GRAPHTEC midi LOGGER GL240 - Page 92

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CHAPTER 3 Settings and Measurement
(3)-1 Start side source setting
This is used to specify trigger conditions to start data capture.
Selection item Description
Off Starts capturing data unconditionally when you press the [START/STOP] key.
Level Starts capturing data when a specied level is reached.
-> When Level is selected, the condition for each channel must be set.
Refer to “Trigger Level Settings/Alarm Level Settings” desdcribed below.
Alarm Starts capturing data when an alarm is generated in the specied alarm port.
External Input Starts capturing data when an input signal is received from an external trigger terminal.
* A trigger is established at a transition from 5 V (open) to 0 V (shorted to the ground).
A falling edge operation occurs.
Date Starts capturing data when specied date and time arrives.
Weekly Starts capturing data at the specied time on days of week for which On is set.
Example: On is set for Mon, Tue, Wed, Thu, and Fri, Off is set for Sun and Sat, and 9:00 is
set as the time.
Starts capturing data at 9:00 on weekdays. Does not start capturing data on Sat
and Sun.
Time Starts capturing data when a specied length of time elapses.
(3)-2 Stop side source setting
This is used to specify trigger conditions to stop data capture.
Selection item Description
Off Stops capturing data unconditionally when you press the [START/STOP] key.
Level Stops capturing data when a specied level is reached.
-> When Level is selected, the condition for each channel must be set.
Refer to “Trigger Level Settings/Alarm Level Settings” desdcribed below.
Alarm Stops capturing data when an alarm is generated in the specied alarm port.
External Input Stops capturing data when an input signal is received from an external trigger terminal.
* A trigger is established at a transition from 5 V (open) to 0 V (shorted to the ground).
A falling edge operation occurs.
Date Stops capturing data when specied date and time arrives.
Weekly Stops capturing data at the specied time on days of week for which On is set.
Example: On is set for Mon, Tue, Wed, Thu, and Fri, Off is set for Sun and Sat, and 9:00 is
set as the time.
Stop capturing data at 9:00 on weekdays. Does not stop capturing data on Sat and
Sun..
Time Stops capturing data when a specied length of time elapses.
•
When External Input is used as the trigger source, no stop trigger is accepted for 50 ms after capture is
started.
•
When the start trigger is External Input, data is captured at sampling intervals (xed to 5 seconds if they
are more than 5 seconds) and retained temporarily.
This retained data is refreshed at sampling intervals (xed to 5 seconds if they are more than 5 seconds).
Since the external trigger input operation conducts detection at 10 ms intervals asynchronously from
sampling, the retained data becomes the rst point when an external trigger is detected. Starting from
this point, data is captured at sampling intervals.
•
Even when the stop trigger is sent from an external device, the detection is executed in 10 ms. The data
capture is stopped when the stop trigger is received.