Figure 3-17, Mode 7-single-triggered continuous pulse, Figure 3-18 – ADLINK USB-2401 User Manual
Page 53: Mode 8-continuous gated pulse, Operation 43, Figure 3-18: mode 8-continuous gated pulse
Operation
43
USB-2401
Figure 3-17: Mode 7-Single-Triggered Continuous Pulse
Mode 8: Continuous Gated Pulse Generation
This mode generates periodic pulses with programmable pulse
interval and pulse-width following software start. GPTC_GATE
enables/disables calculation. When GPTC_GATE is inactive,
the counter halts the current count value. Generation of two
pulses with a pulse delay of four and a pulse-width of three is
shown.
Figure 3-18: Mode 8-Continuous Gated Pulse
Mode 9: Edge Separation Measurement
Measures the time differentiation between two different pulse
signals. The first pulse signal is connected to GPTC_GATE
and the second signal is connected to GPTC_AUX. Clocks that
pass between the rising edge signal of two different pulses
through the 40 MHz internal clock or external clock are calcu-
lated. You can calculate the time period via the known clock
frequency. The maximum counting width is 32-bit. Decrease of
4
4
4
3
2
1
0
2
1
S o f t w a r e s t a r t
0
3
2
1
0
2
1
0
3
2
G a t e
C L K
C o u n t v a l u e
O U T
4
4
3
3
2
1
0
2
1
S o f t w a r e s t a r t
0
3
2
1
0
2
1
1
0
3
G a t e
C L K
C o u n t v a l u e
O U T