Lathem DDC2-RS-24 GPS Receiver User Manual
Contents
1. If the LTR GPS will not be powered by an LTRx 512 Master Clock then insert the plug from the wall wart power adapter into its mating jack Plug the power adapter into a nearby AC outlet Verify that the red LED indicator flashes on during initial power up Observe the LED indicator on the LTR GPS unit for 3 minutes until a satellite signal is received upon which the light should start blinking each second A brighter flash should occur approximately every 16 seconds The LED not flashing as described above indicates that the antenna is disconnected that the antenna is improperly positioned or that power is not supplied to the unit Page 9 LTR GPS Installation and Setup Guide CHAPTER 4 Connect Slave Devices l 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 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 Be sure to maintain consistent polarity of the D D signals If the LTR GPS will be powered by a Lathem master control within a 200 foot proximity then connect another twisted pair to the terminals marked on both devices Fig 2 Secure the power and data cables to the LTR GPS2. Connect to DDC Series Digital Wall Clock DDC2 RS DDC4 RS Page 11 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 conditions of this warranty and the extent of the responsibility of Lathem Time Corporation Lathem under this warranty are listed below i This warranty will become void when service performed by anyone other than an approved Lathem warranty service dealer results in damage to the product This warranty does not apply to any product which has been subject to abuse neglect or accident or which has had the serial number altered or removed or which has been connected installed adjusted or repaired other than in accordance with instructions furnished by Lathem This warranty does not cover dealer labor cost for removing and reinstalling the machine for repair or any expendable parts that are readily replaced due to normal use The sole responsibility of Lathem under this warranty shall be limited to repair of this product or replacement thereof at the sole discretion of Lathem If it becomes necessary to send the product or any defective part to Lathem or any authorized service dealer the product must be shipped in its original carton or equivalent
3. 691 0405 www lathem com Page 12 Document USGO045A
4. fully insured with shipping charges prepaid Lathem will not assume any responsibility for any loss or damage incurred in shipping WARRANTY DISCLAIMER AND LIMITATION OF LIABILITY Except only the limited express warranty set forth above the products are sold with no expressed or implied warranties of any kind and the implied warranties of merchantability and fitness for a particular purpose are hereby expressly disclaimed No warranties are given with respect to products purchased other than from 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 In the event any limited remedy given herein shall be deemed to have failed of its essential purpose Lathem s maximum liability shall be to refund the purchase price upon return of the product Proof of date of purchase from Lathem or an authorized Lathem reseller is required for warranty service on this product This Warranty grants specific legal rights Additional legal rights which may vary by locale may also apply Should any difficulties arise with the performance of this product during warranty or with any Lathem authorized service centers contact Lathem Time at the address below Lathem Time 200 Selig Drive SW Atlanta GA 30336 404
5. unit using the tie wraps Fig 1 Connect the data cable s to Lathem slave time display devices to be controlled The twisted pair data cable can supply data for 31 max devices located within 4 000 feet Simply daisy chain the twisted pair from slave to slave maintaining consistent polarity for the D D signals A Lathem SWIFT485 RS 485 Bus Repeater allows for more than 31 devices or cable lengths beyond 4 000 feet Connect the Lathem slave devices using the twisted pair from the RS485 cable according to the User Manual instructions for each device If the LTR GPS will be connected to an LTRx 512 master control that is already in operation then the master will not immediately recognize the signal from the LTR GPS It will start recognizing the GPS signal within 15 minutes past midnight or after power up To accelerate the recognition process the installer may power off power on the Master by carefully removing the front panel and toggling the internal power switch or by briefly disconnecting the Master from its AC power source BE CAREFUL HAZARDOUS VOLTAGES ARE PRESENT Page 10 LTR GPS Installation and Setup Guide Fig 2 Connect to LTRx 512 Master Clock 4000 FT MAX 200 FT MA ae ELSE USE POWER ADAPTER SS Fig 3 Connect to LTR 0 or DWA S Sonachron _ YELLOW WHITE Xin us 2 J YELLOW YF zu e 4 if JS M WHITE UN p a NN Z CR 2 E c E N N LTR 0 DWA S Fig 4
6. LTR GPS Satellite Synchronizer Installation amp setup Guide LATHEM TIME 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 including interference that may cause undesired operation WARNING Changes or modifications to this product not expressly approved by the party responsible for compliance could void the user s authority to operate this equipment NOTE This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a business installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separatio
