Raytec PULSESTAR VTR4, Installation Manual, Page: 18 / 38

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Note: The peak of these current pulses is typically 8 Amps, and that mean current
consumption is typically 5 Amps once the power-up sequence is complete, and
the VTR4 is running at maximum brightness and duty cycle.
6.2
Trigger input
The trigger input is opto-isolated. The opto-isolator isolates voltages up to 50V.
Signal Function
TRGI – Trigger input negative
TRGI + Trigger input positive
The trigger input circuit is as follows:
The trigger input circuit operates as follows:
When a voltage of 5V to 24V is applied across TRGI – and TRGI +, the trigger
input is logic 1 (on). When a voltage of 0V to 2V is applied across TRGI – and
TRGI +, the trigger input is logic 0 (off).
To see how to set up the light to trigger on a 0-1 transition (rising edge) or a 1-0
transition (falling edge), refer to Section 7.5, Trigger input.
The trigger input typically sinks 2mA when a 5V trigger is applied, and 12mA
when a 24V trigger is applied. The trigger input current will scale linearly
between these two extremes.
6.3 Trigger output
The trigger output is opto-isolated. The opto-isolator isolates voltages up to
50V.
Signal Function
TRGO – Trigger output negative
TRGO + Trigger output positive