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Installation

T801-4 Installation and Operation Manual

© Tait Electronics Limited September 2007

5.10

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If you do not need to keep the packaging, we recommend that you recycle
it according to your local recycling methods. The foam cushions are CFC-
and HCFC-free and may be burnt in a suitable waste-to-energy combustion
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Содержание T801-4

Страница 1: ...TB8100 base station TB9100 base station T801 4 GPS Frequency Reference Installation and Operation Manual MBA 00033 01 Issue 1 September 2007...

Страница 2: ...tronics Limited reserves the right to update the equipment or this document or both without prior notice Intellectual Property Rights This product may be protected by one or more patents of Tait Elect...

Страница 3: ...1 3 2 Rear Panel 16 1 4 Back up Battery 26 2 Operation 27 2 1 System Start up and Shutdown 28 2 2 Loss of Power 28 2 3 Oscillator Control 29 2 4 Valid GPS Reference 29 2 5 Invalid GPS Reference 30 2...

Страница 4: ...t Safety 75 5 2 1 ESD Precautions 75 5 2 2 Equipment Grounding 75 5 2 3 Installation and Servicing Personnel 75 5 3 Regulatory Information 76 5 3 1 FCC Compliance 76 5 3 2 Unauthorised Modifications 7...

Страница 5: ...one 1PPS TTL output to multiple TB9100 base stations 25 Figure 4 1 Location of links on the system interface board 51 Figure 4 2 Connecting the T801 4 to a GPS antenna 52 Figure 4 3 Connecting the T80...

Страница 6: ...capitals are used when quoting text which is printed on the front or rear panels e g MASTER OSCILLATOR LED DIP SWITCHES or I O PORT Within this manual four types of alerts are given to the reader War...

Страница 7: ...ical details not included in manuals and to offer solutions for any problems that arise All available T801 4 product documentation is provided on the Product CD supplied with the unit Updates may also...

Страница 8: ...ta NMEA 0183 data message RSU Remote Site Unit RTC Radio Technical Commission for Maritime services SN Signal to Noise SV Space Vehicle satellite TPS A proprietary NMEA 0183 data message determined by...

Страница 9: ...it Electronics Limited September 2007 1 Description This chapter provides a brief functional and mechanical description of the T801 4 GPS frequency reference It also provides detailed information on t...

Страница 10: ...ernal GPS receiver The internal receiver is the Trimble Lassen iQ GPS receiver module and the external receiver is the Dalman 40742 GPS antenna receiver1 which has the GPS receiver integrated with the...

Страница 11: ...N1 J101 J100 J2 J1 Front Panel Board 1 J1 DC DC Converter 1 J1 J206 SMA J205 DC DC Converter 2 J2 GPS Receiver BNC1 BNC2 BNC3 BNC4 BNC1 BNC2 BNC3 BNC4 Ground Connector J107 J106 J105 J104 J2 J102 J3 J...

Страница 12: ...ing to the product code printed on a label on the rear panel The product codes are explained in the table below Product Code Description T801 41 8000 one Satsync 7 module fitted internal GPS receiver...

Страница 13: ...nal Figure 1 2 Mechanical assembly b Satsync 7 module 1 standard i DC input filter c Satsync 7 module 2 optional j system interface board d front panel 1 chassis e front panel board for Satsync 7 modu...

Страница 14: ...are refer to Programming on page 35 It is a standard RS 232 interface DCE Use the supplied TBA0P101 cable or a standard straight through cable to connect the T801 4 to the PC The pin allocations are g...

Страница 15: ...ied maximum accuracy and has passed the 1 part in 108 level Green does not necessarily mean that the oscillator has reached its specified maximum accuracy Amber indicates that the control process is l...

Страница 16: ...1 i DC inputs c frequency reference outputs from Satsync 7 module 2 j power LED d RF input from GPS antenna 1 GPS receiver LED PORT A GPS receiver selected e I O port 1 GPS receiver LED PORT B or int...

Страница 17: ...he quoted temperature range Without a valid GPS fix and with the master oscillator following an ageing trend the accuracy will be determined by the ageing correction process refer to Ageing Correction...

Страница 18: ...ync 7 modules inputs for the CTCSS phase reversal for both Satsync 7 modules only available for frequencies 260Hz an output indicating which GPS receiver is active an output indicating whether the 1PP...

Страница 19: ...GPS alarm for Satsync 7 Module 1 maximum input voltage 30V maximum sink current 45mA 4 GPS ALRM OSC2 output open collector active 0V output low level 0 4V for 6mA sink current GPS alarm for Satsync 7...

Страница 20: ...red to as PORT A in the rest of this manual The pin allocations for this port are described in detail in the following table f Pin Signal Name Signal Type Logic Notes 1 12VDC power output power supply...

