Dalsa QuickCam User Manual page 41

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Pulse Period (ns)
Displays the value of the parameter, in nanoseconds, of a complete delay-width
cycle of the pulse generator. This value is computed every time the delay, width
or granularity is modified and is available regardless of the periodic mode.
Pulse Frequency (Hz)
Displays the frequency of the pulse generator. This value is computed every time
the delay, width or granularity is modified and is available regardless of the
periodic mode.
Pulse Generator Timing
QuickCam can generate two internal signals using the internal pulse generators.
The behavior of each of these two pulse generators is defined by a delay and a
width. As shown in the accompanying diagrams, the delay is the time between
the trigger and the pulse transitions. The width is the time the pulse stays at the
active level before transitioning. The periodic mode, the delay determines the
low time of the pulse.
Each pulse generator generates a signal that can be used as an input to the GPIO
Control Block. A triggered pulse generator needs an input signal that comes from
an output of the GPIO Control Block.
03-032-10187-04
Triggered on rising edge: Indicates if a triggered pulse generator is
triggered on the rising edge of an input
Triggered on high level: Indicates is a triggered pulse generator is
triggered on the high level of an input
Triggered on falling edge: Indicates if a triggered pulse generator is
triggered on the falling edge of an input
Triggered on rising AND falling edges: Indicates if a triggered pulse
generator is triggered on the rising edge of an input and on the falling edge
of an input
Triggered on low level: Indicates if a triggered pulse generator is triggered
on the low level of an input
Positive Pulse Generated from a Rising Edge Trigger
Trigger
Pulse_Out
Negative Pulse Generated from a Level High Trigger
Trigger
Pulse_Out
pulse_delay pulse_width
pulse_delay pulse_width
QuickCam User's Manul
DALSA corp.