TL Electronic TL-3524 User manual

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TL-3524
USER`S MANUAL
TL elektronic
Airport, Building 125, Hradec Kralove
503 41, Czech Republic
TL
© Copyright 2003, TL elektronic Non TSO approved

© Copyright 2003-2006
TL elektronic
All Rights Reserved
Except as expressly provided below, no part of this manual may be downloaded, transmitted, copied,
reproduced, disseminated or stored in any storage medium, for any purpose without the express prior
written consent of the TL elektronic company.Address your questions about the technical information
to TL elektronic. Other information about sale, distribution should be directed to our exclusive
distributors (see World Distributor list on our website).
Producer‘s address:
TL elektronic Inc.
Airport, Building 125,
503 41 Hradec Kralove, Czech Republic
Fax: [phone] E-mail: [email protected]
Website Address: www.tl-elektronic.com
Please, send your e-mail address to [email protected] to receive the latest
information about software upgrade.
Send your ideas to [e-mail].
We will evaluate your suggestion and provide an update.
Record of revision
Revision Revision Description ECO# Insertion By
date date
A 1/6/03 Initial Release ---
B 1/7/04 Language correction 0001
Windows is registered trademark of Microsoft Corporation.
All trademarks and registered trademarks are acknowledged.
SchecK® is registered trademark of TL elektronic.
iFamily® is registered trademark of TL elektronic.
sModern® is registered trademark of TL elektronic.
All information in this User's manual is subject to change without prior notice.
Page i TL-3524 USER`S MANUAL
Rev. B P/N 03-3524-2003

Page ii TL-3524 USER`S MANUAL
Rev. B P/N 03-3524-2003
TABLE OF CONTENTS
1. GENERAL DESCRIPTION
1.1. Introduction........................................................................................... 1-1
1.2. Instrument Description........................................................................... 1-1
1.3. Technical Specifications............................................................................... 1-2
1.4. Limited Conditions...................................................................................... 1-3
1.5. Limited Warranty......................................................................................... 1-3
1.6. Limited Operation........................................................................................ 1-3
2. INSTALLATION
2.1. Introduction............................................................................................... 2-1
2.2. Rack Consideration.................................................................................... 2-1
2.3. Installation into Panel.................................................................................. 2-1
2.4. Static Pressure Connection........................................................................... 2-1
2.5. Instrument Dimensions................................................................................. 2-2
3. SYSTEM INTERCONNECT
3.1. Pin Function List........................................................................................ 3-1
3.2. TL-3524 Interconnects................................................................................ 3-2
3.3. TL-3524 Connector Location........................................................................ 3-3
4. NAV-MENU DESCRIPTION
4.1. How to Control Instrument via NAV-MENU.................................................. 4-1
5. INSTRUMENT SETUP
5.1. First Instrument Turn-on................................................................................ 4-1
5.2. Main Set-up Functions Description................................................................. 5-1
5.3. How to Select Altitude Units..........................................................................5-2
5.4. How to Select Barometric Pressure Units.......................................................5-2
5.5. Show Altitude in 1 or 10 Unit Resolution.........................................................5-2
5.6. How to Select Default Transition Altitude....................................................... 5-2
5.7. Go to Calibration........................................................................................... 5-3
5.8. Restore Factory Calibration........................................................................... 5-3
5.9. Do Your Calibration.......................................................................................5-3
5.10. Strobe Signal of Transponder........................................................................5-4
5.11. Oxygen Warning..........................................................................................5-4
5.12. User Button................................................................................................ 5-4
5.13. iFamily® and Other Connecting Devices.......................................................5-4
6. OPERATION MANUAL
6.1. Left Menu Description................................................................................. 6-1
6.2. Right Menu Description.................................................................................6-2
6.3. How to Change Configuration........................................................................6-3
6.4. Set Alert Warning......................................................................................... 6-3
6.5. How Alert Warning Works............................................................................ 6-3
6.6. Set MDA or Approach Altitude..................................................................... 6-4
6.7. MDA or Approach Warning.......................................................................... 6-4
6.8. Set Different Transition Altitude.....................................................................6-4
6.9. „TRANSITION ALTITUDE REACHED“ Message...................................... 6-4
6.10. Memory of Maximum Reached Altitude....................................................... 6-5
6.11. Delete Long-term Memory of Altitude.......................................................... 6-5
6.12. „OXYGEN“ Message................................................................................. 6-5
6.13. Measuring Altitude out of Range.................................................................. 6-5
7. SchecK DESCRIPTION
7.1. Method of SchecK® for Storing into Memory................................................. 7-1
8. Transponder Connection
8.1. Table of Transponder Connection................................................................... 8-1

