AllSync GPS User Manual
Contents
1. A second of time as measured by an atomic clock added to or omitted from official timekeeping systems annually to compensate for changes in the rotation of the earth LMT Local Mean Time the Mean Solar Time for any given longitude around the earth It differs at every longitude 1 hour change for every 15 degrees longitude LMT may or may not correspond with the local time in a given time zone Low E glass Low Emissivity Glass this type of glass features a unique surface coating that reduces the heat transfer through the window Such a coating can reflect anywhere from 40 to 70 of the normally transmitted heat while not inhibiting the amount of light that passes through the window However the metal oxide coating of Low E glass does not allow the GPS signals to pass through Thus mounting the GPS antenna inside a window with Low E glass is not recommended NIST National Institute of Standards and Technology The Time and Frequency Division part of NIST s Physics Laboratory maintains the standard for frequency and time interval for the United States and provides official time to the United States This includes traceability from the GPS timing signals to the NIST national frequency standard RS 422 Standard communications interface approved by the Electronic Industries Alliance EIA for connecting serial devices and supporting multi point connections This interface supports higher data rates and a higher immunity from interfere2. Installation and Operation Manual AllSync Master Clock GPS Option american CXCIME so Rev 3 Integrated Solutions March 2010 AllSync GPS Option User Manual American Time 140 3rd Street South PO Box 707 Dassel MN 55325 0707 Phone 800 328 8996 Fax 800 789 1882 american time com O American Time PATENTS User Manual sio REC 4 cr 5 TRU NV P 5 Psa aie the GPS PT a Scented egt prendas iiis mide en aspetti caen Soie eid ces ted 7 Connecting qe AllSyne N E ductu died cmo etd MD s iM cede 8 Contro the AllSyne M SEBE o nn a ted a ptas nes 9 cab os m 10 eene MM il en 11 IDEE occum ean mandi E Edda uM MN Eu NIMM UN CMM 12 American Time 3 Introduction AllSync GPS Option User Manual Introduction Installation D S 7 2 2 8 FE Specifications The GPS Option for the AllSync Master provides two main benefits 1 Time synchronization via the Global Positioning System the AllSync Master can be configured to receive timestamps from the GPS Antenna Receiver provided with the GPS kit 2 Automatic Time Zone Configuration via the Global Positioning System the AllSync Master can use the longitude position fix from the GPS Antenna Receiver to calculate LMT Loc
3. A time scale that forms the basis of a coordinated distribution of standard frequencies and time signals throughout the world It is often referred to as Greenwich Mean Time GMT or Zulu Time military and aviation American Time User Notes AllSync GPS Option User Manual Introduction Installation Troubleshooting Specifications Eee 13 American Time
4. around the connection making it watertight You may wish to wait until the GPS function is tested OK before completing this step 10 If the 15 meter cable is not long enough to reach from the AllSync Master to the GPS antenna procure 15 meter extension cables American Time amp Signal Co part H000818 and locate them between the cable provided with the GPS kit and the AllSync Master NOTE The cable that comes with the GPS kit should always be installed to the GPS antenna The total length of all cables should not exceed 1500 feet or 30 standard cable lengths Installation Connecting the AllSync Master Once you have routed the cable to the AllSync Master make the connection from the female 12 pin connector on the cable from the GPS antenna to the male 12 pin port on the AllSync Master The GPS port is the middle socket on the left side Troubleshooting Specifications GPS cable installed to GPS port on AllSync Master 8 American Time AllSync GPS Option User Manual Configuring the AllSync Master Once you have the GPS hardware installed the GPS feature should function Perform the following steps to ensure the feature is working properly 1 After installation verify the GPS function is enabled On the AllSync Master press PROG 5 2 XXXX user code and 1 Then press BACK to exit the GPS menu At this point the BACK key brings you to the main time screen in present version Now verify the signal
5. the GPS option and with GPS communication enabled models ASMA00G ASMA02G ASMA04G ASMA06G ASMA00M ASMA02M ASMA04M and ASMAO06M GPS kit part H000817 including a Part H0004381 GPS Smart Antenna Receiver b Part 4 H001202A GPS Cable 50 foot c Part H006214 Shrink tubing for water tight connections d Part H000835 GPS Antenna mounting bracket For Mast Installation Pipe Tubing or other cylindrical object for use as an antenna mast not included with GPS kit to be furnished by customer or installer along with necessary mounting hardware to fix the mast to the building or other structure GPS Extension cable s if needed each 50 foot part H000818 Figure 1 page 6 is an exploded view diagram showing the various components in the GPS kit in this case for a mast installation Refer to the part numbers in the included table for reference American Time Installation uononpoanu uone e1SUI E c o i 77 Ss ES gt suoneoyi2ods Installation AllSync GPS Option User Manual Figure 1 GPS Kit Exploded View Introduction E s T ie 4 D 5 7 i 2 x 2 P a 7 ITEM NO PART NUMBER Description QTY ciel 1 H004381 1 Bracket GPS Antenna Mount 28 mm hole 1 TT 2 H004381 2 GPS Smart Antenna Synergy Systems 10001510 1 3 H000835 2 Pipe not supplied
