LXNAV LX90xx, User Manual

Page: 36 / 151

LX90xx system Version 4.0 February 2014
Page 36 of 151
Relative filter sets a time constant of relative vertical speed filter (also known as supper
netto vertical speed). The value can be up to 20 times bigger than vario needle filter.
Default value is same as vario needle filter.
Netto time defines the integration period for the average netto vertical speed in seconds.
The default is 20 seconds.
The external switch wired to the vario unit has absolute priority and will override
all other switching methods.
6.1.4 Display
The display menu controls screen brightness. The main display unit has an ambient light
sensor which detects ambient light and automatically increases or reduces the brightness of
the screen.
If the Automatic brightness checkbox is selected, the instrument will automatically adjust
brightness according to current light conditions. Minimum and Maximum brightness
items control value limits. Use time values to setup how fast adaptation to brighter
conditions or darker conditions will occur. Default values are tuned to human eyes and do
not require change.
Night mode brightness defines maximum brightness when instrument is operating in
night mode. In night mode, brightness is reduced to very low value to reduce difference
between ambient light and device backlit.
If you want to set the brightness manually uncheck the Automatic brightness control and
set the brightness manually.
Change
Display orientation if you would like to change the display unit screen orientation.
The main display unit will restart and start with new screen orientation.
Checking
Auto brightness on vario while enable automatic regulation of brightness on
vario unit, if available. It this option is uncheck, vario unit will always run at full backlight.
It is recommended that the automatic brightness control is always enabled.
Reducing brightness will also reduce power consumption. See technical data for
more details (Chapter 2.1.9).