GPS200A User Manual
Contents
1. The GPS200A incorporates a configurable relay closure to signal alarm conditions There are two modes J3 pins 1 amp 2 closed Relay N O on valid time Closes on alarm or power loss J3 pins 2 amp 3 closed Inverted operation DUAL TIME CODE OUTPUT CONSIDERATIONS Time code will always be simultaneously available on the unbalanced and balanced RS 422 differential time code outputs When unbalanced time code output is jumpered for SMPTE or IRIG B unmodulated the same signal will also be present on the balanced output As a special case when the unbalanced output is jumpered for IRIG B 1 modulated the IRIG B unmodulated will still be available on the balanced output pins This will be useful in situations which require both formats of IRIG B output simultaneously DB 9 CONNECTIONS Pin 1 Pulse Out TTL level 100ms active low pulse generated once per second by the GPS receiver The negative going edge of the pulse is aligned with UTC Greenwich Mean Time when the receiver has a 3 dimensional GPS satellite fix This pulse is not available when the GPS200A is first powered on The pulse may become unavailable if the receiver loses GPS satellite fix for an extended period of time Accuracy of this pulse when synchronized to GPS satellite is nominally lus Pin 2 RS 232 RX RS 232 receive line Pin 3 RS 232 TX RS 232 transmit line Pin 4 Relay Common Dry contact closure common Pin 5 Ground Conn2. Local time in the US and some other countries can also be offset by Daylight Saving Time DST whereby the local time is advanced by 1 hour in the Spring of the year and set back in the Fall UTC is not affected or changed by any of these local variations The GPS200A can provide offset to local time Hour offsets of 11 to 12 hours including Y hour offsets can be configured via a switch bank on the GPS200A board U S and Canadian daylight savings time adjustment can also be enabled Other daylight savings offsets can be provided on special order Additional time zone and daylight saving time configurations can be programmed via the GPS200A s RS 232 interface TIME CODES SUPPORTED The GPS200A supports configurable output of three major TC formats All of these TCs work well and all are in use in thousands of locations throughout the world If your operation installation or facility is currently using a particular type of TC it is probably best to continue using the same TC SMPTE Defined by the Society of Motion Picture and Television Engineers It is available in frame rates of 30 25 and 24 frames second The GPS200A supports all three formats All formats of SMPTE time code generated by the GPS200A carry full date information in the user bits as defined by Leitch Inc The GPS200A does not support generation of SMPTE drop frame time code Masterclock Inc does not provide products with or support for drop frame capability
3. described earlier on off amp then on the unit will probably work If you continue to have problems even after the above precautions have been noted please contact the factory GPS200A Feb 2007 7 MASTERCLOCK INC PC BOARD LAYOUT GPS 200A C WCLARK amp ASSOC LTD 1998 ST CHARLES MO 63301 pers NY 0 GPS RECEIVER ew J2 wa S1 H IIIAIIANTIDN jE J ALA UD D J 0 Er J SW1 B SPECIFICATIONS OUTPUT TIME CODE Pina LTC Longitudinal Linear Time Code forward running Eo aciertan SMPTE 24 25 or 30 fps NDF Non Drop Frame A A E Approx 2 Vpp COMMECTOL coccccconnconnnannnnnonnncnnoo DB 9 pin 6 Single Ended Unbalanced pin 5 associated return signal ground Forbes IRIG B 1 1kHz amplitude modulated IEA E wielded Approx 5V Vpp COMMECTOL coccoccnnnconcncnnnancnnncnnoos DB 9 pin 6 Single Ended Unbalanced pin 5 associated return signal ground Format sacs ntiet nes IRIG B pulse width coded Leveltiss EEEE Approx 5V Vp COMMECTOL 0 eee eee eee eeeeeee DB 9 pin 6 Single Ended Unbalanced pin 5 associated return signal ground O OS SMPTE 24 25 or 30 fps NDF Non Drop Frame Levels RS 422 balanced 5V differential COMMECTOL coccocccnnconnnannnanonancnnoo DB 9 pin 7 and 8 Eonia IRIG B pulse width coded
