Figure 3-15, Mode 5-single-triggered pulse, Figure 3-16 – ADLINK USB-2401 User Manual

Page 52: Mode 6-re-triggered single pulse, Gate clk count value out software start, Figure 3-16: mode 6-re-triggered single pulse

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42

Operation

Figure 3-15: Mode 5-Single-Triggered Pulse

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
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 are ignored. Generation of two pulses with a pulse
delay of two and a pulse width of four is shown.

Figure 3-16: Mode 6-Re-Triggered Single Pulse

Mode 7: Single-Triggered Continuous Pulse Generation

This mode is similar to Mode 5 except that the counter gener-
ates continuous periodic pulses with programmable pulse inter-
val and pulse-width following the first active edge of
GPTC_GATE. When the first GPTC_GATE edge triggers the
counter, GPTC_GATE has no effect until software start is exe-
cuted again. Generation of two pulses with a pulse delay of
four and a pulse-width of three is shown.

2

2

1

0

3

2

1

0

Gate

CLK

Count value

OUT

Software start

2

2

1

0

3

2

1

0

2

2

1

0

3

2

1

0

2

2

G a t e

C L K

C o u n t v a l u e

O U T

S o f t w a r e s t a r t

I g n o r e d

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