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Seres Reference Manual

64

Note - Please ensure that you save any changes that you wish to
survive beyond the current power-up by using the $JSAVE
command and wait for the ‘

$> Save Complete’

response.

5.4.1

$JASC

Using this command, you may turn GPS data messages on at a particular
update rate or off. When turning messages on, you have the choice of
various update rates available, depending on what your requirements are.

This command has the following layout:

$JASC,GPmsg,r[,OTHER]<CR><LF>

Where ‘msg’ is the name of the data message and ‘r’ is the message rate, as
shown in the table below. Sending the command without the optional
[,OTHER] data field (without the square braces) will

A message is turned off by sending a command with a zero value for the ‘r’
field.

msg

r (Hz)

Description

GPGGA

5, 1, 0, or .2

Global Positioning System Fix Data

GPGLL

5, 1, 0, or .2

Geographic Position – Latitude/Longitude

GPGSA

1 or 0

GNSS (Global Navigation Satellite System) DOP
and Active Satellites

GPGST

1 or 0

GNSS Pseudorange Error Statistics

GPGSV

1 or 0

GNSS Satellites in View

GPRMC

5, 1, 0, or .2

Recommended Minimum Specific GNSS Data

GPRRE

1 or 0

Range residual message

GPVTG

5, 1, 0, or .2

Course Over Ground and Ground Speed

GPZDA

5, 1, 0, or .2

Time and Date

When the ‘,OTHER’ data field is specified (without the square brackets),
this command will enact a change in the $GPmsg message on the other
port.

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Содержание Seres

Страница 1: ...Seres Reference Manual Part Number 875 0056 000 Date September 2002...

Страница 2: ...ST are trademarks of CSI Wireless Inc All other trademarks are the property of their respective owners FCC Notice This device complies with Part 15 of the FCC Rules Operation is subject to the followi...

Страница 3: ...The end purchaser s exclusive remedy under this warranty shall be limited to the repair or replacement at the option of CSI Wireless of any defective Products or components thereof The end user shall...

Страница 4: ...improvements or alterations to existing Products No Other Warranties THE FOREGOING WARRANTY IS EXCLUSIVE OF ALL OTHER WARRANTIES WHETHER WRITTEN ORAL IMPLIED OR ARISING BY STATUTE COURSE OF DEALING O...

Страница 5: ...le this warranty shall be governed by the laws of the State of Arizona In the event that any provision hereof is held to be invalid by a court of competent jurisdiction such provision shall be severed...

Страница 6: ...Seres Reference Manual vi...

Страница 7: ...nings xx Introduction 1 1 1 GPS 1 1 1 1 How it Works 1 1 1 2 GPS Services 2 1 2 Differential GPS 2 1 2 1 How it Works 3 1 2 2 Real Time DGPS 3 1 3 DGPS Format 3 1 4 Factors Affecting DGPS Accuracy 4 1...

Страница 8: ...m Parts List 24 2 2 Cable Interface 24 2 3 Seres Placement 25 2 4 Environmental Considerations 25 2 5 Power Considerations 26 2 6 Methods of Mounting the Seres 26 2 6 1 Magnetic Mount 26 2 6 2 Surface...

Страница 9: ...41 4 Seres Operation 42 4 1 Powering the Seres 42 4 2 Communicating with the Seres 42 4 2 1 NMEA 0183 Interface 43 4 2 2 Binary Interface 44 4 2 3 RTCM SC 104 Protocol 44 4 3 Configuring the Seres 46...

Страница 10: ...1 JPOS 57 5 3 12 JQUERY GUIDE 58 5 3 13 JRESET 59 5 3 14 JSAVE 59 5 3 15 JSHOW 60 5 3 16 JT 63 5 4 GPS Commands 63 5 4 1 JASC 64 5 4 2 JAGE age 65 5 4 3 JOFF 65 5 4 4 JMASK 66 5 4 5 JBIN 66 5 4 6 J4ST...

