Casio EA-200 - Manual (Page 28)

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3-9
Setup
k Additional Start Trigger Parameters
The following are the parameters that need to be configured for the Count Down, CH1,
SONIC, and Microphone start triggers when Normal, Real-Time, or Fast is selected as the
mode.
• If you specify CH1, SONIC, or Microphone for the [Start Trigger] parameter, you should
also use the [Trigger] tab of the Setup dialog box to specify an appropriate start trigger for
the selected sensor. Failure to specify an appropriate start trigger for the selected sensor
will cause an error to occur.
Count Down Start Trigger
Additional Parameter Initial Default Range
Timer 5 sec 1 to 10 sec
Timer: With this start trigger, performing the sampling operation starts a countdown*, and
actual sampling begins when the end of the countdown is reached. The countdown
start value can be specified in the range of 1 to 10 seconds.
* While a countdown is in progress, a countdown tone sounds from the EA-200
speaker and a Count Down dialog box remains on the ClassPad display. If you
cancel the countdown while this dialog box is displayed, the countdown tone will
continue to sound until the end of the preset Timer time is reached.
CH1 Start Trigger
Additional Parameter Initial Default Range
Sensor — —
Trigger Threshold Depends on connected sensor Depends on connected sensor
Trigger Edge Rising Rising, Falling
Sensor: This parameter shows the sensor that is currently connected to the CH1
channel. This parameter cannot be changed manually. Sampling is
triggered in accordance with the input value of the sensor connected to
the CH1 channel. The timing of the trigger is controlled in accordance
with the following two parameters.
Trigger Threshold: Specify a threshold value to specify when sampling is triggered.
Trigger Edge:
Select either [Rising] (reaching the [Trigger Threshold] value from a value
less than it) or [Falling] (reaching the [Trigger Threshold] value from a
value greater than it) for this parameter.
Tip
• With this start trigger, executing a sampling operation initially enters the standby state, and
sampling does not start until sampled values cross the threshold in the specified direction (rising
or falling). When [Rising] is specified for [Trigger Edge], for example, sampling will not start if the
input value is already greater than the specified threshold value when the sampling operation is
executed. This is because the threshold has not been crossed after execution of the sampling
operation.
• When specifying the Trigger Threshold, be sure to specify a value that represents a relatively
significant change for the current or normally measured value. A threshold value that is too close
to the current or normally measured value can cause problems with triggering.
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