Lathem DDC4-RS-24 - Manual (Page 7)

LTR-GPS Installation and Setup Guide
4. Set Daylight Savings Time switch 3 according to the following table to enable
U.S. rules: 2:00AM first Sunday in April and last Sunday in October:
Daylight
Savings
SWITCH
3
Enable OPEN
Disable Closed
5. Switch 2 is used for custom ordered protocols only. This should normally
be left in the OPEN position.
6. If using the RS232 port (requires cable # SAE0370, sold separately) to
transmit a plain text “time stamp”, OPEN switch 1 to select Local Time
transmission. Close switch 8 to transmit GMT.
RS-232
Time Stamp
SWITCH
1
Local Time OPEN
G.M.T. Closed
Format for ASCII output: “MM-DD-YYYY HH:MM:SS cr”.
Communications Port Settings: 9600, N, 8, 1
7. Re-align and gently flex apart the cover to replace it over the chassis, making
sure that the circuit board connectors protrude through the appropriate side
cut-outs. Secure the cover with the four (4) screws previously removed.
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