Lathem DDC2-RS Installation And Setup Manual
Satellite synchronizer
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- Installation & user manual (63 pages)
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Summary of Contents for Lathem DDC2-RS
- Page 1 LTR-GPS Satellite Synchronizer Installation & Setup Guide...
- Page 2 - Consult the dealer or an experienced radio TV technician for help. This Class A digital apparatus complies with Canadian ICES-003. Cet appariel numerique de la classe A est conforme a la norme NMB-003 du Canada. Copyright © 2004 Lathem Time Corporation. All rights reserved. Document number: USG0045 Revision: A...
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Page 3: Table Of Contents
Contents Welcome ...1 Package Contents Specifications Configure Settings...3 Time Zone Daylight Savings ASCII Output (optional) Install the Antenna...5 Connect Slave Devices...10 LTRx-512 Master Clocks LTR0 and DWA-S (Sonachron) DDC Series Digital Wall Clocks Warranty ...12... -
Page 4: Welcome
“MM-DD-YYYY HH:MM:SS cr”, for use by computing systems having custom software to incorporate accurate date and time records in their applications: 9600, N, 8, 1. Use of this option requires Lathem cable, Part No. SAE0370, to be ordered separately. Simple DIP-Switch set-up enables the installer to specify Local Time Zone, Daylight Savings Time corrections, and output formats. -
Page 5: Specifications
Master Clock DWA-S Sonochron LTR4-512 Master Clock LTR8-512 Master Clock LTR8-512M Master Clock w/ Modem DDC2-RS 2” Digital Wall Clock 115v DDC2-RS-24 2” Digital Wall Clock 24v DDC4-RS 4” Digital Wall Clock 115v DDC4-RS-24 4” Digital Wall Clock 24v Page 2... -
Page 6: Configure Settings
LTR-GPS Installation and Setup Guide C H A P T E R 2 Configure Settings 1. Remove the two Philips-head screws on each end of the unit. Gently flex apart and lift the cover to expose the circuit board inside. 2. -
Page 7: Daylight Savings
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 SWITCH Savings Enable OPEN Disable Closed 5. Switch 2 is used for custom ordered protocols only. This should normally be left in the OPEN position. -
Page 8: Install The Antenna
LTR-GPS Installation and Setup Guide C H A P T E R 3 Install the Antenna The antenna must be installed in a position that will have line of sight with three satellites. Page 5... - Page 9 LTR-GPS Installation and Setup Guide After setting the LTR-GPS switches, then mount the active antenna. Locate the antenna at the highest elevation possible, with a wide view of unobstructed, open sky. If possible, avoid mounting the antenna on the north side of a building, which might block exposure to satellites.
- Page 10 LTR-GPS Installation and Setup Guide Avoid these locations when mounting antenna: 1. Using two (2) supplied screws, attach the satellite antenna to the mounting bracket. Do not over-tighten the screws. Page 7...
- Page 11 LTR-GPS Installation and Setup Guide 2. If you have Lathem’s Installation Kit (P/N GPS-INSTALL-TOOLS sold separately), then connect the 9v battery plug to the LTR-GPS’ power jack and the piezo beeper to the exposed shunt pins: Red to (+) and Black to (-).
- Page 12 LTR-GPS Installation and Setup Guide 5. Mount the LTR-GPS unit to an indoor surface within the 25 foot antenna cable length using four (4) screws and anchors if needed (not supplied). Do not attempt to extend this Cable. 6. Plug the antenna cable into the antenna jack on the LTR-GPS unit and secure the cable in the plastic clamp for strain relief (Fig.1).
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Page 13: Connect Slave Devices
Connect one of the four twisted-pairs of the cable to the D+/D- terminals on the LTR-GPS unit. This provides synchronization commands to the Lathem slave devices. Connect the other end of the selected pair to the SYNC_IN D+/D- terminals of a Lathem LTRx-512-series master control (Fig.2) or to Lathem DDCx Series digital wall clocks (Fig.4). - Page 14 4 0 00 FT. M AX 2 0 0 FT. M ELSE U SE Fig.3- Connect to LTR-0 or DWA-S (Sonachron) YELLOW WHITE YELLOW WHITE LTR-0 DWA-S Fig.4 - Connect to DDC Series Digital Wall Clock DDC2-RS / DDC4-RS Page 11 POWER ADAPTER...
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Page 15: Warranty
Lathem or an authorized Lathem reseller and any such products are purchased "as is, with all faults." In no event will Lathem be liable for any direct, indirect, special, incidental or consequential damages arising out of or in connection with the delivery, use or inability to use, or performance of this product. - Page 16 Document # USG0045A...