AEMC OX III Series User Manual page 68

Oscilloscope Mode (cont'd)
Parameters
Main
Source
Coupling
Edge
Level
Noise reject
Holdoff
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Selection of the "Trigger Parameters".
Trigger on edge
selects a channel as a trigger source.
Selection of the filter for the main trigger source:
AC coupling (10 Hz to 200 MHz):
AC
blocks the DC component of the signal
DC coupling (0 to 200 MHz):
DC
allows the entire signal through
Rejection of source signal frequencies < 10 kHz:
LF Reject
facilitates observation of signals with a DC
component or an unwanted low frequency
Rejection of source signal frequencies > 10 kHz:
HF Reject
facilitates observation of signals with high-frequency
noise.
The symbol used to indicate the curve trigger level on the curve also indicates the
coupling:
DC
AC
LF Reject
HF Reject
Selection of the trigger gradient:
+ ascending trigger edge
descending trigger edge
-
The selected trigger edge is indicated in the status area.
2.04V Adjustment of the trigger level with the stylus on the scroll bar.
The trigger level is entered into the current value display area after modification.
Fine adjustment is possible.
No: hysteresis ≈ 0.5 div.
Yes: introduces a hysteresis of ≈ 1.5 div.
108µs allows:
• disabling of the trigger for a predefined period
• stabilization of the trigger on pulse trains.
Double-tapping in this field displays a virtual numeric keypad which can be used
to directly input the value.
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