4. receive has not changed significantly since last power down then the unit will startup much faster ANTENNA LOCATION Depending on the type of building where the GPS200A is located and obstructions that may block reception of signals from the GPS satellites the antenna may have to be located where it has an unobstructed view of the sky In some cases this can be accomplished by placing the antenna adjacent to a window In most cases it will require mounting it outside of the building or on a roof In the worse case the basic requirement for assured system operation is that the antenna module have a clear and unobstructed view of the sky for initial satellite acquisition and lock generation of time code by the GPS200A It is possible that the system will operate indoors and under other obstructions however this can only be determined empirically it is not guaranteed If a longer cable is required cables of various lengths up to 500 feet with pre amplified antennas are available from Masterclock Bringing the GPS200A up for the first time with an indoor antenna may prevent or significantly increase the time to first fix TIME CODE INTERCONNECT CABLE The time code signals are audio signals similar to that of a modem This time code signal can be routed over unshielded wire like a telephone or if desired over a RG 58 59 coaxial cable The GPS200A generates time code on pin 6 of the male DB 9 connector located on the rear of the unit Pin 5 is
5. GPS200A MASTER CLOCK IRIG B SMPTE TIME CODE GENERATOR Masterclock Masterclock Inc Tel 636 724 3666 Fax 636 724 3776 2484 W Clay St St Charles MO 63301 O Masterclock Inc Feb 07 Printed in USA TABLE OF CONTENTS DISCLAIMER oraora ss estes ei sates shies ete vite ates Cont vs an aloes a aves ool cas ieee eat c ADVISORY NOTICE ooo tar er aA eee c INTRODUCTION pensi nnen oaaae e I asl eect ele ede ties aii 1 GPS Satellite bad 1 UTC Green wich TIME ia dai 1 Time Zones amp Daylight Saving Time ooooonnccnnccnoonnnoncnoncnonoconononoconoconncnnncnnncnnnnnnn cnn nrnnnrnnnrnnccnn anos 1 TIME CODES SUPPORTED ui 1 SIMPLE 202 ii E N IA dencia 1 TRIG B rmac AA eel a 1 INITIAL OPERA TION cuota ci eel 2 Operating The GPS200A For The First Time ooooonnccnnncnnocnnoncnonononononoconoconccnnn conc crac nrnnnrnnnrnn cnn noo 2 Antenna Location iii AA A Ls e 2 Time Code Interconnect Cables icoccconoconiocoscit e i i ai i desat 2 Initial Operations and I O Connections eee essecssecsecssecsseceseceseceseeeseeeseeeeaeeeaeeeseesseeeaaeenaees 2 NORMAL OPERATION ninini a nish ew ais ated Sats ee sealed eels tole ht ee 3 EREEWHEELIN Gossaert Ae dba ene se Sea en Mecano 3 Freewheeling Non Locked LED Indication ceseceseceseceseceseceseeeeeeeeneesaeeeneeeaeeeaaessaees 3 HARDWARE teu moan eee bettas a llas pas da 3 A A gece dake saad seeds ele ete aie eee 3 Access to PE Do A A Cul ER coh utes ie 3 OPERATIONAL MODES forse se eee i
6. IRIG B Defined by the Range Commanders Council U S Army White Sands Missile Range The format is used by military government power industry and many other commercial and industrial applications The GPS200A generates IRIG B in both a 1kHz modulated and unmodulated pulse width coded format All formats of IRIG B time code generated by the GPS200A carry time of year information BCD binary coded decimal All formats of IRIG B time code generated by the GPS200A also carry extended year date and time zone information in the control functions CF as defined by the IEEE 1344 specification GPS200A Feb 2007 1 MASTERCLOCK INC INITIAL OPERATION The GPS200A was thoroughly tested with its external power supply PS and antenna prior to shipment Installation and setup is simply a matter of connecting the antenna and PS OPERATING THE GPS200A FOR THE FIRST TIME When the GPS200A is initially powered up after having been shipped to a new location the time to first fix time the unit takes to acquire satellites and extract correct local time could be up to 25 minutes although it is typically 5 15 minutes Factors such as atmospheric conditions type of antenna antenna location and antenna cable length will affect the time to first fix The GPS200A s GPS navigation module has a backup battery that maintains startup data when the unit is powered down If when starting up the location time and number of satellites that the unit can
