Lathem DDC2 manual Table of Contents

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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

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Contents Installation & Users Guide Lathem Time Corporation Table of Contents Page Page Page Clock Operation IntroductionAbout this Manual DDC-TC Optional AccessoriesPage Setting the DIP Switches DDC2 / DDC4 Series Configuring the DDC Series Wall ClockDIP Switch Settings Configuring RS485 Communications DDC2/4-RS Series Battery Usage DDC2 / DDC4 SeriesDDC2/4-RS / DDC2/4-RS-24 Power Cord Installation DDC2/4-RS Battery Installation DDC2 / DDC4 SeriesDDC-TC Wiring Wiring Installation DDC2/4-RS SeriesSecondary Wiring RS485 WiringReplacing an Existing DDC4 Wall Clock Board Layout DiagramMounting to a Wall Mounting DDC2 / DDC4 SeriesMounting to a Single Gang Box DDC2 Double Mount Wall DDC2 Double Mount Wall DDC4 Double Mount Wall Double Mount Ceiling DDC2 Double Mount Ceiling DDC4 Double Mount Ceiling Time Formats Setting the TimeAppendix a DDC2-RS / 4-RS Secondary Clock Wiring Diagrams BLKStand-Alone 115VAC WHT Wire Synchronous 115VACBLK BRN / WHT BLU / WHT Wire Synchronous 24VAC CorrectionGrnd AC RTNWire minute Impulse 59th Minute Grnd BLKYEL / WHT VIO / WHT BRN / WHT BLK YEL / WHT VIO / WHT BRN / WHT Wire Minute Impulse 59th Minute With 12 Hour CorrectionStandard Electric Synchronous BLK YEL Standard Electric AR-2A 2-Wire Dual VoltageStandard Electric AR-2 2-Wire Dual Voltage Synchronous Wired Simplex 59th Minute Dual Motor Simplex 45th Minute Dual Motor Edwards Dual Motor BLK YEL / WHT VIO / WHT BRN/ WHT Standard Electric AR-3 3-Wire Minute ImpulseNational Synchronous Wired Stromberg Synchronous Wired 56th Minute Cincinnati D1 CommonCincinnati D6, Edwards VIOGrnd AC RTN BLK VIO / WHT YEL / WHT Wire Pulse Alternating 24VDCElectronic Coded Grnd AC in AC RTN BLK BLUStraight Frequency Grnd AC AC RTN BLK BLUWire Minute Impulse 58th Minute Wire Minute Impulse 44th Minute VIO / WHT YEL / WHT Wire Reverse Polarity Minute Impulse 59th MinuteAppendix B DDC2-RS-24 / DDC4-RS-24 Wiring DDC2-RS-24 / DDC4-RS-24 Wiring RS485 Data Format Appendix C RS485 Wiring DiagramsOmcii to DDC2-RS / 4-RS OMCGND JP4LTR0 to DDC2-RS / 4-RS BLK HLTR4 / 8-512 to DDC2-RS / 4-RS + of JP4Wiring Appendix D DDC-TC Timer Control PanelTimer Control InstallationAs a Count Down Timer Operation As a Count Up TimerLTR-0 Appendix E LTR-GPS Satellite Receiver / Clock SynchronizerPage Connecting to a Lathem DDC2-RS or DDC4-RS Digital Clock DDC2 / DDC4 Appendix F SpecificationsLimited One-Year Limited Warranty Appendix G Warranty

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