TVG420 User Manual 2.2 (SW release 1.2.2)

ASI-IP-GTW User's ManualWarning: If the terminal screw has to be replaced, use an M4x12mmlong pozidrive panhead. Using a longer screw may cause a safetyhazard.1.1.1.17 Connecting the Video Gateway to the AC Power SupplyWarning: Do not overload wall outlets and extension cords as this canresult in a risk of fire or electrical shock. As no power switch is fitted inthis unit, ensure that the local ac power supply is switch off beforeconnecting the supply cord. The unit is not fitted with an on/off switch.Ensure that the socket-outlet is installed near the equipment so that iseasily accessible. Failure to isolate the equipment properly may cause asafety hazard.To connect the unit to the local AC power supply:1. Ensure that the local ac power supply is switch OFF.2. Connect the ac power lead to the Video Gateway mains inputconnector and then the local mains supply.2.3.3 Optional DC Power SupplyThe ASI-IP-GTW can be delivered with a 48 VDC power supply for usein environments where this is required. The DC power can tolerate avoltage range of 36 – 72 VDC. Please refer toAppendix B: Technical Specification for a detailed specification of thepower supply.Units delivered with DC power supply, has a 3–pin male power D-SUBconnector in stead of the standard Mains Power Connector. Also afemale 3-pin D-SUB connector is supplied.The pin assignment is shown in Table 4.Table 4 DC power connector pin assignmentPin (placement)Specification1 (top) + (positive terminal)2 (middle) - (negative terminal)3 (bottom) Chassis GroundTo connect the unit to the local DC power supply:1. Use a soldering tool to attach the supplied loose female power D-SUB connector to your power leads (not supplied).2. Connect the power leads to your local power supply.3. Connect the DC power connector, with attached power leads, to theVideo Gateway power input connector.Page 20