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Parallax VPN1513, Manual

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Page: 10 / 28

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GPS Active Antenna Specification (Recommendation)

Frequency: 1575.42 + 2MHz Axial Ratio: 3 dB Typical output Impedance: 50

Ω

Polarization: RHCP

Amplifier Gain: 18~22dB Typical Output VSWR: 2.0 Max. Noise Figure: 2.0 dB Max Antenna Input
Voltage: 2.85V (Typ.)

Dimensions

接地10K
电阻

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Summary of Contents for VPN1513

Page 1: ...BASIC Stamp 2 module The Propeller is also fully reprogrammable and includes access to all 32 IO pins allowing the GPS Receiver Module to be easily transformed into a standalone device Features Track...

Page 2: ...h a Propeller co processor also known as Smart mode Users may also choose to receive raw NMEA0183 strings utilizing the RAW pin Details on both modes are included in the table below Mode Details SMART...

Page 3: ...Copyright Parallax Inc VPN1513 GPS Receiver Module 28506 v1 1 6 9 2011 Page 3 of 5 Module Schematic...

Page 4: ...0x01 GetValid Check validity of data string 1 0 Not Valid 1 Valid 0x02 GetSats Number of acquired satellites 20 max 1 Satellites 0x03 GetTime Time UTC Greenwich Mean Time 3 Hours Minutes Seconds 0x04...

Page 5: ...ver Module 28146 by changing the baud rate to 9600 This modified code can be downloaded from the VPN1513 GPS Receiver Module s product page visit www parallax com and search 28506 This program also us...

Page 6: ...ing Sensitivity 159 dBm Extremely fast TTFF Time To First Fix at low signal level Two serial ports 4Mb flash Built in LNA Compact size 15 9mm 13 1 mm 2 2mm suitable for space sensitive application One...

Page 7: ...AAS EGNOS MSAS Datum WGS 84 Interface I O Pins 2 serial ports Physical Characteristic Type 36 pin stamp holes Dimensions 15 9 mm 13 1 mm 2 2 mm 0 2mm DC Characteristics Power Supply 3 3Vdc 5 Backup Vo...

Page 8: ...age should be between 2 0v and 5 0v 6 GND Ground 7 BOOTSEL Set this pin to high for programming flash 8 GND Ground 9 GND Ground 10 GND Ground 11 VCC This is the main DC supply for a 3 3V 5 DC input po...

Page 9: ...main transmits channel for outputting navigation and measurement data to user s navigation software or user written software Output TTL level 0V 2 85V 31 RXA This is the main receive channel for rece...

Page 10: ...tion Recommendation Frequency 1575 42 2MHz Axial Ratio 3 dB Typical output Impedance 50 Polarization RHCP Amplifier Gain 18 22dB Typical Output VSWR 2 0 Max Noise Figure 2 0 dB Max Antenna Input Volta...

Page 11: ...Recommended Layout PAD...

Page 12: ...Tolerance 0 1mm VPN1513 Version 1 0 VPN1513 Application guideline Application Circuit 1 GPS_3V3 R7 10K...

Page 13: ...RXA TXA R1 4 7K 10K Recommend RESET Circuit GPS_3V3 ACTIVE LOW RESET INPUT R3 270R RESET...

Page 14: ...traces as short as possible Antenna Keep the active antenna on the top of your system and confirm the antenna radiation pattern axial ratio power gain noise figure VSWR are correct when you Setup the...

Page 15: ...ces closed the other signal path and routing it on the top layer Keep the RF traces as short as possible VBAT This is the battery backup input that powers the SRAM and RTC when main power is removed T...

Page 16: ...TSEL Set this pin to high for programming flash VPN1513 Demo Kit Test Description Test Board Connection VPN1513 Demo Kit Demo Kit JP1 Male Connection Test Board J5 Female Definition of Pin assignment...

Page 17: ...NC 14 TXB 15 RXB 16 GND 17 NC 18 GND 19 NC 20 NC JP2 Pin Signal Name Pin Signal Name 1 nWakeup 2 NC 3 TIMESYNC 4 NC 5 TIMEMARK 6 NC 7 GPIO 8 NC 9 ECLK 10 NC 11 RESET 12 NC 13 BOOTSEL 14 NC 15 NC 16 NC...

Page 18: ...mmm N S Indicator N N north or S south Longitude 12158 3416 dddmm mmmm E W Indicator W E east or W west Position Fix Indicator 1 See Table B 3 Satellites Used 07 Range 0 to 12 HDOP 1 0 Horizontal Dilu...

Page 19: ...LF End of message termination GSA GNSS DOP and Active Satellites Table B 5 contains the values for the following example GPGSA A 3 07 02 26 27 09 04 15 1 8 1 0 1 5 33 Table B 5 GSA Data Format Name Ex...

Page 20: ...to 99 null when not tracking Checksum 71 CR LF End of message termination Depending on the number of satellites tracked multiple messages of GSV data may be required RMC Recommended Minimum Specific...

Page 21: ...tion parameters baud data bits stop bits parity Generally this command would be used to switch the module back to SiRF Binary protocol mode where a more extensive command message set is available For...

Page 22: ...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...

Page 23: ...a Valid warm hotstarts 1 0 02 clear ephemeris warm start 1 0 04 clear memory Cold start 1 UBYTE Example Start using known position and time PSRF101 2686700 4304200 3851624 96000 497260 921 12 3 7F C S...

Page 24: ...UM CR LF baud 1200 2400 4800 9600 19200 38400 DataBits 8 StopBits 0 1 Parity 0 None Odd 1 Even 2 Example Set DGPS Port to be 9600 8 N 1 PSRF102 9600 8 1 0 12 D Query Rate Control ID 103 Query standard...

Page 25: ...01 21 E LLA Navigation lnitialization ID 104 Parameters required to start using Lat Lon Alt This command is used to initialize the module for a warm start by providing current position in Latitude Lo...

Page 26: ...umed positive east of Greenwich and negative west of Greenwich Float possibly signed Alt Altitude position float possibly signed ClkOffset Clock Offset of the receiver in Hz use 0 for last saved value...

Page 27: ...ormation 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 specified range This setting i...

Page 28: ...1984 which provides a worldwide common grid system that may be translated into local coordinate systems or map datums Local map datums are a best fit to the local shape of the earth and not valid wor...

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