Страница 11: ...a Message 81 5 7 6 RMC Data Message 82 5 7 7 RRE Data Message 83 5 7 8 VTG Data Message 84 5 7 9 ZDA Data Message 85 5 7 10 RD1 Data Message 86 6 Frequently Asked Questions 88 6 1 General 88 6 2 Suppo...

Страница 12: ...Seres Reference Manual xii Appendix A Specifications 100 Appendix B Interface 102 Appendix C Surface Mount Template 108 Appendix D Resources 110 Index 113...

Страница 13: ...S Inonspheric Correction Map 18 Figure 1 6 Extrapolated EGNOS Inonspheric Correction Map 18 Figure 1 7 e Dif Error Drift 20 Figure 2 1 Cable Interface 24 Figure 2 2 Surface Mount Installation 28 Figur...

Страница 14: ...Seres Reference Manual xiv...

Страница 15: ...8 Table 5 2 General Commands 50 Table 5 3 GPS Commands 63 Table 5 4 SBAS Commands 68 Table 5 5 e Dif Commands 73 Table 5 6 Data Messages 76 Table 5 7 GGA Data Message Defined 77 Table 5 8 GLL Data Mes...

Страница 16: ...Seres Reference Manual xvi Table A 1 Specifications 100...

Страница 17: ...ntenna system composed of a high performance receiver and antenna integrated within a single enclosure It contains the new CSI Wireless SX 1 GPS engine that brings high performance positioning to a co...

Страница 18: ...s a detailed listing of the default parameters Chapter 5 NMEA 0183 Messages describes the subset of NMEA 0183 commands and queries used to communicate with the Seres system Chapter 6 Frequently Asked...

Страница 19: ...ort csi wireless com Technical Support is available from 8 00 AM to 5 00 PM Mountain Time Monday to Friday To expedite the support process please have the product model and serial number available whe...

Страница 20: ...s site Document Conventions Bold is used to emphasize certain points Notes Cautions and Warnings Notes Cautions and Warnings stress important information regarding the installation configuration and o...

Страница 21: ...on to GPS users at UHF 1 575 GHz frequencies that allows user equipment to calculate a range to each satellite GPS is essentially a timing system ranges are calculated by timing how long it takes for...

Страница 22: ...free of charge worldwide to all civilian users In order to maintain a strategic advantage the US DoD used to artificially degrade the performance of the SPS so that the positioning accuracy was limit...

Страница 23: ...tance measurement in order to correct for errors present in the system 1 2 2 Real Time DGPS The base station transmits the range error corrections to remote receivers in real time The remote receiver...

Страница 24: ...orrection services designated RTCM SC 159 The United States Federal Aviation Administration s Wide Area Augmentation System WAAS and other compatible Space Based Augmentation Systems SBAS such as the...

Страница 25: ...atellite orbit errors are typically a greater problem with local area differential systems such as that of radiobeacons The decorrelation effect is such that the satellite s orbit error projects onto...

Страница 26: ...pheric activity Removing the effect of the ionosphere depends on the architecture of the differential network DGPS radiobeacons for example use a more conventional approach that WAAS or SBAS in genera...

Страница 27: ...ay occur The effect of latency is mitigated by new COAST technology within the SLX This technology is especially valuable in conditions of DGPS signal loss where the age of corrections increases for e...

Страница 28: ...of 3 to 5 meters horizontally 95 of the time The accuracy of a particular product depends on the specific receiver s performance characteristics Higher accuracy GPS receivers are able to achieve sub...

Страница 29: ...ugmentation System SNAS The Seres smart antenna is capable of receiving correction data from all compatible SBAS EGNOS is currently in a prototyping phase referred to as the EGNOS System Test Bed ESTB...

Страница 30: ...niques resulting a more consistent system performance regardless of geographic location with respect to reference stations Specifically SBAS calculates separate errors for the following The ionospheri...

Страница 31: ...use and one each is located above both the Pacific Ocean and Northern Brazil Due to their location these satellites may appear lower on the horizon depending on your geographic position on land In reg...

