Contents 1. Introduction of VK2828U7G5LF Features Appearance and Size Pins Working Conditions Normal Worki

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G P S / G N S S VK1097U7M3 DataSheet Contents 1. Introduction of VK2828U7G5LF... 错误! 未定义书签 1.1 Features... 错误! 未定义书签 1.2 Appearance and Size... 错误! 未定义书签 1.3 Pins... 错误! 未定义书签 2. Working Conditions.

1 G P S / G N S S VK1097U7M3 DataSheet Contents 1. Introduction of VK2828U7G5LF... 错误! 未定义书签 1.1 Features... 错误! 未定义书签 1.2 Appearance and Size... 错误! 未定义书签 1.3 Pins... 错误! 未定义书签 2. Working Conditions... 错误! 未定义书签 2.1 Normal Working Requirements... 错误! 未定义书签 2.2 RTC Power Requirements... 错误! 未定义书签 2.3 Digital Interface Level Requirements... 错误! 未定义书签 2.4 Transient Current Chart... 错误! 未定义书签 3. Technical Parameters... 错误! 未定义书签 4. Signal Testing and RF Property... 错误! 未定义书签 4.1 GPS Signal Testing... 错误! 未定义书签 4.2 RF Property... 错误! 未定义书签 VK2828U7G5LF 5. NMEA0183 Protocols... 错误! 未定义书签 5.1 GGA... 错误! 未定义书签 G-Mouse V GLL... 错误! 未定义书签 5.3 GSA... 错误! 未定义书签 5.4 GSV... 错误! 未定义书签 5.5 RMC... 错误! 未定义书签 5.6 VTG... 错误! 未定义书签 6. GPS/GLONASS and BeiDou Switching... 错误! 未定义书签 7. Longitude and Latitude Switching... 错误! 未定义书签 8. Protocols for Setting U-blox Parameters... 错误! 未定义书签 8.1 Disable Outputting Commands... 错误! 未定义书签 8.2 Enable Outputting Commands... 错误! 未定义书签 8.3 Set Baud Rate... 错误! 未定义书签 8.4 Set Outputting Rate... 错误! 未定义书签 8.5 Other Settings... 错误! 未定义书签 9. Packages... 错误! 未定义书签 V.KEL ELECTRONICS (HONG KONG) Co.,Ltd. Hong Kong Office:No 1-21 of Henry Centre, Anle Village, Fenling, Hongkong Tel: V.KEL Communications Equipment (SHENZHEN) Co., Ltd. Shenzhen Office: 101 Room of B Block, Hekan Industral Park, Bantian District, Longgang Town, Shenzhen City Tel: Fax: vkel@vkelcom.com Website:

2 Contents 1. Introduction of VK2828U7G5LF Features Appearance and Size Pins Working Conditions Normal Working Requirements RTC Power Requirements Digital Interface Level Requirements Transient Current Chart Technical Parameters Signal Testing and RF Property GPS Signal Testing RF Property NMEA0183 Protocols GGA GLL GSA GSV RMC VTG GPS/GLONASS and BeiDou Switching Longitude and Latitude Switching Protocols for Setting U-blox Parameters Disable Outputting Commands Enable Outputting Commands Set Baud Rate Set Outputting Rate Other Settings Packages

1 1. Introduction of VK2828U7G5LF 1.1 Features Industry standard GPS antenna of 25 * 25 * 4mm, with high sensitivity Optional interface: UART/TTL, RS232 High-precision TCXO of KDS 0.

3 1 1. Introduction of VK2828U7G5LF 1.1 Features Industry standard GPS antenna of 25 * 25 * 4mm, with high sensitivity Optional interface: UART/TTL, RS232 High-precision TCXO of KDS 0.5PPM Built-in SQI flash to set the parameters as required Built-in RTC crystal and capacitors to start quickly Built-in LNA Optional frequency of data refreshing: 1Hz-10Hz Supports A-GPS service: Assist Now Online and Assist Now Offline Hybrid engine: GPS, GALILEO, SBAS (WAAS, EGNOS, MSAS, GAGAN) 1.2 Appearance and Size

4 1.3 Pins 2 EN GND RX TX VCC PPS 1.25mm spacing between pins, 6 pins Connector PPS Indicator (Green light flashing means positioned) Power Indicator Red lights means the power is working normally Shielding Case Pins Definition Name PPS VCC TX RX GND EN Function Description Output time pulses (pulses per second) The main power supply is +3.3V~+5V, and the power consumption is 50mA in one hour UART/TTL interface, and RS232_TXD is optional UART/TTL interface, and RS232_RXD is optional Connect to the ground Power Enable: high level means the module works, low level means the modules is closed.

