Lathem DDC2 User Manual
Page 48
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DDC2 / 4-RS Wiring
Digital Display Wall Clock Guide
Page 42
3-Wire Minute Impulse (44
th
Minute)
B
R
N
/
W
H
T
GRND
AC IN
AC RTN
A
B
C
V
IO
/
W
H
T
Y
E
L
/
W
H
T
B
L
K
B
L
K
To
Other Clocks
24VDC
From
Master Clock
115VAC
Local
Power
OPEN
1
2
3
4
5
6
7
8
Set switches 1-5 of S1 as shown.
Indicates depressed side of switch
H
M
Clock must be set within 20 minutes of actual time
for master to synchronize. Use of a 9Volt alkaline
battery is recommended to avoid resets after power
failures.
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