Страница 32: ...3 also shows additional contours for 10 15 and 20 elevations Within the white shaded coverage area at least one of the two satellites is available by line of sight Within the overlap area both satelli...

Страница 33: ...ow elevation angle and the potential for it to be obstructed Ideally testing of the system in the area of its use is recommended to ensure that the signal is sufficiently available Note The SBAS signa...

Страница 34: ...Seres Reference Manual 14 Figure 1 1 WAAS Coverage...

Страница 35: ...Seres Reference Manual 15 Figure 1 2 EGNOS Coverage...

Страница 36: ...at the process of estimating ionospheric corrections beyond the WAAS broadcast map would not be as good as having an extended WAAS map in the first place This difference may lead to minor accuracy deg...

Страница 37: ...Seres Reference Manual 17 Figure 1 3 Broadcast WAAS Ionospheric Correction Map Figure 1 4 Extrapolated WAAS Ionospheric Correction Map...

Страница 38: ...Seres Reference Manual 18 Figure 1 5 Broadcast EGNOS Ionospheric Correction Map Figure 1 6 Extrapolated EGNOS Ionospheric Correction Map...

Страница 39: ...maintains lock on at least four satellites at one time The accuracy of positioning will have a slow drift that limits use of e Dif for approximately 30 to 40 minutes however it depends on how tolerab...

Страница 40: ...om the models used inside the e Dif software engine It s up to you for how long you would like e Dif to function before performing another calibration We recommend that you test this operating mode to...

Страница 41: ...This means that the Seres system is more tolerant than competing products to loss of SBAS or externally input RTCM SC 104 corrections 1 8 Seres Information The CSI Wireless Seres is a smart antenna c...

Страница 42: ...ication with the SERES through dual serial ports The standard extension cable consists of a 10 foot length of cable that breaks into two 4 foot long pigtails terminated with DB9 female serial connecto...

Страница 43: ...Seres Reference Manual 23...

Страница 44: ...it included with the Seres antenna Reference Manual part number 875 0056 000 Optional Pole Mount part number478 0004 00A 2 2 Cable Interface The Seres features a built in extension cable that provides...

Страница 45: ...nity standards This will ensure that tracking performance of the Seres is not compromised giving you the best performance possible Make sure that there is sufficient length of the extension cable avai...

Страница 46: ...mA 12 VDC 2 W Nominal 2 6 Methods of Mounting the Seres The Seres smart antenna may be mounted three different configurations Magnetic mount Surface mount Pole mount Note With each mounting method en...

Страница 47: ...that the planned hole centers agree with the true hole centers if not then adjust Use a center punch on the hole centers in order to guide the drill bit Drill the mounting holes with a 3 16 bit appro...

Страница 48: ...t the antenna on the pole mount bracket Thread the 5 8 11 UNC threaded mount onto a suitable threaded pole tightened only hand tight Place the antenna with magnetic mount installed onto the mounting b...

Страница 49: ...power connectors and terminals on the market from which to choose depending on your specific requirements We suggest that a weather tight connection and connector be used if the connection will be loc...

Страница 50: ...e a voltage higher than the input range as this will damage the antenna Caution Do not operate the Seres with the fuse bypassed Such a modification will void the product warranty 2 6 5 Connecting the...

Страница 51: ...NMEA 0183 binary and RTCM output 3 RXD Seres NMEA 0183 binary and RTCM Input 5 Sig Ground Signal Return 6 Event Marker HCMOS active low falling edge sync 10 k 10 pF load 9 1 PPS 1 Pulse per second ti...

Страница 52: ...the Port A or Port B serial ports 2TX 3 RX NMEA Binary RTCM 5 GND GND TX RX SERES Port A External Device NMEA Binary RTCM Figure 2 6 Port A Interface 2TX 3 RX NMEA Binary RTCM 5 GND GND TX RX SERES Po...