Page 1-1 TL-3524 USER`S MANUAL
Rev. B P/N 03-3524-2003
1. GENERAL DESCRIPTION
1.1. INTRODUCTION
This manual describes the physical, mechanical and electrical features and functions of the TL-3524
Altimeter.
1.2. INSTRUMENT DESCRIPTION
The Altimeter incorporates the new generation of a precise sensor with the temperature and altitude
calibration, which enables measuring the altitude immediately after turning the instrument on, without having
to wait a few minutes. Another part of the Altimeter is an encoder of the altitude for any transponder, see
the table, page 8-1.
The TL-3524 incorporates a 10.000 line long-term memory and SchecK memory (see page 7-1) for
storing the measured values at 0.1 to 60 second sample rate.
The TL-3524 enables the pilot to keep the set altitude. In case of exceeding the set altitude, the pilot will
be warned by the acoustic or visual signalization. It is also possible to set the MDA, the approach altitude
and the transition altitude. When reaching the transition altitude, a message will show on the display.
If the alarm warning has be activated either by the lack of oxygen or by high altitude, the instrument will
display a Service message after the next turn-on to inform the user that the altitude has been exceeded.
The User button can be programmed in the main set-up for the quick display of the maximum reached
altitude or for the display of the currently set barometric pressure.
It is possible to download the measured values from the instrument via the serial cable RS-232c into your
PC.
1.3. TECHNICAL SPECIFICATIONS
The producer guarantees all stated technical parameters only when the instrument is installed by an
authorized service or an aircraft manufacturer.
1.3.1 Physical characteristics
Width 71mm (3.346 inches)
Height 67mm (3.346 inches)
Depth 92mm (3.6220 inches) including connectors with cover
Panel hole 57mm (3.149 inches) diameter
TL-3524 Weight 0.30 kg (0.66 lbs)
TL-3524 Harness 0.05 kg (0.11 lbs)

Page 1-2 TL-3524 USER`S MANUAL
Rev. B P/N 03-3524-2003
1.3.2 General Specifications
Operating Temperature Range -20°C to +70°C
Humidity 95% non-condensing
Altitude Range 4600 meters max.
Power Range 10.0 to 32.0 Volts
Max. Signalization 30 Volts, 1 Ampere
Power Consumption 0.15 Ampere @ 14 VDC
Backlight Consumption 0.08 Ampere max when ext. power is used
Vibration 5 to 500 Hz
Show Rate (LCD Refresh) 1 second
1.3.3 Long-term Memory and Communication
Storing Rate 1 to 60 seconds user selectable
Memory Capacity Scheck® method
Stored Values Altitude
Data Saved Endurance 30 years
Rolling Memory life-time 550 000 hours @ 1 second storing rate
Communication RS-232c
Communication Speed 38400 bps
1.3.4 Encoder
Type of encoder Mode C
Strobe signal from Positive pulse 10 to 32 Volts
the transponder (if positive pulse is applied, the output
encoding data is enabled)
1.3.5 Instrument Measured Range / Resolution
Altitude&encoder -350m to 9700m @ 1013,25 mbar / 1m
(-1150ft to 31.950ft @ 29.92inHg / 2ft)

