The BlackBox GPS can store up to 170,000 positions in a circular buffer, meaning that when it reaches record 170,000 it will start overwriting old data starting from the oldest one, avoiding loosing the last recorder positions.
Each record has the following data:
- GPS Time
- Latitude
- Longitude
- Speed
The BlackBox GPS has a flash type memory with an internal rechargeable battery that stores data and keeps it there although the power is off. Memory cannot be expanded.
Short explanation about how the datalogger works:
The BlackBox has three parameters to configure the datalogger:
- Check Interval (CI)
- Max elapsed time (MT)
- Max distance (MD)
and a very easy algorithm which can be summarized this way:
The datalogger checks every CI seconds whether it has to log data or not, if more (or equal) than MT seconds has have been elapsed OR MD meters have been traveled since the last recorded position, then it stores the current position in its memory, else it waits other CI seconds and starts over with the process.
Those 3 parameters are fully configurable and allows a great flexibility and ease of use while keeping unwanted data (very large stop times for instance) to a minimum.
The BlackBox Manager (or BBM) alows you to download all stored data to your PC and expert it to different formats, like HTML, CSV or NMEA 0183 format. Also, as the database used by this application is open, you can extract data from it and import it into your favorite mapping application.
