4 Wires Car GPS Tracker G17H With Ignition Checking And Relay Functions
1. Specification:
| Format | Length(Byte) | Example |
| Information Content | Start Bit | 2 | 0x78 0x78 |
| Packet Length | 1 | 0x1F |
| Protocol Number | 1 | 0x12 |
| GPS Information | Date Time | 6 | 0x0B 0x08 0x1D 0x11 0x2E 0x10 |
| Quantity of GPS information satellites | 1 | 0xCF |
| Latitude | 4 | 0x02 0x7A 0xC7 0xEB |
| Longitude | 4 | 0x0C 0x46 0x58 0x49 |
| Speed | 1 | 0x00 |
| Course, Status | 2 | 0x14 0x8F |
| LBS Information | MCC | 2 | 0x01 0xCC |
| MNC | 1 | 0x00 |
| LAC | 2 | 0x28 0x7D |
| Cell ID | 3 | 0x00 0x1F 0xB8 |
| Mileage statistics | 4 | 0x00 0x00 0x00 0x00 |
| Serial Number | 2 | 0x00 0x03 |
| Error Check | 2 | 0x80 0x81 |
| Stop Bit | 2 | 0x0D 0x0A |
- Start Bit
For details see Data Packet Format section 4.1.
- Packet Length
For details see Data Packet Format section 4.2.
- Protocol Number
For details see Data Packet Format section 4.3.
- Date Time
-
- 4 Wires Car GPS Tracker G17H With Ignition Checking And Relay Functions
| Format | Length(Byte) | Example |
| Year | 1 | 0x0A |
| Month | 1 | 0x03 |
| Day | 1 | 0x17 |
| Hour | 1 | 0x0F |
| Minute | 1 | 0x32 |
| Second | 1 | 0x17 |
Example: 2010-03-23 15:30:23
Calculated as follows: 10(Decimal)=0A(Hexadecimal)
3 (Decimal)=03(Hexadecimal)
23(Decimal)=17(Hexadecimal)
15(Decimal)=0F(Hexadecimal)
50(Decimal)=32(Hexadecimal)
23(Decimal)=17(Hexadecimal)
Then the value is: 0x0A 0x03 0x17 0x0F 0x32 0x17
- Length of GPS information, quantity of positioning satellites
The field is 1 Byte displayed by two hex digits, wherein the first one is for the length of GPS information and the second one for the number of the satellites join in positioning.
Example: if the value is 0xCB, it means the length of GPS information is 12 and the number of the positioning satellites is 11.
(C = 12Bit Lenght ,B = 11 satellites)
- Latitude
Four bytes are consumed, defining the latitude value of location data. The range of the value is 0-162000000, indicating a range of 0°-90°. The conversion method thereof is as follow:
converting the value of latitude and longitude output by GPS module into a decimal based on minute; multiplying the converted decimal by 30000; and converting the multiplied result into hexadecimal.
Example: 22º32.7658’=(22X60+32.7658)X30000=40582974, then converted into a hexadecimal number
40582974(Decimal)= 26B3F3E(Hexadecimal)
at last the value is 0x02 0x6B 0x3F 0x3E.
- Longitude
Four bytes are consumed, defining the longitude value of location data. The range of the value is 0-324000000, indicating a range of 0°-180°.
The conversion method herein is same to the method mentioned in Latitude (see section 5.2.1.6).
- Speed
One byte is consumed, defining the running Speed of GPS. The value ranges from 0x00 to 0xFF indicating a range from 0 to 225km/h.
e.g. 0x00 represents 0 km/h.
0x10 represents 16km/h.
0xFF represents 255 km/h.
4 Wires Car GPS Tracker G17H With Ignition Checking And Relay Functions
Gurantee:
2. All of our product there is a 2 year quanlity assurance.
3. Sample fee will not be returned.
Product Configuration:
1. Standard configuration
1) Portable GPS Device 1 pcs
2) Power lines 1 pcs
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4 Wires Car GPS Tracker G17H 5 Meter Accurancy With Ignition Checking Images
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