+ <section>
+ <title>Maximum Flight Log Size</title>
+ <para>
+ This sets the space (in kilobytes) allocated for each flight
+ log. The available space will be divided into chunks of this
+ size. A smaller value will allow more flights to be stored,
+ a larger value will record data from longer flights.
+ </para>
+ <para>
+ During ascent, TeleMetrum records barometer and
+ accelerometer values 100 times per second, other analog
+ information (voltages and temperature) 6 times per second
+ and GPS data once per second. During descent, the non-GPS
+ data is recorded 1/10th as often. Each barometer +
+ accelerometer record takes 8 bytes.
+ </para>
+ <para>
+ The default, 192kB, will store over 200 seconds of data at
+ the ascent rate, or over 2000 seconds of data at the descent
+ rate. That's plenty for most flights. This leaves enough
+ storage for five flights in a 1MB system, or 10 flights in a
+ 2MB system.
+ </para>
+ <para>
+ The configuration block takes the last available block of
+ memory, on v1.0 boards that's just 256 bytes. However, the
+ flash part on the v1.1 boards uses 64kB for each block.
+ </para>
+ </section>