Larsen & Brusgaard ALTITRACK User manual

LARSEN & BRUSGAARD
Mosevej 3
4070 Kirke Hyllinge, Denmark
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]

WARNING!
FAILURE TO FOLLOW ALL WARNINGS, INSTRUCTIONS, AND REQUIRED PROCEDURES MAY
INCREASE THE RISK OF SERIOUS INJURY AND DEATH.
Always ensure your altimeter is adjusted to zero prior to jumping to account for any
changes in barometric pressure.
Altimeters may give erroneous readings if you are tumbling or the altimeter is in
a burble (wake), such as when sit flying or sky surfing. Chest mount altimeters are
more vulnerable to this problem. If you are in doubt about how this limitation af-
fects your skydiving, consult a licensed instructor.
DO NOT use this equipment unless you are on, or have passed an approved skydiving
course.
Use the ALTITRACK™ at your own risk.
ALTITRACK is a trademark of Larsen & Brusgaard, Denmark.
©2006. Larsen & Brusgaard ApS. All rights reserved.
Larsen & Brusgaard operates a policy of continuous development.
Therefore, we reserve the right to make changes and improvements to any of the
products described in this guide without prior notice.

INDEX
Introduction ............................................................................................................................ 8
Analog Display with Digital Accuracy........................................................................................ 8
Features .............................................................................................................................. 9
Software & functions ............................................................................................................. 10
Description .............................................................................................................................. 11
Analog Face ......................................................................................................................... 11
Digital Face.......................................................................................................................... 12
PC Connection ...................................................................................................................... 13
Display ................................................................................................................................ 14
Power ON ................................................................................................................................. 16
Road Map................................................................................................................................. 17
Customising the ALTITRACK Settings .......................................................................................... 17
SETUP Selector ......................................................................................................................... 18
To enter the SETUP Selector .................................................................................................... 19
To leave the SETUP Selector.................................................................................................... 19
Main Setup Display................................................................................................................ 20
Turn the ALTITRACK OFF ......................................................................................................... 22
Delete Jump......................................................................................................................... 24
Set Total Number of Jumps ..................................................................................................... 25
Set Total Freefall Time............................................................................................................ 26
Set Current Date ................................................................................................................... 27
Set Current Time ................................................................................................................... 28
Delete Logbook..................................................................................................................... 29
MPH / KMH Selector .............................................................................................................. 30
Feet / Meter Selector............................................................................................................. 31
TAS / SAS Selector................................................................................................................. 32
Canopy Log Enable / Disable................................................................................................... 34
Dive Type Selector................................................................................................................. 35
* Dive Type, STu (Student)................................................................................................. 37
** Dive Type, SLO (Slow)................................................................................................... 37
Celsius / Fahrenheit Selector................................................................................................... 38
Beep ON / OFF ...................................................................................................................... 39
Zeroing and Altitude Offset....................................................................................................... 40
Zeroing................................................................................................................................ 40

Altitude Offset...................................................................................................................... 42
Enable / Disable Backlighting.................................................................................................... 43
Jump Mode .............................................................................................................................. 43
MAIN Selector .......................................................................................................................... 44
Logbook Screen # 1. (Main information) ................................................................................... 46
Logbook Screen # 2. (Playback, Jump Profile)............................................................................ 49
Logbook Screen # 3. (Date, Time and Dive Type) ........................................................................ 51
Remaining Logbook Storage ...................................................................................................... 52
Resetting the ALTITRACK........................................................................................................... 53
Battery Replacement ................................................................................................................ 54
Battery Cover ........................................................................................................................... 55
Battery Status .......................................................................................................................... 55
Upgrading the ALTITRACK Firmware............................................................................................ 56
Operational hints and trouble-shooting...................................................................................... 57
APPENDIX
Removing and Mounting the ALTITRACK Rubber Support .............................................................. 58
TAS and SAS ............................................................................................................................. 68
Specifications .......................................................................................................................... 70
Accessories .............................................................................................................................. 73
Jump-Track .............................................................................................................................. 73
Warranty.................................................................................................................................. 75