Page 1-3 TL-3524 USER`S MANUAL
Rev. B P/N 03-3524-2003
1.4. LIMITED CONDITIONS
1.5. LIMITED WARRANTY
The TL elektronic company warrants this product to be free from defects in materials and manufacture for
three years from the date of purchase. TL elektronic 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 or labour. The customer is, however, responsible for any transportation costs. This warranty does
not cover failures due to abuse, misuse, accident or unauthorized alteration or repairs.
THE WARRANTIESAND REMEDIES CONTAINED HEREIN ARE EXCLUSIVE AND IN LIEU
OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED OR STATUTORY, INCLUDING ANY
LIABILITYARISING UNDER ANY WARRANTY OF ENCHANT ABILITY 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 TL ELEKTRONIC 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 NOTALLOW THE EXCLUSION OF INCIDENTAL OR CONSEQUENTIAL
DAMAGES, SO THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU.
To obtain warranty service, call the TL elektronic Customer Service ([phone]) for a returned
merchandise tracking number. The unit should be securely packaged with the tracking number clearly
marked on the outside of the package and sent freight prepaid and insured to a TL elektronic warranty
service station. A copy of the original sales receipt is required as the proof of purchase for warranty
repairs. TL elektronic retains the exclusive right to repair or replace the unit or software or 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.
This product is not TSO approved as a flight instrument, therefore, the manufacturer
will not be held responsible for any damage caused by its use.
The encoder output is only a complement of the Altimeter; therefore, the manufacturer is
responsible neither for using this output, nor for any possible legal consequences resulting
from its use.
1.6. LIMITED OPERATION

Page 2-1 TL-3524 USER`S MANUAL
Rev. B P/N 03-3524-2003
2. INSTALLATION
2.1 INTRODUCTION
Careful planning and consideration of the suggestions in this section are required to achieve the
desired performance and reliability from the TL-3524.
2.2 RACK CONSIDERATION
Plan a location that gives the pilot complete and comfortable access to the entire keypad and that is plainly
visible from the pilot's perspective. Check that there is adequate depth for the rack in the instrument panel.
A location away from heating vents or other sources of heat generation is optimal.
2.3 INSTALLATION INTO PANEL
Connect the cables into the connector and use the connector cover.
Secure the incoming leads to prevent their effect on the connector
in the vertical direction.
Connect the static pressure hose into the fitting. Secure the incoming leads
to prevent their effect on the hose in the vertical and horizontal direction.
2.4 STATIC PRESSURE CONNECTION
The TL-3524 is calibrated in the factory to the pressure datum according to the National
Bureau of Standards. When the TL-3524 has been installed in the aircraft it must be
calibrated to the primary flight altimeter according to Advisory Circular 43-6A so as to
comply with FAR91.36(b) and FAR 91.172 (see the calibration procedure, page 5-9).

Mounting Rack DimensionMounting Rack Dimension
Figure 4. Rack DimensionFigure 4. Rack Dimension
TL-3524 USER'S MANUAL P/N 03-3524-2003
M3.5 (0.137) 4xM3.5 (0.137) 4x
++
++
++
++
50 (1.968)50 (1.968)
2 (.007)2 (.007) 40 (1.574)40 (1.574)
67 (2.637)67 (2.637)
71 (2.795)71 (2.795)
57 (2.244)57 (2.244)
23.5 (0.925)23.5 (0.925) 23.5 (0.925)23.5 (0.925)
57 (2.244)57 (2.244)
NOTES: 1. Dimension: mm (INCH) 2. Unit weight: 0.3 kg (0.66 lbs) 3. Mounting Rack & Hardware
weight: 0.05 kg (0.11 lbs)
NOTES: 1. Dimension: mm (INCH) 2. Unit weight: 0.3 kg (0.66 lbs) 3. Mounting Rack & Hardware
weight: 0.05 kg (0.11 lbs)
elektronicelektronic
TL-3524TL-3524
TTLL
ALTIMETERALTIMETER
encoder
Page 2-2 Rev. A Page 2-2 Rev. A
67 (2.637)67 (2.637)
23.5 (0.925)23.5 (0.925)
23.5 (0.925)23.5 (0.925)

Pin Pin Name I/O
1 Transponder -A1 Out
2 Transponder - A2 Out
3 Transponder - STROBE signal In
4 Ground for transponder - -
5 Transponder - A4 Out
6 Transponder - B1 Out
7 Aircraft power In
8 Aircraft ground - -
9 Transponder - B2 Out
10 Transponder - B4 Out
11 Input for backlight In
12 Internal source for backlight Out
13 Transponder - C1 Out
14 Transponder - C2 Out
15 Input for User button In
16 Ground for User button input - -
17 Transponder - C4 Out
18 Do not connect! - reserved for transponder - D4 Out
19 iFamily® communication ISCL I/O
20 iFamily® communication ISDA I/O
21 Signalization unit Out
22 Ground for PC communication (RS-232) - -
23 RXD from PC (RS-232) In
24 TXD to PC (RS-232) Out
Page 3-1 TL-3524 USER`S MANUAL
Rev. B P/N 03-3524-2003
3.1 PIN FUNCTION LIST

