GRAPHTEC midi LOGGER GL240 - Page 95

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CHAPTER 3 Settings and Measurement
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, even if the trigger level achieves to the trigger generation level when the [START] key
is pressed, it is not considered the trigger condition is satised if the level does not exceed the set level.
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.
If the START key is pressed here If the START key is pressed here
For 1CH, a trigger is assumed to
be generated here, too.
Trigger generation area
Example: Rising Example: Rising Edge And for 1CH and 2CH
Setting
level
An edge exceeding
the setting level is
required.
For 1CH, a trigger
is generated here.
For 2CH, a
trigger is generated here
Measurement is
started from here in
the Edge operation.
Measrement is started here.
Measurement is
immediately
started in the
Level operation.
1CH
2CH
Trigger and Alarm operations
Rising : A trigger/alarm is generated when the input signal is higher than the specied level.
Input signal
Measurement starts (alarm generated)
Trigger (alarm) generation area
Setting level
Falling : A trigger/alarm is generated when the input signal is lower than the specied level.
Input signal
Measurement starts (alarm generated)
Trigger (alarm) generation area
Setting level
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.
Input signal
Measurement starts (alarm generated)
Trigger (alarm) generation area
Upper limit level
Lower limit level
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.
Input signal
Measurement starts (alarm generated)
Trigger (alarm) generation area
Upper limit level
Lower limit level