GRAPHTEC GL980 - Trigger Level Settings;Alarm Level Settings

3-101
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 setting > < Alarm setting >
(2) (2)(3) (3) (4)
(1)
Setting Description
(1) Combination Set the combination of the trigger condition set for each channel.
Level OR: Starts (stops) capturing when a set trigger condition is satised.
The level operation is determined by each condition.
Level AND: Starts (stops) capturing when all the set trigger conditions are satised.
The level operation is determined by each condition.
Edge OR: Starts (stops) capturing when a set trigger condition is satised.
The each operation is determined by each condition.
Edge AND: Starts (stops) capturing when all the set trigger conditions are satised.
The each operation is determined by each condition.
* Only for trigger setting.
(2) Mode Set the mode to compare trigger/alarm for each channel.
Off: Trigger/alarm of set CH is disabled.
H (Rising): Trigger/alarm is established when the input signal exceeds the set level.
L (Falling): Trigger/alarm is established when the input signal is lower than the set level.
Window In: Trigger/alarm is established when the input signal is within the range between
the upper level and lower level.
* Logic CH has no setting.
Window Out: Trigger/alarm is established when the input signal is out of the range between
the upper level and lower level.
* Logic CH has no setting.
(3) Level Set the level to compare trigger/alarm.
Set the comparison level to one place when the mode is H (Rising) or L (Falling).
Set the comparison level to two places when the mode is Window In or Window Out.
(4) Output Set the alarm output CH when an alarm occurs.
* Only for alarm setting
* The operation in parentheses () is for edge operation.
* When the alarm is set, the level operation is xed.