GRAPHTEC midi LOGGER GL240 User Manual page 95

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 satisfied 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.
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
Input signal
Falling : A trigger/alarm is generated when the input signal is lower than the specified level.
Trigger (alarm) generation area
Input signal
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
Input signal
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
Input signal
If the START key is pressed here
Setting
An edge exceeding
level
the setting level is
required.
Measurement is
started from here in
the Edge operation.
Measurement starts (alarm generated)
Setting level
Measurement starts (alarm generated)
Setting level
Measurement starts (alarm generated)
Upper limit level
Lower limit level
Measurement starts (alarm generated)
Upper limit level
Lower limit level
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
For 2CH, a
trigger is generated here
For 1CH, a trigger is assumed to
be generated here, too.
Measrement is started here.
3-53