ADLINK Technology DAQ/PXI-20 Series, Руководство пользователя

Страница: 67 / 86

56 Operation Theory
Mode 6: Re-triggered Single Pulse Generation
This mode is similar to mode5 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
Mode 7: Single Triggered Continuous Pulse Generation
This mode is similar to mode5 except that the counter gener-
ates con-tinuous periodic pulses with programmable pulse
interval and pulse-width following the first active edge of
GPTC_GATE. Once the first GPTC_GATE edge triggers the
counter, GPTC_GATE takes no effect until the soft-ware-start is
re-executed. Figure 4-29 illustrates the generation of two
pulses with a pulse delay of four and a pulse-width of three.
Figure 4-29: Mode 7 Operation