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).
