User`s guide

30 • Operation Theory
2. The SI_counter is a 24-bit counter and the SI2_counter is a 16-bit
counter. Therefore, the maximum scan interval using the internal
Timebase = 2
24
/40M s = 0.419s, and the maximum sampling interval
between 2 channels using the internal Timebase = 2
16
/40M s =
1.638ms.
3. The scan interval can’t be smaller than the product of the data sam-
pling interval and the NumChan_counter value. The relationship can
be represented as: SI_counter>=SI2_counter * NumChan_counter.