Digital Display Wall Clock Guide | Page 10 |
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Replacing an Existing DDC4 Wall Clock
When replacing an older style DDC4 Wall Clock it will be necessary to remove any connectors used by the older style clock and attach the wires to the new DDC Series Wall Clock as described above.
Board Layout Diagram
Hours
Minutes
Up
Down
Ground
Beeper
D-
D+
J4
J3
Fly Lead |
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Connector Jumper |
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J1 | J2 | DIP Switch |
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| S1 |
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| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
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| OPEN |
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JP2
Lathem Time Corp.
DDC2\4(E-PROM)
JP4
JP1
9VDC Alkaline Battery
Cradle
-+
JP3
J2 | J2 |
Factory Default | Install shunt on |
Off | last clock for RS485 connections |
| Figure 2 |