Vector Calibration - Eagle Tree Systems Vector User Manual

USER GUIDE
The variometer produces a varying tone, which changes as you ascend
or descend at different rates. When ascending, the tone will be
broken into pulses, with the tone frequency and the frequency of the
pulses increasing as the rate of ascent increases.
When descending, the tone will be continuous, with the tone
frequency decreasing as your rate of descent increases.
Total energy compensation, which helps to eliminate "stick thermals,"
is done electronically, using the optional pitot airspeed sensor
(preferred) or the GPS ground speed if the pitot is not used.
The variometer is configured via the "Audio/Variometer Setup" menu, described below.
Mute Variometer: To enable the Variometer output, set this to "No."
Set Variometer Volume: Sets the volume of the acoustic variometer. Note that the purpose of the volume
control is to match the volume of the variometer with the volume of the flying sounds (if you use a
microphone), and the voice alerts.
Vario Averager Seconds: This setting controls the averaging period of the variometer, in 10ths of a second
units. For faster response, lower periods are recommended, but in rougher air longer periods may be required
to avoid false alarms.
Vario Minimum Sinkrate (Deadband): This setting controls the minimum sinkrate. Normally, this would
be set to the standard sinkrate of your model, i.e., the rate at which it descends in smooth air with no thermals.
When you descend at a rate greater than this sinkrate, the variometer will start to sound
Vario Minimum Climbrate (Deadband): This setting controls the minimum climbrate. When you ascend at
a rate greater than this climbrate, the variometer will start to sound,
Set Vario Audible Tone Gain: This setting changes the amount the variometer pitch changes as the climbrate
increases or decreases. If you are not hearing enough change, increase this parameter, and vice versa for too
much frequency change.
Total Energy Comp Percent: This adjusts the scaling of the Total Energy Compensation calculation. 100%
means that Kinetic Energy is converted into Potential Energy directly, i.e., any change in airspeed is assumed to
directly negate any change in altitude. Less than 100% reduces the degree which airspeed change affects Total
Energy, and increasing it above 100% increases the amount.
Vario Off when Motor Running: This option disables the variometer tones when the motor is running, based
on the amperage draw of the motor. This is useful for "motor
gliders." The variometer is off when motor current is more
than approximately 1.5 amps.

7.7 Vector Calibration

The Vector is factory calibrated, and normally no further
calibration is necessary. However, user calibration of some
sensors can be performed. Calibration options are located on
the "Calibration and Sensor Setup" menu.
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