P3501
1A
1A
15 16 21 7 8
USER BUTTON
GROUND FOR USER BUTTON
10-32V AIRCRAFT POWER
AICRAFT GROUND
SIGNALIZATION UNIT
QUICK PROGRAMMED
USER BUTTON FUSE
FUSE
AIRCRAFT POWER
(Note. 1)
TL-3524
ALTIMETER & ENCODER
DISPLAY BACKLIGHT DISPLAY BACKLIGHT
Transponder
Unit
Sign.
unit
1 2 5 6 9 10 13 14 17 3 4
ALITIUDE OUTPUT - A1 ALITIUDE OUTPUT - A2 ALITIUDE OUTPUT - A4 ALITIUDE OUTPUT - B1 ALITIUDE OUTPUT - B2 ALITIUDE OUTPUT - B4
ALITIUDE OUTPUT - C1 ALITIUDE OUTPUT - C2 ALITIUDE OUTPUT - C4
STROBE SIGNAL
GROUND
Accessories Interconnect
TL-3524 USER'S MANUAL P/N 03-3524-2003
Figure 5. Accessories interconnect
A1 A2 A4 B1 B2 B4 C1 C2 C4 STROBE GND
11 12 24 23 22 19 20
RS 232 RX
IFAMILY® ISCL
ISDA
RS 232 TX
GROUND
IFAMILY®
(Note. 2)
D-SUB 9 pins (female) for communication with a PC
ISDA
54 3 21
67 8 9
ISCL
Page 3-2 Rev. B
NOTES: 1. Signalization is connected to the aircraft ground
when active.
2. Jumper for the backlight. For the backlight control
install a resistor between the pins 11 and 12.
3. Use the shade cable only and connect it according
to the connection scheme delivered with the sensor.
Connect other TL elektronic instruments via the iFamily® Bus

Rear view of connector plate
Figure 6. Connectors locate
TL-3524 USER'S MANUAL P/N 03-3524-2003
P3501 NOTES:
1. Secure the incoming leads to prevent
their effect on the connector in the vertical direction.
2. Secure the incoming hose to prevent
their effect on the fitting in the vertical and horizontal direction.
1
24
Static pressure
Page 3-3 Rev. A

Page 4-1 TL-3524 USER`S MANUAL
Rev. B P/N 03-3524-2003
4. NAV-MENU DESCRITION
4.1 How to Control Instrument via NAV-MENU
There are black labels on the display. Each is affiliated to the left and the right button. Before pressing a
button, read the information on the label. Its functions are different in every menu.
The left label is for the Left button. The right label is for the Right button.
To store a value into the memory, press both buttons
simultaneously. Release the buttons when the setting arrows
vanish.
?
250
ALT m
MENU FL 1013
elektronic
ALTITUDE encoder
OK
elektronic
FIRST SETUP
MUST BE COMPLETE
BEFORE FIRST USE
ALTITUDE
encoder
5 INSTRUMENT SETUP
5.1 First Instrument Turn-on
Before the Altimeter starts to indicate, you must do the basic
setting of language, contrast, units, etc. After the first turn-on of
the instrument, the „FIRST SETUP“ message will show on the
display. This set-up must be completed to continue.
>
1013
mbar
DOWN UP
elektronic
S
ALTITUDE
encoder
DOWN UP
elektronic
PRESS UP+DOWN
FOR STORING
A
ALTITUDE
encoder

