GRAPHTEC midi LOGGER GL240 - Page 94

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CHAPTER 3 Settings and Measurement
Trigger level settings/Alarm level settings
Species detailed conditions for each channel when the start and stop side source settings are Level.
The conguration of the level trigger is as shown in the gure below.
* Pulse and Logic are switchable.
CH n Mode Level
Combination Pulse n Mode Level Trigger
Logic n Mode Lower-Level-Upper
* Pulse and Logic are switchable.
* Specify an alarm output destination for each channel and Pulse/Logic.
Each of the alarms is ORed at the output destination.
Example: If you specify 1 as the output destination of 1CH and 2CH and 2 as that of 3CH
and 4CH, Alarm Output 1 occurs when one of 1CH and 2CH meets the conditions,
and Alarm Output 2 occurs when one of 3Ch and 4CH meets the conditions.
CH n Mode Level
OR Pulse n Mode Level Alarm output n
Logic n Mode Level
<Trigger level settings> <Alarm level settings>
Place the cursor here and press
the [ENTER] key to open the
following setting screen.
Place the cursor here and press
the [ENTER] key to open the
following setting screen.
(2)
(3)
(1)
(2)
(3)
(1)
Setting Description
(1) Combination
<For Trigger>
Sets a combination of trigger conditions set for each channel.
Level OR : Starts (stops) capturing data when at least one of the specied trigger conditions
is met.
Each condition is Level operation.
Level AND : Starts (stops) capturing data when all of the specied trigger conditions are met.
Each condition is Level operation.
Edge OR : Starts (stops) capturing data when at least one of the specied trigger conditions
is met.
Each condition is Edge operation.
Edge AND : Starts (stops) capturing data when all of the specied trigger conditions are met.
Each condition is Edge operation.
Detection method
<For Alarm>
Level: Each condition is Level operation.
Edge: Each condition is Edge operation.
(2) Mode Sets a trigger comparison mode for each channel.
Off : Disables triggers for the setting channel.
H (rising) : A trigger is generated when the input signal exceeds the specied level.
L (falling) : A trigger is generated when the input signal falls below the specied level.
Win In : Used to specify the upper and lower limits for each channel.
When the input signal level is (or comes) between these limits, a trigger is
generated.
* This setting is not available for Logic CH.
Win Out: : Used to specify the upper and lower limits for each channel.
When the input signal level is (or goes) out of these limits, a trigger is generated.
* This setting is not available for Logic CH.
(3) Level Sets a trigger comparison level. If the mode is H (rising) or L (falling), set one comparison
level.
If the mode is Win In or Win Out, set two comparison levels.