6. to force an update O American Time Installation uononponu uonejeisu E fe c z 2 Ss c gt a suoneoyi2ods DONS NS Introduction E ES T E 4 D e 7 2 gt Specifications 10 If you have trouble synchronizing to GPS follow these troubleshooting steps If GPS antenna has been connected to the AllSync Master for less than 25 minutes the GPS time signal may be inaccurate Allow more time and try again Check GPS cable connections between master and GPS antenna Replace any damaged cables and verify the connectors are securely locked together If no signal has been received after checking the status and configuration move the GPS antenna to a better location and follow the installation and configuration steps again 4 Ensure the GPS update function is enabled step 1 under Configuring the AllSync Manager Inspect the GPS Antenna for damage Look for signs of lightning strikes or falling debris Look for obstructions to the Antenna s view of the sky and remove them if possible example tree branches Clear any snow or ice off the GPS Antenna and surrounding areas If the GPS Antenna is installed behind a Low E glass window or skylight try another location or replace the glass if possible If the problem cannot be resolved after following these steps please call Technical Support at America
7. al Mean Time This feature was specially designed for use by ships at sea that move through many time zones The Global Positioning System GPS is a constellation of satellites providing specially coded radio signals that can be processed in a GPS receiver enabling the receiver to compute position velocity and time The GPS kit from American Time amp Signal Co includes such a receiver which computes the time and transmits this via RS 422 communication to the AllSync Master The U S Naval Observatory USNO monitors the timing of the Global Positioning System GPS to provide a reliable and stable coordinated time reference for the satellite navigation system GPS time is automatically steered to UTC USNO on a daily basis to keep system time within one microsecond of UTC USNO However after processing the timestamps from the GPS Antenna Receiver the AllSync Master maintains the time within approximately one second of UTC Once configured with the GPS option and properly enabled the AllSync Master automatically updates its timekeeping to the GPS receiver once per hour on the 4th minute of each hour Manual synchronization can also be performed by using the ADJ key on the AllSync Master refer to the AllSync Master Operation Manual O American Time AllSync GPS Option User Manual Requirements The following are requirements for installation of the GPS Option for the AllSync Master 1 4 AllSync Master s configured with
8. glass so avoid installation behind such glass Also keep in mind that snow ice or debris may at times cover some skylights or obscure the view from windows d Avoid installing the GPS antenna in locations near high power transmitting antennas The receiver is designed to filter out unwanted frequencies but avoiding locations near transmitting antennas is prudent to avoid possible harmonics that may be within the passband of the Antenna Receiver e To avoid lightning strikes it is recommended that the GPS Antenna be installed in an area where it is not at the highest point and so that any lightning rods are well above the antenna The GPS Antenna is not designed to withstand a direct hit from lightning although it has protection to survive the Sunoouso qnoil secondary effects of lightning f The GPS antenna is environmentally sealed and able to withstand harsh climates However if installing in climates where significant snowfall is possible mount the GPS Antenna high enough so it does not get suoneoyiooedsg buried by snow or ice which may cause damage to the unit or impede the GPS signal 2 Fix the anodized aluminum mounting bracket item No 3 in Figure 1 to the building or antenna mast a If using a mast it should be made from 1 schedule 40 pipe or any rigid tubing or conduit with an outside diameter of 1 5 or less Using the U bolt hex nuts and lock washers supplied with the mounting bracket fix the bracket to the mast
9. n Time amp Signal Co at 1 800 328 8996 American Time Spseincspons User Manual GPS Antenna Receiver Specifications 5 Physical Characteristics BINE oet MAU M ETE EUN 4 deep x 3 high 102mm x 76 mm S W ig aio 14 oz 0 4 kg 9 Housing Materials Cycolac ABS Radome Aluminum base Pigtail Cott immense Approx 20 0 5 m Electrical Interface a Extension Cable Connectors Deutsch MMP21 2212S1 12 pin Male 12 pin Female Antenna Connector Binder M16 423 12 pin Male 9 Mating Connector iudei esset ddos Binder M16 423 12 pin Female Power Specification e cierto teta 49v to 30vdc 70mA Max 7 Power Supplied ee ti menit 13 6vdc 3 Max Extension Cable Length 1500 ft 457 m Commandes RS 422 Environmental Conditions B Operating Temps 40 F to 167 F 40 C to 75 C Storage LR 40 F to 185 F 40 C to 85 C Relative Humid yis ms 85 non condensing at 22 F to 140 F 30 C to 60 C o o o E O 9 3 American Time 11 AIIS GPS Opti Glossary of Terms Introduction E Ld amp E 7 Troubleshooting Specifications 12 GPS Global Positioning System a constellation of satellites operated by the United States Military US Naval Observatory that broadcast precisely timed signals from space These signals are used for extremely accurate global navigation as well as the distribution of precise time Leap Second