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9
Features
· Electronic altimeter with analog scale.
· First altimeter with ergonomic fit.
· First altimeter with 45 deg. offset scale for easy line of sight viewing when
mounted on the hand/wrist.
· Electroluminescent backlight for night jumping. Can remain ON for several hours.
· Smooth pointer movement...no erratic movement, no guessing.
· Shock and water resistant.
· Automatic calibration to local elevation.
· Scratch proof, antiglare lens made from high-impact etched glass.
· LCD screen for easy and intuitive operation and information review.
· Powerful electronic logbook packed with advanced features – easy access by
simply turning over the altimeter.
· Operational at sub-zero temperatures.
· Always ON. No need to be powered OFF.
Introduction
Analog Display with Digital Accuracy
At first glance, the ALTITRACK™ looks like many of the more common analog altimeters
used throughout the world... but look a little closer. The ALTITRACK™ is the only sport
altimeter with an analog face, but utilizes the most high tech and durable digital
components for accuracy that surpasses every other mechanical sport altimeter
currently available.
Imagine a visual altimeter that records your jump information from exit to landing,
has the ability to download jump information to a computer, has an ergonomic fit, is
both shock and water resistant, has upgradeable software... and most of all... is extremely
easy to use. You just found the answer you’ve been looking for...ALTITRACK™.

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Software & functions
· Storing up to 15 minutes of data of each jump with a total of 6.5 hours
recording time (e.g. 200 jumps with two minute profiles).
· Records and displays jump details from exit to landing, date, jump number, exit
altitude, opening altitude, freefall time and complete
speed statistics for maximum and average speeds in TAS or SAS.
· Choice of readings in feet or meters, mph or kmh.
· Accumulates the total number of jumps up to 19,999 jumps.
· Compatible with the new Jump-Track 3.0 for download of jump data to a
PC via USB, (Jump-Track 3.0™ and USB-Track™ sold separately).
· Upgradeable firmware (requires Jump-Track 3.0™ and USB connection).
· Replay of any jump stored in the logbook with true pointer movement and
display of speeds, altitudes, etc. (great for student altitude awareness training).
· Long lasting ½ AA lithium battery.
· Velcro straps for fast and easy mounting in a variety of locations.
· A selection of optional silicone rubber platforms are available for mounting on
the hand, wrist, chest or leg-strap.
Description
Analog Face
1. Right Front Button
Enable / Disable backlight after performing Right Front Button ACCESS
(see page 43).
2. Left Front Button
Zeroing and Altitude Offset after performing Left Front Button ACCESS
(see page 40).
3. ACCESS indication
(Flashes every 15 seconds when unit is powered ON, except when
backlight is ON (night jumping)
4. Low battery indicator (see page 55)
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2
3
4

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Digital Face
6. Rubber support
To change the rubber support see page 58
7. Battery compartment
To replace the battery, see page 54
8. LCD display (see page 14)
9. Left button
10. Mode button
11. Right button
12. Reset button (below battery cover)
To perform reset, see page 53
PC Connection
5. Connector for PC data download and firmware upgrade (under rubber cover)
(Jump-Track ver. 3.0 and USB-Track required)
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7
8
9 10 11
12
5

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Display
1. Jump Number in logbook
Shows year when displaying date
Shows hours when displaying time
2. Date / Time icons
3. Freefall and Canopy log indication
4. Exit Altitude in logbook
5. Freefall time in logbook
Shows month when displaying date
Shows minutes when displaying time
6. Dive Type icon
7. Jump Mode indicator
Flashes when the ALTITRACK is in Jump Mode
8. Deployment altitude in logbook
Displays current altitude when in “Altitude Screen”
9. Battery status
10. Feet / Meter status
11. Average / Minimum / Maximum speed in logbook
12. Speed in logbook
Shows day when displaying date
Shows seconds when displaying time
13. MPH / KPH status
14. True Airspeed / Skydiver´s Airspeed status
15. PC status
ON when connected to a PC
16. Delete logbook icon
17. Clock icon
Used when displaying current time and total freefall time
18. Total icon
Used when displaying total jumps and total freefall time
19. Delete current jump icon
20. OFF icon
Used when turning the ALTITRACK OFF (see page 22)
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3 4 5 6 7 8 9
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12
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14
20 19 18 17 16 15

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Power ON
The ALTITRACK has been powered OFF prior to shipping from our factory. To turn the
power ON, press and hold any button until the unit beeps, then release the button.
The ALTITRACK runs a self-test and moves the pointer from ”6” to zero.
The unit displays “Logbook screen # 1”. (Main information)” on the LCD.
The ALTITRACK uses very little battery power and does not need to be switched OFF.
However, we recommend that you switch OFF the ALTITRACK when traveling on
commercial flights, when driving in mountanious areas and when the jump season is
over. To power OFF the ALTITRACK, see page 22.
NOTE: If no button has been pressed within 5 minutes the ALTITRACK switches to the
“Main Display” (showing Time, Temperature inside instrument and Altitude).
Road Map
It is recommended that you familiarize yourself with the ALTITRACK ROAD MAP
which is a very helpful tool when using the ALTITRACK for the first time.
Customising the ALTITRACK Settings
The ALTITRACK can be customised to your personal settings. Your settings will be
stored and recalled also after replacing batteries. When you first get the ALTITRACK,
we recommend you to go through the SETUP Selector to customise the ALTITRACK.
Example
No data stored
Example

