Cable and Connection Considerations
A blue rubber seal is included for each DVI port on the device. This seal must be installed between each DVI port and DVI-cable connector to avoid damage to the connectors.
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For easer cable routing, the power, NMEA® 0183, and Garmin® Marine Network cables are packaged without the locking rings installed. You should route the cables before you install the locking rings.
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After connecting a locking ring to a cable, make sure the ring is securely connected and the o-ring is in place so the power or data connection remains secure.
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The device should be connected to the same power source as the card reader. If this is not possible, the devices must be connected to the same ground.