Flytec 4020 User Manual

Flytec AG, Ebenaustrasse 8a, CH-6048 Horw

Electronic flight instruments made in Switzerland

Flytec 4020

Operating Instructions

Operating Instructions FLYTEC 4020	1

General remarks	3
Introduction	3
Instrument overview	4
Keyboard	5
Operating philosophy	5
Run mode (normal operating mode)	5
Setting mode (for adjustments)	5
Option mode	6
Commissioning	6
The altimeter	7
General remarks	7
How does an altimeter work?	7
Altimeter 1 (ALT1)	8
Altimeter 1 setting mode	8
Altimeter 1 option mode	8
Altimeter 2 (ALT 2)	9
Altimeter 2 setting mode	10
Altimeter 2 option mode	10
Vario	11
Vario sound levels	11
Analog vario bar display	11
Digital vario display (Integrator)	11
Vario setting mode	12
Vario option mode	12
Descent tone/Descent alarm	13
Descent alarm setting mode	13
Speedometer	14
General remarks	14
Display	14
Correction	14
Speedometer setting mode	14
Option mode of the speedometer	15

Operating Instructions FLYTEC 4020	2

Time measurement and temperature display	16
Clock time (real-time clock)	16
Stopwatch (CHRONO)	16
Flying time	16
Temperature display	16
Time measurement and temperature display setting mode	17
Time measurement and temperature display option mode	17
Logbook	18
General remarks	18
Printout	18
Barograph	19
Recording	19
Time marker	19
Printout	19
Transmission to a PC	19
Barograph setting mode	20
Barograph option mode	20
APPENDIX	21
Scope of supply	21
Procedure for Official FAI Observers	21
Water damage	22
ASCII table	23
PC and printer interface	23
Function overview	23

Operating Instructions FLYTEC 4020	3

General remarks

Introduction

Flytec’s 4020 is a completely new development. The new instrument is now more compact, lighter and more economical thanks to the use of the very latest technology.

The 4020 is an instrument which you can adjust to suit your requirements. For this reason, all important data can be altered quickly and easily. You’re flying in the United States? No problem: Altimeter 1 displays the altitude in feet and Altimeter 2 displays the meters to which you are accustomed! This is just one example of what the 4020 has to offer.

With this new instrument, we have remained loyal to Flytec’s operating philosophy - and also improved it with the new option mode. Flytec’s new 4020 is an instrument that will give you immense enjoyment.

Your Flytec team

Operating Instructions FLYTEC 4020	4

3

6

2

5

4

1

8

10

7

9

Instrument overview

1.On/Off switch

2.Analog vario bar display

3.Digital vario display

4.INDICATOR display

5.TIME / SPEED / MEMO display

6.Altimeter & stopwatch display

7.Key

8.Speed sensor socket

9.PC and printer interface

10.REC switch

STARTSTOP

RESET

CLEARALT 2

Operating Instructions FLYTEC 4020	5

Keyboard

1

2

3

			0-I-II	ALT 1
	STARTSTOP			ALT 2
OPTION				CHRONO
	RESET
	CLEARALT 2			TIME
				SPEED

PRINT

MEMO

4

5

6

1START-STOP-RESET

2VARIO

3ALT1-ALT2-CHRONO

4CLEAR ALT 2

5SINK (PRINT)

6TIME / SPEED / MEMO

Operating philosophy

The philosophy behind all Flytec instruments is to keep everything as simple as possible. This is why each key has only one function, i.e. a function can be displayed and switched on or off with each key. In order to alter a function, you press and hold down the relevant function key. The setting to be changed will then flash and can be altered by pressing and .

The instrument has three operating modes: normal operating mode, setting mode and configuration mode.

Run mode (normal operating mode)

The instrument is in run mode when used in normal operation. In run mode, the instrument will display your altitude, ascent and the time continuously.

Setting mode (for adjustments)

In setting mode, the most important value can be changed for each display. For example, the altitude can be set by using the setting mode for altimeter 1.

CHRONO

ALT 2

ALT 1

CHRONO

ALT 2

ALT 1

Operating Instructions FLYTEC 4020	6

Enter setting mode for a particular display (e.g. for altimeter 1), by pressing the relevant function key (e.g. ) and holding it down for about 4 seconds. As soon as you are in setting mode, the SET indicator will appear in the INDICATOR display. The value to be changed begins to flash.

In order to return to run mode, press the relevant function key briefly (e.g. CHRONOALT 2	)
ALT 1

If no change is made in setting mode for 15 seconds, the instrument returns to run mode.

Option mode (configuration mode)

Option mode allows you to configure the instrument to your requirements and preferences. In option mode, you can set the parameters for the relevant display or function at various levels. For example, these can be units or special functions. A precise description of the various settings in option mode is given in the descriptions of the individual functions.

You can enter option mode (in the setting mode of a function) by simultaneously pressing the two keys marked “Option” in yellow (Fig. 1). If the instrument is in option mode, this is confirmed by the OPTION indicator in the INDICATOR display.

In OPTION mode you can change several parameters. By briefly pressing the relevant function key (e.g. ) you skip from one level to the next. In each level you can change one parameter of the relevant function. The level number will appear each time in the digital vario display.

If no change is made for 15 seconds in option mode, the instrument returns to run mode.

In order to return to run mode manually, press the two option keys simultaneously again (Fig. 1).

Using FlyChart 4.0 software on a PC, all settings in setting and option modes can be conveniently set and transmitted to the instrument via the PC interface.

	OPTION	STARTSTOP
		RESET
		CLEARALT 2

Figure 1

Commissioning

Switch on the instrument with the On/Off switch. On being switched on, the instrument goes through a self-test routine and then enters run mode.

Operating Instructions FLYTEC 4020	7

When switched on, the instrument settings correspond to those valid when the instrument was last switched off.

When first switched on, the instrument displays the approximate charging status of the batteries in the vario bar display. If the display shows approximately 50% of the maximum display in the green sector, the batteries are still half full. If the display is in the red sector, the batteries must be changed. If the batteries are low on charge during a flight, PO will light up briefly in the digital vario display and, at the same time, the charging status of the batteries is shown in the bar display.

The battery life of the instrument using alkaline batteries is 160 hours. Rechargeable batteries can also be used. However, operating time is substantially shorter with these (total operating time is approximately 40 - 50 hours).

Alkaline batteries can also be recharged several times using the appropriate charging unit (no fast chargers!).

The altimeter

General remarks

How does an altimeter work?

An altimeter is really a barometer because it does not measure altitude directly but pressure. The altitude is then calculated from the pressure. For the purpose of calculating absolute altitude (according to the international formula for altitude), the pressure at sea-level is assumed as being zero-point pressure.

Why does pressure change with altitude? The air pressure at a point on Earth is produced by the weight of the atmospheric air above it. This is why air pressure decreases with altitude - there is less air above your head! At 500 meters above sea-level, a pressure change of 1 mbar corresponds to a difference in altitude of about 8 meters.

In practice, however, it is not quite that simple as other factors also have an influence on air pressure. Pressure also depends on temperature and, of course, weather. On a stable day, there can be air pressure fluctuations of 1 mbar caused by temperatures and this corresponds to a difference in altitude of ± 10 meters. Depending on the weather, air pressure at sea-level (QNH) can be between 950 mbar and 1050 mbar. In order to eliminate this weather effect, an altimeter needs continual recalibration. This means that the altimeter must be set at a known altitude to display that same altitude.