Data Translation DT9824, Руководство пользователя, Страница: 41 / 102

Verifying the Operation of the Module
41
Testing Continuous Analog Input
To verify that the module can perform a continuous analog input operation, do the following:
1. Connect known voltage sources, such as the outputs of a function generator, to analog
input channels 1 and 2 on the DT9824 module (using the differential configuration). Refer
to
page 33 for more information on connecting analog input signals.
2. In the Quick DataAcq application, choose Scope from the Acquisition menu.
3. Select the appropriate DT9824 module from the Board list box.
Note: Once you select the module, the LED on the module turns green.
4. In the Sec/Div list box, select the number of seconds per division (.1 to .00001) for the
display.
5. Click Config from the Toolbar.
6. From the Config menu, select ChannelType , and then select Differential .
7. From the Config menu, select Range , and then select Bipolar .
The default is Bipolar.
8. From the Scope view, double-click the input range of the channel to change the input
range of the module: ±10 V, ±1.25 V, ±0.625 V, or ±0.3125 V.
The display changes to reflect the selected range for all the analog input channels on the module.
9. In the Trigger box, select Auto to acquire data continuously from the specified channels or
Manual to acquire a burst of data from the specified channels.
10. Click Start from the Toolbar to start the continuous analog input operation.
The application displays the values acquired from each channel in a unique color on the oscilloscope
view.
Note: When the module is performing a continuous Scope or FFT operation, the LED on
the module turns green (the resulting color may appear yellow).
11. Click Stop from the Toolbar to stop the operation.