ADLINK DAQe-2502 - Manual (Page 58)

48 Operation Theory
Figure 4-18: Mode2 Operation
Mode3: Single Pulse-width Measurement
The counter counts the pulse-width of the signal on
GPTC_GATE in terms of GPTC_CLK. Initial count can be
loaded via software. After the software start, the counter counts
the number of active edges on GPTC_CLK when GPTC_GATE
is active. GPTC_OUT outputs high, and current count value
can be read-back via software after the completion of the
pulse-width measurement. Figure 4-19 illustrates the operation
where initial count = 0 in up-counting mode.
Figure 4-19: Mode 3 Operation