Lathem DDC2, DDC4 manual DIP Switch Settings

Digital Display Wall Clock GuidePage 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 (59th Minute)
1	1	0	0	0	3-Wire Minute Impulse (59th 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 59th Minute Dual Motor
1	0	0	1	0	Simplex 45th 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 (58th Minute)
0	1	1	0	1	3-Wire Minute Impulse (44th Minute)
1	1	1	0	1	2-Wire Reverse Polarity Minute Impulse (59th Minute)

Table 2 - S1 (6-7) RS 485 Baud Rate

6 7 Baud Rate

0=Closed 1=Open

00 1200 Baud

10 2400 Baud

01 4800 Baud

11 9600 Baud *

Table 3 - S1 (8) 12 / 24 Hour Display

8 12 / 24 Hour Display

0=Closed 1=Open

112 Hour *

024 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.