LXNAV V7 User Manual

V7

Digital speed to fly variometer and final glide calculator

Version 1.96

LXNAV d.o.o. • Kidričeva 24a, 3000 Celje, Slovenia • tel [phone] fax [phone]

[e-mail] • www.lxnav.com

V7 Version 1.96 Januar 2012

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1 Important Notices 5

1.1 Limited Warranty 5

2 Packing Lists 6
3 Basics 7

3.1 LXNAV V7 at a Glance 7

3.1.1 LXNAV V7 Features 7

3.1.2 Interfaces 8

3.1.3 Options 8

3.1.3.1 External Options 8

3.1.4 Technical Data 8

4 System Description 9

4.1.1 Push Button 9

4.1.1.1 Power Button 9

4.2 Rotary Switch 9

4.3 Switching on the Unit 10

4.4 User Input 10

4.4.1 Text Edit Control 10

4.4.2 “Spin” Control 11

4.4.3 Selection Control 11

4.4.4 Checkbox and Checkbox List 11

4.4.5 Slider selector 11

4.5 Switching off 12

5 Operating Modes 13

5.1 Main screen and needle 13

5.1.1 Flarm Warning 14

5.1.2 Direct link between PDA and GPS 14

5.2 Quick access menu 15

5.3 Settings Mode 15

5.3.1 Navigate 16

5.3.2 Logbook 17

5.3.3 QNH and RES 17

5.3.3.1 QNH 17

5.3.3.2 Safety Altitude 17

5.3.4 Vario Parameters 18

5.3.4.1 Vario needle filter 18

5.3.4.2 Vario sound filter 18

5.3.4.3 Smart filter 18

5.3.4.4 Vario range 18

5.3.4.5 SC tab 18

5.3.4.6 Auto SC 18

5.3.4.7 SC switch 19

5.3.4.8 Integrator time 19

5.3.4.9 Auto reset integrator 19

5.3.4.10 TE compensation 19

5.3.4.11 Temperature Offset 20

5.3.5 Sounds 20

5.3.5.1 Vario Volume 20

5.3.5.2 Vario Audio mode 21

5.3.5.3 SC Audio mode 21

5.3.5.4 Audio frequencies 21

5.3.5.5 Flarm Volume 21

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5.3.5.6 Flarm warnings 21

5.3.6 Units 21

5.3.7 Display 23

5.3.8 Communication 24

5.3.9 Polar and Glider 24

5.3.10 Flarm 25

5.3.11 Password 25

5.3.12 Reset of accelerometer (g-meter) 26

5.3.13 About 26

6 Variometer and Altimeter 27

Altimeter 27

6.1 Speed Command 27

7 Flying with the LXNAV V7 28

7.1 On the Ground 28

7.1.1 Power on Procedure 28

7.1.2 Set Elevation and QNH 28

7.1.3 28

7.1.4 Pre-flight Check 29

8 Installation 30

8.1 Installing the LXNAV V7 31

8.2 Installation of Options 32

8.2.1 Ports and Wiring 32

8.2.1.1 LXNAV V7 ports 32

8.2.1.2 LXNAV V7 wiring 34

9 Firmware Update 35

9.1 Updating LXNAV V7 firmware 35

10 Options 38

10.1 Rear Seat Device (LXNAV V7D) 38

10.1.1 Data Exchange 38

10.1.2 Available cables for GPS and PDA ports 38

10.1.3 Cable Wiring (LXNAV V7D) 38

11 Revision History 39

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1 Important Notices

The LXNAV V7 system is designed for VFR use only as an aid to prudent navigation. All
information is presented for reference only. Terrain, airports and airspace data are provided
only as an aid to situation awareness.

Information in this document is subject to change without notice. LXNAV reserves the right
to change or improve their products and to make changes in the content of this material
without obligation to notify any person or organisation of such changes or improvements.

A Yellow triangle is shown for parts of the manual which should be read carefully
and are important for operating the LXNAV V7 system.

Notes with a red triangle describe procedures that are critical and may result in
loss of data or any other critical situation.

A bulb icon is shown when a useful hint is provided to the reader.

1.1 Limited Warranty

This LXNAV V7 product is warranted to be free from defects in materials or workmanship for
two years from the date of purchase. Within this period, LXNAV will, at its sole option, repair
or replace any components that fail in normal use. Such repairs or replacement will be made
at no charge to the customer for parts andlabor, the customer shall be responsible for any
transportation cost. This warranty does not cover failures due to abuse, misuse, accident, or
unauthorised alterations or repairs.

THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE EXCLUSIVE AND IN LIEU OF
ALL OTHER WARRANTIES EXPRESSED OR IMPLIED OR STATUTORY, INCLUDING ANY
LIABILITY ARISING UNDER ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE, STATUTORY OR OTHERWISE. THIS WARRANTY GIVES YOU
SPECIFIC LEGAL RIGHTS, WHICH MAY VARY FROM STATE TO STATE.

IN NO EVENT SHALL LXNAV BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT OR
CONSEQUENTIAL DAMAGES, WHETHER RESULTING FROM THE USE, MISUSE, OR
INABILITY TO USE THIS PRODUCT OR FROM DEFECTS IN THE PRODUCT. Some states do
not allow the exclusion of incidental or consequential damages, so the above limitations may
not apply to you. LXNAV retains the exclusive right to repair or replace the unit or software,
or to offer a full refund of the purchase price, at its sole discretion. SUCH REMEDY SHALL
BE YOUR SOLE AND EXCLUSIVE REMEDY FOR ANY BREACH OF WARRANTY.

To obtain warranty service, contact your local LXNAV dealer or contact LXNAV directly.

January 2012 © 2012 LXNAV. All rights reserved.

