ASTRO-MED DASH II Manual de início rápido - Página 7

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capturing the latest data at the expense of older data. Manual triggering means that some outside event
must occur before the recorder will start collecting data. Auto triggering means that the recorder will begin
capturing data as soon as the recorder is armed.
•
For our example, select "Manual/Safe."
•
Press the softkey below "Rate" and use the encoder wheel to select a sample rate from 1 sample every
minute to 10KHz (1 sample every 100usec). For our example, select 1 KHz.
•
Press the softkey below "Size" to select the number of samples collected in this capture. Use the
encoder wheel to select from 1 K Sample (1000 samples) to 256 K Samples. For our example, select 1
K Sample.
•
Press the softkey below "Back" to return to the capture configuration menu.
You are able to change the location of the trigger within the window of the data capture. This enables you
to control the amount of pre-trigger and post-trigger data that is captured. For example, if you want 50%
of the data that you capture to be pre-trigger data and 50% of the data to be post-trigger data, then you
would set the Trigger/Window to "center". Let's try this.
•
Press the softkey below "Trig Pos" and use the encoder wheel to set the trigger position. For our
example, set the trigger position to 20%.
•
Press the softkey below "back" to return to the capture configuration menu.
Now, we are going to setup the trigger.
•
Press the softkey below "Back" to return to the second screen of the main menu.
•
Press the softkey below "Trig Ctrl." The Trigger Menu will appear.

TRIGGER MENU

Trig
Ch1
•
Press the softkey below "Trig Srce."
•
Press the softkey below "Chns" until the screen reads off.
The recorder is now in manual trigger mode and must be armed and triggered by the user.
•
Press the [ARM] key on the front panel.
Notice the light next to the [ARM] key turns on to signify that the system is armed and awaiting capture.
The screen shows:
Capture:
Waiting Trig
Where "#xxxxx" is the data capture file number.
•
Press the softkey below "Abort" if you wish to abort the capture.
•
Press the [TRIG] key to trigger the data capture.
When the capture is complete, the screen will display the following message:
Capture:
Plbk
Trig
Trig
Ch2
Srce
#xxxxx
done-#xxxxx
Arch
Info
Back
Abort
Back