LXNAV LX Zeus 4.3 User Manual

LX Zeus

February 5, 2013

- 1 -

LX Zeus

LX Zeus 4.3

Users manual

(Preliminary)

Tkalska 10
SI 3000 Celje
Tel.: [phone]
Fax.: [phone]
[e-mail]
www.lxnavigation.si

LX Zeus

February 5, 2013

- 2 -

1 SYSTEM DESCRIPTION .................................................................................................................- 6 -

1.1

Hardware concept ......................................................................................................................- 6 -

1.1.1 Rotary switches and push buttons ...........................................................................................- 7 -

1.1.2 USB and SD port......................................................................................................................- 7 -

1.1.3 Connections .............................................................................................................................- 7 -

1.2

Software ......................................................................................................................................- 8 -

1.3

Technical data.............................................................................................................................- 8 -

1.4

Operation and controls ..............................................................................................................- 8 -

1.4.1 System push buttons (5) ..........................................................................................................- 9 -

1.4.2 Navigation push buttons (3) ...................................................................................................- 10 -

1.4.2.1 Custom creation of bottom rows....................................................................................- 11 -

1.4.2.2 Bottom row layout..........................................................................................................- 12 -

1.4.3 First navigation sub page .......................................................................................................- 12 -

1.4.4 Second navigation page.........................................................................................................- 13 -

1.5

Rotary switches ........................................................................................................................- 13 -

1.5.1.1 Zoom Rotary switch.......................................................................................................- 13 -

1.5.1.2 Audio volume rotary switch ...........................................................................................- 14 -

1.6

Automatic jump out of edit ......................................................................................................- 14 -

1.7

Display organisation and management .................................................................................- 14 -

1.7.1 Display organisation ...............................................................................................................- 14 -

1.7.1.1 Indicators .......................................................................................................................- 14 -

2 SETUP ............................................................................................................................................- 17 -

2.1

Pilot specific settings...............................................................................................................- 17 -

2.1.1 Pilots.......................................................................................................................................- 17 -

2.1.2 Audio settings.........................................................................................................................- 18 -

2.1.3 Voice ......................................................................................................................................- 18 -

2.1.4 Vario settings .........................................................................................................................- 19 -

2.1.5 Indicators................................................................................................................................- 22 -

2.1.6 Flarm settings.........................................................................................................................- 23 -

2.1.7 Flight recorder settings...........................................................................................................- 23 -

2.1.8 Airspace management ...........................................................................................................- 24 -

2.1.9 Wind .......................................................................................................................................- 24 -

2.1.10 Graphics (User Interface) ..................................................................................................- 24 -

2.1.10.1

Map palette ...............................................................................................................- 25 -

2.1.10.2

Map Orientation.........................................................................................................- 25 -

2.1.10.3

Task colours..............................................................................................................- 25 -

2.1.10.4

Airspaces ..................................................................................................................- 25 -

2.1.10.5

Tail settings ...............................................................................................................- 25 -

2.1.10.6

Track colour ..............................................................................................................- 25 -

2.1.10.7

Track (course) to destination colour..........................................................................- 25 -

2.1.10.8

Statistics colours .......................................................................................................- 25 -

2.1.10.9

Show TP till Zoom .....................................................................................................- 25 -

2.1.10.10 Show Flarm till Zoom ...............................................................................................- 26 -

2.1.10.11 View 3D panel ...........................................................................................................- 26 -

2.1.10.12 Auto close inactivity time out.....................................................................................- 26 -

2.1.11 Back light adjustment.........................................................................................................- 26 -

2.2

System Setup............................................................................................................................- 27 -

2.2.1 Units .......................................................................................................................................- 27 -

2.2.2 Glider (glider polar selection) .................................................................................................- 27 -

2.2.3 Data transfer ..........................................................................................................................- 27 -

2.2.3.1 Transfer of Airport data .................................................................................................- 28 -

LX Zeus

February 5, 2013

- 3 -

2.2.3.2 Transfer of Turn Point data ...........................................................................................- 28 -

2.2.3.3 Transfer of Airspace files...............................................................................................- 28 -

2.2.3.4 Transfer of Zeus config file ............................................................................................- 28 -

2.2.3.5 Transfer of Flarm net files .............................................................................................- 29 -

2.2.3.6 Transfer Maps ...............................................................................................................- 29 -

