Sokkia Atlas Operator'S Manual Download Page 62

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Product Identification

P/N: 1006148-01

• • • • • •

Product Identification

The Sokkia Atlas receiver can be identified by the serial number range shown in Table 16

Table 16. Product Serial Numbers

Cellular Modem

Serial Number

Sokkia Atlas (With Digital UHF II)

No cellular modem

1332-xxxx

HSPA modem

1333-xxxx

Summary of Contents for Atlas

Page 1: ......

Page 3: ...s Features 1 Unpacking Your Receiver Kit 1 Standard Kit Components 2 Accessories 2 Using Sokkia Software With Your Receiver 3 Getting Technical Support 3 Website 3 Getting Acquainted 4 Receiver Overview 4 Cables 5 Accessories 6 Batteries 7 Data and Power Ports 7 External Radio Antenna Connector 8 Bottom Connector 9 SD SDHC and SIM Card Slots 9 SIM Card Slot 10 SIM Cards 10 Installing the SIM Card ...

Page 4: ...ry Power Source 20 Insufficient Power 21 Configuring the Receiver 22 Viewing Receiver Information 22 Loading New Firmware 23 About the OAF 25 Checking the Receiver s OAF 25 Loading an OAF 26 Performing a Factory Reset 30 Field System Setup 32 Setting Up the Base Receiver 32 Setting Up the Rover Receiver 33 Measuring Antenna Height 33 Collecting Data 35 Memory 35 SD SDHC Card 35 Installing the SD S...

Page 5: ...S232 Connector 52 USB Connector 53 Product Identification 54 SD SDHC Card Recommendations 55 Safety Warnings 56 General Warnings 56 Battery Warnings 56 Receiver Warnings 56 Usage Warnings 56 Regulatory 57 FCC Compliance 57 Industry Canada Compliance 57 IC RF Radiation Exposure Statement 57 IC Additional Statement with Detachable Antennas 58 Community of Europe Compliance 58 European Community Decl...

Page 6: ...rrangement by TPS Trademarks MAGNET Sokkia and Topcon are trademarks or registered trademarks of the Topcon group of companies Windows is a registered trademark of Microsoft Corporation The Bluetooth word mark and logos are owned by Bluetooth SIG Inc and any use of such marks by Topcon Positioning Systems Inc is used under license Other product and company names mentioned herein may be trademarks ...

Page 7: ... agree to treat TPS Confidential Information with a degree of care no less stringent that the degree of care you would use in safeguarding your own most valuable trade secrets Nothing in this paragraph shall restrict you from disclosing Confidential Information to your employees as may be necessary or appropriate to operate or care for the receiver Such employees must also keep the Confidentiality...

Page 8: ... Click Finish Mono User supplied text or variable Type guest and click Enter Italic Reference to another manual or help document Refer to the Sokkia Online Help Further information to note about system configuration maintenance or setup Supplementary information that can have an adverse affect on system operation system performance data integrity measurements or personal safety Notification that a...

Page 9: ...deliver world class positioning and navigation support to your applications Sokkia Atlas Features The Sokkia Atlas receiver s advanced design allows for a simplified setup and premium performance The Sokkia Atlas receiver features the following A premier multi constellation GNSS board Industry leading full wave antenna technology Detachable batteries for extended operation Internal radio and cellu...

Page 10: ...lity and job site efficiency For more details on the optional accessories available for Sokkia Atlas contact your Sokkia dealer Figure 2 Receiver Accessories 1 Components in standard kits may differ based on your region Contact your local Sokkia dealer to inquire about items and accessories included in your kit The Sokkia Receiver Utility SRU USB drivers and Sokkia Atlas Operator s Manual are avai...

Page 11: ...er and faster service 1 A description of the following Field operation that was being performed when the problem occurred Details of the unexpected behavior symptoms and any error messages that precede or follow the problem Problem occurrence frequency or patterns 2 Receiver information and configuration settings For receiver information click Information in SRU select Save to File enter a file na...

Page 12: ...ceiver s magnesium alloy lower enclosure features an easy to operate display panel detachable batteries quick release mounting socket and data ports The Sokkia Atlas receiver has a highly visible display panel with single button operation The display panel enables you to view the receiver s operational status For more information see Display Panel Operations on page 11 You can locate regulatory an...

