Lathem DDC4-RS-24 - Manuals

THIS EQUIPMENT COMPLIES WITH FCC CLASS-A REQUIREMENTS PURSUANT SUBPART J OF PART-15 This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received,...

Page 3 - Contents

Contents Welcome .............................................................................................................. 1 Package Contents Specifications Configure Settings .............................................................................................. 3 Time Zone Daylight Sav...

Page 4 - LTR-GPS Installation and Setup Guide; Welcome; Page

LTR-GPS Installation and Setup Guide CHAPTER 1 Welcome Lathem’s LTR-GPS is a Global Positioning Satellite receiver using 12-channels to access the accurate date and time signal transmitted each second by 24 satellites in geosynchronous orbit around the globe. The package includes an amplified GPS An...

Page 6 - C H A P T E R 2; Configure Settings; DIP switch

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. Locate the 8-position DIP switch and hold the unit on a table so that the switch numbers ...

Page 7 - Switch 2 is used for custom ordered protocols only

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...

Page 8 - C H A P T E R 3; 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 - Proper locations for antenna mounting:

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 exposur...

Page 10 - Avoid these locations when mounting antenna:

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 12 - indoor; surface within the 25 foot antenna

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 ...

Page 13 - C H A P T E R 4; Connect Slave Devices; A Lathem

LTR-GPS Installation and Setup Guide C H A P T E R 4 Connect Slave Devices 1. Connect a category 3 or 5 cable to the terminal block using a small, flat-blade screwdriver. Connect one of the four twisted-pairs of the cable to the D+/D- terminals on the LTR-GPS unit. This provides synchronization comm...

Page 15 - Warranty

LTR-GPS Installation and Setup Guide Warranty Limited One-Year Limited Warranty Lathem warrants the hardware products described in this guide against defects in material and workmanship for a period of one year from date of original purchase from Lathem or from an authorized Lathem reseller. The con...