GRAPHTEC midi LOGGER GL220 User Manual page 63

Level and Edge operations
In the Level operation, a trigger is assumed to be generated if the trigger conditions are met
when the START key is pressed.
In the Edge operation, a trigger is not assumed to be generated even if the trigger conditions are
met when the START key is pressed.
A trigger is assumed to be generated when the trigger conditions, after not being met, are met
again.
* A trigger is still assumed to be generated even if the trigger conditions are met once in the
Edge operation and then are no longer met.
Example: Rising
Trigger generation area
Measurement is
immediately
started in the
Level operation.
Trigger and Alarm operations
Rising : A trigger/alarm is generated when the input signal is higher than the specified level.
Trigger (alarm) generation area
CH.1
Falling : A trigger/alarm is generated when the input signal is lower than the specified level.
Trigger (alarm) generation area
Win In : Used to specify the upper and lower limits for each channel. When the input signal
level comes (or is) between these limits, a trigger/alarm is generated.
Trigger (alarm) generation area
CH.1
Win Out : Used to specify the upper and lower limits for each channel. When the input signal
level goes (or is) out of these limits, a trigger/alarm is generated.
Trigger (alarm) generation area
CH.1
If the START key is pressed here
Setting
level
An edge exceeding
the setting level is
required.
Measurement is
started from here in
the Edge operation.
Measurement starts (alarm generated)
Measurement starts (alarm generated)
Measurement starts (alarm generated)
Measurement starts (alarm generated)
CHAPTER 3 Settings and Measurement
Example: Rising Edge And for 1CH and 2CH
If the START key is pressed here
1CH
For 1CH, a trigger is
generated here.
2CH
Setting level
Setting level
Upper limit level
Lower limit level
Upper limit level
Lower limit level
For 1CH, a trigger is assumed to
be generated here, too.
For 2CH, a trigger
is generated here.
Measrement is started here.
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