Stars Navigation Technologies MTI-1 User Manual Download | Manualshive

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2

Active Antenna
Connector

MCX ,SMA ,SMB or others OEM specified connector available,please refer to
our gps antenna product

Environmental Characteristics

Temperature

Operating

-30 deg. C to +80 deg. C

Storage

-40 deg. C to +85 deg. C

Physical
Characteristics

Dimension:

PCB SIDE VIEW

PCB TOP VIEW

Interface Connection

* Pin-out of the 20-pin interface connector

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Summary of Contents for MTI-1

Page 1: ...NMEA 0183 protocol All in view 12 channel parallel processing SnapLock 100ms re acquisition time Cold start under 45 seconds average Superior urban canyon performance FoliageLock for weak signal tracking Optional build in SuperCap to reserve system data for rapid satellite acquisition Full duplex RS 232 port for navigation and control messages Architecture Differential GPS capability through 2nd R...

Page 2: ...0 meters 60 000 feet max Velocity 515 meters sec 1000knots max Power Voltage supply 3 8Vdc 6 5Vdc Current supply Continuous mode 60mA typical Backup Power Trickle power mode 25mA typical 2 5V to 3 6V Backup Current 10uA typical Serial Port one for GPS one for DGPS Ports Electrical level TTL level Output voltage level 0 3 5v RS 232 level Communication Full duplex asynchronous Code type ASCII GPS Pr...

Page 3: ...vailable please refer to our gps antenna product Environmental Characteristics Temperature Operating 30 deg C to 80 deg C Storage 40 deg C to 85 deg C Physical Characteristics Dimension PCB SIDE VIEW PCB TOP VIEW Interface Connection Pin out of the 20 pin interface connector ...

Page 4: ...SERVED Reserved Interface description VANT antenna DC power input DC voltage is for active antenna VDC DC power input This is the main DC supply for a 3 8V 6 5V power module board VBAT Backup battery This is the battery backup input that powers the SRAM and RTC when main power is removed Typical current draw is 10uA Without an external backup battery or Gold capacitor the module engine board will ...

Page 5: ...ritten software Normally this pin must be kept in high and if you don t use this pin please connect a resistor to 3 5V to pull high TXB No function as so far Do not connect RXB This is the auxiliary receive channel for inputting differential corrections to the engine board to enable DGPS navigation Time mark This pin provides one pulse per second output from the engine board that is synchronized t...

Page 6: ...s Units M meters Geoid Separation1 meters Units M meters Age of Diff Corr second Null fields when DGPS is not used Diff Ref Station ID 0000 Checksum 18 CR LF End of message termination 1 SiRF Technology Inc does not support geoid corrections Values are WGS84 ellipsoid heights Table B 3 Position Fix Indicator Value Description 0 Fix not available or invalid 1 GPS SPS Mode fix valid 2 Differential G...

Page 7: ...2 2D 3 3D GSV GNSS Satellites in View Table B 8 contains the values for the following example GPGSV 2 1 07 07 79 048 42 02 51 062 43 26 36 256 42 27 27 138 42 71 GPGSV 2 2 07 09 23 313 42 04 19 159 41 15 12 041 42 41 Table B 8 GSV Data Format Name Example Description Message ID GPGSV GSV protocol header Number of Messages1 2 Range 1 to 3 Message Number1 1 Range 1 to 3 Satellites in View 07 Name Ex...

Page 8: ...ains the values for the following example GPRMC 161229 487 A 3723 2475 N 12158 3416 W 0 13 309 62 120598 10 Table B 10 RMC Data Format Name Example Units Description Message ID GPRMC RMC protocol header UTC Time 161229 487 hhmmss sss Status A A data valid or V data not valid Latitude 3723 2475 ddmm mmmm N S Indicator N N north or S south Longitude 12158 3416 dddmm mmmm E W Indicator W E east or W ...

Page 9: ...ters Format PSRF100 protocol baud DataBits StopBits Parity CKSUM CR LF protocol 0 SiRF Binary 1 NMEA 4 USER1 baud 1200 2400 4800 9600 19200 38400 DataBits 8 7 Note that SiRF protocol is only valid f8 Data bits StopBits 0 1 Parity 0 None 1 Odd 2 Even Example 1 Switch to SiRF Binary protocol at 9600 8 N 1 PSRF100 0 9600 8 1 0 0C CR LF Example 2 Switch to User1 protocol at 38400 8 N 1 PSRF100 4 38400...

Page 10: ...es the receiver to search for the correct satellite signals at the correct signal parameters Correct initialization parameters will enable the receiver to acquire signals more quickly and thus produce a faster navigational solution When a valid Navigation Initialization command is received the receiver will restart using the input parameters as a basis for satellite selection and acquisition Forma...

Page 11: ...ID 102 Set PORT B parameters for DGPS input This command is used to control Serial Port B that is an input only serial port used to receive RTCM differential corrections Differential receivers may output corrections using different communication parameters The default communication parameters for PORT B are 9600 Baud 8data bits 0 stop bits and no parity If a DGPS receiver is used which has differe...

Page 12: ...lso be enabled or disabled depending on the needs of the receiving program NMEA message settings are saved in battery backed memory for each entry when the message is accepted Format PSRF103 msg mode rate cksumEnable CKSUM CR LF msg 0 GGA 1 GLL 2 GSA 3 GSV 4 RMC 5 VTG mode 0 SetRate 1 Query rate Output every rate seconds off 0 max 255 cksumEnable 0 disable Checksum 1 Enable checksum for specified ...

Page 13: ...avigational soution When a valid LLANavigationInitialization command is received the receiver will restart using the input parameters as a basis for satellite selection and acquisition Format PSRF104 Lat Lon Alt ClkOffset TimeOfWeek WeekNo ChannelCount ResetCfg CKSUM CR LF Lat Latitude position assumed positive north of equator and negative south of equator float possibly signed Lon Longitude posi...

Page 14: ... 12 3 37 F Development Data On Off ID 105 Switch Development Data Messages On Off Use this command to enable development debug information if you are having trouble getting commands accepted Invalid commands will generate debug information that should enable the user to determine the source of the command rejection Common reasons for input command rejection are invalid checksum or parameter out of...

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