Introduction, Clock Operation | Lathem AT-DDC4 specs

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Introduction

The AirTime AT-DDC Wireless Digital Display Wall Clock is designed with a 4-inch red LED display that can be viewed from distances over 100 feet. The bright red display shows the hour and minutes and can be configured for a 12 or 24 Hour format.

The AT-DDC Wall Clock is synchronized by a Lathem ATX series transceiver’s wireless correction signal.

The AT-DDC Wall Clock can be mounted directly to a wall, to a single gang outlet box or, with optional mounting kits, as double-faced units from the wall or ceiling.

Clock Operation

When the AT-DDC Wall Clock is connected to 110vAC power, the clock displays 12:00 AM and begins listening for a signal from an ATX series transceiver. Upon reception of the AirTime signal, (verified by a red LED flashing in the lower right corner), the clock will adjust to the correct time. The clock will continue to listen and correct itself as needed.

Power Cord Installation

A 3 wire grounded power cord is required. If the power cord will not be in conduit, secure the power cord with a cable clamp into the selected vent cap.

Remove the two phillips head screws from the left or the right end cap and remove. Slide the circuit board out of the case. Carefully flip the circuit board over and lay it face down on a clean, smooth work surface. Remove one of the vent caps from the case of the wall clock and route the power cord through it to the back of the circuit board. (If the power cord will be routed through the back of the clock using conduit, route the cord through the gang box and conduit access hole to the back of the circuit board assembly). Strip away 1/2" of the protective shield from each wire of the power cord. Locate the two black wires leading from the back of the circuit board. Using wire nuts, attach the AC In line of the cord to one and the AC Return line to the other (normally black is AC In and white is AC Return). Attach the ground wire of the cord, (normally green) to the green ground screw located on the inside back of the case. Slide the circuit board back into the case, replace the end cap and secure with the two phillips head screws.