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SETUP Selector
In the SETUP Selector the following options can be selected:
· Main Setup display
· Turn the ALTITRACK OFF
· Delete jump
· Set total number of jumps
· Set total freefall time
· Set current date
· Set current time
· Delete logbook
· MPH / KMH
· Feet / Meter
· True Airspeed (TAS) / Skydiver’s Airspeed (SAS)
· Canopy log Enable / Disable
· Dive Type
· Celsius / Fahrenheit
· Beep ON / OFF
To enter the SETUP Selector
Press and hold for 3 seconds.
To leave the SETUP Selector
Wait until the display times out or,
press or repeatedly until returning to the Main Setup Display,
then press to exit.
NOTE: If no button has been pressed within 5 minutes after choosing any SETUP win-
dow, the ALTITRACK will return to the Main window (showing Time, Temperature inside
instrument and Altitude).

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Main Setup Display
Explanation
The Main setup display accesses to the following functions:
Turn the ALTITRACK OFF- Delete Jump - Set total number of jumps - Set total freefall time - Set current date
- Set current time - Delete logbook - MPH / KMH - Feet / Meter - True Airspeed (TAS) / Skydiver’s Airspeed (SAS)
- Canopy log Enable / Disable - Dive Type - Celsius / Fahrenheit - Beep ON / OFF
Main Setup Display
Displays all current settings
Press to move forward in setup options.
Press to move backward in setup options.
To return to the “Main Selector”, press or repeatedly to return to this screen,
then press
Shows factory default set-up

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Turn the ALTITRACK OFF
Press to select OFF.
Main Setup Display - Turn the ALTITRACK OFF - Delete Jump - Set total number of jumps - Set total freefall
time - Set current date - Set current time - Delete logbook - MPH / KMH - Feet / Meter - True Airspeed (TAS) /
Skydiver’s Airspeed (SAS) - Canopy log Enable / Disable - Dive Type - Celsius / Fahrenheit - Beep ON / OFF
Press (“OFF” flashes).
Press to increase the counter to “Match Value”.
Press to decrease “Match Value”.
At “Match Value” press
The pointer will move to the 6 o’clock position and the unit turns OFF.
We recommend that you switch OFF the ALTITRACK when traveling on commercial
flights, when driving in mountainous areas and when the jump season is over.
NOTE: When switched OFF the ALTITRACK cannot be used for jumping.
Customer settings and clock are not lost when switched OFF.
To power the ALTITRACK ON, see page 16.
For information about “Remaining Logbook Storage”, see page 52.
Remaining Logbook Storage
(in minutes)
“Match Value” Counter

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Delete Jump
Press again to select Delete Jump Icon
Main Setup Display - Turn the ALTITRACK OFF - Delete Jump - Set total number of jumps - Set total freefall time
- Set current date - Set current time - Delete logbook - MPH / KMH - Feet / Meter - True Airspeed (TAS) /
Skydiver’s Airspeed (SAS) - Canopy log Enable / Disable - Dive Type - Celsius / Fahrenheit - Beep ON / OFF
At “Match Value” press to delete current jump.
If you press before you select the match value, the delete jump action is cancelled.
NOTE: At the same time the accumulated number of jumps and freefall time are
updated if the deleted jump is the last jump logged.
Set Total Number of Jumps
Press again to select TOTAL
Main Setup Display - Turn the ALTITRACK OFF - Delete Jump - Set total number of jumps - Set total freefall
time - Set current date - Set current time - Delete logbook - MPH / KMH - Feet / Meter - True Airspeed (TAS) /
Skydiver’s Airspeed (SAS) - Canopy log Enable / Disable - Dive Type - Celsius / Fahrenheit - Beep ON / OFF
NOTE: Total number of jumps cannot be set to a value below the highest stored
jump number.
Press (“Delete Jump Icon” flashes).
Press to increase the coun-
ter to “Match Value”.
Press to decrease “Match Value”.
Example
Press (“TOTAL” flashes).
Press to increase the jump total.
Press to decrease the jump total.
Press to store the new to-
tal number of jumps and end.

