Lathem DDC2 User Manual
Page 3
Table of Contents
Introduction..................................................................................................................................................... 1
Clock Operation .............................................................................................................................................. 1
About this Manual .......................................................................................................................................... 2
Optional Accessories ...................................................................................................................................... 3
Configuring the DDC Series Wall Clock........................................................................................................ 4
Setting the DIP Switches - DDC2 / DDC4 Series....................................................................................... 5
DDC2 ...................................................................................................................................................... 5
DDC4 ...................................................................................................................................................... 5
DIP Switch Settings ................................................................................................................................ 6
Configuring RS485 Communications - DDC2/4-RS Series ........................................................................... 7
DDC2-RS.................................................................................................................................................... 7
DDC4-RS.................................................................................................................................................... 7
Battery Usage - DDC2 / DDC4 Series............................................................................................................ 7
DDC2/4-RS / DDC2/4-RS-24..................................................................................................................... 7
Battery Installation - DDC2 / DDC4 Series .................................................................................................... 8
DDC2 .......................................................................................................................................................... 8
DDC4 .......................................................................................................................................................... 8
Power Cord Installation - DDC2/4-RS ........................................................................................................... 8
DDC2-RS.................................................................................................................................................... 8
DDC4-RS.................................................................................................................................................... 9
Wiring Installation - DDC2/4-RS Series......................................................................................................... 9
Secondary Wiring ....................................................................................................................................... 9
RS485 Wiring ............................................................................................................................................. 9
DDC-TC Wiring ......................................................................................................................................... 9
Replacing an Existing DDC4 Wall Clock................................................................................................. 10
Board Layout Diagram ............................................................................................................................. 10
Mounting - DDC2 / DDC4 Series................................................................................................................. 11
Mounting to a Wall ................................................................................................................................... 11
DDC2 .................................................................................................................................................... 11
DDC4 .................................................................................................................................................... 12
Mounting to a Single Gang Box ............................................................................................................... 12
DDC2 .................................................................................................................................................... 13
DDC4 .................................................................................................................................................... 13
Double Mount - Wall .................................................................................................................................... 14
DDC2 (Double Mount - Wall) .............................................................................................................. 15
DDC4 (Double Mount - Wall) .................................................................................................................. 16
Double Mount - Ceiling ............................................................................................................................ 16
Double Mount - Ceiling ............................................................................................................................ 17