User Manual

Functional Description
28
b) from the screen
1. Edge
Selection of a channel as triggering source
 E.g. CH4  Triggering source
Selection of the filter of the main triggering source:
AC AC coupling (10Hz to 300MHz):
blocks the DC component of the signal.
DC DC coupling (0 to 300MHz):
passes the whole signal.
LF Reject Rejection of source signal frequencies < 10kHz:
facilitates the observation of signals having a DC
component or an undesirable low frequency.
HF Reject Rejection of source signal frequencies >10kHz:
facilitates the observation of signals containing high-frequency noise.
The symbol used to indicate the triggering level on the curve also indicates the
coupling:
DC
AC
LF Reject
HF Reject
Selection of the triggering slope:

positive-going triggering slope Rise edge +

negative-going triggering slope Fall edge -
The triggering slope selected is indicated in the status zone.
0.00V Adjustment of the triggering level
The triggering level is indicated in the zone displaying the current value, after
modification. It can be adjusted finely.
No Hysteresis ≈ 0.5 div.
Yes Hysteresis ≈ 1.5 div.
100 µs:

disables triggering for a preset duration

stabilizes triggering on pulse trains.
Pointing to this field opens on screen a virtual digital keypad for direct entry of the
value.