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Set Total Freefall Time
Press again to select TOTAL FF TIME.
Main Setup Display - Turn the ALTITRACK OFF - Delete Jump - Set total number of jumps - Set total freefall time
- Set current date - Set current time - Delete logbook - MPH / KMH - Feet / Meter - True Airspeed (TAS) /
Skydiver’s Airspeed (SAS) - Canopy log Enable / Disable - Dive Type - Celsius / Fahrenheit - Beep ON / OFF
Set Current Date
Press again to select “Clock and Date” icon.
Main Setup Display - Turn the ALTITRACK OFF - Delete Jump - Set total number of jumps - Set total freefall time
- Set current date - Set current time - Delete logbook - MPH / KMH - Feet / Meter - True Airspeed (TAS) /
Skydiver’s Airspeed (SAS) - Canopy log Enable / Disable - Dive Type - Celsius / Fahrenheit - Beep ON / OFF
NOTE: Date format is YYYY:MM:DD.
Press (“TOTAL” flashes).
Press to increase total freefall time.
Press to decrease total freefall time.
Press to store the new feefall time and end.
Press (“Clock” icon flashes).
Press to increase date value.
Press to decrease date value.
Press to store the new date and end.

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Set Current Time
Press again to select “Clock and Time” icon
Main Setup Display - Turn the ALTITRACK OFF - Delete Jump - Set total number of jumps - Set total freefall time
- Set current date - Set current time - Delete logbook - MPH / KMH - Feet / Meter - True Airspeed (TAS) /
Skydiver’s Airspeed (SAS) - Canopy log Enable / Disable - Dive Type - Celsius / Fahrenheit - Beep ON / OFF
NOTE: Time format is 24 hours.
Delete Logbook
Press again to select “Delete Logbook” icon.
Main Setup Display - Turn the ALTITRACK OFF - Delete Jump - Set total number of jumps - Set total freefall time
- Set current date - Set current time - Delete logbook - MPH / KMH - Feet / Meter - True Airspeed (TAS) /
Skydiver’s Airspeed (SAS) - Canopy log Enable / Disable - Dive Type - Celsius / Fahrenheit - Beep ON / OFF
Press (“Delete Logbook” icon flashes)
Press to increase the counter to “Match Value”
Press to decrease “Match Value”
At “Match Value” press to delete logbook.
NOTE: Caution: The accumulated number of jumps and freefall time are also erased.
Warning: Once is pressed at match value, there is no way to restore the information.
Press (“Clock” icon flashes).
Press to increase time value.
Press to decrease time value.
Press to store the new time and end.
“Match Value” Counter

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MPH / KMH Selector
Press again to select “MPH/KMH” icon.
Main Setup Display - Turn the ALTITRACK OFF - Delete Jump - Set total number of jumps - Set total freefall time
- Set current date - Set current time - Delete logbook - MPH / KMH - Feet / Meter - True Airspeed (TAS) /
Skydiver’s Airspeed (SAS) - Canopy log Enable / Disable - Dive Type - Celsius / Fahrenheit - Beep ON / OFF
NOTE: Jump data are continuously stored in mph and kmh.
At any time stored information may be displayed in either unit of measurement by
selecting the respective mode.
Feet / Meter Selector
Press again to select “FT/MTR” icon.
Main Setup Display - Turn the ALTITRACK OFF - Delete Jump - Set total number of jumps - Set total freefall time
- Set current date - Set current time - Delete logbook - MPH / KMH - Feet / Meter - True Airspeed (TAS) /
Skydiver’s Airspeed (SAS) - Canopy log Enable / Disable - Dive Type - Celsius / Fahrenheit - Beep ON / OFF
NOTE: Jump data are continuously stored in both feet and meters.
At any time stored information may be displayed in either unit of measurement by
selecting the respective mode.
Press to toggle between MPH and KMH. Press to toggle between FT and MTR.

