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7.1.2 12-bit Counter
The camera pixel clock (42.954 MHz) can be used as a source. The counter has a “Divide by
N”, where N has the range 1 through 4096, allowing a wide range of clock frequencies to be
programmed. Setting value 0 is bypass, setting value 1 is 1/2 dividing and setting value 4095
is 1/4096 dividing.
7.1.3 Pulse Generators (0 to 1)
Each pulse generator consists of a 20-bit counter. The behavior of these signals is defined by
their pulse width, start point, end point and number of repetitions.
The pulse generator signals can be set in either triggered or periodic mode.
In triggered mode, the pulse is triggered by the rising edge/falling edge/high level or low
level of the input signal.
In periodic mode, the trigger continuously generates a signal that is based on the configured
pulse width, starting point and end point.
7.2. Opto-isolated Inputs/Outputs
The control interface of the C3 GigE Vision camera series has opto-isolated inputs and outputs,
providing galvanic separation between the camera's inputs/outputs and peripheral equipment.
In addition to galvanic separation, the opto-isolated inputs and outputs can cope with a wide
range of voltages; the voltage range for inputs is +3.3V to +24V DC whereas outputs will
5V to +24V DC.
The figure below shows the functional principle (opto-coupler) of the opto-isolated
inputs/outputs.
Fig.13 Opto-coupler
7.2.1 Recommended External Input circuit diagram for customer
Fig.14 External Input Circuit, OPT IN 1 and 2
