--- /dev/null
+ifdef::altusmetrum[]
+
+ ==== Main Deploy Altitude
+
+ This sets the altitude (above the recorded pad
+ altitude) at which the 'main' igniter will fire. The
+ drop-down menu shows some common values, but you can
+ edit the text directly and choose whatever you
+ like. If the apogee charge fires below this altitude,
+ then the main charge will fire two seconds after the
+ apogee charge fires.
+
+ ==== Apogee Delay
+
+ When flying redundant electronics, it's often
+ important to ensure that multiple apogee charges don't
+ fire at precisely the same time, as that can over
+ pressurize the apogee deployment bay and cause a
+ structural failure of the air-frame. The Apogee Delay
+ parameter tells the flight computer to fire the apogee
+ charge a certain number of seconds after apogee has
+ been detected.
+
+ ==== Apogee Lockout
+
+ Apogee lockout is the number of seconds after boost
+ where the flight computer will not fire the apogee
+ charge, even if the rocket appears to be at
+ apogee. This is often called 'Mach Delay', as it is
+ intended to prevent a flight computer from
+ unintentionally firing apogee charges due to the
+ pressure spike that occurrs across a mach
+ transition. Altus Metrum flight computers include a
+ Kalman filter which is not fooled by this sharp
+ pressure increase, and so this setting should be left
+ at the default value of zero to disable it.
+
+endif::altusmetrum[]
+
+==== Frequency
+
+ This configures which of the frequencies to use for
+ both telemetry and packet command mode. Note that if
+ you set this value via packet command mode, the
+ TeleDongle frequency will also be automatically
+ reconfigured to match so that communication will
+ continue afterwards.
+
+==== RF Calibration
+
+ The radios in every Altus Metrum device are calibrated
+ at the factory to ensure that they transmit and
+ receive on the specified frequency. If you need to
+ you can adjust the calibration by changing this value.
+ Do not do this without understanding what the value
+ means, read the appendix on calibration and/or the
+ source code for more information. To change a
+ TeleDongle's calibration, you must reprogram the unit
+ completely.
+
+==== Telemetry/RDF/APRS Enable
+
+ Enables the radio for transmission during
+ flight. When disabled, the radio will not
+ transmit anything during flight at all.
+
+==== Telemetry baud rate
+
+ This sets the modulation bit rate for data
+ transmission for both telemetry and packet
+ link mode. Lower bit rates will increase range
+ while reducing the amount of data that can be
+ sent and increasing battery consumption. All
+ telemetry is done using a rate 1/2 constraint
+ 4 convolution code, so the actual data
+ transmission rate is 1/2 of the modulation bit
+ rate specified here.
+
+==== APRS Interval
+
+ How often to transmit GPS information via APRS
+ (in seconds). When set to zero, APRS
+ transmission is disabled.
+ ifdef::altusmetrum[]
+ This option is
+ available on TeleMetrum v2 and TeleMega
+ boards. TeleMetrum v1 boards cannot transmit
+ APRS packets.
+ endif::altusmetrum[]
+ Note that a single APRS packet
+ takes nearly a full second to transmit, so
+ enabling this option will prevent sending any
+ other telemetry during that time.
+
+==== APRS SSID
+
+ Which SSID to report in APRS packets. By
+ default, this is set to the last digit of the
+ serial number, but can be configured to any
+ value from 0 to 9.
+
+==== APRS Format
+
+ Whether to send APRS data in Compressed or
+ Uncompressed format. Compressed format is
+ smaller and more precise. Uncompressed
+ format is older, but may work better with your
+ device. The Kenwood TH-D72 only displays
+ altitude information with Uncompressed
+ format, while the Yaesu FT1D only displays
+ altitude with Compressed format. Test before
+ you fly to see which to use.
+
+==== Callsign
+
+ This sets the call sign included in each
+ telemetry packet. Set this as needed to
+ conform to your local radio regulations.
+
+ifdef::altusmetrum[]
+
+ ==== Maximum Flight Log Size
+
+ 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.
+
+ ==== Ignitor Firing Mode
+
+ This configuration parameter allows the two standard ignitor
+ channels (Apogee and Main) to be used in different
+ configurations.
+
+ Dual Deploy::
+ This is the usual mode of operation; the
+ 'apogee' channel is fired at apogee and the
+ 'main' channel at the height above ground
+ specified by the 'Main Deploy Altitude' during
+ descent.
+
+ Redundant Apogee::
+ This fires both channels at apogee, the
+ 'apogee' channel first followed after a two
+ second delay by the 'main' channel.
+
+ Redundant Main::
+ This fires both channels at the height above
+ ground specified by the Main Deploy Altitude
+ setting during descent. The 'apogee' channel
+ is fired first, followed after a two second
+ delay by the 'main' channel.
+
+ ==== Pad Orientation
+
+ Because they include accelerometers,
+ TeleMetrum, TeleMega and EasyMega are
+ sensitive to the orientation of the board. By
+ default, they expect the antenna end to point
+ forward. This parameter allows that default to
+ be changed, permitting the board to be mounted
+ with the antenna pointing aft instead.
+
+ Antenna Up::
+ In this mode, the antenna end of the flight
+ computer must point forward, in line with the
+ expected flight path.
+
+ Antenna Down::
+ In this mode, the antenna end of the flight
+ computer must point aft, in line with the
+ expected flight path.
+
+ ==== Beeper Frequency
+
+ The beeper on all Altus Metrum flight
+ computers works best at 4000Hz, however if you
+ have more than one flight computer in a single
+ airframe, having all of them sound at the same
+ frequency can be confusing. This parameter
+ lets you adjust the base beeper frequency
+ value.
+
+endif::altusmetrum[]
+
+==== Logging Trigger Motion
+
+ This sets the amount of motion that TeleGPS
+ needs to see before logging the new
+ position. Motions smaller than this are
+ skipped, which saves storage space.
+
+==== Position Reporting Interval
+
+ The interval between TeleGPS position reports,
+ both over the air and in the log. Increase
+ this to reduce the frequency of radio
+ transmissions and the length of time available
+ in the log.
+
+
+ifdef::altusmetrum[]
+
+ ==== Configure Pyro Channels
+
+ .Additional Pyro Channel Configuration
+ image::configure-pyro.png[width="5.5in"]
+
+ This opens a separate window to configure the
+ additional pyro channels available on TeleMega
+ and EasyMega. One column is presented for
+ each channel. Each row represents a single
+ parameter, if enabled the parameter must meet
+ the specified test for the pyro channel to be
+ fired.
+
+ Select conditions and set the related value;
+ the pyro channel will be activated when *all*
+ of the conditions are met. Each pyro channel
+ has a separate set of configuration values, so
+ you can use different values for the same
+ condition with different channels.
+
+ At the bottom of the window, the 'Pyro Firing
+ Time' configuration sets the length of time
+ (in seconds) which each of these pyro channels
+ will fire for.
+
+ Once you have selected the appropriate
+ configuration for all of the necessary pyro
+ channels, you can save the pyro configuration
+ along with the rest of the flight computer
+ configuration by pressing the 'Save' button in
+ the main Configure Flight Computer window.
+
+ include::pyro-channels.raw[]
+
+endif::altusmetrum[]
projects / fw / altos / blobdiff