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TAS/SAS Selector
Press again to select “TAS/SAS” icon.
Main Setup Display - Turn the ALTITRACK OFF - Delete Jump - Set total number of jumps - Set total freefall time
- Set current date - Set current time - Delete logbook - MPH / KMH - Feet / Meter - True Airspeed (TAS) /
Skydiver’s Airspeed (SAS) - Canopy log Enable / Disable - Dive Type - Celsius / Fahrenheit - Beep ON / OFF
Definitions:
True Airspeed (TAS) and Skydiver’s Airspeed (SAS) are two methods of calculating
the airspeed of a moving/flying/falling object.
TAS is a term used in aviation: It is the speed of an object relative to the surrounding
air, regardless of the altitude.
SAS is a new concept developed by LARSEN & BRUSGAARD: SAS is the speed of a
skydiver calculated from measurements of air pressure and temperature and con-
verted to a fixed air pressure (875.3 mb) and a fixed temperature (+7.080C) which
corresponds to 4,000 feet ASL
TAS
A skydiver’s True Airspeed (TAS) relative to the ground changes as a function of the
altitude (air pressure) and temperature which makes it difficult to compare fall-rates.
Example: A skydiver (in a fixed freefall position) who has a terminal fallrate of 62
meters/sec at 10,000 feet will have a terminal fallrate of 50 meters/sec at 3,000
feet. It will be seen that the difference in altitude (air pressure) makes it difficult to
compare the fall-rates when measured using TAS.
See separate section in the appendix for more information about TAS and SAS.
True Airspeed (TAS) / Skydiver’s Airspeed (SAS)
NOTE: Jump data are continuously stored in both TAS and SAS. Stored information maybe displayed in either
unit of measurement by selecting the respective mode.
Press to toggle between TAS and SAS.

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Canopy Log Enable / Disable
Press again to select “Freefall+Canopy” icon.
Main Setup Display - Turn the ALTITRACK OFF - Delete Jump - Set total number of jumps - Set total freefall time
- Set current date - Set current time - Delete logbook - MPH / KMH - Feet / Meter - True Airspeed (TAS) /
Skydiver’s Airspeed (SAS) - Canopy log Enable / Disable - Dive Type - Celsius / Fahrenheit - Beep ON / OFF
Description
Choice of storing freefall profile, or freefall and canopy profiles. More jumps can be
stored in memory when choosing freefall profile only.
: Logging freefall profile
: Logging freefall and canopy profiles
Dive Type Selector
Press again to select DIVE TYPE.
Main Setup Display - Turn the ALTITRACK OFF - Delete Jump - Set total number of jumps - Set total freefall time
- Set current date - Set current time - Delete logbook - MPH / KMH - Feet / Meter - True Airspeed (TAS) /
Skydiver’s Airspeed (SAS) - Canopy log Enable / Disable - Dive Type - Celsius / Fahrenheit - Beep ON / OFF
Description
This mode can be used to:
1. Store the Dive Type to be performed on the next jump
The selected Dive Type is displayed in the Logbook Screen #3 and inserted into
Jump-Track if downloading jump data to a PC.
2. Change freefall sensitivity
Only when Dive Type is set to Stu or SLO. See on next page.
Press to enable / disable canopy
profile log.

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Dive Types:
0 = (factory default)
1 = 1 (User selectable in JUMP-TRACK)
2 = 2 (User selectable in JUMP-TRACK)
AFF = (Accelerated Free Fall)
TAn = (Tandem)
STu = (Student)*
PHO = (Photo)
4 = (4-way)
8 = (8-way)
FrE = (Freestyle)
SLO = (Slow) **
Dive Type Selector
Press (“DIVE TYPE” flashes).
Press to scroll forward through the Dive Type list.
Press to scroll backward through the Dive Type list.
Press to store your selection before moving to another menu
* Dive Type, STu (Student)
In STU the descent rate parameters are changed to allow detection of short freefalls,(2 sec).
** Dive Type, SLO (Slow)
In SLO the exit fallrate and deployment calculation parameters are changed to fit
very slow falling types of dives, like wing suit dives, etc.

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Celsius / Fahrenheit Selector
Press again to select “C” icon
Main Setup Display - Turn the ALTITRACK OFF - Delete Jump - Set total number of jumps - Set total freefall time
- Set current date - Set current time - Delete logbook - MPH / KMH - Feet / Meter - True Airspeed (TAS) /
Skydiver’s Airspeed (SAS) - Canopy log Enable / Disable - Dive Type - Celsius / Fahrenheit - Beep ON / OFF
Beep ON / OFF
Press again to select “BEEP” icon.
Main Setup Display - Turn the ALTITRACK OFF - Delete Jump - Set total number of jumps - Set total freefall time
- Set current date - Set current time - Delete logbook - MPH / KMH - Feet / Meter - True Airspeed (TAS) /
Skydiver’s Airspeed (SAS) - Canopy log Enable / Disable - Dive Type - Celsius / Fahrenheit - Beep ON / OFF
Press to toggle between Celsius and
Fahrenheit. Press to toggle between BEEP ON/OFF.