Data Translation DT340, Getting Started Manual

Page: 59 / 70

Verifying the Operation of a DT340 Board
51
6
6
6
6
6
6
6
6
6
7. Click Send.
The value of each digital output line of digital port B is displayed on the
screen in both text and graphical form.
Performing a Frequency Measurement Operation
To verify that the board can perform a frequency measurement
operation, perform the following steps:
1. Wire an external clock source to counter/timer 0 on the DT340
board. Refer to
page 39 for an example of how to connect a an
external clock for a frequency measurement operation.
Note: The Quick Data Acq application works only with
counter/timer 0.
2. Click the Acquisition menu.
3. Click Frequency Counter.
4. Select the appropriate DT340 board from the Board list box.
5. In the Count Duration text box, enter the number of seconds
during which events will be counted.
6. Click Start to start the frequency measurement operation.
The operation automatically stops after the number of seconds you
specified has elapsed, and the frequency is displayed on the screen.
If you want to stop the frequency measurement operation when it is
in progress, click Stop.