2.2.3.7 How to delete files (APT, TP, AS) .................................................................................- 29 -

2.2.4 Service ...................................................................................................................................- 29 -

2.2.5 Layout.....................................................................................................................................- 29 -

2.2.6 Locale.....................................................................................................................................- 31 -

3 NAVIGATION MODES ...................................................................................................................- 32 -

3.1

APT mode (navigation to airports) .........................................................................................- 32 -

3.2

How to select an airport? ........................................................................................................- 32 -

3.2.1 APT selection from NEAR function ........................................................................................- 33 -

3.3

Navigation in APT mode ..........................................................................................................- 34 -

3.3.1 Main graphic navigation page ................................................................................................- 34 -

3.3.2 Second navigation page.........................................................................................................- 34 -

3.3.3 Third navigation page.............................................................................................................- 35 -

3.3.4 Map orientation ......................................................................................................................- 35 -

3.4

Turn point mode .......................................................................................................................- 36 -

3.4.1 Creation of User Turn points ..................................................................................................- 36 -

3.4.1.1 Creation of a Turn point by hand ...................................................................................- 36 -

3.4.1.2 Storing of actual position during flight ...........................................................................- 37 -

3.4.2 Selection of a Turn Point........................................................................................................- 37 -

3.4.2.1 Selection from Near.......................................................................................................- 37 -

3.4.3 Navigation to a Turn Point......................................................................................................- 37 -

3.5

Task Mode .................................................................................................................................- 38 -

3.5.1 Task organisation ...................................................................................................................- 38 -

3.5.1.1 Task declaration ............................................................................................................- 38 -

3.5.2 Task selection ........................................................................................................................- 39 -

3.5.3 Task creation by “hand” .........................................................................................................- 39 -

3.5.3.1 Creation of Zones ..........................................................................................................- 40 -

3.5.4 Task Start, Restart and Next TP ............................................................................................- 40 -

3.5.4.1 Task Restart function.....................................................................................................- 41 -

3.5.4.2 Over Turn point..............................................................................................................- 41 -

3.5.5 MOVE Function (during flight)................................................................................................- 41 -

3.6

Flarm functions.........................................................................................................................- 41 -

4 AIRSPACE MANAGEMENT ..........................................................................................................- 42 -

4.1

Basic airspace settings............................................................................................................- 42 -

4.1.1 Hide airspace above ..............................................................................................................- 42 -

4.1.2 Define appearance of airspaces regarding to zoom ..............................................................- 42 -

4.1.2.1 Warnings .......................................................................................................................- 42 -

4.1.3 Disabling of airspace sections................................................................................................- 43 -

5 GPS SIGNAL MANAGEMENT ......................................................................................................- 43 -

5.1

Colibri II plug.............................................................................................................................- 43 -

5.2

Flarm plug .................................................................................................................................- 43 -

5.3

GPS signal for navigation........................................................................................................- 43 -

LX Zeus

February 5, 2013

- 4 -

5.4

Colibri II Zeus interaction ........................................................................................................- 44 -

5.4.1 Colibri II Zeus data exchange ................................................................................................- 44 -

5.5

LX Zeus and Flarm ...................................................................................................................- 44 -

5.5.1 Visualisation of Flarm objects ................................................................................................- 44 -

5.5.2 Flarm external displays ..........................................................................................................- 45 -

6 REMOTE CONTROL......................................................................................................................- 46 -

6.1

Remote in second seat ............................................................................................................- 46 -

7 SECOND SEAT UNIT ....................................................................................................................- 46 -

7.1

Connection of Vario and Remote............................................................................................- 46 -

7.1.1 Secondary Vario setup...........................................................................................................- 46 -

7.2

Interaction LX Zeus – LX Zeus Second seat..........................................................................- 47 -

8 FLYING WITH LX ZEUS ................................................................................................................- 47 -

8.1

Flight preparation on ground ..................................................................................................- 47 -

8.1.1 Before take off ........................................................................................................................- 47 -

8.1.1.1 QNH setting ...................................................................................................................- 47 -

8.1.1.2 Task declaration process ..............................................................................................- 47 -

8.2

During flight ..............................................................................................................................- 47 -

8.2.1 After take off ...........................................................................................................................- 48 -

8.2.1.1 Statistics ........................................................................................................................- 48 -

8.2.1.2 Event function activation ...............................................................................................- 48 -