7. L INCIDENTAL OR CONSEQUENTIAL DAMAGES WHETHER BASED ON CONTRACT TORT OR ANY OTHER LEGAL THEORY In any state or province which does not allow the foregoing exclusion or limitation of incidental or consequential damages the customer may have other remedies HARDWARE SERVICE You may return your GPS 200A to MC for repair service Please contact the factory for return authorization before returning the unit GPS200A Feb 2007 11 MASTERCLOCK INC
8. PS200A could destroy the GPS receiver module This is a major repair cost which is not covered by warranty The unit is tested and shipped with the appropriate cable for the antenna that was ordered Should you require a longer antenna cable we recommend that you contact MC so that a properly matched cable and antenna can be supplied Although changing the GPS antenna or coaxial cable is not technically difficult you are on your own should you decide to make such changes We do not warrant or support operation with any hardware not installed or supplied by us ANTENNA COAXIAL CABLE The coaxial cable should not be crushed crimped or bent at a sharp angle nor should it be strained by pulling Any damage to the cable could result in the GPS200A not functioning properly If the cable is to be coiled for storage the coil diameter should be at least 6 PROBLEMS TROUBLE SHOOTING All GPS200A units are checked for proper operation before shipment and unless physical damage is found the unit is probably functional Please remember for an initial startup at a new location the unit could take up to 30 minutes After the unit has acquired satellites at the new location the startup time is greatly reduced to anywhere from a few seconds to several minutes If the antenna and coaxial cable has not been damaged and has an unobstructed view of the sky the power connector is properly installed and the front panel LED follows the startup sequence
9. ado ta eee eat ati ii 11 EEX CIUSIOMNS Crit An AAA A TA 11 Warranty LIMON ni A a A ee SE ee 11 Exclusive Remedies orto e raaa desta taa 11 HARDWARE SERVICE cuco inicial cent eee eh oa i eect eee 11 GPS200A Feb 2007 b MASTERCLOCK INC DISCLAIMER The information contained in this document is subject to change without notice Masterclock Inc hereinafter MC makes no warranty of any kind with regard to this material including but not limited to the implied warranties of merchantability and fitness for a particular purpose MC shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing performance or use of this material MC is not responsible for legislative changes to the Daylight Saving Time DST rules nor to the systems relying on accurate time which may be affected by such changes Issues related to legislative changes to the DST rules are not covered under the Masterclock Inc limited warranty See important limited warranty information starting on page 11 ADVISORY NOTICE CONCERNING GPS SATELLITE SYSTEM AND THE GPS200A TIME CODE GENERATOR Depending on many factors beyond the control of MC the signals that are received from the GPS Satellites are subject to interference fading satellite failure and other influences that could cause the GPS200A to generate erroneous time and or date information and under some conditions could prevent it from gener
