GRAPHTEC midi LOGGER HV User Manual page 146

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, 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
immediately
starts in the
Level operation.
Trigger and Alarm operations (H (Rising, L (Falling), Window In, Window Out)
H (Rising) : A trigger/alarm is generated when the input signal reaches specified level.
Trigger (alarm) generation area
Input signal
L (Falling) : A trigger/alarm is generated when the input signal reaches the specified level.
Trigger (alarm) generation area
Input signal
Win In : Used to specify the upper and lower limits. When the input signal level is enters specified limit
levels, a trigger/alarm is generated.
Trigger (alarm) generation area
Input signal
Win Out : Used to specify the upper and lower limits. When the input signal level exits specified limit levels, a
trigger/alarm is generated.
Trigger (alarm) generation area
Input signal
3-102
If the START key is pressed here
Setting
An edge exceeding
level
the setting level is
required.
Measurement starts
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
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
starts
Measrement is started here.
For 1CH, a trigger is assumed to
be generated here, too.