Different lasers have different connection modes. Take ordinary glass tube
laser as example. The optical signal of ordinary glass tube laser is 5V, and
set low level for light emitting. The power signal PWM of main board is
connected to the IN pin of laser power source and TTL to the L pin of laser
power source. All signals have uniqueness, which is connected to this
group of signals, other pins do not need to be connected. You could
connect the water tank by the WP pin (water protection) of the main
board or the P pin (water protection) of laser power supply, and please
pay attention that you could only choose one of them. For the RF tube
laser power supply, only connect the PWM of the main board to the IN pin,
GND to G pin, and no need to connect TTL pin.
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