diff options
Diffstat (limited to 'doc/altusmetrum.xsl')
| -rw-r--r-- | doc/altusmetrum.xsl | 42 |
1 files changed, 14 insertions, 28 deletions
diff --git a/doc/altusmetrum.xsl b/doc/altusmetrum.xsl index aeb43acb..329739e0 100644 --- a/doc/altusmetrum.xsl +++ b/doc/altusmetrum.xsl @@ -589,9 +589,9 @@ NAR #88757, TRA #12200 TeleMetrum version 1.1 has 2MB of on-board flash storage, enough to hold over 40 minutes of data at full data rate (100 samples/second). TeleMetrum 1.0 has 1MB of on-board - storage. As data are stored at a reduced rate during - descent, there's plenty of space to store many flights worth - of data. + storage. As data are stored at a reduced rate during descent + (10 samples/second), there's plenty of space to store many + flights worth of data. </para> <para> The on-board flash is partitioned into separate flight logs, @@ -624,6 +624,17 @@ NAR #88757, TRA #12200 flying each time while still allowing more than sufficient storage for each flight. </para> + <para> + As TeleMini does not contain an accelerometer, it stores + data at 10 samples per second during ascent and one sample + per second during descent. Each sample is a two byte reading + from the barometer. These are stored in 5kB of + on-chip flash memory which can hold 256 seconds at the + ascent rate or 2560 seconds at the descent rate. Because of + the limited storage, TeleMini cannot hold data for more than + one flight, and so must be erased after each flight or it + will not capture data for subsequent flights. + </para> </section> <section> <title>Ignite Mode</title> @@ -1156,31 +1167,6 @@ NAR #88757, TRA #12200 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> - <para> - TeleMini has 5kB of on-board storage, which is plenty for a - single flight. Make sure you download and delete the data - before a subsequent flight or it will not log any data. - </para> </section> <section> <title>Ignite Mode</title> |