Sample Rate > Activating Procedure
Click
the Sample Rate button in the Toolbox.
In
the Edit menu click on Sample
Rate….
OR
Double-click on the S/s (F3): field in the status bar.
Choose
Edit Sample Rate… (ALT, E, R).
OR
Press F3.
The sample rate dialog box opens.
It is here that a specific sample rate may be configured.Enter the desired throughput rate (or total scanning rate) in the Sample Rate text box in samples per second. For example, if you wanted to acquire two channels of data both at 40 Hz, you would enter a throughput rate of 80 in the text box.
However, with WinDaq Acquisition you can directly adjust or modify buffer size and sample rate, two factors that govern gap-free data acquisition.
The Preferences command on the Edit menu allows you to specify a buffer size ranging from 16kB to 128kB. The larger the buffer size, the greater the chance of acquiring gap-free data at the maximum sample rate your computer can achieve. However, the larger the buffer size, the more memory it uses, thus leaving less (perhaps not enough) for running other programs. If you never run other programs simultaneously with WinDaq Acquisition, then conserving memory is not an issue. However, if you like to run WinDaq Acquisition simultaneously with a spreadsheet program or a data analysis program, then you could limit the amount of memory allocated to the input buffer so the other applications have enough memory to run. See Buffer Size.
The Sample Rate dialog box allows you to specify sample rate. The sample rate used to determine buffer size is the old or previous sample rate value (before any changes were made with this dialog box). The amount of buffer space allocated is proportional to the sample rate. WinDaq Acquisition automatically and transparently allocates the correct amount of buffer space when you input a sample rate. However if you have increased the buffer size (Buffer Size), there is a chance that the sample rate you enter is too high for the amount of buffer space you have allocated. If this is the case, the S/s (F3): value in the status bar will be displayed in reverse video
This serves as a warning that you might not be able to reliably store data to disk with the current combination of sample rate and buffer size. See Different Ways of Allocating Memory. If the instructions therein do not help, you have two options: (1) lower the sample rate; or (2) increase the buffer size.
When the desired sample throughput rate is entered, click the OK button or press the Enter key to close the dialog box.