Lathem DDC2 User Manual
Page 12
Digital Display Wall Clock Guide
Page 6
DIP Switch Settings
Table 1 - S1 (1-5) Secondary Clock Correction
1
2
3
4
5
Secondary Clock Selection
0=Closed
1=Open
*=Factory Default
0
0
0
0
0
Stand Alone *
1
0
0
0
0
3-Wire Synchronous
0
1
0
0
0
3-Wire Minute Impulse (59
th
Minute)
1
1
0
0
0
3-Wire Minute Impulse (59
th
Minute) With 12 Hour Correction
0
0
1
0
0
Standard Electric Synchronous
1
0
1
0
0
Standard Electric AR-2A - 2-Wire Dual Voltage
0
1
1
0
0
Standard Electric AR-2 - 2-Wire Dual Voltage
1
1
1
0
0
Cincinnati D8, Honeywell ST402A, Faraday Synchronous
0
0
0
1
0
Simplex 59
th
Minute Dual Motor
1
0
0
1
0
Simplex 45
th
Minute Dual Motor
0
1
0
1
0
Edwards Dual Motor
1
1
0
1
0
Standard Electric AR-3 - 3-Wire Minute Impulse
0
0
1
1
0
National Synchronous Wired
1
0
1
1
0
Stromberg Synchronous Wired
0
1
1
1
0
Cincinnati D1
1
0
0
0
1
Cincinnati D6, Edwards 2406
0
1
0
0
1
2-Wire Impulse Alternating (24VDC)
1
1
0
0
1
Electronic Coded (3510 Hz Receiver Required)
0
0
1
0
1
Straight Frequency (3510 Hz Receiver Required)
1
0
1
0
1
3-Wire Minute Impulse (58
th
Minute)
0
1
1
0
1
3-Wire Minute Impulse (44
th
Minute)
1
1
1
0
1
2-Wire Reverse Polarity Minute Impulse (59
th
Minute)
Table 2 - S1 (6-7) RS 485 Baud Rate
6
7
Baud Rate
0=Closed
1=Open
0
0
1200 Baud
1
0
2400 Baud
0
1
4800 Baud
1
1
9600 Baud *
Table 3 - S1 (8) 12 / 24 Hour Display
8
12 / 24 Hour Display
0=Closed
1=Open
1
12 Hour *
0
24 Hour
Note: When switches 1-5 are set for any
secondary type other than Stand-Alone, the
display is forced to 12 Hour and the PM
indicator does not illuminate.