NCR 7870 manual Cable Lengths and Hole Sizes, Cable Hole Diameters, DC Power Cable Power Supply to

Chapter 3: Site Preparation 3-21

Cable Lengths and Hole Sizes

When selecting a cable, take care to choose one with enough length for easy routing to the NCR 7870. Also, include enough slack to allow the unit to be lifted from the cutout without disconnecting the cables. This will be beneficial while servicing the unit.

Minimum hole size data is provided for making openings to pass cables through the checkstand. Ensure after drilling that there are no sharp edges which may damage the cable.

The following charts provide cable length and hole size data for AC Power Cords, DC Power Cables, Interface Cables, and Remote Display Cables. The NCR 7870 can connect to any NCR Retail Terminal as well as many competitive host terminals so a comprehensive list of interface cables has been provided.

Cable Hole Diameters

Cable	Minimum Hole Size
Power Cord – Outlet to Power Supply	3.18 cm (1.25 in.)
Power Cable – Power Supply to 7870	1.52 cm (0.60 in.)
Interface Cable	1.90 cm (0.75 in.)
Remote Display Cable	1.90 cm (0.75 in.)

DC Power Cable – Power Supply to 7870

Minimum Hole Diameter: 1.52 cm (0.60 in.)

Cable	Cable Length
DC Power Cable	1.22 Meters (4 Feet)

Note: DC Power Cable length is not a factor if the Power Supply is mounted on the chassis of the 7870 (Models 1000 and 2000 only).