The DAS16jr/16 mode is the simplest of all STX104 modes, and this mode is compatible with many other cards. In this case, as seen by the illustration below, sampling is equally spaced. If phase delay between channels is not important, this mode offers maximum settling time between channels. 

This mode typically uses the 8254 timer to set the sampling rate, however, other sampling sources can now be configured via the Analog Input General Configuration Register. The frame counter will actually count samples rather than frames, and the Analog Input Frame Timer will produce the timing for each sample rather than each frame.

Data Acquisition Modes