10. ating a time code signal and or cause it to generate an erroneous time code signal It is the responsibility of the user to determine the adequacy and suitability of this device for the intended use GPS200A Feb 2007 c MASTERCLOCK INC INTRODUCTION The GPS200A is a precision IRIG B or SMPTE time code generator that provides a source of very stable time code hereinafter TC and accurate time and date information It receives reference time information from Atomic Clocks in the GPS Global Positioning System satellites GPS SATELLITES The GPS satellites are operated and maintained by the US Department of Defense and allow for the precise determination of local time and location at any point on or above the Earth This is accomplished via the transmission of very accurate timing information from a series of satellites that provide coverage of the entire planet The GPS200A extracts timing reference from these signals and generates time code that is synchronized to within less than 10 microseconds of UTC Universal Coordinated or Greenwich mean time UTC GREENWICH TIME UTC is the local time at the prime reference meridian at Greenwich England At a given location on the planet local time can be displaced referenced to UTC by 11 to 12 hours North and South America are from 3 to 11 hours delayed most of Europe and Africa and all of Asia and Australia are advanced by 1 to 12 hours TIME ZONES amp DAYLIGHT SAVING TIME
11. eamless it does not interrupt time code output FREEWHEELING NON LOCKED LED INDICATION During a freewheeling period the front panel LED will flash twice each second HARDWARE OPERATING ENVIRONMENT The GPS200A is not water or moisture proof Treat it as you would any other delicate electronic device and do not expose it to water excessive heat or physical abuse particularly when using the unit as a portable TC generator ACCESS TO PC BOARD In order to gain access to the pin jumpers it is necessary to remove the case from the GPS200A This is accomplished as follows First disconnect the DC power if applied Although the highest voltage inside the GPS200A is 12 to 28 VDC which is generally not dangerous to touch accidentally shorting a trace or wire inside the unit with power on could destroy or damage any one of the extremely sensitive electronic modules Accidentally shorting a wire or trace or subjecting the unit to a static discharge even for a very small fraction of a second can destroy these modules Such damage is not covered by the warranty Remove the two outside Phillips screws in the rear panel this is the end with the power and antenna socket and DB 9 connector Holding the case of the unit in one hand slide the rear panel assembly outward from the rear The entire rear panel assembly and PC board will slide out GPS200A Feb 2007 3 MASTERCLOCK INC As was mentioned above the PC board is sensitive
12. ect this pin to the ground of any host communicating to the GPS200A via RS 232 Also connect this pin to the ground of any device decoding time code from the GPS200A s unbalanced time code out pin 6 Pin 6 Unbalanced Time Code Out Jumper J2 must be switched to properly route generated time code to this pin Pin 7 amp 8 Balanced Time Code Out RS 422 balanced 5V differential time code output SMPTE or IRIG B unmodulated pulse width coded time code is available here per time code output configuration Pin 9 Relay N C or N O Dry contact closure N C or N O depending upon configuration Shipped from factory configured as N C COMMUNICATING VIA RS 232 The GPS200A supports a robust protocol for determining operation status The following lists some of the information available to the user GPS200A Feb 2007 6 MASTERCLOCK INC GPS200A status bits GPS receiver diagnostics GPS fix status and type UTC and generate time including frame rate output Enhanced time zone and daylight savings time configuration capability The full GPS200A RS 232 protocol specification is available for download at the Masterclock home page on World Wide Web http www masterclock com See the GPS200A folder in the Downloadable Files area PRE AMPLIFIED ANTENNA The GPS200A requires a pre amplified antenna It provides 5 VDC via the center pin of the coaxial for remote power Warning Attaching a passive non pre amplified antenna to the G
