GRAPHTEC GL820 - Page 67

3−31
CHAPTER 3 Settings and Measurement
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.
CH n
Pulse n
Logic n
CH n
㩷㪦㪩 Pulse n
Logic n
* Pulse and Logic are switchable.
* 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.
Alarm output n
Mode
Mode
Mode
Level
Level
Level
Mode
Mode
Mode
Level
Level
Lower-Level-Upper
Combination
Tr igger
<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.
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 specified trigger conditions is met.
Each condition is Level operation.
Level AND : Starts (stops) capturing data when all of the specified trigger conditions are met.
Each condition is Level operation.
Edge OR : Starts (stops) capturing data when at least one of the specified trigger conditions is met.
Each condition is Edge operation.
Edge AND : Starts (stops) capturing data when all of the specified 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 specified level.
↓
L (falling) : A trigger is generated when the input signal falls below the specified 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.