Страница 53: ...sion cable Avoid running cables in areas of excessive heat Keep antenna cables away from corrosive chemicals Do not run the extension cable through door or window jams Keep the cable away from rotatin...

Страница 54: ...aud rate and other communication settings of Seres and the correction source eight data bits no parity and one stop bit 8 N 1 This chapter describes the various modes of operation and features of your...

Страница 55: ...es for the receiver should be over 35 for best tracking performance Foliage or partial signal blockages above the antenna can reduce the reception quality and hence SNR 3 2 SBAS Operation The followin...

Страница 56: ...er begins to successfully acquire the signal it will result in a lower bit error rate For best operation this value should be less than 150 and ideally less than 20 Space Based Augmentation Systems br...

Страница 57: ...ering information for the e Dif application as calibration 3 3 2 Calibration Calibration is the process of zeroing the increasing errors in the e Dif modeling process Calibration can be performed eith...

Страница 58: ...of e Dif cycles per day and monitor performance against a known coordinate This should be done over a number of days with different states of the ionosphere You can monitor the energy level of the ion...

Страница 59: ...ne 1 RS 232C B 9600 8 None 1 RS 232C Table 3 3 Default GPS NMEA Message Output Port GPS NMEA Messages Update Rate A GGA GSV VTG ZDA 1 Hz B GGA GSV VTG ZDA 1 Hz Table 3 4 Default Parameters Max DGPS Ag...

Страница 60: ...remaining 10 channels for GPS This provides effective tracking of multiple SBAS satellites if available The e Dif application if installed also resides within the SX 1 engine In addition to the SX 1 t...

Страница 61: ...unctionality and are also referred to as applications The Seres currently ships with a SBAS WAAS application present by default leaving the other application empty for use with the optional e Dif mode...

Страница 62: ...mmunicate immediately When installed such that the Seres has an unobstructed view of the sky the Seres will provide a position quickly within approximately 60 seconds from a factory cold start SBAS lo...

Страница 63: ...ne second of NMEA data from the Seres follows GPGGA 144049 0 5100 1325 N 11402 2729 W 1 07 1 0 1027 4 M 0 M 0100 61 GPVTG 308 88 T 308 88 M 0 04 N 0 08 K 42 GPGSV 3 1 10 02 73 087 54 04 00 172 39 07 6...

Страница 64: ...ata regarding status and positioning information 4 2 3 RTCM SC 104 Protocol RTCM SC 104 is a standard that defines the data structure for differential correction information for a variety of different...

Страница 65: ...rmance of a GPS receiver The Type 6 message contains null information and is broadcast so that a beacon receiver demodulating the data from the broadcast does not lose lock when the beacon station has...

Страница 66: ...application slots for SBAS operation and optionally e Dif Changing between applications is easy with the use of the JAPP OTHER CR LF command discussed in Chapter 6 4 5 Configuring the Data Message Out...

Страница 67: ...to turn the GPGGA message on at an update rate of 5 Hz on Port A the following command would be used JASC GPGGA 5 OTHER CR LF If you wish to turn the GPGGA message on at 5 Hz on Port B you would issue...

Страница 68: ...age return line feed message terminator An example NMEA sentence follows XXYYY zzz zzz zzz xx CR LF The components of this generic NMEA message example are displayed in Table 5 1 Table5 1 NMEA Message...

Страница 69: ...rom the CSI Wireless subsidiary Satloc via their Web site at www satloc com This Web site also includes an online SLXg manual that has a chapter devoted to the use of this utility The following figure...

Страница 70: ...es JAPP This command is used to query the current applications and also choose the current application JBAUD Baud rate change command for the Seres JCONN Virtual circuit command used to interface to t...

Страница 71: ...ide the Seres This command has the following structure JASC D1 r OTHER CR LF Currently only the RD1 message is currently defined with x 1 The message status variable r may be one of the following valu...

Страница 72: ...tion and also be output through Port A The Seres acts as a pass through for the RTCM data Either port may be configured to accept RTCM data input and this command then allows the opposite port to outp...