Page 13: ... supply unit to a grounded outlet U S p n 14 008052 01 Europe p n 14 008054 01 Australia p n 14 008053 01 Brazil p n 1000475 01 USB Cable Connects the receiver to an external device controller or computer for data transfer and receiver configuration p n 14 008070 01 Receiver Power Charging Cable Connects the receiver and the power supply unit via SAE connectors for battery charging p n 14 008016 0...

Page 14: ...o the range pole for the receiver to slip into the top Using the side clips the receiver can be quickly connected to disconnected from the range pole Hand held Controller Allows the Sokkia Atlas Base and Rover systems to be configured and monitored directly in the field You can use the Sokkia Receiver Utility SRU to configure the receiver and any Sokkia field data collection software MAGNET and SR...

Page 15: ... in yellow used for high speed data transfer and communication between the receiver and an external device The body of the connector on the corresponding cable is yellow Serial Port rimmed in black used for communication between the receiver and an external device Power rimmed in red used to connect the receiver to an external power source This port can also be used to charge the batteries The bod...

Page 16: ...ainted External Radio Antenna Connector The radio antenna connects to the external antenna connector on the Sokkia Atlas radome Figure 4 The radio antenna uses a BNC connection Figure 4 Sokkia Atlas Radome and External Antenna Connector External Antenna Connector ...

Page 17: ...clips the receiver can be quickly connected to disconnected from the range pole Figure 5 Sokkia Atlas Quick Connector SD SDHC and SIM Card Slots The SD SDHC and SIM card slots are located under the battery compartments near the base of the dome For more information about the SD SDHC card see Memory on page 35 For more information about SIM cards see SIM Card Slot on page 10 Figure 6 Sokkia Atlas C...

Page 18: ... cellular provider SIM Cards The SIM card must have HSPA support to communicate over a TCP IP network Installing the SIM Card 1 Make sure the receiver is turned off 2 Remove the detachable battery to the right of the LED Display panel 3 Carefully insert the SIM card label side up into the SIM card slot located at the top of the battery compartment Once the receiver is turned on the receiver board ...

Page 19: ...receiver on and off When turning the receiver on press the Power button until the LEDs briefly flash When turning off the receiver press the Power button until the LEDs go out Figure 8 Power Button Functions Receiver Status LEDs There are four status LEDs to provide you information about the battery life tracked satellites memory capacity and Bluetooth wireless connectivity This section describes ...

Page 20: ...ng tracked Table 3 Recording LED Patterns Display Description Green Blink File logging is in progress Each blink indicates data is being written to the SDHC card Solid Orange The receiver is changing modes Orange Blink The file system is not accessible Solid Red A fault condition with the receiver no more memory no SDHC card inserted a hardware problem or an improper OAF For more information on RE...

Page 21: ...ization error wrong PIN code etc Table 5 Bluetooth LED Patterns LED Color Description Blue Blink Bluetooth is on and waiting for a connection Blue Solid A single Bluetooth connection is established No light Bluetooth is turned off Table 4 Sokkia Atlas LEDs Table 6 Battery LED Patterns LED Color Description THE RECEIVER IS ON USING BATTERY POWER Slow Green Blink 5 sec The charge is greater than 85 ...

Page 22: ...perations and REC LED Status FUNCTION Key REC LED Status When data recording is off and the FUNCTION key is Not pressed No light No data recording Orange blink Internal file system test in progress Red No free memory hardware problem with data recording No SDHC card Pressed for 1 second If FUNCTION key mode is LED blink mode switch Orange Release to change information mode If FUNCTION key mode is ...

Page 23: ...pation mode Orange Data recording started Static post processing occupation mode Pressed for 1 second If FUNCTION key mode is LED blink mode switch Orange Release to change information mode If FUNCTION key mode is Occupation mode switch Orange Release to toggle between Static and Kinematic post processing modes Pressed for 1 5 seconds No light Release to stop data recording Pressed for 5 8 seconds...

Page 24: ... Charging the Batteries The batteries are shipped from the factory without power Fully charge the batteries before surveying You can use the power supply unit or the battery charging cradle to charge the batteries Power Supply Unit The power supply unit p n 22 034101 01 charges the external batteries when connected to a grounded outlet This unit converts the alternating current AC normally supplie...

Page 25: ... display the amount of charge for the corresponding battery The two battery LEDs display the percentage of charge in the attached battery A green light indicates a charge greater than 85 An orange light indicates an intermediate charge A red light indicates a charge of less than 15 Recharge or replace the battery as soon as possible The power LED lights up when the charger is connected to an exter...