8.2.1.3 Marker setting................................................................................................................- 48 -

8.2.1.4 Task Start ......................................................................................................................- 49 -

8.2.1.5 Task Restart ..................................................................................................................- 49 -

8.2.1.6 Task Finish ....................................................................................................................- 49 -

8.2.1.7 Flying AAT .....................................................................................................................- 49 -

8.2.1.8 Final glide calculation ....................................................................................................- 50 -

8.2.1.9 Thermal assistant ..........................................................................................................- 50 -

8.2.1.10

Flarm management ...................................................................................................- 50 -

8.3

After landing .............................................................................................................................- 51 -

8.3.1 Downloading of flights ............................................................................................................- 51 -

8.3.1.1 Downloading Colibri II flights .........................................................................................- 51 -

8.3.1.2 Downloading of flights recorded by Zeus ......................................................................- 51 -

8.3.1.3 Downloading of flights stored in Flarm ..........................................................................- 52 -

8.3.2 Colibri II power ON and OFF management ...........................................................................- 52 -

9 INSTALLATION..............................................................................................................................- 53 -

9.1

Mechanical installation ............................................................................................................- 53 -

9.1.1 Installation of Vario unit..........................................................................................................- 53 -

9.2

Electrical installation................................................................................................................- 53 -

9.2.1 Installation of USB D 60 (vario unit) .......................................................................................- 53 -

9.3

Installation of second seat units.............................................................................................- 55 -

9.3.1 Electrical installation...............................................................................................................- 55 -

10 EXPLANATION OF TERMS ..........................................................................................................- 56 -

10.1 Text explanations of Nav boxes..............................................................................................- 56 -

LX Zeus

February 5, 2013

- 5 -

11 ZEUS 4.3 SPECIFIC.......................................................................................................................- 57 -

LX Zeus

February 5, 2013

- 6 -

1 System description

The system consists of minimum two units one of them is gliding computer and another unit is a 57 mm
vario. As an option is available also 80 mm vario unit. Gliding computer has a sunshine readable 5.5 inch
colour display and a high power Linux running computing device. Vario unit is a stand alone unit which
electronics is based on high precision digital sensor transducers. Connection between vario and computer
unit is via LX system bus. System extensions (second seat unit, remote control, compass ….) are also
possible after using of LX system bus solution. All connections are plug and play that means no exacting
works which needs specialists.
The manual for LX Zeus and for LX Zeus 4.3 is the same as the units uses the same software. Hardware
is also nearly the same.

LX Zeus 4.3 highlights:

• layout: 82x103 mm

• graphic colour display (400x800 pixels)

• the same operation philosophy as LX Zeus

1.1 Hardware concept

The system is designed to offer flexible solutions of system configurations, so the pilot is able to provide
some kind of custom design. At the back side of the unit there are plenty of connectors which makes
possible to connect (plug and play) a bright palette of GPS signal sources, as the unit doesn’t have
integral GPS receiver. Units as Colibri, LX 20, VL and any other GPS source which is capable to deliver
NMEA at nearly any baud rate, are compatible.

A special plug is provided for Colibri II connection in that case is Colibri II also powered from Zeus. Using
of Colibri II offers some important benefits for the pilot. The benefits are:

• automatic switch on of Colibri II as Zeus becomes power

• automatic power off after Zeus will be switched off and the system isn’t in flying mode, if flight

status is detected Colibri II will go on with its own battery

• downloading of flights via Zeus USB stick

When two GPS sources are connected at the same time, both signals are combined and loosing one of
GPS source will not degrade system availability.
Colibri II is used as an IGC flight recorder in case of an IGC approved solution. In that case a high level of
communication is established between Colibri II and Zeus and the pilot is able to operate the system, the
same way as by integral Flight recorder.
The unit can operate in portrait and also in landscape orientation. Conversion from portrait and vice
versa is simple and could be done by pilot.

Note!

Pictures used in this manual may slightly

differ from the LX Zeus original screens.