7. R GPS Receiver Module which should be mounted in doors The Receiver Module verifies and reformats the received satellite data and offers multiple synchronization protocol outputs The RS 485 Output can directly synchronize up to 31 Lathem time products up to 4000ft away over a single twisted pair from a user provided Cat 3 or Cat 5 cable The length of cable and number of synchronized devices can be further increased using Lathem s SWIFT485 RS 485 Converter Repeater An included RS 232 interface provides a periodic Time Stamp transmission 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 An LED indicator shows Signal Reception Protocol Mode The LTR GPS may receive its power from an LTRx 512 series Master Clock using 2 cable pair if the distance is less than 200ft else power is provided locally by a 9vAC Power Adapter Page 1 LTR GPS Installation and Setup Guide The LTR GPS package includes the following LTR GPS Satellite Synchronizer 115vAC 2 7w 50 60Hz Power Adapter Active GPS Antenna with 25ft Cable Antenna Mounting Bracket and Hardware LTR GPS Specifications S
8. ese signals confirm proper antenna placement and system functionality prior to anchoring the antenna bracket 3 One method is to attach the bracket mounted antenna to the outside of your building or on the roof s parapet with antenna facing skyward and unblocked by architectural impediments An alternate method is to mount the antenna indoors beneath a skylight window Do not mount the antenna directly on the roof surface where it might get submerged by storm water Its enclosure is rain proof when properly installed but is not designed for submersion 4 Insert supplied nylon tie wrap through raised loop of the plastic clamp at the end of the unit Fig 1 Do NOT close the tie wrap yet If plastic cable clamps are not already secured to the L TR GPS unit then attach where shown in Fig 1 by peeling off protective paper backing and adhering to the metal surface with firm pressure Allow the adhesive to set for 5 minutes before securing the cables GPS RECEIVER SYNCHRONIZER 200 SELIG DRIVE SW INTA GA 30336 USA 800 2 E LTR GPS Fig 1 LTR GPS Unit Page 8 LTR GPS Installation and Setup Guide 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 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
9. ize Weight 3 25 x 2 x6 6 1 Ib Power 6 12vAC DC 300mA max Certificates FCC Part 15 ICES003 Model numbers of the devices supported by LTR GPS LTR O 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 LTR GPS Installation and Setup Guide CHAPTER 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 can be viewed in the following order SWITCH SWITCH SWITCH SWITCH SWITCH SWITCH SWITCH SWITCH 1 2 3 4 5 6 7 8 Adjust Plain Text Standard Enable Output for Custom DST U S Time Zone Time Zone Protocols n DST 3 Set Time Zone switches 4 8 for the code representing the offset from GMT Greenwich Mean Time of your location For installations in the U S Canada and Mexico the codes are as follows SWITCH SWITCH SWITCH SWITCH SWITCH Time Zone Country Offset 4 5 6 7 8 Greenwich Mean 0 Hrs Closed OPEN OPEN Closed Closed Time Atlantic Time CAN 4 Hrs Closed OPEN Closed Closed Closed Eastern Time pee 5 Hrs Closed Closed OPEN OPEN OPEN Central Ti
10. me boe 6 Hrs Closed Closed OPEN OPEN Closed Mountain Time ee 7 Hrs Closed Closed OPEN Closed OPEN Pacific Time ox 8 Hrs Closed Closed OPEN Closed Closed Alaska US 9 Hrs Closed Closed Closed OPEN OPEN Hawaii US 10 Hrs Closed Closed Closed OPEN Closed Page 3 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 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 SWITCH Time Stamp 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 Page 4 LTR GPS Installation and Setup Guide CHAPTER 3 Install the Antenna The antenna must be installed in a position that will have line of sight wi
11. n between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected 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 Contents Welcomes o reris reece ose vas sev ess ce ead ns aus Ey Re bv Od re ged s PEOR dI Een Package Contents Specifications Configure Setlings wiccisiccecccuindsccecsacsancudacuiccventeanertedudcceantnenanancwens Time Zone Daylight Savings ASCII Output optional Install the Antenna ee ceeceeeeeee rennen nnn nnne n nnn Connect Slave Devices e ceeeeeeeer serene nana LTRx 512 Master Clocks LTRO and DWA S Sonachron DDC Series Digital Wall Clocks Lupi 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 Antenna which must be mounted out doors or beneath a roof sky light facing skyward An integrated cable links the Antenna to the LT
12. th three satellites f z m LTR GPS HAVING UN OBSTRUCTED s VIEW OF 3 SATELLITES 7 2 GLOBAL POSITIONING SATELLITES p eS IN GEO SYNCHRONOUS ORBIT aue ME Page 5 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 Proper locations for antenna mounting p Page 6 LTR GPS Installation and Setup Guide Avoid these locations when mounting antenna Using two 2 supplied screws attach the satellite antenna to the mounting bracket Do not over tighten the screws CABLE CLAMP STRAIN RELIEF MOUNTING BRACKET MOUNTING SCREW Page 7 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 Connect the antenna cable to the LTR GPS Module Hold the antenna in its intended mounting position If the antenna has exposure to the GPS satellites within three 3 minutes the LED will flicker and the beeper will chirp once per second Afterwards the LED should start flashing once per minute and the beeper will beep for 1 second Th
Download Pdf Manuals
Related Search