Adlink DAQe-2006 Bedienungsanleitung PDF herunterladen (Seite 71)

Operation Theory 59

Mode 2: Single Period Measurement

In this mode, the counter counts the period of the signal on

GPTC_GATE in terms of GPTC_CLK. Initial count can be

loaded from software. After the software-start, the counter

counts the number of active edges on GPTC_CLK between

two active edges of GPTC_GATE. After the completion of the

period interval on GPTC_GATE, GPTC_OUT outputs high and

then current count value can be read-back by software.

Figure 4-24 illustrates the operation where initial count = 0,

count-up mode.

Figure 4-24: Mode 2 Operation

Mode 3: Single Pulse-width Measurement

In this mode, the counter counts the pulse-width of the signal

on GPTC_GATE in terms of GPTC_CLK. Initial count can be

loaded from software. After the software-start, the counter

counts the number of active edges on GPTC_CLK when

GPTC_GATE is in its active state. After the completion of the

pulse-width interval on GPTC_GATE, GPTC_OUT outputs

high, then current count value can be read-back by software.

Figure 4-25 illustrates the operation where initial count = 0,

count-up mode.

1 2 ... 66 67 68 69 70 71 72 73 74 75 76 ... 91 92

Keine Kommentare

Adlink DAQe-2006 Bedienungsanleitung Seite 71