Page 26: ...power cable into the receiver s power input port 2 Connect the receiver to SAE power cable and the power supply to outlet cable to the AC adapter 3 Plug the power supply to outlet cable into an available outlet The batteries are fully charged after approximately 6 hours To charge the batteries using the charging cradle 1 Remove the batteries from the receiver and insert them into the charging crad...

Page 27: ...nd out to detach the battery from the receiver Figure 14 Figure 14 Detach the Sokkia Atlas Batteries Surveying While Charging The user can execute any kind of surveying while charging the internal batteries attached to the Sokkia Atlas without degradation of performance Changing the Batteries while Surveying It is safe to change a depleted battery with a fully charged one while surveying i e on th...

Page 28: ...receiver s power port 3 Turn on the receiver Figure 15 Connect an Auxiliary Battery and the Receiver A single external 12 V 2 3 A h battery should run the receiver and modem for about 9 hours and the receiver for 13 hours To connect the receiver to the charging cradle Figure 16 on page 21 The charging cradle with extra batteries hooks onto a tripod or belt for a convenient power supply for the rec...

Page 29: ...store power to your receiver and turn it back on do one or all of the following Recharge the batteries Make sure the power cable is correctly connected to the receiver s port a Align the keyways when connecting the power serial cable to the receiver port b Turn the cable lock clockwise until it clicks to secure the cable in place c To disconnect the cable turn the lock counter clockwise and then g...

Page 30: ...eiver Utility SRU Online Help Viewing Receiver Information In the Sokkia Receiver Utility SRU the Receiver Info window displays basic receiver information such as hardware and firmware versions RAM size receiver ID serial number etc To open the Receiver Info window 1 Connect the receiver to a computer and open SRU 2 In SRU connect to the receiver 3 Click Device Application Mode Receiver Managing 4...

Page 31: ...1 2 To connect to the receiver in SRU a Click Device Application Mode Firmware Loader b Click Device Connect c In the Connection Parameters window Figure 18 select Serial Port and the port name and then click Connect Figure 18 Connection Parameters Window 3 Click the Firmware Loader icon in the SRU main window The Firmware Loader window Figure 19 displays This window enables you to upload firmware...

Page 32: ... N 1006148 01 Configuring the Receiver Figure 19 Upload Firmware Window 7 Click Start to upload the selected files 8 Click OK to continue uploading new firmware to the receiver see Figure 20 Figure 20 Finishing Firmware Upload ...

Page 33: ...vailable with the receiver that can extend the receiver s functionality to better suit your job requirement Examples of upgrade options are listed below GLONASS L1 L2 signal tracking GPS L5 signal tracking RTK and update rate 20 and 50 Hz 10 Hz standard BeiDou B1 B2 signal tracking Contact your Sokkia dealer or a representative for a complete listing of available options and pricing information Ch...

Page 34: ...Information on page 22 To load a new OAF 1 Follow the steps in Checking the Receiver s OAF on page 25 2 Right click on the Receiver Options window and select Upload OAF Figure 22 Figure 22 Right click and Select Upload OAF 3 Navigate to the location of the new Option Authorization File When connecting the Sokkia Atlas to the Sokkia Receiver Utility SRU some windows will display the receiver as a G...

Page 35: ...e if the selected file is compatible with the currently connected receiver If you chose a file not intended for this receiver the Upload OAF window displays an error icon next to the Receiver ID and disables the Upload the File to the Receiver button 5 Click Upload the File to the Receiver to start loading the file Figure 24 Figure 24 Upload the OAF to the Receiver ...

Page 36: ...the Receiver 6 Click Yes at the prompt to reset the receiver Figure 25 Figure 25 Reset Receiver When the receiver resets the Connection Parameters window opens 7 Click Connect Figure 26 The SRU main window opens Figure 26 Connect to the Receiver ...

Page 37: ...s window displays Figure 27 Click Options In the Receiver Options window Figure 28 ensure the following are correct If you uploaded a universal OAF make sure the expiration date is still valid If you uploaded a customer OAF make sure the correct customer file is loaded Figure 28 Receiver Options Window ...

Page 38: ...er s NVRAM and restores the receiver s factory default settings Although a factory reset or clearing the NVRAM is not recommended as a common practice there are times when it can eliminate communication or tracking problems After a factory reset the receiver requires time to collect new ephemerides and almanacs about 15 minutes A factory reset will not delete any files already recorded in the rece...

