CN CNi  
 

 

CAI

CNv - Club Software - Version 2.0.1194
On-Line Manual - Beta Release
ClearNav CNv Screen Navigation
rotating image
CNV

At startup, the CNv will display the CNv splash screen and will complete self diagnostics - displaying status screens in rotation - displaying the cruise/climb screen when completed.

All CNv screens and functions are accessed using two rotary encoders.

Red

Upper Encoder

  • Navigates left/right to desired screen.
  • Normal rotation scrolls through all screens sequentially.
  • A quick CCW spin always displays the Cruise/Climb screen.
  • A quick CW spin always displays the Settings Screen.
Green

Lower Encoder

  • Controls vario volume in Cruise/Climb Screen.
  • Changes Flight parameters (MC, Bugs, Audio Volume, etc.).
  • Supports Setup parameters (Glider Model, Weight, Constants, etc.).
  • Selects Display Screen Set (Flight, Settings, or Info).
  • The CNv screens will display values (imperial, nautical, metric) selected using the PC CNvUtility application.
  • Knots, miles and feet are used for the examples following.
  • Left Mouse Click (LMC) on the desired screen in the scrolling windows below to see detailed screen usage instructions.

FLIGHT SCREENS

CLIMB
CRUISE
MC
HOME
WINDS
BALLAST
BUGS
ALT
P-ALT
SPEEDS
FLIGHT SCREENS
 
SETTINGS SCREENS
POINTER CONSTANT
AUDIO CONSTANT
CRUISE RESPONSE
POLAR SELECT
DRY WEIGHT
TE SOURCE
TE SOURCE
PROBE TE COMP
ELECTRONIC TE COMP
VOLUME
BACKLIGHT
ZERO POINTER
UTC
SETTINGS SCREEN
INFO SCREENS
INFO SCREENS
LAT/LON SELECT
GPS STATUS
SENSOR READINGS
POINTER TEST
SPLASH SCREEN
Detailed Screen Review

Climb Screen

20 Second Climb Average - The top row displays the average climb rate for the last 1,2 .. 20 seconds. Updates every second. Non Adjustable.

Total Climb Average - The lower row shows the average climb rate for the total climb duration. Updates every second. Max duration is one hour.

Both values are reset to zero when the manual cruise/climb switch is cycled.

When automatic C/C switching is in use the screen typically switches to Climb at about 45 degrees or one eighth of a turn.  The two averagers and the timers however are reset after the first few degrees of any turn so that if/when the vario goes into climb mode the averages (and the timers) display values from the first point at which turning was detected.  This allows the pilot to make a faster and more accurate assessment of the lift quality.

Cruise Screen

The Netto value is the calculated vertical speed of the airmass based on the last 1 – n seconds of cruise flight where n = cruise time constant . The timer shows the actual duration from the start of the current glide.

The STF is calculated based on selected flight parameters (polar, ballast, bugs, MC, vertical airmass motion).

Each chevron corresponds to a five knot difference between the indicated airspeed and the speed-to-fly.

MacCready Screen

The MC Value is adjusted using the lower encoder.

The STF is calculated using the MC setting, ship polar, dry weight, ballast, and bug % entered by the pilot. This is the STF in neutral air.

NAVIGATE HOME Screen

The coordinates for HOME and the elevation of the home field  must be entered using the configuration utility.

In this example, the glider has to turn right ~ 90 degrees to get home. but is 427 below the altitude required to arrive with zero margin.

Winds Screen

The solid black arrow shows the direction of the wind relative to the ground track.

For small crab angles, the ground track and glider heading are roughly equal.

Tail wind is displayed on the left side of the screen - a tail wind of two knots is depicted.

The wind strength is 8 kts and is blowing from 352 degrees.

H2O

Ballast Screen

Ballast may be litres or US gallons.

For US gallons the AUW of the ballasted glider is computed and displayed in lbs.

For litres the AUW of the ballasted glider is computed and displayed in kg.

AUW = Dry Weight + Ballast

BUGS

Bugs / Clean Screen

Estimated bug coverage is adjusted using the lower encoder.

100% = no bugs.

The impact on L/D is displayed for reference

PALT

ALT/ GPS Screen

The altimeter setting can be adjusted using the lower encoder.

Pressure Altitude and Fight Recorder Altitude


PALT is pressure altitude measured at the glider static source  referenced to the 1013.2 msl datum.

SFR altitude is pressure altitude measured at the cockpit pressure referenced to the 1013.2 msl datum.

IAS

SPEEDS - IAS/TAS/GPS Screen

Display Only.

Flight Screens

This is the last screen in the Flight Screens display.

Other screen sets are selected using the lower encoder.

Settings Screens

This is the entry screen for the Settings Screens.

Pointer

Pointer Time Constant

Pointer Time Constant is adjusted using the lower encoder. 2.5 seconds is the default.

Pointer and Audio time constants are independently adjustable.

Audio

Audio Time Constant

Audio Time Constant is adjusted using the lower encoder. 2.5 seconds is the default.

Pointer and Audio time constants are independently adjustable.

Cruise Respone

This time constant controls the behavior of the STF chevrons and the netto (or relative netto) averages on the display.

Polar

Polar

A representative set of polars is available.

Polar (glider) is selectable using the lower encoder.

Any new polar may be defined using the configuration utility.

Dry

Dry Weight

'Dry Weight' of the ship can be adjusted using the lower encoder.

Dry weight is the manufacturer's weight of the empty ship + instruments + pilot + chute + all other baggage. i.e. the actual weight of the ship with you in it - sitting on the takeoff grid - not including ballast.

OR

TE Source

TE Probe or Electronic TE is selected using this screen set.

The lower right encoder toggles between two screen options:

1/ Use TE probe

2/ No TE probe

The option selected here determines which TE compensation adjustment screen (following) will be displayed.

TE Probe Compensation

This screen appears next with a CW turn of the upper encoder if the 'Use TE probe' option is selected above.

TE Electronic Compensation

This screen appears next with a CW turn of the upper encoder if the 'No TE probe' option is selected above.

VOL

Volume

Audio Level (volume) is adjusted using the lower encoder.

The Lower Right encoder always functions as a volume control on the Cruise/Climb Screen.

Backlight

Backlight

Backlight brightness level is adjusted using the lower encoder.

Pilot can adjust the CNv screen backlight from from 0 - 100%.

Zero

Meter Zero

The pointer zero position can be adjusted using the lower encoder.

This feature allows compensation for any drifting in the mechanical pointer drive components.

Note: The pointer should be set to zero ONLY on this screen.

UTC

The LR encoder is used to enter the UTC offset required for a correct local time display.

Settings Screens

This is the last screen in the Settings Screens display.

Other Screen Sets are selected using the lower encoder.

Info Screens

This is the entry point for the Info Screens.

 

Location/ Date/Time

Display Only.

GPS Status

Display Only.

Sensor Readings

Display Only.

Pointer Test

Selection Immediately initiates pointer test.

The pointer will step from 0 to 2, 4, 6, 8, 10, 12, 14,16 (kts) or 0, 1, 2, 3, 4, 5, 6, 7, 8 (m/s) then will return stepwise to zero and continue to -10 kts (-5 m/s)

CNv Splash Screen

Display Only.

 

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