5 2. Working Conditions Normal Working Requirements Parameters Min Norm Max Unit Voltage V Working Temperature Current ma Storage Temperature RTC Power Requirements The RTC power is built in the module, and its endurance is 2 hours. Parameters Min Norm Max Unit RTC Voltage V Current Consumption ua 2.3 Digital Interface Level Requirements Parameters Min Norm Max Unit High Level (Input) V Low Level (Input) V High Level (Output) V Low Level (Output) V 2.4 Transient Current Chart

6 4 3. Technical Parameters Module Property Chip UBX-M8030-KT C/A (Data Rate) 1.023MHz Receiving Frequency L 1 [ MHz] Receiving Channel 56 S11 SWR 1.3 S11 SWR 1.3 S21 Log Mag 20db S11 Smith 50Ω±5% Positioning Property Horizontal Position Autonomous<2.5m on average, SBAS < 2.0m on average Speed <0.1m/s Direction <0.5 degrees Timing Accuracy 30ns Coordinate System WGS-84 Max Height 50km Max Speed 500m/s Accelerate 4G Electrical Property Sensitivity Tracking:-162dBm Capturing:-160dBm Cold Start:-148dBm Cold Start 26 seconds on average Warm Start 24 seconds on average Hot Start 1 second on average A-GPS 3 seconds Optional data baud Optional output code 9600bps(by default) [optional: 1200,2400,4800, 19200, 38400, 57600, , ,460800,921600] NMEA 0183 V3.0(GGA, GSA, GSV, RMC, VTG, GLL) Working Environment -40 to 85 Other Parameters Clock Pulse Updating Frequency UART/TTL RS KHz 1-10 Hz YES Optional

7 5 4. Signal Testing and RF Property 4.1 GPS Signal Testing 4.2 RF Property

8 5. NMEA0183 Protocols 6 NMEA 0183 output GGA: time, position, position type GLL: latitude, longitude, UTC GSA: GPS receiver operating mod, satellites for positioning, DOP value GSV: Available GPS satellites information, azimuth, elevation, SNR RMC: time, date, position, speed VTG: the speed information on ground MSS: signal strength Note: the output information and frequency are determined by your setting. Examples $GPGGA, , ,N, ,E,2,08,1.02,115.1,M,-2.4,M,,0000*43 $GPGLL, , N, , E, , A, D*64 $GPGSA,A,3,24,22,14,12,15,25,18,42,,,,,2.20,1.02,1.95*00 $GPGSV,3,1,11,12,31,118,39,14,30,289,44,15,20,059,41,18,68,007,43*75 $GPGSV,3,2,11,21,48,208,,22,39,325,46,24,46,036,44,25,23,160,31*73 $GPGSV,3,3,11,31,03,218,,42,51,128,35,50,46,122,36*4F $GPRMC, ,A, ,N, ,E,0.13, ,130214,,,D*7F $GPVTG, , T, M, 0.13, N, 0.2, K*6E

9 7 5.1 GGA Example: $GPGGA, , ,N, ,E,2,08,1.02,115.1,M,-2.4,M,,0000*43 Name Example Unit Description Message ID $GPGGA GGA protocol head UTC hhmmss.ss latitude ddmm.mmmmm N/S direction N N=North, S=South longitude dddmm.mmmmm E/W direction E W=West, E=East Position direction 2 Number of satellites 08 Range: : not position 1:SPS mode, valid position 2: Differentia, SPS mode, valid position 3: PPS mode, valid position HDOP 1.02 Horizontal accuracy MSL amplitude meter - Unit M meter Ground -2.4 meter - Unit M - Differentiated time second Invalid as there is no DGPS Differentiated ID 0000 Checksum *43 <CR><LF> Message ends

10 8 5.2 GLL Example: $GPGLL, ,N, ,E, ,A,D*64 Name Example Unit Description Message ID $GPGLL GLL protocol head latitude ddmm.mmmmm N/S direction N N=North, S=South longitude dddmm.mmmmm E/W direction E W=West, E=East UTC hhmmss.ss Status A A=Valid data, V=Invalid data Checksum D*64 <CR><LF> Message ends 5.3 GSA Example: $GPGSA,A,3,24,22,14,12,15,25,18,42,,,,,2.20,1.02,1.95*00 Name Example Unit Description Message ID $GPGSA GSA protocol head Mode 1 A M=Manually ( in 2D/3D positioning mode) A=Automatically Mode 2 3 1: invalid position 2: 2D positioning 3: 3D positioning Satellite using 24 Channel 1 Satellite using 22 Channel 2 Satellite using Channel 12 PDOP 2.20 Positioning accuracy HDOP 1.2 Horizontal accuracy VDOP 1.95 Vertical accuracy Checksum *00 <CR><LF> Message ends