Page 39: ...ctory Reset and click Yes to continue Using the LED display panel 1 Press the Power button to turn off the receiver 2 Press and hold the FUNCTION button 3 Press and hold the Power button for one second and then release it while continuing to hold the FUNCTION button 4 Wait until the STAT and REC LEDs turn green 5 Wait until the STAT and REC LEDs blink orange 6 Release the FUNCTION button while the...

Page 40: ...pter to the tripod Figure 31 3 Attach the antenna to the modem antenna connector 4 Level the tripod and tighten the screws 5 Attach any other accessories as needed such as a back up power supply 6 Measure the height of the receiver from the ground using the tape measure See Measuring Antenna Height on page 33 7 View the LED display panel for the receiver s current status See also Display Panel Ope...

Page 41: ...e antenna above the station marker Method of measuring the antenna height Model of the antenna receiver used Any necessary antenna phase center adjustments based on the antenna model is automatically applied This adjustment when combined with accurately measured height and measurement methods allows for correctly computed reference marker coordinates To accurately measure the antenna height 1 Meas...

Page 42: ...Measuring Antenna Height 34 P N 1006148 01 Field System Setup Figure 32 Antenna Height Measurement Points 168mm A B A ARP to edge 79 0 B ARP to corner 97 5 LV LS SHMM LV Vertical Length LS Slant Length ...

Page 43: ... You can access the data that resides on the SD SDHC card via the USB or serial port or Bluetooth wireless technology See Managing Files on page 37 A secure digital card can be purchased at a local computer supply store Installing the SD SDHC Card 1 Make sure the receiver is turned off 2 Remove the detachable battery to the left of the LED Display panel 3 Carefully insert the SD SDHC card label si...

Page 44: ...a use the LED display panel or SRU 1 Press the Power button to turn on the receiver 2 Wait for the STAT LED to indicate satellites are being tracked The STAT LED blinks green for GPS satellites and amber for GLONASS satellites A short red blink indicates the receiver has not solved a position Five or more satellites provide optimal positioning 3 To begin recording press and hold the FUNCTION butto...

Page 45: ...controller for storage post processing or backup The SD SDHC cards hold a finite amount of files so you will want to delete files to increase memory capacity When the memory is full the receiver stops logging data and the REC LED turns dark off indicating an error condition Existing data is not overwritten To delete raw data files from the receiver use a USB serial or Bluetooth connection to downl...

Page 46: ...f the receiver by pressing the Power button or by using SRU Tools Reset receiver Restore default settings by clearing the NVRAM See Performing a Factory Reset on page 30 This restores the receiver s parameters to the factory default settings and erases the almanac and ephemeris files This action does not delete data files from the receiver memory If the problem persists see the following sections ...

Page 47: ...orresponding receiver options Contact a dealer or visit the Sokkia website for details Refer to the Sokkia Receiver Utility SRU Online Help for a detailed description of options The receiver tracks too few satellites If the survey is conducted near obstructions tree canopy tall buildings and so forth Make sure the Multipath Reduction boxes have been enabled in the field data collection software a ...

Page 48: ...ttings Tracking Obs Verify there is a clear view of the sky to allow sufficient satellite tracking The modem battery is low The specified baud rate is incompatible with the baud rates the modem supports The baud rate is the rate at which the receiver transmits differential messages to the modem and vice versa Change the modem s baud rate The Base and Rover modems use different radio link parameter...

Page 49: ...or the Bluetooth serial port used for connection to cmd SRU error message Open COM port failed Access is denied Another application uses the computer port dedicated for connection Close the application and then re connect Connect the receiver via another unused computer port After searching for available devices none are discovered The receiver is not receiving power Check that the receiver is get...

Page 50: ...reless technology the incorrect port is selected Use a computer or receiver that has Bluetooth wireless technology enabled installed Make sure the computer and receiver use the correct ports for communication For the Sokkia Atlas receiver this is Bluetooth serial port A btsp a Cleaning and Storing the Receiver Use a clean cloth moistened with neutral detergent or water Never use an abrasive cleane...

Page 51: ... zero center Battery Two external detachable Controller External Mounting 5 8 11 quick disconnect Seals Silicon molding in color Keys Two keys Power On Off Function start stop data logging switch information mode LEDs Six LEDs STAT satellite and receiver status REC record and data status RX TX modem status BT Bluetooth wireless technology connection status BATT x2 battery status Environment Operat...