LX Zeus

February 5, 2013

- 7 -

Commercially available versions:

• LX Zeus IGC: package consists of LX Zeus Computer, Colibri II flight recorder and USB D 60
vario unit

• LX Zeus Flarm: LX Zeus computer with Flarm unit and USB D 60 (IGC Flarm optionally)

• LX Zeus Flarm IGC: Zeus Computer, Flarm Colibri II and USB D

• LX Zeus: Zeus Computer and USB 60

•

1.1.1 Rotary switches and push buttons

There are 8 push buttons and two rotary switches
provided on the front of the unit. Every rotary switch
has also a push function. On one side there are five
push buttons which are all double occupied and on
the another side there are three push buttons. Short
and long press can be used. Buttons are labeled and
this makes unit manipulation very easy.
Both rotary switches are multifunctional as follows:

Default functions:

• audio volume adjustment function

• zoom selector

In edit:

• zoom: scrolling and press confirmation

• volume: bigger steps of scrolling and escape/cancel by pressing

1.1.2 USB and SD port

An A size USB port is situated on the front panel. The port is
exclusively used for data transfer and firmware updates. The
firmware updates could be easily done also by customer. SD
port is active only in case of Flarm option. This ensures direct
communication with Flarm which means downloading of flights
stored in Flarm), uploading of declaration and also Flarm
update.

1.1.3 Connections

At the back side of the unit there are following connectors:

• 4x 485 system bus*

• 2x CAN bus**

• Colibri II port (5V and data)***

• Flarm port (12 V power and data)****

• 2x Flarm display outputs

• 1x Flarm SD

• 1x OAT plug to connect OAT sensor

* 485 connects LX Zeus to:

• USB D 60 Vario unit

• Remote control stick

• secondary vario indicators

• compass

** CAN bus:

• connects Second seat unit

*** Colibri II port:

• makes possible to arrange direct connection of LX Zeus to Colibri II only via cable (special cable
necessary)

**** Flarm port can be also used to connect any GPS source which has an IGC standard connector.

LX Zeus

February 5, 2013

- 8 -

For instance: Colibri LX 20, VL… If flarm is connected, two Flarm displays can be connected to the
system after using of Displ 1 and Displ 2 plugs. SD plug connects SD card slot which is on the front panel
with Flarm.

1.2 Software

SW package is completely developed by LX Navigation and is running under Linux operation system. The
operation remained well known LX Navigation philosophy, but some new approaches have been involved.
The SW is continuously developed and upgrades are regularly published. Upgrades of SW can be easily
done by user without any passwords.

1.3 Technical data

Computer module:

• 5,5 inch sunshine readable anti glare display

• power requirements: typically 400 mA at 12 V ( may vary regarding to backlight intensity)

• layout: max 106x146 mm, installation depth 52 mm, without Flarm

• 8 push buttons

• 2 rotary switches with press function

• USB size A port

•

Computer module Zeus 4.3:

• 4.3 inch sunshine readable anti glare display

• power requirements: typically 300 mA at 12 V

• layout: max 83x136 mm, installation depth 52 mm

• 8 push buttons

• 2 rotary switches with press function

• USB size A port

•

Vario Module (USB D 60):

• 57 mm air norm (60x60 mm)

• optionally 80 mm

• mechanical needle with colour display

• power consumption: 120 mA at 12 V

485 bus compatible unit

1.4 Operation and controls

8 push buttons and two rotary switches are used as unit controls. LX Navigation Remote stick can be also
used to control the unit.

Push buttons are divided into two groups. Group of 5 buttons situated near rotary switches are meant for
system inputs. All five buttons support two functions; all depends on press, if long or short. Short press
activate above labeled function and long press (apr. 2 seconds) activates secondary function. Next 3 push
buttons are used during navigation to switch between navigation modes. Those 3 push buttons don’t
support long press.

LX Zeus

February 5, 2013

- 9 -

1.4.1 System push buttons (5)

1st button (VARIO/FLARM)

• VARIO (short press): input of MC, Ballast and Bugs

• FLARM (long press): activation of Flarm radar screen

2nd button (TSK/MOVE)

• TSK . task management, for next actions use press buttons near to the labels

• MOVE : executing of move function by AAT

3rd button (STAT/EVENT)

• STATISTICS: flight and task statistics

• EVENT: activation of Event function in Colibri II

See also part 8 (Flying with LX Zeus)

LX Zeus

February 5, 2013

- 10 -

4th button (SELECT/NEAR)

• SELECT: selection of APT, TP and TSK

• NEAR : activation of near function (Airport…)

5th button (SETUP/INFO)

• SETUP: direct access to Setup menu

• INFO. information about system

configuration

1.4.2 Navigation push buttons (3)

Three buttons are used to leaf through navigation menus of LX Zeus.

