Pulsed laser should be driven by 24VDC±1V power source. a) Caution: Make sure the corresponding wires of the device are properly grounded. b) All the maintenance to the device should only be done by Raycus, because there is no replacement or accessory provided with the device. Please do not try to damage the labels or open the cover in order to prevent against electric shock, or the warranty will be invalid. c) The output head of the product is connected with an optical cable. Please be careful handling the output head. Avoid dirt and any other contaminations. Please use the specialized lens paper when cleaning the lens. Please lid the laser with protective cover of the light isolator to be against dirt only when the laser is not installed in the device or not in working. d) If the operating the device fails to follow this instruction, the protective function will be weakened. Therefore, it should be used under normal conditions. e) Do not install the collimating device into the output head when the laser device is in working. f) The device has three cooling fans at the rear panel to dissipate heat. In order to guarantee enough airflow to help giving heat off, there must be a space of at least 10cm’s width for airflow in front and rear side of the device. As the cooling fans are working at blow condition, if laser is mounted in a cabinet with fans, the direction should be same as laser’s fans. g) Do not look into the output head of the device directly. Please do wear appropriate laser safety eyewear during the time when operating the device. h) Make sure the pulse repetition rate higher than 30 KHz. i) For the longest time without pulse is only 100 us. If there is no pulse output, please stop marking at once, to avoid further damage of the device. j) Power source sudden interruption will do great harm to the laser device. Please make sure the power supply works continuously. a)Fix the module stable to the bracket and keep the laser in good ventilation. b) Connect the power line to 24VDC power and ensure enough DC output power.Keep it clear to the polarity of the electric current: anode-brown; cathode-blue; PE-yellow and green. The definition figure is shown in Figure ；c）Make sure that the interface of the external controllermatches the laser and the control cable is well connected to the laser’s interface. The recommended electrical connection is shown in Figure：d) The bending radius of the delivery fiber should not less than 15cm.