Страница 73: ...ine markets for example may be well suited for use of this feature This command has the following layout JALT c v GEOID CR LF Where feature status variable c and threshold variable v may be one of the...

Страница 74: ...wing message JAPP CR LF There are no data fields to specify in this message The receiver will respond with the following message JAPP current other Where current indicates the current application in u...

Страница 75: ...used to set the Seres to use the first and second application It s best to follow up the sending of these commands with a JAPP query to see which application is 1 or 2 These two commands are best used...

Страница 76: ...tween the A and B port if needed This allows you to through the Seres to the device on the opposite port The virtual circuit command has the following form JCONN p CR LF Where the connection type p ma...

Страница 77: ...s used by the Seres smart antenna to enable the e Dif option This command will have the following format JK x CR LF Where x is the subscription key provided by CSI Wireless and is 10 characters in len...

Страница 78: ...ed in decimal degrees This component does not have to be more accurate than approximately half a degree Note this command is not normally required for operation of the Seres smart antenna 5 3 12 JQUER...

Страница 79: ...e ALL field is present without the square brackets the almanac and OmniSTAR spot beam tables are also defaulted Issuing this command with this optional data field is not usually necessary unless the O...

Страница 80: ...f or changing the configuration further Saving Configuration Please Wait Save Complete No data fields are required The receiver will indicate that the configuration is being saved and will notify you...

Страница 81: ...port 4 This line indicates that GPVTG is output at a rate of 1 Hz from the other port 5 This line indicates that the GPGSV is output at a rate of 1 Hz from the other port 6 This line indicates that G...

Страница 82: ...itude aiding 0 0 0 0 indicates the aiding value if specified either specified height or PDOP threshold 10 0 Residual limit for the JLIMIT command which is not supported by the Seres 5 Elevation mask c...

Страница 83: ...description of the commands supported by the GPS engine for its configuration and operation Table 5 3 GPS Commands Message Description JASC GP This command is used to configure the NMEA message outpu...

Страница 84: ...ding the command without the optional OTHER data field without the square braces will A message is turned off by sending a command with a zero value for the r field msg r Hz Description GPGGA 5 1 0 or...

Страница 85: ...ion age older than 1800 seconds we recommend that you consider testing the receiver to ensure that the new setting meets your requirements as accuracy will slowly drift with increasing time This comma...

Страница 86: ...l be ignored even if available The default angle is 5 degrees as satellites available below this angle will have significant tropospheric refraction errors This message has the following format JMASK...

Страница 87: ...age containing satellite and almanac information Bin99 5 1 0 or 2 Binary message containing GPS diagnostic information The Seres will reply with the following response 5 4 6 J4STRING This command allo...

Страница 88: ...mbers for use with other Space Based Augmentation Systems SBAS JGEO This command is used to poll the WAAS demodulator for information relating to your current location and WAAS satellites JRD1 This co...

Страница 89: ...pond with the following message JWAASPRN prn1 prn2 Where prn1 indicates the first PRN number and prn2 indicates the second PRN number The PRN numbers for WAAS are 122 and 134 EGNOS is currently using...

Страница 90: ...z This message response is summarized in the following table Data Field Description JGEO Message header Sent 1575 4200 Frequency sent to the digital signal processor Used 1575 4200 Frequency currently...

Страница 91: ...ollow the format in the previous table for the JGEO query 5 5 3 JRD1 This command is used to request diagnostic information from the Seres antenna To command the Seres to output the diagnostic informa...

Страница 92: ...following values r Description 0 ON 1 OFF When the OTHER data field is specified without the square brackets this command will turn RTCM data on or off on the other port The Seres will reply with the...

Страница 93: ...anges that you wish to survive beyond the current power up by using the JSAVE command and wait for the Save Complete response 5 6 1 JRAD 1 This command is used to display the current reference positio...