1st button (APT)

APT: after each press next mode will be selected
(APT, Turn Point, Task)

2nd button SUBP

SUBP (sub page) : after every push next page of
APT, TP or TSK menu will open.
The procedure is circular

• 1st sub page is divided into two parts. Upper
consists of NAV boxes and lower part
shows airport and TP data. After using
of 1-4 button vertical profile appears.

• 2

nd

sub page is in general 3D terrain

display

Main page

1st sub page

2nd sub page

LX Zeus

February 5, 2013

- 11 -

Note!

To select next bottom row which is

still empty simple position yellow

window to the last position (full

right) and press on 1-4 button.

3rd button (1- 4)
1-4 : LX Zeus uses bottom row for nav boxes presentation. Up to

4 variants are fully custom programmable and selectable by
1-4 push button.
Bottom row configuration is a matter of custom design,
more see in Setup Layout.
Actual bottom row variant
Is shown by a number
(1-4) which position is in the right
lover corner.

1.4.2.1 Custom creation of bottom rows

Any position can be custom designed.
The procedure starts after a long press on Zoom button.
A yellow marked window shows ready status.
Rotate Zoom to find position of interest and
Press Zoom. A list of possible nav box information
will open, select with Zoom and confirm by press.

Note!

Edit of bottom row is also possible

during flight.

LX Zeus

February 5, 2013

- 12 -

1.4.2.2 Bottom row layout

Bottom row can be positioned on the bottom of the display and as well on the top (in fact any position can
be chosen). The info row can be used as single row, double or triple row.
For more information see Setup/Layout.

Examples of bottom row layouts

1.4.3

First navigation sub page

First navigation sub page is available after press on SUBP
button and this is valid for all three navigation modes. The
page is divided into two sections. Upper section is reserved
for nav boxes. The lower part shows airport, turn point
and terrain data. Nav box creation method is the same as
described in 1.4.2.1. Turn point respectively airport
data are shown in the lower section of the display.
After press on 1-4 button turn point respectively airport
data will be replaced with graphic page which shows
glider position regarding to the terrain and the airspace.
Final glide profile for Mc 0 and actual MC is also visualized
as a cone. Task mode doesn’t show airport and turn point
data, but changes immediately into profile section after
press on SUBP. The whole task profile is available on
on the display. Use Zoom knob to adjust scale.

LX Zeus

February 5, 2013

- 13 -

1.4.4

Second navigation page

This page shows 3D terrain data regarding to
glider present position. “Tunnel” in the middle means
glider is on glide. The pilot should

1.5 Rotary switches

Both rotary switches are multifunctional, their basic functions are audio volume adjustment and zoom
adjustment. Both switches push function offer also some significant help connected with edit and
selection.

1.5.1.1

Zoom Rotary switch

Its direct function is selection of zoom factor (scale of the map)
in graphic page. After every change a new scale factor will
be selected, actual scale is shown as 1: xxxxxx and not in
kilometers resp. Nm.

1.5.1.1.1 Additionally functions of Zoom

After press has been activated the function of Zoom rotary
switch will change and the switch will become most common
used switch for LX Zeus operation during edit and selection processes.
Any input and also scrolling can be done after using of Zoom switch.

Example 1: update of MC

1. press Vario button

2. select item (MC, Bal..) by Zoom knob (rotate)

3. press on Zoom knob

4. adjust new value, rotating Zoom

Example 2: selection of an airport

1. press Select button (short press)

2. press button near APT icon (Stat)

3. selection menu will open

4. now use Zoom knob to select item of interest, you can enable filtering by Countries and also by
Name.

5. highlight airport of interest and close the procedure with press on Audio Volume button

Note!

Push on Zoom should be used after any attempt to

make inputs. After press immediate inputs are

possible when rotating the knob.

LX Zeus

February 5, 2013

- 14 -

1.5.1.2

Audio volume rotary switch

a bar will show audio volume status after rotation.

