GRAPHTEC GL900 User Manual page 62

Settings and Measurement
Trigger Level Settings/Alarm Level Settings
If the start side source setting or stop side source setting is "Level", specify detailed conditions for
each channel.
The overall structure of level triggers are as shown below.
CH n
Pulse n
Logic n
* Pulse and Logic are toggled back and forth.
<Trigger Level Settings>
(1) Combination
(2) Mode
(3) Level
(4) Hold Generated Alarm Specifies the operation that occurs when the alarm conditions are met once and then
3-30
Mode Level
Combi-
Mode Level
nation
Mode Level
Setting
Sets the combination of trigger conditions set for each channel.
Level OR
Level AND
Edge OR
Edge AND
Specifies the mode for trigger comparison for each channel.
Off
↑ H (Rising) : Generates a trigger when an input signal is above the specified level.
↓ L (Falling) : Generates a trigger when an input signal is below the specified level.
Win In
Win Out
Specifies the level for trigger comparison.
Set one level for comparison if the mode is set to ↑ H (Rising) or ↓ L (Falling).
Set two levels for comparison if the mode is set to Win In or Win Out.
are no longer met.
Hold
Do Not Hold : Clears the alarm status when the alarm conditions are met once and
CH n Mode
Trigger
Pulse n Mode
Logic n Mode
* Pulse and Logic are toggled back and forth.
* Specify an alarm output destination for Pulse and Logic for each channel.
The conditions are ORed for each alarm output destination.
Example) Suppose CH1 and CH2 are set to Output 1 and CH3 and CH4 to Output 2.
If either CH1 or CH2 meets the conditions, Alarm Output 1 occurs.
If either CH3 or CH4 meets the conditions, Alarm Output 2 occurs.
<Alarm Settings>
Description
: Starts (stops) capturing data when at least one trigger condition is met.
Each condition is a level operation.
: Starts (stops) capturing data when all trigger conditions are met. Each
condition is a level operation.
: Starts (stops) capturing data when at least one trigger condition is met.
Each condition is an edge operation.
: Starts (stops) capturing data when all trigger conditions are met. Each
condition is an edge operation.
: Disables triggers for the set channel.
: Generates a trigger when an input signal is (has come) between the
upper and lower limit levels set for each channel.
* There is no setting for a logic channel.
: Generates a trigger when an input signal is not (has moved out from)
between the upper and lower limit levels set for each channel.
* There is no setting for a logic channel.
: Maintains the alarm status when the alarm conditions are met once and
then are no longer met. (Press the CURSOR key to clear the alarm).
then are no longer met.
Level
Alarm output n
Level Or
Level