Adlink DAQe-2006 Manual do Utilizador descarregar pdf (Página 73)

Operation Theory 61

Mode 5: Single Triggered Pulse Generation

This function generates a single pulse with programmable

delay and pro-grammable pulse-width following an active

GPTC_GATE edge. You could specify these programmable

parameters in terms of periods of the GPTC_CLK input. Once

the first GPTC_GATE edge triggers the single pulse,

GPTC_GATE takes no effect until the software-start is re-exe-

cuted. Figure 4-27 illustrates the generation of a single pulse

with a pulse delay of two and a pulse-width of four.

Figure 4-27: Mode 5 Operation

Mode 6: Re-triggered Single Pulse Generation

This mode is similar to Mode 5 except that the counter gener-

ates a pulse following every active edge of GPTC_GATE. After

the software-start, every active GPTC_GATE edge triggers a

single pulse with programmable delay and pulse-width. Any

GPTC_GATE triggers that occur when the prior pulse is not

completed would be ignored. Figure 4-28 illustrates the gener-

ation of two pulses with a pulse delay of two and a pulse-width

of four.

Figure 4-28: Mode 6 Operation

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Adlink DAQe-2006 Manual do Utilizador Página 73