Page 5-1 TL-3524 USER`S MANUAL
Rev. B P/N 03-3524-2003
5.2 Main Set-up Functions Description
Table of the instrument configuration steps is shown below (Initial - firmware version 1.0).
0 LANGUAGE Select your language for communication with the instrument.
1 DISPLAY CONTRAST Select the contrast of the display.
2 PASSWORD Select your password.
3 ALTITUDE UNIT Select your local unit for altitude.
4 AIR PRESSURE UNIT Select your local unit for barometric pressure.
5 DISP. PRECISION Set the resolution of altitude that will show on the display.
6 CALIBRATION Do the calibration of altitude acc. to FAR 91.36, 91.172
FAAadvisory circular 43-6A.
7 TRANSITION ALT. Set your local transition altitude.
8 STROBE MODE Enable or disable the strobe signal to the transponder.
9 OXYGEN WARNING Select OFF = if your cockpit is pressurized,
ON = if your cockpit is not pressurized.
10 USER BUTTON Program your button for these functions:
SHOW MAX. ALT = shows the maximum altitude
of acceleration when the button is pressed,
SHOW QNH or FL = shows the set barometric pressure
when the button is pressed.
11 VOICE WARNING Enable or disable the voice warning into the headphones
(only with use of our Intercom TL-2424 or Voice Module).
12 INST. ON-LINE Check the connected instruments from the TL elektronic
iFamily® that are On-Line.
All information on this page is subject to change without prior notice. Download the latest
version of the manual from www.tl-elektronic.com and compare with you version of firmware.

Page 5-2 TL-3524 USER`S MANUAL
Rev. B P/N 03-3524-2003
5.3 How to Select Altitude Units
For selecting the altitude units, use the „Select“ button in the Set-
up menu. The selected unit is shown inversely on the black
background. When the unit has been selected, press the
„Continue“ button for storing and step to the next configuration.
ALTITUDE
encoder
CONTINUE
CONTINUE
........... ...........
ALTITUDE UNIT
SELECT
elektronic
METERS
FEET
ALTITUDE encoder
CONTINUE
CONTINUE
........... ...........
AIR PRESS UNIT
SELECT
elektronic
mbar - hPa
inch / Hg
5.4 How to Select Barometric Pressure Units
For selecting the barometric pressure units, use the „Select“
button in the Set-up menu. The selected unit is shown inversely
on the black background.When the unit has been selected, press
the „Continue“ button for storing and step to the next
configuration.
5.5 Show Altitude in 1 or 10 Unit Resolution
Select the display of altitude either in units or in tens of meters
(feet). If you select tens, the last displayed number
will be 0. The reason is to prevent disturbing caused by the
continuous changes of altitude.
5.6 How to Select Default Transition Altitude
Set your local transition altitude in this menu. This altitude will be
checked all the time. When reaching this altitude, the message
will show on the display, see point 6-9.
0
CONTINUE SET
elektronic
ALTITUDE
encoder
m
..... ......
TRANSITION ALTITUDE
ALTITUDE encoder
CONTINUE
CONTINUE
........ ........
DISP. RESOLUTION
SELECT
elektronic
1 UNIT
10 UNIT

Page 5-3 TL-3524 USER`S MANUAL
Rev. B P/N 03-3524-2003
5.8 Restore Factory Calibration
Any time you can go back to the factory calibration done
according to the pressure datum traceable to the National
Bureau of Standards.
ADJUST ALTITUDE
elektronic
ADJUST: -280m +/- 30m
ACTUAL: 253m
DIFFERENCE: 1
ALTITUDE encoder
YES
elektronic
RESTORE
FACTORY
CALIBRATION?
?
NO
ALTITUDE
encoder
5.9 Do Your Calibration
1. The calibration should be done with both the primary flight
altimeter and the TL-3524 at the same ambient temperature
within the range of +15 to +35°C (+55 to +95°F). The
power supplied to the TL-3524 should be of the same
nominal voltage as the power of the aircraft, to which it is to
be installed.
2. Connect the power to the TL-3524 for at least 5 minutes
before proceeding with the calibration.
3. With the primary flight altimeter set to 1013,25mBar (29.92 in hg), increase the system pressure
supplied by the pitot-static test equipment until the primary flight altimeter indicates -280m +/-30m
(-918ft +/-100ft) as the minimum altitude.
4. Compare the altitude shown on the display with the instant altitude and if required, adjust the
difference value by the „UP“ and „DOWN“ buttons for adjusting the instant altitude to the primary
flight altimeter. Press both buttons for storing the set value.
5. Decrease the system pressure until the primary flight altimeter indicates 9500m +/- 30m
(30750ft +/- 100ft).
6. Compare the altitude shown on the display with the instant altitude and if required, adjust the
difference value by the „UP“ and „DOWN“ buttons for adjusting the instant altitude to the primary
flight altimeter. Press both buttons for storing the set value.
7. Repeat the steps 3 to 6 until the accuracy of 15m (+/- 50ft) is obtained for both increasing
and decreasing the pressure at both the maximum and minimum calibration altitude.
8. Install a label that corresponds with the maximum altitude, to which the TL-3524 was calibrated,
on the instrument panel below the primary flight altimeter. The FAR 91.217 requires the correspondence
check to be performed. The AC43-6B provides guidance for acceptable methods to accomplish this.
5.7 Go to Calibration
A pitot-static system test equipment is required to perform the
following calibration procedures. The TL-3524 is calibrated in
the factory to the pressure datum according to the National
Bureau of Standards. When the TL-3524 has been installed in
the aircraft it must be calibrated to the primary flight altimeter
according to Advisory Circular 43-6A so as to comply with
FAR 91.36(b) and FAR 91.172.
ALTITUDE
encoder
CONTINUE
............. .............
CALIBRATION
OK
elektronic
GO TO CALIBRATION