Страница 94: ...1 lat lon alt This command is a derivative of the JRAD 1 P command and is used when absolute positioning is desired This command has the following layout JRAD 1 lat lon alt CR LF Where the data fields...

Страница 95: ...2 OK 5 6 5 JRAD 3 This command is used for two primary purposes The first is to invoke the e Dif function once the unit has started up with the e Dif application active The second purpose is to updat...

Страница 96: ...sufficient for your needs 5 7 Data Messages The following subsections describe the NMEA data messages listed in Table 5 6 in detail Table 5 6 Data Messages Message Max Rate Description GPGGA 5 Hz Glob...

Страница 97: ...m Latitude in degrees minutes and decimal minutes s s N or s S for North or South latitude dddmm mmmmm Longitude in degrees minutes and decimal minutes s s E or s W for East or West longitude n Qualit...

Страница 98: ...m mmmm s hhmmss ss s cc CR LF Table 5 8 GLL Data Message Defined Field Description ddmm mmmmm Latitude in degrees minutes and decimal minutes s s N or s S for North or South latitude dddmm mmmmm Longi...

Страница 99: ...format GPGSA a b cc dd ee ff gg hh ii jj kk mm nn oo p p q q r r cc CR LF Table 5 9 GSA Data Message Defined Field Description a Satellite acquisition mode M manually forced to 2D or 3D A automatic sw...

Страница 100: ...nds of the GPS position a a Root mean square rms value of the standard deviation of the range inputs to the navigation process Range inputs include pseudoranges and differential GNSS DGNSS corrections...

Страница 101: ...essage into its components This message has the following format GPGSV t m n ii ee aaa ss ii ee aaa ss cc CR LF Table 5 11 GSV Data Message Defined Field Description t Total number of messages m Messa...

Страница 102: ...ss UTC time in hours minutes seconds of the GPS position a Status is valid if a A status is invalid if a V ddmm mmmmm Latitude in degrees minutes and decimal minutes n S N or s S for North or South la...

Страница 103: ...ponents This message has the following format GPRRE n ii rr ii rr hhh h vvv v cc CR LF Table 5 13 RRE Data Message Defined Field Description n Number of satellites used in position computation ii Sate...

Страница 104: ...d Field Description ttt True course over ground ttt 000 to 359 in degrees c True course over ground indicator c T always ttt Magnetic course over ground ttt 000 to 359 in degrees output with magnetic...

Страница 105: ...has the following format GPZDA hhmmss ss dd mm yyyy xx yy cc CR LF Table 5 15 ZDA Data Message Defined Field Description hhmmss ss UTC time in hours minutes seconds of the GPS position dd Day dd 0 to...

Страница 106: ...ed 1 if DSPStat 1B or 1F BER BER2 Bit error rate bit error rates are given for both SBAS satellites being tracked AGC L band Signal strength DDS 0 0 for SBAS Doppler 0 for SBAS DSPStat A status bit ma...

Страница 107: ...n is good 20 Not used 40 Not used The DiffStatus data field is not supported by the Seres An example of the NavCondition is presented in the following table for the 179889A value Field Description A T...

Страница 108: ...logy as when using SBAS However SBAS corrections have the advantage that they are separated into separate error components allowing the Seres to anticipate how errors will change over the COASTing per...

Страница 109: ...ery compact yet offers a high degree of performance There are a number of smart antenna products on the marketplace however very few of these are suitable for commercial use in applications such as Ag...

Страница 110: ...are likely to fall within one of the following categories It s important to review each in detail to remove each from being a suspect source of the problem Power Communication and Configuration GPS Re...

Страница 111: ...cable and its connector for signs of damage 2 Ensure that you are properly powering the system with the correct voltage 3 Since you re required to terminate the power input with your choice of connec...

Страница 112: ...t equipment Q Am I able to configure the two serial ports with different baud rates A Yes the ports are independent For instance you may have one port set to 4800 and the other to 19 200 or vice versa...