Page 52: ...2 Amp Power Consumption Average with modem on and 20 SVs tracked Using new batteries and operating at room temperature Modem off 3 0W Digital UHF II Receive only mode 4 3 W Modem transmitting at 0 5 W 6 4 W Modem transmitting at 1 W 7 8 W Battery Charge Connect the AC adapter to charge the internal battery Available run charge when connected to external battery Charging Time Approx 6 hours for ful...

Page 53: ...ed RS232 serial port rimmed in black USB port up to 12 Mbps rimmed in yellow Internal Bluetooth port D Serial Port Specifications RS232 Serial Port Baud rate 460800 230400 115200 default 57600 38400 19200 9600 4800 2400 1200 600 300 Flow control RTS CTS Length 7 or 8 default Stop bit 1 default 2 Parity None default Odd Even Connectors Modem Antenna BNC PWR RS232 Serial USB MINTER LED Display 6 ext...

Page 54: ...val for CMR RTCM 1Hz standard Elevation 0 to 90 degrees independent of data logging Solution Mode Delay synchronization mode 5 to 10 msec Extrapolation not synchronized mode 10 to 20 msec Process Interval 1Hz standard 10 20 50 Hz optional Latency Delay mode 5 to 10 msec Extrapolation mode 10 to 20 msec Status Fix float DOP data link status modem latency common satellites Results RTK coordinates HR...

Page 55: ... For more recommendations see SD SDHC Card Recommendations on page 55 f CMR CMR is a third party proprietary format Use of this format is not recommended and performance cannot be guaranteed Use of industry standard RTCM 3 x is always recommended for optimal performance g Subject to multipath anomalies interference atmospheric conditions and atypical satellite geometry GNSS survey best practices m...

Page 56: ...n mode Time division duplex Supported protocol s Proprietary PDL Trimble Transmitter carrier power 10 20 50 100 200 500 and 1000 mW user selectable Receiver sensitivity GFSK 119 dBm at 10 4 BER and 12 5 KHz spacing 4FSK 114 dBm at 10 4 BER and 12 5 KHz spacing Receiver dynamic range 119 to 1dBm Serial data rate 1200 2400 4800 9600 14400 19200 38400 57600 115200 bps Radio data rate 25KHz 9600 bps f...

Page 57: ...Wireless Module Quad band GSM and UMTS HSPA Supported Bands GSM 850 900 1800 1900 MHz UMTS HSPA 850 1900 2100 MHz TX Power UMTS HSPA Class 3 0 25 Watt GSM 850 900 MHz Class 4 2 Watt GSM 1800 1900 MHz Class 1 1 Watt EDGE 850 900 MHz Class E2 0 5 Watt EDGE 1800 1900 MHz Class E2 0 4 Watt Data Features UMTS HSDPA HSUPA 3GPP Release 6 GSM GPRS 3GPP Release 9 Max uplink 5 76 Mbps max downlink 7 2 Mbps ...

Page 58: ...nector Table 12 is a BNC connector for UHF radios Table 11 Bluetooth Module Specifications Range up to 10 m indoor up to 20 m outdoor Type Class 2 Service classes Miscellaneous Supported profiles LM L2CAP SDP SPP Frequency Country Code North America and Europe Frequency Country Code North America and Europe Range up to 10 m indoor up to 20 m outdoor Table 12 Modem Connector Specifications Modem Ty...

Page 59: ...mber G80F1C T05QF00 0000 Figure 33 Power Connector Table 13 describes power connector specifications 1 2 3 4 5 Table 13 Power Connector Specifications Number Signal Name Dir Details 1 Power_INP P 9 to 21 volts DC input 2 Power_INP P 9 to 21 volts DC input 3 Power_GND P Ground power return 4 Power_GND P Ground power return 5 Aux_Power P 9 to 21 volts DC input ...

Page 60: ...ptacle 7 pin ODU part number G80F1C T07QC00 0000 Figure 34 Serial RS232 Connector Table 14 gives the RS232 cable connector specifications 1 2 3 4 5 6 7 Table 14 RS232 Connector Specifications Number Signal Name Dir Details 1 Not used 2 GND Signal ground 3 CTS I Clear to send 4 RTS O Request to send 5 RXD I Receive data 6 TXD O Transmit data 7 Not used ...