1.5.1.2.1 Additionally functions

The main secondary function of Volume rotary switch is its
press function. When pressed in edit mode will execute jump out
of the menu. The push function isn’t active in navigation
menus (APT, TP and TSK). After activation all already done edit inputs will remain, so the button isn’t a
cancel button.
During scrolling where Zoom rotary switch makes one step, using of Volume will increase steps by factor

5.
During input of numbers and letters, rotating will delete wrong input character and move cursor one
position back.

1.6 Automatic jump out of edit

If you get lost in edit simple don’t touch any command for apr. 8 seconds and the unit will change back to
the last selected menu. Time out in seconds can be set in Setup/User interface/Auto close inactivity

time out.

1.7 Display organisation and management

Additionally to geographic map there are also several extra indicators which make the display information
much more effective than a fixed predetermined solution. How to create custom design see capture
Setup/Layout. Customization of the display doesn’t need any special tools; all can be done after using of
rotary switches and push buttons.

1.7.1 Display organisation

LX Zeus display consists of following:

• geographic map

• bottom row

• indicators (header is also indicator)

1.7.1.1 Indicators

Indicators are elements of the display
which can be edit (size and position) and

LX Zeus

February 5, 2013

- 15 -

also kept visible or not visible.
See Setup/Layout for details.

Indicators are:

• header

• speed indicator

• variometer (bar)

• variometer (needle)

• wind indicator

• final glide indicator

• thermal assistant

• compass

• airspace warnings

Bottom row customization

Bottom row consists of nav boxes which
are all custom specific, that means that the pilot
is able to create his own configuration.
The procedure is extremely simple and also
executable during flight. The configuration may
differ regarding to mode of operation. The procedure
starts with long press on zoom. After long press
the first nav box becomes a frame. The frame can be
moved by rotating of zoom. As the right position is
reached, next press on zoom will open a list of available
nav boxes.

Terminate process with press on volume.
Three are four variants of bottom rows available, selectable with 1-4 push button. To create next row
simple move the frame to the last position and press 1-4 and a new row will open.
The display configuration may consist of one row two rows or three bottom rows. See Setup/Layout for
details.

Speed ind.

Vario

Final glide

Wind

Header

LX Zeus

February 5, 2013

- 16 -

Header customisation

Customisation of header should be done similar
way as by bottom row. After a long press on volume
the customisation can start. After press on zoom
a list of will open.

LX Zeus

February 5, 2013

- 17 -

2 Setup

Setup menu is available after short press on SETUP labelled push button. The menu is divided into two
sections. System settings are settings which are valid for the whole system and couldn’t be pilot specific
data. Items connected to pilot may vary from pilot to pilot and depend on pilot individual requirements.
Suitable symbols will accompanied with text will help you to find the menu of interest.

• use Zoom to find out menu of interest (selected menu size will increase)

• use push function of Zoom to enter menu

2.1 Pilot specific settings

The data stored in this part of Setup are pilot
specific data. After pilot selection during booting
the data are of individual pilot become active.

2.1.1 Pilots

Pilots name and some personal data can be stored.
All stored pilot names will be offered during booting
and selection of one pilot is mandatory. The system
offers one name called as Unknown and this
can be used as a default pilot. Further are offered
plenty Empty positions and this can be used
for pilot names input. Additionally to the name
some additional parameters can be entered.
Limiting altitude means setting of altitude limit
which will alert altitude warning.

Note!

All settings active at the moment of new pilot

creation under “Pilot” will be adopted.

LX Zeus

February 5, 2013

- 18 -

2.1.2 Audio settings

This menu defines audio configuration. Audio
generator is a part of Vario unit (USB D 60) but
settings are stored in LX Zeus.

Speed command mode:

-defines audio in SC, there are several variants
The most common used setting is Both which
means no piep,piep by positive deflections.

Speed command volume:

-defines audio volume in SC, may be increased
decreased……

Vario tone:

-defines audio in vario mode, you can adjust
frequencies and also types of audio, use Test
vario after adjustment

Alarm:

Vario unit is also capable to generate some
alarms (warnings), combining two frequencies.
Set frequencies and time intervals and use Test
to check.

2.1.3 Voice

In case that LX Voice Module is a part
of the system following settings can be arranged.

Volume:

- Voice volume: defines volume of expressed
messages

-Vario mixer: defined volume proportion Audio/Voice

LX Specific:

-enables or disables Zeus warning info

Flarm:

-enabling and disabling of Flarm info and
warnings

Use Test

vario

option to play the audio variant.

It is important to change over to SC before test;

otherwise vario audio variant will be

reproduced.

The frequencies set are also valid for SC

audio.