LXNAV S10 Series, Руководство пользователя

Страница: 47 / 121

Rev #37
Version 8.0 April 2021
Page 47 of 121
5.7.3.7 Needle Range
Needle range sets the 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).
5.7.3.8 Auto SC (Speed Command)
Auto SC defines the conditions when the instrument (needle) will switch automatically
between vario and speed to fly mode. It is just a needle mode.
•
OFF : Switching exclusively by means of an external switch connected to the S8x/S10x.
With new versions of Remote sticks there is no longer a "physical" switch connection
between the Remote stick and the Vario unit – it is a switch on the Remote stick which is
connected through the RS485 bus.
•
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
change to speed command.
•
IAS : When the IAS exceeds a pre-set value. The IAS 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).
•
G-meter – for switching between cruise and climb mode based on the G measured by
the inertial system. When glider starts circling the S8x/S10x will automatically switch
from cruise to climb mode.
The external switch wired to the LXNAV S8x/S10x has absolute priority and will
override all other switching methods. VP (Vario priority) input can also override a
hard-wired SC switch.
To configure navboxes in SC mode on the ground you must first turn Auto SC off,
configure your navboxes and then set Auto SC back to your preferred setting.
5.7.3.8.1 External SC switch not installed
If you do not have an external SC switch or Flap switch, you must do this manually.
The procedure is as follows:
•
Go below the hardware input settings
•
Assign one of the inputs as a "SC switch"
You have two SC switch states, red and green. One of them will switch the unit to
cruise mode and you can change the values on each page.
When done, change the input back to the default and enable SC switch to GPS
mode.
5.7.3.9 TE Compensation
The LXNAV S8x/S10x offers two methods of vario Total Energy Compensation:
•
Pneumatic TE Pitot tube
•
Electronic TE compensation
It is important to note that the method of TE compensation is defined when the
instrument is installed by virtue of the pneumatic connections made to the TE and
static ports. Changing the compensation type in the setup mode below WILL NOT
change the method of compensation – the pneumatic plumbing must be changed
first.