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2 Packing Lists

 LXNAV V7 (in Metric or Imperial units as specified)
 Main power cable for V7 + CAN terminator
 Speaker
 PDA cable – generic RS232
 GPS cable – generic RS232

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3 Basics

3.1 LXNAV V7 at a Glance

LXNAV V7 is standalone digital vario meter and final glide calculator with GPS and PDA/PNA
inputs/outputs. The unit has standard dimensions to fit into a glider panel - 57 mm diameter
(2¼"). It is also able to supply PDA/PNA with power (5VDC/1A). The unit has integrated
high precision digital pressure sensors, which are sampled more than 100 times per second.
Data is indicated with needle driven with stepper motor and displayed on 320*240 pixel,
two-inch, high brightness colour display. To adjust values and settings, LXNAV V7 has one
rotary knob combined with a push button.
LXNAV V7 can be expanded through CAN bus to one or more repeaters (LXNAV V7D). Both
pilots can have equal control of all functions from front or rear seat.

3.1.1 LXNAV V7 Features

 Extremely bright 2" (5 cm) colour display readable in all sunlight conditions with the

ability to adjust the backlight .

 One rotary switch (knob) with push button function is used for input.
 Pre-loaded polar database for almost all gliders.
 GPS and PDA inputs/outputs
 Flarm Indication, if Flarm is connected to the GPS port
 Mechanical needle driven by stepper motor indicating various data such as netto

vertical speed, relative (super netto) and vertical speed.

 240x320 pixels colour screen for additional information such as average, thermal

vario, time, speed etc…

 Many custom audio settings
 100Hz sampling rate for very fast response.

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 Speed to fly indication.
 TE compensation can be selected to be either pneumatic TE probe or electronic TE.

3.1.2 Interfaces

 GPS port input/output on RS232 level (Standard IGC RJ11 connector)
 PDA port input/output on RS232 or TTL level for PNA devices (RJ45 connector)
 Audio port (Standard 3mm phono jack)
 1Mbit CAN bus for extension to V7D repeater

3.1.3 Options

3.1.3.1 External Options

By using a CAN bus system a second seat device can be connected. The unit installed in the
rear seat of the glider is independently powered and receives all necessary data from the
main unit. The communication between both units is exclusively via the CAN bus system.

3.1.4 Technical Data

 Power input 10-16 V DC
 Consumption of LXNAV V7 at 12 V:

o 120 mA - minimum brightness without audio.
o 180 mA - maximum brightness without audio.

 Consumption of LXNAV V7D at 12 V:

o 90 mA - maximum brightness without audio.

 57 mm (2¼") standard aircraft cut-out for the LXNAV V7 vario unit; length 95 mm (not

including connector).

 Weight 330 g

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4 System Description

4.1.1 Push Button

The Rotary switch also has a push button function. LXNAV V7 can detect short or long press
of push button, in most cases short press confirms action, long press cancels action or exits
from the menu Short press means just a click, long press means pushing button for more
than one second.

4.1.1.1 Power Button

The system is powered up using push button. A long press system will turn the V7 off.

4.2 Rotary Switch

The one rotary switch/knob with integrated pushbutton function can control all functions on
LXNAV V7. The rotary switch moves up or down through the menus. Variables can also be

changed using the switch. Pushing the button at the same time as rotating will step the
values in larger increments.
Example 1:
Set elevation menu; normally, values are with step 1m. If you push button in and rotate at
same time, the step will be 10m.

Example 2:
Entering password; Up/Down the numbers are changed. If you press and rotate, the cursor
will move left or right. Short press will move cursor one step right.

Rotary switch with
push button

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4.3 Switching on the Unit

A short press of the button with turn on the V7. The first LXNAV welcome screen will
appear with some system information (Device name, Version, Serial number...)

When the boot procedure is completed, setup elevation dialogue is shown.

Push button also has power ON and OFF functions.

4.4 User Input

The LXNAV V7 user interface consists of many dialogues which have different input controls.
They are designed to make input of names, parameters, etc., as easy as possible. Input
controls can be summarised as:

 Text editor
 Spin controls (Selection control)
 Checkboxes
 Slider control

To move the function from one control to another, rotate the rotary knob up or down as
follows:

 Clockwise rotation will select the next control.
 Counterclockwise rotation will select the previous control. PUSH button enters the

selected feature.

4.4.1 Text Edit Control

The Text Editor is used to input an alphanumeric string; the picture below shows typical
options when editing text. Use the knob to change the value at the current cursor position.

Push button will move cursor right. Holding push button and rotationg knob, will move
cursor left or right. At last character position, push button will confirm edited value, long
press will cancel editing and exit that control.

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4.4.2 “Spin” Control

“Spin” controls are designed for numeric parameters. Rotate the knob to increase/decrease
the selected value. Combination of push button and knob rotation will change the value with
a larger step. .

4.4.3 Selection Control

Selection boxes, also known as combo boxes are used to select a value from a list of
predefined values. Use the page selector to scroll through the list.

4.4.4 Checkbox and Checkbox List

A checkbox enables or disables a particular parameter. Press push button to toggle the
value. If an option is enabled a check mark will be shown, otherwise an empty rectangle will
be displayed.

4.4.5 Slider selector

Some values like volume and brightness are displayed as a slider

With push button you can activate slider control, then with rotation of the knob you can
select the preferred value and confirm it with the push button.

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4.5 Switching off

By pressing the push button for app. 5 seconds, LXNAV V7 will turn off.

All settings are saved in the power off procedure. We strongly recommend
switching off the unit using push button and not use a separate master switch..

If the system is powered off by a master switch changed data will not be saved.
Flight parameters at takeoff like target altitude and position will remain in stored
memory so your final glide calculations are not affected.