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LX9000 Version 2.6
5.1.3
Vario Parameters*
This option is used to set the following parameters:
On this page the following parameters are set:
Vario needle filter sets a time constant of the vario needle. The value can be adjusted
between 0.1 and 5 s with step 1.0 s or 0.1 s. Default value is 1.5 s.
Vario sound filter sets a time constant of vario sound. The value can be adjusted between
0.1 and 5 s with step 1.0 s or 0.1 s. Default value is 1.5 s.
Vario range sets full scale range of the vario (2.5 m/s, 5 m/s or 10 m/s). Default value is
5 m/s (10 kts).
SC tab defines the width of the audio dead band in speed to fly mode. Default value is
±1 m/s.
Integrator time defines the integration period for the average vario in seconds.
default is 20 seconds.
Auto SC defines the conditions when the instrument is switched automatically between
vario and speed command.
•
OFF: Switching is exclusively by an external switch connected to the vario unit.
•
GPS: When the GPS detects that the glider is circling an automatic change over to vario
will happen after approximately 10 seconds. Detection of straight flight will cause a
changeover to speed command.
•
TAS: When the TAS exceeds a pre-set value. The TAS at which switching occurs can be
selected in 5 km/h steps from 100 up to 160 km/h (or the equivalent in knots or mph).
Using Smart vario filter, vertical speed can be further filtered. Behaviour of filter is
different for types of attached variometer:
On V5 variometer smart vario filter defines how much filter is different for increasing vertical
speed versus decreasing vertical speed. (E.g.: If vario filter is set to 1s and Smart vario filter
is set to 4, then filter for increasing vario be 1s and for decreasing vario it will be 2s). This
will produce an effect like on Sage variometer.
On older models of variometer smart filter value gives us four levels of dynamic damping of
the vario.
Auto reset integrator resets the integrator to zero when the LX9000VU switches from SC
to VARIO mode. If this item is not checked the integrator will not be reset to zero (this
function is supported with LX9000VU version 2.05 or higher).
The external switch wired to the vario unit has absolute priority and will override
all other switching methods.
Page 25 of 130
September 2011
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