Страница 113: ...Satloc Web site This application is a very useful tool for graphically viewing tracking performance positioning accuracy and more As this utility uses the binary messages supported by the Seres these...

Страница 114: ...the availability of redundant satellites only four are required for a position However as more satellites are blocked the more impact this could have your positioning accuracy 6 6 SBAS Reception and...

Страница 115: ...on SBAS due obstructions and the low satellite elevation angles at my geographic location A No provided that the receiver is receiving a full set of corrections relatively often Using the COAST techn...

Страница 116: ...d of differentially correcting multipath signals There s only ways of reducing their impact on the measurements gathered by the receiver 6 8 External Corrections Q My Seres system doesn t appear to be...

Страница 117: ...the location for which you would like a position Often this is the center line of a vehicle or on a pole mount for georeferencing Q Will the method of mounting the Seres magnetic mount surface mount...

Страница 118: ...evice or with the use with SLXMon running on a PC Verify that Seres is locked to GPS satellites this can often be done on the receiving device or with the use with SLXMon running on a PC Check integri...

Страница 119: ...value No DGPS position in external RTCM mode Verify that the baud rate of the RTCM input port matches the baud rate of the external source Verify the pin out between the RTCM source and the RTCM input...

Страница 120: ...te Rate Up to 5 Hz Serial Interface Specifications standard cable Item Specification Serial Port Interface Level RS 232C Port A Connector DB9 Socket Port B Connector DB9 Socket Available Baud Rates 48...

Страница 121: ...Seres Reference Manual 101 Environmental Specifications Item Specification Storage Temperature 40 C to 85 C Operating Temperature 30 C to 70 C Humidity 95 Non Condensing...

Страница 122: ...ool the data output from either Seres communication port is NMEA data that provides a variety of information such as position speed satellites tracked and more This is the normal data output and mode...

Страница 123: ...match that of the data logging or monitoring device The Seres only supports an RS 232C serial port of the external device Refer to Section 5 3 7 for instructions related to setting the Seres baud rat...

Страница 124: ...TCM Data Output Interface Note For successful communications the baud rate of the Seres port must be set to match that of the separate GPS receiver Additionally you must interface the Seres to an RS 2...

Страница 125: ...hing the Port A and B references To establish communications between the Seres and an external GPS receiver you must Connect Pin 3 receive RX of the RTCM input port to transmit pin TX of the external...

Страница 126: ...cessful communications the baud rate of the Seres differential port must be set to match that of the external correction source The correction source must support an RS 232 interface level and the bau...

Страница 127: ...Seres Reference Manual 107...

Страница 128: ...108 Appendix C Surface Mount Template The following template should be used to plan for the location of mounting holes used when surface mounting the Seres smart antenna We suggest that you photocopy...

Страница 129: ...Seres Reference Manual 109...

Страница 130: ...ervice Version 2 2 Developed by Special Committee No 104 RTCM 1998 1800 Diagonal Rd Suite 600 Alexandria VA 22314 2840 USA Tel 1 703 684 4481 Fax 1 703 836 4429 Radio Technical Commission for Aeronaut...

Страница 131: ...t schedule wwws raytheontands com waas ESA EGNOS System Test Bed Web Site This site contains information relating to past performance real time performance and broadcast schedule of EGNOS www esa int...

Страница 132: ...Seres Reference Manual 112...

Страница 133: ...E 57 JRAD 1 72 73 JRAD 1 P 72 JRAD 2 73 JRAD 3 74 JRD1 70 JRESET 58 JSAVE 58 JSHOW 59 JT 61 JWAASPRN 68 A Accuracy 4 5 7 B Baud Rate 32 37 102 103 105 Bit Error Rate WAAS 35 C Cable Interface 23 Cable...

Страница 134: ...wer Considerations 25 M Multipath 7 N NMEA 0183 42 47 NMEA 0183 messages 47 P Port A Pin out 30 Port B Pin out 30 Power Cable Fuse 29 R RTCM SC 104 4 S Selective Availability SA 2 Serial Port Defaults...

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