13. es ee ae de ede ee oe ee eel oe 4 Configuring Operation Via On Board Switches 0 ce eesceseceseceseceeeceseeeseeeeeeeeaeeeaeeeneeeaaesnaees 4 Time Code routing Configuration 0 cece eseescesecsseceseceseceseceseceseceseesseeeseeseneeeaeeeseesseeeaaeenaees 5 Relay Configuration citar e ecw tos fos CIA e Saca 6 Dual Time Code Output Considerations 0 eee essecssecsseceseceseceseceeceseeseeeesneeeneeeseesaeesaaeenaees 6 DB 9 CONNECTIONS coria saensdt siete tipa ri ri iaa 6 COMMUNICATING VIA RS 232 inean iii ci let 6 PRE AMPLIFIED ANTENNA cid aia 7 Antenna Coaxial Cable A a ota 7 PROBLEMS TROUBLE SHOOTING erie oparit eeaeee anere ne riae e aa a aeae 7 PC BOARD LAYOUT cuina a in a lade a a ada ee 8 SPECIFICATION S ici A EE A ms dee idee A IA AN es 8 Output Time Code a i ii a a eae 8 Timing Characteristics iiep ekrir lea dias e aip eiee easy bn een oda ean ade 9 Power Supply Requirement onnenn e seii iner iare reie 9 Physical A E E ERE A 9 Environmental sonnern ar A eee eee 9 Antenna Mputa aaeei e aaia eta eia A gious EE Aa eaa E oa Na EE ia 9 PRE AMPLIFIED Antenna Standard ooooocccnnnoccccnononnnonononnnononnnnncnnnonnnccononnnononnnnncnnnn nn nc cnnnnnnnos 9 Coaxial ANTENNA Cable Standard Package ccccssccssseecesecesseceeaeceeneeceeeeesaeceeaeeceeeeeesas 9 ANTENNA MOUNT KIT Standard oooconoconnocnnoncnoncnonconncnnononoconocnnncnnncnn nana nnnn cra nrnnnrnanrnnncnn anos 9 OPTION Sidi tn A a 10 LIMITED WARRANTY ts mat
14. eve nui ca RS 422 balanced 5V differential COMMECTOL coccocccnncconcnnnonnninnninnos DB 9 pin 7 and 8 GPS200A Feb 2007 8 MASTERCLOCK INC TIMING CHARACTERISTICS Reference nen t UTC GMT default Date SMPTE nosses Included in user bits per Leitch specification Date Year IRIG B Included in control functions CF per IEEE 1344 specification Short term accuracy 0 10 us when locked Long term stability Same as GPS atomic clock when locked PPS pulse per second 100mS pulse width TTL level negative edge going with 1 uS accuracy relative to GPS time available on Pin 1 of DB 9 connector pin 5 associated ground signal return POWER SUPPLY REQUIREMENTS Input Voltage ooooconocccnonncnnncoo 12 to 28 VDC Input Power Connector 2 mm male power jack center pin Power Consumption 12V 220 ma 2 64W PHYSICAL Ii ee 1 5 x 4 1 x 5 5 in 3 8 x 10 4 x 14 cm Weight 2 ccdsecitictacavnceties 17 oz 480 g ENVIRONMENTAL Temperature operating 0 to 70 C Temperature storage 40 C to 85 C Humidity oes Up to 90 Non Condensing 25 C ANTENNA INPUT CONNECIOR suite SMA Female Center PIN cuisine 5 VDC power for external pre amplified antenna PRE AMPLIFIED ANTENNA STANDARD Frequency cocccoccoccconncancncncnnncnnoos 1575 MHz 10 MHz Polarization eee eee Right Hand Circular I
15. he GPS200A will begin generating time code and the LED will blink on and off once each second the start of each on period is in precise time alignment with UTC and with the on time mark of the selected time code output FREEWHEELING During continuous operation it is likely that the unit will experience outages and loss of satellite reference time This can be caused by atmospheric and many other outside conditions which are essentially unavoidable with a simplex system Such signal losses can last from a few minutes to hours When the condition disappears and the unit re acquires satellite timing reference it will automatically resync to the satellite time reference During such outages the GPS200A will continue to generate time code TC referenced to the last available satellite timing information This mode is referred to as freewheeling When the unit first acquires satellite time it calibrates an internal reference oscillator against the incoming atomic time During freewheeling the generated time code will be referenced to this calibrated oscillator and will typically be accurate to within a few milliseconds over a 24 hour period if the power is not disconnected As is covered in other areas of this instruction book the freewheeling status is encoded decoded by the TCRSYNC software supplied by MC and the operator is given the option of synchronizing to the TC during the freewheeling state The transition to and from freewheeling mode is s