Page 61: ...tor is a sealed receptacle 4 pin TPS cable connector Figure 35 Figure 35 USB Connector for GGD Options Table 15 gives the USB connector specifications 1 2 3 4 Table 15 USB Specifications Number Signal Name Dir Details 1 USB_PWR P Bus power input 2 USB D I O Data minus 3 USB D I O Data plus 4 GND P Ground ...

Page 62: ...t Identification The Sokkia Atlas receiver can be identified by the serial number range shown in Table 16 Table 16 Product Serial Numbers Cellular Modem Serial Number Sokkia Atlas With Digital UHF II No cellular modem 1332 xxxx HSPA modem 1333 xxxx ...

Page 63: ...able to date and should not be considered a comprehensive list The receiver is capable of working with SD SDHC cards with a storage capacity of up to 32GB Sokkia recommends using the following list of SD SDHC cards with your receiver Swissbit Industrial 2GB SanDisk Ultra II Transcends Ultra Industrial 2 GB APRO Industrial 4 GB For optimal and consistent performance Sokkia recommends using the SD S...

Page 64: ...nd possible explosion Tampering with the batteries by end users or non factory authorized technicians will void the battery s warranty Do not disassemble the batteries Do not charge in conditions different than specified Do not use other than the specified battery charger Do not short circuit Do not crush or modify Tampering with the receiver by the end users or non factory authorized technicians ...

Page 65: ...rcuit different from that to which the receiver is powered Consult the dealer or an experienced radio television technician for additional suggestions Industry Canada Compliance This equipment complies with IC radiation exposure limits set forth for uncontrolled equipment and meets RSS 102 of the IC radio frequency RF exposure rules This equipment has very low levels of RF energy that it deemed to...

Page 66: ...s in compliance with the R TTE and EMC directives from the European Community European Community Declaration of Conformity with R TTE Directive 1999 5 EC The following standards were applied R TTE Directive 1999 5 EEC This equipment is intended to be marketed in the following countries List of National Codes AT DE MT GB BE GR NL IS CY HU PL LI CZ IE PT NO DK IT SK CH EE LV SI BG FILT ES RO FR LU S...

Page 67: ...okkia dass sich das Gerät Sokkia Atlas in Übereinstimmung mit den grundlegenden Anforderungen und den übrigen einschlägigen Bestimmungen der Richtlinie 1999 5 EG befindet Eesti Estonian Käesolevaga kinnitab Sokkia seadme Sokkia Atlas vastavust direktiivi 1999 5 EÜ põhinõuetele ja nimetatud direktiivist tulenevatele teistele asjakohastele sätetele English Hereby Sokkia declares that this Sokkia Atl...

Page 68: ...et de essentiële eisen en de andere relevante bepalingen van richtlijn 1999 5 EG Malti Maltese Hawnhekk Sokkia jiddikjara li dan Sokkia Atlas jikkonforma mal tiijiet essenzjali u ma provvedimenti orajn relevanti li hemm fid Dirrettiva 1999 5 EC Magyar Hungarian Alulírott Sokkia nyilatkozom hogy a Sokkia Atlas megfelel a vonatkozó alapvetõ követelményeknek és az 1999 5 EC irányelv egyéb elõírásaina...

Page 69: ...atements Compliance This Bluetooth device is compliant to the following profiles of the core spec version 2 1 2 1 EDR Baseband HCI Link Manager Radio The radio has been tested using the maximum antenna gain of 2 3 dBi and the Bluetooth qualification is valid for any antenna with the same or less gain ...

Page 70: ...e to the product resulting from an accident disaster misuses abuse or modification of the product Warranty service may be obtained from an authorized Sokkia warranty service dealer If this product is delivered by mail purchaser agrees to insure the product or assume the risk of loss or damage in transit to prepay shipping charges to the warranty service location and to use the original shipping co...

Page 71: ...m the satellite to the receiver they must be modulated onto a carrier frequency In the case of the GPS design two frequencies are utilized one at 1575 42 MHz 10 23 MHz x 154 called L1 and the other at 1227 60 MHz 10 23 MHz x 120 called L2 Light Emitting Diode LED Used as indicator lights on the receiver to display the status of the receiver s components and control receiver operations M MAGNET Fie...

Page 72: ...BAS Complements existing global navigation systems SBAS transmits differential corrections and messages for navigation satellites that are within sight of a network or reference stations in a wide area such as a continent Sokkia Receiver Utility SRU Receiver configuration software for receivers and peripheral devices Static Survey Location determination when the receiver s antenna is stationary Th...

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