11 9 5.4 GSV Examples: $GPGSV,3,1,11,12,31,118,39,14,30,289,44,15,20,059,41,18,68,007,43*75 $GPGSV,3,2,11,21,48,208,,22,39,325,46,24,46,036,44,25,23,160,31*73 $GPGSV,3,3,11,31,03,218,,42,51,128,35,50,46,122,36*4F Name Example Unit Description Message ID $GPGSV GSV protocol head Message amount 3 Range: 1-3 Message NO. 1 Range: 1-3 Satellites NO. 11 Satellites ID 12 Range: 1-32 Elevation 31 degree The maximum is 90 Azimuth 118 degree Range:0-359 CNR (C/No) 39 dbhz Range: 0-99; Null means there is no positioning Satellites ID 14 Range: 1-32 Elevation 30 degree The maximum is 90 Azimuth 289 degree Range: CNR (C/No) 44 dbhz Range: 0-99; Null means there is no positioning Satellites ID 15 Range: 1-32 Elevation 20 degree The maximum is 90 Azimuth 059 degree Range:0-359 CNR (C/No) 41 dbhz Range: 0-99; Null means there is no positioning Satellites ID 18 Range: 1-32 Elevation 68 degree The maximum is 90 Azimuth 007 degree Range:0-359 CNR (C/No) 43 dbhz Range: 0-99; Null means there is no positioning Checksum *75 <CR><LF> Message ends

12 5.5 RMC 10 Example: $GPRMC, ,A, ,N, ,E,0.13, ,130214,,,D*7F Name Example Unit Description Message ID $GPRMC RMC protocol head UTC hhmmss.ss Status A A=Valid data, V=Invalid data latitude ddmm.mmmmm N/S direction N N=North, S=South longitude dddmm.mmmmm E/W direction E W=West, E=East Speed on the ground 0.13 Knot Direction Degree Date ddmmyy Magnetic variable - Checksum *7F <CR><LF> Message ends 5.6 VTG Example: $GPVTG,309.62,T,,M,0.13,N,0.2,K*6E Name Example Unit Description Message ID $GPVTG VTG protocol head Direction Degree Reference T True North Direction Degree Reference M Magnetic Speed 0.13 Knot Unit N Knot Speed 0.2 Km/h Unit K Km/h Checksum *10 <CR><LF> Message ends

You can modify to the BeiDou protocol though the testing software.

13 6. GPS/GLONASS and BeiDou Switching 11 It is the data of GPS/GLONASS protocol outputting from the module by default. You can modify to the BeiDou protocol though the testing software. The steps are shown in the following figures. Select NMEA(NMEA Protocol) and set the NEMA Version to 4.1, and then click [Send] to save this modification.

14 The $GB indicates that the data meets BeiDou protocol. 12

15 13 7. Longitude and Latitude Switching $GPRMC, ,A, ,N, ,E,0.034,,130214,,,D*7F Input the results in Google Earth and search, you can get the detailed position information.

16 14 8. Protocols for Setting U-blox Parameters You can send commands through serial port to modify the settings. The HEX must be selected when you send commands through the serial port of PC software. It will cost 300ms to start the U-blox for the first time. Please send the following commands to set the parameters after it starts. 8.1 Disable Outputting Commands c d 2a d 0a b f0 0a > Disable GPDTM c a d 0a b f > Disable GPGBS c a d 0a b f fa 0f -> Disable GPGGA c 47 4c 4c 2a d 0a b f fb 11 -> Disable GPGLL c a d 0a b f b -> Disable GPGRS c a d 0a b f fc 13 -> Disable GPGSA c a d 0a b f d -> Disable GPGST c a d 0a b f fd 15 -> Disable GPGSV c 52 4d 43 2a d 0a b f fe 17 -> Disable GPRMC c a d 0a b f ff 19 -> Disable GPVTG c 5a a d 0a b f f -> Disable GPZDA 8.2 Enable Outputting Commands c d 2a d 0a b f0 0a > Enable GPDTM c a d 0a b f > Enable GPGBS c a d 0a b f fb 10 -> Enable GPGGA c 47 4c 4c 2a d 0a b f fc 12 -> Enable GPGLL c a d 0a b f c -> Enable GPGRS c a d 0a b f fd 14 -> Enable GPGSA c a d 0a b f e -> Enable GPGST c a d 0a b f fe 16 -> Enable GPGSV c 52 4d 43 2a d 0a b f ff 18 -> Enable GPRMC c a d 0a b f a -> Enable GPVTG c 5a a d 0a b f > Enable GPZDA 8.3 Set Baud Rate Set baud rate to 4800 b d c d3 fc b Set baud rate to 9600 b d a6 cd b

17 Set baud rate to b d a8 Set baud rate to b d c c4 96 b Set Outputting Rate 1HZ (1 output per second) B E Hz (5 outputs per second) B C DE 6A B E 30 10Hz (10 outputs per second) B A 12 B E Hz (1 output per 3 seconds) B B8 0B D9 41 B E Hz (1 output per 5 seconds) B B1 49 B E Hz (1 output per 10 seconds) B D DD B E Hz (1 output per 20 seconds) B E B E Other Settings Reset B FF F7 Cold Start B FF FF E 61 Hot Start B Reset to Manufacturer Defaults B D 00 FF FF FF FF F 9E Enable the Sleeping Mode(Low Consumption Mode) B Note: There is no data outputting in sleeping mode, but the module still keeps positioning. You can send the Hot Start commands to enable the real-time tracking mode. Save the changes B D FF FF BF

18 16 9. Packages There are 50pcs in every pallet. The dimension of the pallet is shown in the following figure.

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