Technical information

16
Standard Mode
Use Standard mode to make frequency, period or count measurements with digital
sensors and/or make measurements with analog sensors. The New Experiment
Setup dialog box in Standard mode is shown in Figure 10.
The DataCollector records data until the number of Samples has been reached.
However, if Samples is set to Continuous, the DataCollector will not stop the cur-
rent experiment on it's own - stop it by pressing the Go button.
IMPORTANT: In continuous mode, the experiment will
proceed until you stop it, but the DataCollector will only
record the most recent 500 data points.
Use the Rate setting to control how often the DataCollector makes measurements
in Standard mode. You should set this sampling period to be larger than the typi-
cal period you will measure with any sensor. For example: to measure a pendulum
with a characteristic period of 3 seconds, set the rate to at least 5 seconds/sample.
The Analog setting shows any connected analog sensors. You can only change this
setting by plugging and unplugging sensors. Analog sensors are usually detected
automatically. In the event the DataCollector cannot determine which sensor you
have connected, a dialog box will appear on screen. Select from the list of sensors
the type of sensor you have connected, then tap OK.
The Digital settings control which digital signals the DataCollector records.
Choose freq (frequency), period, count or none for inputs A and B.
IMPORTANT: The DataCollector will record a maximum of
three (3) columns in the table. If you choose to record two dig-
ital signals (one for A and B) in Standard mode, you can only
record data from one analog sensor.
To use both analog sensors, ensure that none is selected for at least one of
Digital A or B.
Tap the Go button to start the experiment and begin recording data.
Tap Meter Only to only view live data instead (no data is recorded).