GRAPHTEC GL840 User Manual page 125

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 Mode
Pulse n Mode
Logic n Mode Lower-Level-Upper
* Pulse and Logic are switchable.
<Trigger level settings>
Place the cursor here and press
the [ENTER] key to open the
following setting screen.
(2)
Setting
(1) Combination
<For Trigger>
Detection
method
<For Alarm>
(2) Mode
(3) Level
Level
Level Combination Trigger
(1)
(3)
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.
Level: Each condition is Level operation.
Edge: Each condition is Edge operation.
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.
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 Mode Level
Pulse n Mode Level
Logic n Mode Level
* 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 level settings>
Place the cursor here and press
the [ENTER] key to open the
following setting screen.
(2)
Description
CHAPTER 3 Settings and Measurement
OR Alarm output n
(1)
(3)
3-53