GRAPHTEC gl820 User Manual page 67

Trigger level settings/Alarm level settings
Specifies detailed conditions for each channel when the start and stop side source settings are Level.
The configuration of the level trigger is as shown in the figure below.
Mode
CH n Level
Mode Level
Pulse n
Mode
Logic n
Lower-Level-Upper
* Pulse and Logic are switchable.
<Trigger level settings>
Setting
(1) Combination Sets a combination of trigger conditions set for each channel.
Level OR : Starts (stops) capturing data when at least one of the specified trigger conditions is met.
<For Trigger>
Level AND : Starts (stops) capturing data when all of the specified trigger conditions are met.
Edge OR : Starts (stops) capturing data when at least one of the specified trigger conditions is met.
Edge AND : Starts (stops) capturing data when all of the specified trigger conditions are met.
Detection Level: Each condition is Level operation.
method
Edge: Each condition is Edge operation.
<For Alarm>
(2) Mode Sets a trigger comparison mode for each channel.
Off
↑ H (rising) : A trigger is generated when the input signal exceeds the specified level.
↓ L (falling) : A trigger is generated when the input signal falls below the specified level.
Win In
(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.
CH n
Combination Trigger
Pulse n
Logic n
* 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.
Place the cursor here
and press the ENTER
key to open the
following setting screen.
Each condition is Level operation.
Each condition is Level operation.
Each condition is Edge operation.
Each condition is Edge operation.
: Disables triggers for the setting channel.
: 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.
CHAPTER 3 Settings and Measurement
Mode
Level
Mode Level
Mode
Level
<Alarm level settings>
Description
Alarm output n
Place the cursor here
and press the ENTER
key to open the
following setting screen.
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