10. nce than RS 232 and is used for the communication between the AllSync Master and the GPS receiver Shrink Tubing Tubing which has been extruded cross linked and mechanically expanded which when reheated will return to its original diameter For this GPS kit it is used to protect the electrical and communications connections from water etc It can be easily installed over the connectors and will shrink tightly over them after being heated Synchronization The process of bringing 2 clocks or time sources into phase so their difference is zero In the case of a timekeeping system time synchronization takes place between the master clock and all secondary clocks In addition in the case of the GPS timekeeping option the master clock AllSync Master is synchronized to the GPS time source so the time output of the master is matched to the NIST time standard Timestamp A time mark or notation that indicates the date and the time Navigation Message A message transmitted by each GPS satellite containing its orbital elements clock behavior system time and status messages USNO The U S Naval Observatory a organization within the United States Navy which determines precise time and maintains the Master Clock for the United States The USNO monitors the timing of the Global Positioning System GPS to provide a reliable and stable coordinated time reference for the GPS satellite navigation system UTC Universal Coordinated Time
11. see Figure 1 NOTE The Mast must be grounded b If attaching the mounting bracket directly to a structure wall roof or other fixed structure select proper fasteners and washers to securely fix the bracket 3 Unthread and remove the nut item No 7 in Figure 1 from the GPS Antenna 4 Take the GPS Antenna item No 1 in Figure 1 with rubber washer item No 8 in Figure 1 and place on top of the mounting bracket feeding the antenna cable through the hole in the mounting bracket 5 Secure the GPS Antenna to the mounting bracket using the nut item No 7 in Figure 1 you removed in step 3 6 Route the 15 meter approx 50 ft cable item No 9 in Figure 1 from the GPS antenna to the AllSync Master Use cable ties or other suitable method s to secure the cable American Time 7 Installation AllSync GPS Option User Manual Before connecting the cable to the GPS antenna feed the shrink tubing item No 9 in Figure 1 around the end of the cable Make the connection from the 15 meter cable to the GPS Antenna the 12 pin connectors are keyed so they align properly The male 12 pin connector of the GPS Antenna should mate to the female 12 pin connector of the 15 meter cable Complete the connection with a clockwise twist of the connector sleeves which locks the cables together E E T o Slide the shrink tubing in place so it is centered over the connectors and use a heat gun to shrink the tubing
12. status On the AllSync Master press PROG 5 1 OK You should then be able to view the last timestamp received if applicable and the number of satellites in view as reported from the GPS Antenna Receiver Press OK OK and BACK to exit the GPS menu If no satellites are reported in view follow the troubleshooting instructions Now adjust the time via GPS On the AllSync Master press ADJ The unit should display 2 GPS Sync Now NOTE If it shows anything else change the Time Sync Priority by pressing BACK PROG 7 XXXX user code OK 3 Now you should select option 1 for GPS Use the BACK key to exit to the main screen and press ADJ Press 2 to sync the time to GPS The unit will respond with a message confirming the sync was successful and the time should automatically set NOTE You may have to wait for up to 25 minutes for the time to sync accurately to UTC time NIST since the initial GPS time received will not account for leap seconds This is a nature of the GPS message the current leap second difference from GPS time is only broadcast once in a 12 5 minute Navigation message As of December 31 2008 GPS time is ahead of UTC by 15 seconds Therefore until the leap second correction is received the AllSync Master will report the time 15 seconds ahead of UTC time The unit is now configured and will update the internal clock of the AllSync Master every hour on the th minute or whenever the ADJ function is used
13. with kit 1 4 H000835 3 U bolt 1 4 20 supplied in kit 2 5 H000835 4 Nut GPS supplied in kit 1 6 H000834 2 Washer Rubber spacer 1 7 H000835 5 Lock Washer 1 4 4 8 H000835 6 Hex Nut 1 4 20 4 9 H001202A 50 ft cable 1 6 O American Time een User Manual Mounting the GPS Antenna Follow these steps to mount the GPS antenna 1 Determine a suitable location a The GPS Antenna with integrated receiver is designed for outdoor installation in a location with a full view of the sky For best results attach the antenna to an outside wall or to a mast on a roof b It is best to pick a location unobstructed by trees branches power lines other buildings etc However only one satellite is required to be in view of this antenna to obtain a valid timestamp so it may be possible to locate the antenna in an area with a limited view of the sky If you wish to mount the GPS antenna in a location with a limited view of the sky it is recommended that you test che GPS functionality before permanently affixing the antenna in this location NOTE At least three satellites gt a c 1 e 3 uoneje1su are required for fixing a position for the purposes of computing LMT Local Mean Time c While not ideal locations skylights or windowsills may be possible options for installation However note that the GPS signal has difficulty penetrating the metal oxide coating of Low Emissivity glass known as Low E
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