Страница 21: ...input low level 0 8V 1PPS valid 5 1PPS VALID IN inputb active low 0 8V 1PPS valid input connection for VALID signal from QS2 RSU c internal pull up resistor to 3 3V maximum input voltage 9V 6 GND gro...

Страница 22: ...S signal is not based on a valid GPS fix 5g on enables a GPS receiver 1PPS RS 485 input changeover whenever GPS and or oscillator alarms occur off disables the GPS receiver changeover 6h on GPS receiv...

Страница 23: ...mechanism to clamp the wire It also incorporates a test connection When connecting the DC cables to this connector proceed as follows 1 Strip the insulation back 10mm Note Do not twist the strands of...

Страница 24: ...have low output impedance and the output drive is designed to drive a 50 load When these outputs are used with a load each output must be terminated with a 50 termination otherwise reflections of the...

Страница 25: ...5 Connecting one 1PPS TTL output to multiple TB9100 base stations the longest length of cable must be between the T801 4 and the first TB9100 use short lengths of cable between each TB9100 50 terminat...

Страница 26: ...battery back up power the GPS receiver upon power up has no memory of previous navigation data and must perform a cold start In this case the typical time to acquire a fix is less than two minutes Fo...

Страница 27: ...he following topics applying power what happens when power is lost the use of UTC pulses 1PPS as a stable reference source what happens when the GPS reference is valid or invalid how the ageing correc...

Страница 28: ...on page 33 The T801 4 has two modes of operation run mode and programming mode The unit defaults to run mode whenever power is applied and is only ever in programming mode briefly when you apply confi...

Страница 29: ...e can be provided by the following a Trimble internal GPS receiver a Dalman external GPS receiver via RS 485 signals on PORT A an RS 485 signal on PORT B a TTL input on PORT A You must program the Sat...

Страница 30: ...ction Process below The master oscillator relay internal will be de energised activating the master oscillator alarm output on the T801 4 rear panel Note You can delay the response time of the alarms...

Страница 31: ...option of using a back up battery to keep the module s RAM alive when the prime power is turned off The battery continues to power the real time clock and allows the GPS almanac ephemeris and last po...

Страница 32: ...l when the receiver loses its GPS fix and consequently the GPS alarm will not be triggered This is the case with the QS2 RSU GPS receiver It is important in this situation to monitor the correct alarm...

Страница 33: ...e outputs are controlled by the GPS alarm s via DIP switch 3 RS 485 output and DIP switch 4 TTL output If the T801 4 is using the GPS receiver of a QS2 RSU as the 1PPS source the VALID signal from the...

Страница 34: ...to be considered if the 1PPS outputs are used The configuration of common T801 4 systems described in System Configuration on page 49 also takes into account these GPS receiver characteristics The fol...

Страница 35: ...o program such things as output frequencies and levels alarm output delay 1PPS timing source CTCSS phase and lock only available for frequencies 260Hz The ET software also allows the user to monitor s...

Страница 36: ...on your PC 4 Double click the file to run the software or create a Windows shortcut 3 2 Connecting and Logging On 1 Connect the T801 4 to an appropriate GPS receiver or antenna 2 Using the supplied ca...

Страница 37: ...t If the ET software connects successfully to the Satsync 7 module the following screen appears The PPS and OSC LEDs are green If the GPS receiver does not have a fix on its satellite tracking system...

Страница 38: ...rements which resulted in the master oscillator control voltage being updated This is described in detail in Viewing the Data Log on page 42 GPS Click GPS to view the status of the GPS communications...

Страница 39: ...rom the requested frequency to the actual frequency set when you click the Apply button In this unit the step size is 0 025Hz Level The level of the output frequency is shown in the Level field Howeve...

Страница 40: ...the value manually In the manual state the value will remain fixed Fault Outputs Delay Entering a number of seconds into this field will cause the GPS status and master oscillator alarms and front pan...

Страница 41: ...you want to keep the data change the file name before you write more data To view a display of the last 10 frequency measurement results refer to Viewing the Data Log on page 42 Apply Click Apply to...

Страница 42: ...107MHz The information available on this screen is explained in the following paragraphs Time The time when the event took place Note that the time displayed in this field is based on the computer s...

Страница 43: ...og 1 This screen shows how the control algorithm is changing the DAC in order to reduce the error The table can be read as follows Over Test Period seconds the error was Error and the control voltage...

Страница 44: ...The GGA GSA GSV and RMC or TPS LEDs flash alternately green and yellow when the GPS receiver is communicating with the Satsync 7 module The screen at left is displayed when the Satsync 7 module is con...

Страница 45: ...eceiver PPS Fix A green LED indicates that the system has established its geographical position and is transmitting a valid PPS signal The GPS receiver will report if the PPS is not valid and the LED...

