Our Price:  £1,008.00(Inc. 20% VAT)(£840.00 Exc. VAT)

Brand:  LXNAV

The LXNAV S7 is a standalone digital speed-to-fly variometer and final glide calculator with GPS input and PDA/PNA input/output • Mechanical needle driven by stepper motor allows fast response and very accurate vertical speed indication • A two-inch 320x240 sunshine readable screen displays user adjustable parameters • An integrated rotary switch with push button is used to setup all the parameters • Integrated g-meter • Flarm clock screen with acoustic warning (when connected to Flarm device) • Integrated logbook • A second indicator with rotary switch and push button can be connected to S7 for double-seated aircrafts.


LXS7 Connection combinations and cable options here



  • Extremely bright 2” (5 cm) colour  display - readable in all sunlight conditions with adjustable backlight
  • Rotary switch with push button is  used to setup all the parameters
  • GPS input with two-way communication  in standard IGC form (RJ11 connector)
  • PDA input with two-way communication
    and 5V power supply for PDA(RJ45 connector)
     Integrated g-meter
  • 100Hz sampling rate for very fast  response
  • TE compensation can be selected to  use either pneumatic TE probe or electronic compensation
  • Pre-loaded polar database for almost  all gliders
  • Integrated logbook
  • Flarm clock screen with acoustic  warning when connected to FLARM device
  • Much additional information can be  displayed - such as average, thermal vario, netto, time, speed…
  • Many custom audio settings
  • Speed to fly indication
  • Several useful variometer readings
    can all be displayed on the same vario scale: Instantaneous Vario (outer red  pointer), Average Vario (red diamond), MacCready Setting (Blue arrowhead), Thermal  Average (Green “T”) making it easy to compare the achieved average and thermal  climb rates with the MacCready setting.
  • Configurable serial interfaces for  GPS and PDA up to 1Mbit
  • Direct communication between PDA and  Flight recorder (for flight declaration)



  • ARM processor Mechanical needle driven by stepper  motor
  • QVGA (320*240pixels) sunlight  readable display
  • Digital temperature compensated  pressure sensors for altitude and airspeed
  • 3 axis digital +-6g accelerometer  (optional)
  • Smooth audio output

Size and weight

  • Standard 57mm (2¼") hole
  • 61mm x 61mm x 95mm (exclusive
  • Weight: ~330g

Colour display

  • 16 bit colour display
  • 2” (5cm) screen
  • 320 by 240 pixel resolution

Input and output

  • GPS port input/output on RS232 level  (standard IGC 6 pin connector RJ11)
  • PDA port input/output on RS232 or TTL  level for PDA/PNA devices with 5V power supply (8 pin RJ 45, 5V output max 2A)
  • audio output
  • 1Mbit CANbus for connection to S7D  repeater
  • Speed command and Vario priority  input
  • Flarm warning indication
  • Rotary knob with push function

Power supply

  • Power input 10-16 V DC
  • Consumption of LXNAV S7 at 12 V: 120 mA - minimum brightness without
     180 mA - maximum brightness without  audio.
  • Consumption of LXNAV S7D at 12 V: 90mA - maximum brightness

Optional accessories

  • LXNAV S7D rear seat device
  • LXNAV Nano
  • Oudie

S7 Two seat setup


The S7 has a rear seat repeater (S7D). The second unit is more than just a repeater display; it has all of the same functionality as the main unit. Front and back units are connected together with a CAN Bus cable carrying both data and power. One of the great features of the S7 is its connectivity for a PDA or Oudie including power and data from the main unit. You can also drive a second rear seat PDA or Oudie using a CAN2PDA box. This small box connects into the CAN Bus between the front and rear S7D and provides data and power to the second PDA or Oudie. Parameter changes from PDA to and from the S7 vario are possible such as MacCready, QNH etc.

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