Page 5-4 TL-3524 USER`S MANUAL
Rev. B P/N 03-3524-2003
5.10 Strobe Signal of Transponder
Some transponders have the strobe signal that activates or
deactivates the outputs of the TL-3524. If the pin no.3 on the
connector P3524 is plugged in, select „ENABLE“. If the pin
no.3 is not plugged in, select „DISABLE“.
CONTINUE
CONTINUE
............... ...............
INST. ON-LINE
elektronic
GPRS MODULE
VOICE MODULE
BROWSE
ALTITUDE
encoder
ALTITUDE
encoder
CONTINUE
CONTINUE
........... ...........
ENCODER STROBE
SELECT
elektronic
DISABLE
ENABLE
CONTINUE
CONTINUE
......... .........
OXYGEN WARNING
SELECT
elektronic
DISABLE
ENABLE
ALTITUDE encoder
5.11 Oxygen Warning
If you fly higher than 3.800m (12.500ft) above the sea level,
your cockpit should be pressurized in compliance with JAR-
OPS 1.775. If you want to be informed that the oxygen is
required, select „ENABLE“. The altitude for signalization in the
instrument is default to 3.800m (12.500ft). If you do not want
to be informed that the oxygen is required, select „DISABLE“.
CONTINUE
CONTINUE
................ ..............
USER BUTTON
SELECT
elektronic
SHOW MAX. ALT
SHOW QNH OR FL
ALTITUDE encoder
5.12 User Button
When pressed, the external User button offers you the
possibility of programming to quick show or quick switch to
the selected menu. After releasing the button, you will get
back the measured value indication. For example - if you have
set SHOW QNH or FL, after pressing the button you can
monitor barometric pressure.
5.13 iFamily® and Other Connecting Devices
As the first of aircraft instruments, the TL-3524 offers you
the possibility of connecting with other instruments from the
TL elektronic family, in order to gain simultaneous recording
of the measured values, mass PC download of all connected
instruments etc. via one cable.
If some other instruments or the GPS are connected to the
reserved inputs, this menu shows each connected instrument.
It also enables checking the connected instruments and devices.

6. OPERATIONAL MANUAL
6.1. Left Menu Description
The left main menu shows the information about the alert
altitude, the MDA, the transition altitude etc. according
to the table below.
Left menu (Initial firmware version 1.0)
First Second Description
ALERT Alert altitude
MDA MDA
TA Transition altitude
MAX Long-term memory of the maximum reached altitude
DELETE Delete the long-term memory of the maximum altitude
EXIT Exit from the second menu
Page 6-1 TL-3524 USER`S MANUAL
Rev. B P/N 03-3524-2003
?
250
ALT m
MENU FL 1013
elektronic
ALTITUDE encoder
6.1.1 Second Menu
The „OTHER“ dialog will show on the display after pressing
the left button. If you press „YES“ in this dialog, the instrument
will go to the second menu where you can get the information
about the maximum reached altitude etc.
All information on this page is subject to change without prior notice. Download the latest
version of the manual from www.tl-elektronic.com and compare with you version of firmware.
NEXT OK
elektronic
... OTHER
ALTITUDE
encoder

