+ <title>Altos Droid Flight Monitoring</title>
+ <para>
+ Altos Droid is designed to mimic the AltosUI flight monitoring
+ display, providing separate tabs for each stage of your rocket
+ flight along with a tab containing a map of the local area
+ with icons marking the current location of the altimeter and
+ the Android device.
+ </para>
+ <section>
+ <title>Pad</title>
+ <para>
+ The 'Launch Pad' tab shows information used to decide when the
+ rocket is ready for flight. The first elements include red/green
+ indicators, if any of these is red, you'll want to evaluate
+ whether the rocket is ready to launch:
+ <itemizedlist>
+ <listitem>
+ <para>
+ Battery Voltage. This indicates whether the Li-Po battery
+ powering the TeleMetrum has sufficient charge to last for
+ the duration of the flight. A value of more than
+ 3.7V is required for a 'GO' status.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ Apogee Igniter Voltage. This indicates whether the apogee
+ igniter has continuity. If the igniter has a low
+ resistance, then the voltage measured here will be close
+ to the Li-Po battery voltage. A value greater than 3.2V is
+ required for a 'GO' status.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ Main Igniter Voltage. This indicates whether the main
+ igniter has continuity. If the igniter has a low
+ resistance, then the voltage measured here will be close
+ to the Li-Po battery voltage. A value greater than 3.2V is
+ required for a 'GO' status.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ On-board Data Logging. This indicates whether there is
+ space remaining on-board to store flight data for the
+ upcoming flight. If you've downloaded data, but failed
+ to erase flights, there may not be any space
+ left. TeleMetrum can store multiple flights, depending
+ on the configured maximum flight log size. TeleMini
+ stores only a single flight, so it will need to be
+ downloaded and erased after each flight to capture
+ data. This only affects on-board flight logging; the
+ altimeter will still transmit telemetry and fire
+ ejection charges at the proper times.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ GPS Locked. For a TeleMetrum device, this indicates whether the GPS receiver is
+ currently able to compute position information. GPS requires
+ at least 4 satellites to compute an accurate position.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ GPS Ready. For a TeleMetrum device, this indicates whether GPS has reported at least
+ 10 consecutive positions without losing lock. This ensures
+ that the GPS receiver has reliable reception from the
+ satellites.
+ </para>
+ </listitem>
+ </itemizedlist>
+ <para>
+ The Launchpad tab also shows the computed launch pad position
+ and altitude, averaging many reported positions to improve the
+ accuracy of the fix.
+ </para>
+ </para>
+ </section>