GRAPHTEC GL900 - Page 63

Settings and Measurement
3-31
About Level and Edge Operations
In the level operation, the trigger conditions are assumed to be met only if they are met when the
START key is pressed (after the timer reaches the set time).
In the edge operation, the trigger conditions are assumed NOT to be met even if they are met when
the START key is pressed (after the timer reaches the set time).
The trigger conditions are assumed to be met only if they are no longer met and then are met again.
Example) If the mode is Rising
About the Trigger and Alarm Operations
H : A trigger/alarm is generated when the signal input rises to (or
exceeds) the specified level.
L : A trigger/alarm is generated when the signal input falls to (or falls below) the
specified level.
Win In : Used to specify the upper and lower limits for each channel. When the signal
level goes within (or is within) either limit, a trigger/alarm is generated.
Win Out : Used to specify the upper and lower limits for each channel. When the signal
level goes outside (or is outside) either limit, a trigger/alarm is generated.
The START key is pressed here.
Trigger generation area
Setting level
An edge that
exceeds the
setting level
is needed.
Measurement starts here
in the edge operation.
Measurement immediately
starts in the level operation.
CH.1
Trigger (alarm) generated area
Set level
Measurement starts (alarm generated)
CH.1
Trigger (alarm) generated area
Set level
Measurement starts (alarm generated)
CH.1
Measurement starts (alarm generated)
Trigger (alarm) generated area
Set upper level
Set lower level
CH.1
Measurement starts (alarm generated)
Set lower level
Set upper level
Trigger (alarm) generated area