Lathem DDC2 - Manual (Page 55)

Page 49 Digital Display Wall Clock Guide DDC2 / 4-RS -485 Wiring
LTR4 / 8-512 to DDC2-RS / 4-RS
Terminal # Signal Signal JP4 Connection
9 (D-) Transmit Data (-) Transmit Data (-) D-
8 (D+) Transmit Data (+) Transmit Data (+) D+
BLK
BLK
115VAC
Local
Power
To
Other Clocks
LTR4 / 8-512 Terminal Connections
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
OPEN
1 2 3 4 5 6 7 8
DDC2-RS / 4-RS - JP4 Connector
LTR4 / 8-512
D
+
D
-
D
- o
f J
P
4
D
+
o
f J
P
4
11 30 :
H
M