Страница 46: ...software will be PC0851xxx exe where xxx refers to the version number You can change the file name to something more recognisable if necessary 2 Download the firmware hex file to the same folder on y...

Страница 47: ...ptember 2007 7 Select Options Connect to re open the Connect dialog box Click Connect If the Loader software connects successfully to the Satsync 7 module the following screen appears 8 Click Load to...

Страница 48: ...r 2007 9 Click Start to start the upload to the Satsync 7 module The screen will then display the progress of the upload 10 When the upload is complete select Options Disconnect to disconnect the Load...

Страница 49: ...signal from a QS2 RSU system T801 4 supplied with dual 1PPS signals from a QS2 RSU system Note You cannot use the T801 4 to provide a 1PPS signal to the QS2 RSU with version 3 00 00 00 and later firmw...

Страница 50: ...mination resistor is in circuit across this RS 485 input not fitted termination resistor is not in circuit W304 selects the RS 485 termination resistor for the 1PPS input on PORT B pins 1 and 2 2 fitt...

Страница 51: ...1 4 Installation and Operation Manual System Configuration 51 Tait Electronics Limited September 2007 Figure 4 1 Location of links on the system interface board 1 W302 W301 W400 W401 W305 W303 W304 1...

Страница 52: ...for more information on connectors and appropriate types and lengths of cables Link Settings There are no changes to the factory default settings Programming Program the Satsync 7 module s as require...

Страница 53: ...output is on only when the 1PPS signal is valid i e based on a GPS fix the output will be disabled by the GPS alarm after the fault output delay periodb 4a controls the 1PPS TTL output optional on th...

Страница 54: ...ited September 2007 When activated this line can disable the 1PPS outputs Set DIP switch 3 off if you want to disable the 1PPS RS 485 output Set DIP switch 4 off if you want to disable the 1PPS TTL ou...

Страница 55: ...30m cable Refer to Cabling on page 79 for more information on connectors and appropriate types and lengths of cables Link Settings There are no changes to the factory default settings Programming Prog...

Страница 56: ...disable the 1PPS RS 485 output Set DIP switch 4 off if you want to disable the 1PPS TTL output The 1PPS VALID LED on the rear panel will go off whenever this line is activated Table 4 2 DIP switch set...

Страница 57: ...id GPS Reference on page 30 the loss of the GPS fix could mean the Satsync 7 VCO is frozen and the oscillator alarms are delayed for 24 hours The 1PPS outputs would therefore be disabled or invalid fo...

Страница 58: ...nk Settings There are no changes to the factory default settings Programming Program the Satsync 7 module s as required for output frequencies output levels fault output delay Note Do not change the t...

Страница 59: ...escription State Function 1 off default 2 selects the primary GPS receiver optional on external GPS receiver is selected off internal GPS receiver is selected 3a controls the 1PPS RS 485 output on POR...

Страница 60: ...ctivate the same alarm for a changeover to occur For example a GPS alarm occurring on only one of the Satsync 7 modules indicates a fault with the module but not a fault with the GPS receiver Conseque...

Страница 61: ...GPS receiver Connection 1 Set up the QS2 RSU as a primary unit using the internal links on the RSU interface board refer to the RSU Service Manual for more information In this configuration the RSU p...

Страница 62: ...to PPS Only by selecting the check box With the timing source set as PPS Only the Satsync 7 module s do not check for NMEA data They assume that the 1PPS signal is always valid although it must be pre...

Страница 63: ...i e based on a GPS fix the output will be disabled by the VALID alarm from the RSUb 5 off default 6 off default 7 off default 8c sets the signal type for the 1PPS VALID IN and 1PPS VALID I O input lin...

Страница 64: ...D signal from the RSU Although it is most important to monitor the 1PPS VALID OUT line we still recommend that you monitor the Satsync 7 GPS and OSC alarms They will provide notification of other faul...

Страница 65: ...eceiver when the primary 1PPS signal becomes invalid The validity of the 1PPS signal is determined by the state of the 1PPS VALID line associated with each 1PPS input The changeover process is describ...

Страница 66: ...tted Each RSU also provides a 1PPS VALID signal to the T801 4 1 Set up the RSUs as primary and secondary units using the internal links on their respective interface boards refer to the RSU Service Ma...

Страница 67: ...ource to PPS Only by selecting the check box With the timing source set as PPS Only the Satsync 7 module s do not check for NMEA data They assume that the 1PPS signal is always valid although it must...

Страница 68: ...tput is always enabledb ensures the 1PPS output is restored after a changeover off the output is disabled when one or both of the 1PPS signals from the RSUs becomes invalid 5 on default 6 selects the...