Page 6-2 TL-3524 USER`S MANUAL
Rev. B P/N 03-3524-2003
First Second Description
FL or Set FL (flight level at the National Bureau of Standards)
QNH or QNH barometric pressure
6.2 Right Menu Description
The right menu shows the information about the set barometric
pressure according to the table below.
DOWN UP
elektronic
ALTITUDE encoder
PRESS UP+DOWN
FOR STORING
6.2.1 Exit from the Right Menu
The set value of barometric pressure and the exit from the right
menu is after pressing both buttons simultaneously. Release the
buttons when the setting arrows vanish.
Right Menu (Initial firmware version 1.0)
All information on this page is subject to change without prior notice. Download the latest
version of the manual from www.tl-elektronic.com and compare with you version of firmware.
>
1013
mbar
DOWN UP
elektronic
S
ALTITUDE
encoder
Setting the barometric pressure: While holding the button „UP“ or „DOWN“, the barometric pressure
value always stops when reaching the value stated by the National Bureau of Standards (1013,25hPa /
29.92.inHg). In this case you have to press or hold the button „UP“ or „DOWN“ again. The inverted
symbol [S] (on the black background) will show on the display.

6.3 How to Change Configuration
If you want to change e.g. units or contrast, press and hold both
buttons and turn the instrument on. The „SETUP“ message will
show on the display. Press „OK“ and go to the Instrument
Setup.
Note, that any unauthorized change of the values in the Setup can cause damage to the instrument.
An incorrect change of the setup can endanger your life and lives of your passengers.
6.4 Set Alert Warning
By pressing the button „MODE“ a few times, you enter this
menu where you can set the altitude you want to keep. This
setting is necessary to be done always after turning the
instrument on or off. The instrument stores the latest set datum,
which will be shown on the display when being set the next
time.
6.5 How Alert Warning Works
If your aircraft is more than 50m (165ft) above or below the set
altitude, the instrument will activate the acoustic or visual
signalization. In the left part of the display an up or down arrow
will show. The arrow demonstrates the direction the aircraft
should follow in order to keep the set altitude.
Page 6-3 TL-3524 USER`S MANUAL
Rev. B P/N 03-3524-2003
OK NO
elektronic
SETUP
SETUP CONTINUE?
ALTITUDE encoder
9800
ALT
ft
NEXT QNH 1005
elektronic
ALTITUDE encoder
OFF
NEXT SET
elektronic
ALTITUDE encoder
ALERT

6.6 Set MDA or Approach Altitude
By pressing the button „MODE“ a few times, you enter this
menu where you can set the altitude for the MDA
or the approach altitude. This setting is necessary to be done
always after turning the instrument on or off. The instrument
stores the latest set datum that will be shown on the display
when being set the next time.
6.7 MDA or Approach Warning
If your aircraft reaches the MDA or the approach altitude, the
instrument will activate the acoustic or visual signalization and
this message will show on the display repeatedly in regular
intervals. You can disable the signalization (including the „MDA“
message) any time by pressing the left, the right or the User
button.
6.8 Set Different Transition Altitude
For example, if your are in another country where the transition
altitude differs from the one default in the Setup Mode,
according to the point 5-6, you can change the altitude in this
menu.
Note that if you turn the instrument off and on, the altitude
will be set again to the default value, according to the point 5-6.
6.9 „TRANSITION ALTITUDE REACHED“ Message
If you reach the transition altitude, the instrument will activate
the acoustic or visual signalization and this message
will show on the display. If you want the instrument to change
the barometric pressure automatically from the QNH
to the National Bureau Standard (FL ) 1013,25hPa
(29.92inHg), press the button „YES“.
Page 6-4 TL-3524 USER`S MANUAL
Rev. B P/N 03-3524-2003
MDA
NEXT FL 1013
elektronic
ALTITUDE
encoder
1600
NEXT SET
elektronic
ALTITUDE
encoder
m
TA
100
NEXT OFF
elektronic
ALTITUDE
encoder
m
MDA
NO
elektronic
TRANSITION ALT
IS REACHED.
CHANGE QNH TO FL?
!
ALTITUDE
encoder
YES