16. le If MC receives notice of such defects during the warranty period MC will at its option either repair or replace products which prove to be defective Should MC be unable to repair or replace the product within a reasonable amount of time the customer s alternate remedy shall be a refund of the purchase price upon return of the product to MC This warranty gives the customer specific legal rights Other rights which vary from state to state or province to province may be available EXCLUSIONS The above warranty shall not apply to defects resulting from improper or inadequate maintenance by the customer customer supplied software or interfacing unauthorized modification or misuse operation outside of the environmental specifications for the product or improper site preparation and maintenance if applicable WARRANTY LIMITATIONS MC MAKES NO OTHER WARRANTY EITHER EXPRESSED OR IMPLIED WITH RESPECT TO THIS PRODUCT MC SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE In any state or province which does not allow the foregoing disclaimer any implied warranty of merchantability or fitness for a particular purpose imposed by law in those states or provinces is limited to the one year duration of the written warranty EXCLUSIVE REMEDIES THE REMEDIES PROVIDED HEREIN ARE THE CUSTOMER S SOLE AND EXCLUSIVE REMEDIES IN NO EVENT SHALL MC BE LIABLE FOR ANY DIRECT INDIRECT SPECIA
17. mpedance cece eseeeeeeeee 50 Ohm Weights ea s 8 3 Oz 235 gr Voltage ioira ii oino eoir 5 VDC center pin conductor Power Consumption 20 ma 24W Galt ANE eects 32 DB Standard Temperature eee 40 to 70 CONNECTION isiin setesi SMA female Mount 3 ccncie sites ceeaueneeiese Internal Thread M24x1 5 COAXIAL ANTENNA CABLE STANDARD PACKAGE TYPO sien Ge ese esi 51 Ohm low low RG 58A U Belden 8219 or equivalent COmne ctor issii iiine SMA male Ten Btls ss rren 50 ft 15m ANTENNA MOUNT KIT STANDARD LY PO wevscn Gti emnin PVC pipe with 2 mounting clamps Mount secta dinos dico External Thread M24x1 5 Diameter cocoooccncccnonnninnccooncnnnnnnos 34 1 9 cm A esor 12 30 cm GPS200A Feb 2007 9 MASTERCLOCK INC OPTIONS RACK MOUNT TIME CODE CONVERTER INTERFACE O gt E eg gt a 4 TN te a POWER Ez LARGE CHARACTER CLOCK SMALL CHARACTER CLOCK DISPLAYS DISPLAYS TIME CODE READER CARD TIME CODE SWITCHER TIME CODE OSCILLATOR REDUNDANT BACKUP TCS 100 TIME CODE SWITCHER TCO 100 TIME CODE OSCILLATOR TENES BEE RQerrerciock SOURCE 1 AUTO SOURCE 2 Or De Or sect O sect sccct E GPS200A Feb 2007 10 MASTERCLOCK INC LIMITED WARRANTY This Masterclock Inc hereinafter MC product warranty extends to the original purchaser MC warrants the GPS200A against defects in materials and workmanship for a period of one year from date of sa
18. rmat of the GPS200A Switch 12 OFF default always specifies native RS 232 protocol If you would like to utilize the native RS 232 serial port protocol please see the support area of the MC website www masterclock com to download a copy of the serial port protocol specification Switch 12 ON specifies special RS 232 output mode When configured as an IRIG B B 1 generator switch 12 on provides a 1Hz broadcast ASCII output string in a Kinemetrics Truetime format as follows lt SOH gt DDD HH MM SSQ lt CR gt lt LF gt lt SOH gt ASCII 0x01 lt CR gt carriage return ASCII 0x0d lt LF gt line feed ASCII 0x0a DDD day of year HH hours MM minutes SS seconds Q lock quality where SPACE ASCII 0x20 is normal and ASCII 0x3f indicates not locked The on time mark for the time encoded in the time string is the at the leading edge of the start bit for the lt CR gt character Switch 12 on for any other time code generator format is undefined and reserved TIME CODE ROUTING CONFIGURATION Important note Pin Jumper J2 must be configured in addition to the SW1 9 SW1 11 switches to configure route generated time code to pin 6 ofthe DB 9 See table below SMPTE IRIG B 1 1KHZ IRIG B PULSE MODULATED WIDTH CODED Q e an ee e ee ee ee o ee ee ee GPS200A Feb 2007 5 MASTERCLOCK INC RELAY CONFIGURATION