Страница 69: ...ts will be disabled when the changeover is triggered regardless of the validity of the standby 1PPS signal The outputs are only re enabled when both 1PPS signals are valid 4 6 2 Alarms and Monitoring...

Страница 70: ...ert can be raised by monitoring the 1PPS VALID OUT output line pin 9 of PORT B This line will go high 5V when one or both of the 1PPS signals becomes invalid This line essentially reflects the 1PPS VA...

Страница 71: ...with dual QS2 RSU receivers Pin Signal Name Notes 1 OSC ALRM OSC1 Activated by the Satsync 7 module s when the master oscillator accuracy is below the 1 part in 108 threshold For example when the T80...

Страница 72: ...The GPS SELECTED LED indicators on the rear panel will also indicate which receiver is selected PORT A LED on secondary RSU GPS selected INT PORT B LED on primary RSU GPS selected The 1PPS VALID LED w...

Страница 73: ...net It also provides some general information on safety precautions and site requirements Important Before installing the T801 4 in the rack or cabinet make sure that the links on the system interface...

Страница 74: ...provides backup for the optional internal GPS receiver There is a risk of explosion if the battery is replaced with an incorrect type Replace the battery with a CR2032 type battery Dispose of used ba...

Страница 75: ...s a typical antistatic bench set up You can obtain further information on antistatic precautions and the dangers of electrostatic discharge ESD from standards such as ANSI ESD S20 20 1999 or BS EN 100...

Страница 76: ...eparation 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 tech...

Страница 77: ...d 95 relative humidity through the specified operating temperature range 5 4 3 Dust and Dirt For uncontrolled environments the level of airborne particulates must not exceed 100 g m3 5 5 Grounding and...

Страница 78: ...blade screwdriver for releasing the cable clamps on the supplied DC input connector refer to DC INPUTS on page 23 8mm AF spanner for the SMA connector and ground connector 5 7 Ventilation Always ensu...

Страница 79: ...213 or similar Terminate one end with a male SMA connector and the other end with a male TNC connector The maximum length of the GPS antenna cable will depend on the type of coax cable used and the te...

Страница 80: ...ember 2007 5 10 Disposal of Packaging If you do not need to keep the packaging we recommend that you recycle it according to your local recycling methods The foam cushions are CFC and HCFC free and ma...

Страница 81: ...sation regarding the availability of specific items Description Part Number Product Code Trimble Bullet III active GPS antenna 007 00021 00 Dalman 40742 GPS antenna receiver 007 00019 00 Dalman 40742...

Страница 82: ...82 Accessories T801 4 Installation and Operation Manual Tait Electronics Limited September 2007...

Страница 83: ...given in these specifications are minimum figures unless otherwise indicated for equipment operating at standard room temperature 22 C to 28 C 71 6 F to 82 4 F and standard test voltage 13 8VDC Where...

Страница 84: ...Temperature Range 30 C to 60 C 22 F to 140 F ambient temperatureb b Ambient temperature is defined as the temperature of the air circulating around the T801 4 inside the rack or cabinet during normal...

Страница 85: ...stallation Without a valid GPS fix and master oscillator control voltage fixed subject to 1 part in 5 107 0 02ppm over the quoted temperature range Without a valid GPS fix and master oscillator follow...

Страница 86: ...ceiver output to 1PPS TTL output CTCSS Synchronisationa inter site synchronisation to a resolution of 0 1Hz Reversala CTCSS output will reverse phase on external active low trigger 0 8V a When enabled...

Страница 87: ...E MODIFY REVERSE COMPILE OR REVERSE ASSEMBLE ANY SOFTWARE OR FIRMWARE IN WHOLE OR PART Important Notice THE SOFTWARE OR FIRMWARE MAY CONTAIN OPEN SOURCE SOFTWARE COMPONENTS OPEN SOURCE COMPONENTS OPEN...

Страница 88: ...TAIT S SOLE AND TOTAL LIABILITY FOR ANY SUCH CLAIM SHALL BE LIMITED AT THE OPTION OF TAIT TO THE REPAIR OR REPLACEMENT OF THE SOFTWARE OR FIRMWARE OR THE REFUND OF THE PURCHASE PRICE OF THE SOFTWARE O...

Страница 89: ...it Electronics Limited vakuuttaa t ten ett T801 4 tyyppinen laite on direktiivin 1999 5 EY oleellisten vaatimusten ja sit koskevien direktiivin muiden ehtojen mukainen Katso http eudocs taitworld com...

Страница 90: ...T801 4 GPS RoHS Lead Pb Mercury Hg Cadmium Cd Hexavalent Chromium Cr VI Poly brominated Biphenyls PBB Poly brominated Diphenyl Ethers PBDE PCB X801 4x S100 X O O O O O PCB 220 02164 xx X O O O O O PCB...

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