trigger
Use Edge triggering to trigger on the edge of the oscilloscope input
signal at the trigger threshold.
Options
Edge
Source
Slope
Mode
Coupling
* Available only on a 4-channel oscilloscope.
TPS2000 Series Digital Oscilloscope User Manual
Settings Comments
With Edge highlighted, the rising or falling
edge of the input signal is used for the
trigger
CH1 Select the input source as the trigger
CH2 signal; see page 9--39
CH3*
CH4*
Ext
Ext/5
Ext/10
Rising Select to trigger on either the rising or
Falling falling edge of the signal
Auto Select the type of triggering; see page
Normal 9--38
AC Selects the components of the trigger
DC signal applied to the trigger circuitry; see
Noise Reject page 9--40
HF Reject
LF Reject
Reference
9- 37