19. s off off on off 4 hours on off on off 5 hours off on on off 6 hours on on on off 7 hours off off off on 8 hours on off off on 9 hours off on off on 10 hours on on off on 11 hours off off on on 12 hours Switch 6 in the ON position applies an additional Y hour offset to the offset specified by switches 4 Switch 5 in the ON position indicates that the offset specified by switches 1 4 amp 6 is negative Switch 7 in the ON position instructs the GPS200A to apply a daylight savings time adjustment to generated time code when applicable Note The default daylight savings time definition is U S Canada The GPS200A with firmware version 4 1 or later uses the 2007 US Canada DST standard where daylight time begins on the second Sunday of March at 2 00AM and ends on the first Sunday of November at 2 00AM Additional daylight savings time configurations can be provided permanently programmed by MC on special order GPS200A Feb 2007 4 MASTERCLOCK INC Switch 8 is reserved Switches 9 10 and 11 configure the time code output format of the GPS200A Position 9 10 11 Time code type off off off SMPTE 30 frames second on off off SMPTE 25 frames second off on off SMPTE 24 frames second on on off IRIG B B 1 Position 12 RS 232 Output Protocol off default native Masterclock GPS200 200A serial port protocol on special Kinemetrics Truetime format when configured for IRIG B B 1 Switch 12 configures RS 232 output fo
20. the associated ground The necessary connectors and wire can be purchased at a Radio Shack or other electronic supply store or from MC Check with factory for details INITIAL OPERATIONS AND I O CONNECTIONS 1 Locate the antenna in a suitable area so that the top of the antenna module has a clear view of the sky Do not move it until after the GPS200A has initiated TC generation explained below 2 Connect the antenna coax to the TNC connector on the rear of the unit 3 Connect your time code reader system to the DB 9 connector on the rear of the GPS200A The SMPTE output of the GPS200A is approximately 2 volt PP both the modulated and unmodulated IRIG B outputs of the GPS200A are approximately 5 volt PP 4 Apply power by inserting the PS module into an appropriate AC power source and the power connector into the male power socket on the rear of the unit 5 If desired the unit can be operated from a nominal 12 VDC battery 9 18 VDC range Observe voltage polarity printed on the rear panel 6 When power is first applied the initial sequence of the front panel LED is e LED on briefly GPS200A Feb 2007 2 MASTERCLOCK INC e LED off for one second e LED steady on 7 The unit first calculates coordinates and distances for acquisition of GPS satellites The LED will remain on until satellites are acquired and precise location and timing references are established NORMAL OPERATION After acquisition of satellites t
21. to any electrical signal including static discharge Do not touch the PC board with any external wiring and whenever possible handle the unit by the rear panel or on the edge of the PC board as you would a Compact Disk When not changing the jumpers always keep the PC board installed in the case When reassembling the unit take care that the PC board is properly fitted into the slots in the base of the chassis When properly inserted the PC board and rear panel assembly will slide easily into the case no force is necessary The warranty does not cover damage caused to the unit while removing or reassembling the PC board OPERATIONAL MODES The operational modes for the GPS200A are SMPTE 30 frames second non drop frame SMPTE EBU 25 frames second SMPTE FILM 24 frames second IRIG B B 1 CONFIGURING OPERATION VIA ON BOARD SWITCHES The on board 12 position switch bank SW1 is used to configure the basic operation modes of the GPS200A If switch settings are changed while the GPS200A is operating power must be cycled off on the unit for the new settings to take affect Note Some switch banks may refer to on as closed and off as open Switch positions through 4 configure the hour offset the GPS200A will apply to generated time code The offset is referenced to UTC Greenwich Mean Time Position 1 2 3 4 Hour offset off off off off No offset on off off off 1 hour off on off off 2 hours on on off off 3 hour
Download Pdf Manuals
Related Search