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Timers
Your Matrox 4Sight GPm has 16 timers. These timers can each generate a timer
output signal which allows you to control the exposure time and other external
events related to the video source (such as a strobe). The timer signals can be
output to auxiliary output signals.
Each of the 32-bit timers (Timer 1 through 16) can count up to 1099511627775
clock ticks before resetting.
The timers can use one of the following as a clock source:
• A clock that is internally generated. Each timer can use your Matrox 4Sight GPm
unit's clock generator, which can generate a single clock with a programmable
period of 240 nsecs.
• A clock from an external source. In this case, you must define the appropriate
auxiliary input signal as a timer-clock input; the timer-clock input signal must
meet the electrical specification of the auxiliary signal.
• A clock based on another timer output. Timer 1 can use a clock based on Timer 2,
and Timer 2 can use a clock based on Timer 1.
• A clock based on a rotary decoder's output. In this case, the timer will act more
as a counter because it is rare that a rotary decoder's output is periodic.
To route a timer output on an auxiliary signal, use the MIL-Lite function
MsysControl() with M_IO_SOURCE
up the timers using MsysControl() with M_TIMER_...
*
+ M_AUX_IOn set to M_TIMERm. Set
Timers
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