Lathem DDC4 manual Blk H, LTR0 to DDC2-RS / 4-RS

DDC2 / 4-RS -485 Wiring Digital Display Wall Clock Guide Page 48

LTR0 to DDC2-RS / 4-RS

115VAC	BLK
Local
Power	BLK H
	M

LTR 0

BLK

ORN

GRY

LTR0 Fly Leads

GND	D+ of	D- of
of JP4	JP4	JP4

To

Other Clocks

DDC2-RS / 4-RS - JP4 Connector

Wire	Signal	Signal	JP4 Connection
Gray	Transmit Data (-)	Transmit Data (-)	D-
Orange	Transmit Data (+)	Transmit Data (+)	D+
Black	Signal Ground	Signal Ground	GND

Cable should be RS232 twisted pair / CAT3 or CAT5 type. Maximum distance to last DDC Clock is 4000 feet.

Last DDC Clock must have jumper installed on position J2. See page 8 for details.

Set switches 1-5 of S1 as shown.

Indicates depressed side of switch

1 2 3 4 5 6 7 8

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