Sundance SMT8121 - Manual (Page 17)

Figure 9: control panel of the SMT391
Clock source: the SMT391 provides three clock sources for the sampling clock of
the ADC. This drop-down list allows selecting which one to use.
Sampling rate: select the sampling frequency of the ADC.
Channel I only: when selected, input J1 is sampled by both channels of the ADC.
When un-selected, inputs J1 and J2 are each sampled by one channel of the ADC.
Base board: select the base board used.
The section advanced should not be used when on-board clocks are used.
DRDA: the DRDA value depends on the sampling frequency and the base board
used. You may need to change this value if you are using external sampling clock as
the application then doesn’t know the sampling frequency. Refer to function
“calcDRDA()” in task ”Smt391Control.c” for the value to use.
SMT381 control
The window “SMT381 control” allows configuring some of the settings of the
SMT381 board.
Application Note SMT8121 Page 17 of 26 Last Edited: 19/02/2009 16:32:00