Aim MyChron Light TG User manual

MyChron Light TG
Release 1.04 1
Dear MyChron Light TG Owner
Your new Instrument is the evolution of MyChron Light MCL.
This new instrument merges all functionalities and values of
MyChron Light MCL with the new graphic display and gives
you a lot of new useful functions like histograms and
different time counter settings.
The small size of MyChron Light TG allows you to install it
anywhere without problems.
MyChron Light TG standard version is a plug and play
instrument. There is nothing you need to do: only switch it
on and it starts recording. Moreover, the automatic switch
off after 20 minutes of inactivity avoid undesired battery
exhaustion.
Your pocket MyChron Light TG will be on your side in
every race, exactly like AIM customer service, that is
present at almost all major races throughout the country and
every day from 9.00 am to 5.00 pm.
For any doubt, information or question, please visit our
website: www.aim-sportline.com.
Thank you for your purchase of MyChron Light TG.

MyChron Light TG
Release 1.04 2
TABLE OF CONTENTS
Getting Started with MyChron Light TG····································· 3
MyChron Light TG and it’s parts················································ 4
The Display ··························································································· 5
The Keyboard·······················································································7
The Infrared Transmitters··································································9
How to install MyChron Light TG ············································ 10
How to power the lap timer·······························································11
How to switch on / off the lap timer ·················································12
On track······················································································ 13
Configuration functions·····································································14
Clear test data················································································15
Mode······························································································· 16
Lap counter············································································ 16
Qualify··················································································· 16
Race······················································································· 16
Obscuring time···············································································17
Track······························································································· 21
Select ····················································································· 21
Enter names ··········································································· 21
Configure························································································ 22
Split························································································ 23
Driver····················································································· 23
Display setup ········································································· 23
Reverse············································································· 24
Set contrast······································································· 24
Rolling Number································································ 24
Screensaver······································································ 24
System information································································ 24
Utility Functions·················································································25
View data while driving·································································26
Memory Management ···································································· 26
View data per best lap time···························································· 27
View other completed lap data ······················································27
Maintenance························································································28

MyChron Light TG
Release 1.04 3
Getting Started with MyChron Light TG
Aim developed and tested your MyChron Light TG to give
you precise and accurate results. Your MyChron Light TG
is always ready with you. Here are the parts of your kit:
MyChron Light TG standard kit:
•MyChron Light TG display unit with green display
•Infrared Lap Transmitter and Receiver.
•Two 3 volts internal round batteries
MyChron Light TG optional:
•Backlight (only on externally powered version)
•Blue display (on externally powered version)
•External power cables (external power version)
•Infrared Split Transmitters
•USB data download cable and Light Analyzer
software.
Please note: on the externally powered version, the
backlight switches automatically on when you switch
on your lap timer and cannot be switched off.

MyChron Light TG
Release 1.04
MyChron Light TG and it’s parts
Although your MyChron Light TG is a plug and play
instrument, we suggest you to read carefully these few
notes, to be sure that your instrument is always at its best.
In figure 1 you see, MyChron Light TG kit.
Figure 1 - MyChron Light TG display unit and IR receiver.
In the middle of the picture is the graphic display, while on
the right is the Infrared receiver. It contains the two 3 Volts
batteries that power both the receiver and the lap timer. The
receiver needs an Infrared Transmitter placed on the side of
the track and has to “see” it so please, place the “receiving
eye”, circled in Figure 1, pointed to the transmitter.
4

MyChron Light TG
Release 1.04
The Display
LAGUNA SECA
---
off on
1:53:37
MENU VIEW
MEM
Run and Lap Number
Lap / Split Time
Date
Time
Week Day
Battery Voltage
Rubber
Pushbutton
Functions
BEST
Low battery warning
Track Name
*** BEST--LAP***
Best Lap Time
Welcome Message
Best Lap Time
Figure 2 - Description of MyChron Light TG display
MyChron Light TG has various pages that can show
different information, namely:
1 on top row: track name, run and lap number, best lap
time, low battery warning; battery charge status
appears at power on and disappears after one minute;
it re-appears if battery charge status is low;
2 on central row: lap and split times, date, time, battery
voltage. Use “VIEW” button to switch among the
pages;
5

MyChron Light TG
Release 1.04 6
3 this row shows welcome message at power on and
disappears after one minute; it re-appears showing
best lap time when recorded
4 the bottom row shows keyboard functions.
Please note: graphic display colour is different in the two
versions of MyChron Light TG: standard version (internally
powered) has a green background display, while optional
externally powered version has a blue background display.

MyChron Light TG
Release 1.04
The Keyboard
on
off
12 43
Figure 3 - MyChron Light TG keyboard
MyChron Light TG keyboard has four rubber pushbuttons
used to configure it, recall recorded data and clear the
internal memory.
The four pushbuttons are used to:
1 Activate “Menu” function, scroll down among all
functions options, increase digit values.
2 Scroll functions options, increase digit values.
3 See best lap time and all information about lap times,
enter any function, save changes. Pressed together
with button 4 switches off MyChron Light TG.
4 Switch on MyChron Light TG, see date, time, week
day and battery voltage; discard changes; exit any
selected function. If pressed together with 3button
switches off MyChron Light TG.
7

MyChron Light TG
Release 1.04 8
To run the system in DEMO MODE, please switch on the
lap timer and then press buttons “1” and “2”.
***DEMO MODE***
text appears and your MyChron Light TG runs in DEMO
MODE.
Please note: you cannot run the system in DEMO MODE if
the lap timer is already switched on: you must switch it off
and then already on. To stop DEMO MODE, please switch
off your MyChron Light TG.
Your MyChron Light TG has an automatic auto-power off
function that switches it off after 20 minutes of inactivity.
This duration time has been expressly increased to allow
MyChron Light TG to be used on particularly long tracks
(like Nurbürgring for instance). This function is only present
on the standard version; externally powered version does
not have AUTO POWER OFF function. Moreover, please
note: running in DEMO MODE DISABLES AUTO-POWER
OFF FUNCTION

MyChron Light TG
Release 1.04 9
The Infrared Transmitters
Your MyChron Light TG is an intelligent lap timer and can
detect the signals of two different transmitters: the lap
transmitter and the split transmitter. These two objects
differs in the kind of signal they emit; MyChron Light TG
can distinguish their signals, and thereby record a split time
or a lap time.
With these new useful transmitters you will no more throw
away all your data if only missing one signal.
While with the old transmitters lap signal and split signal
where the same and if you missed one signal your
instrument shifted start / finish line, with these new ones,
also if you miss a split or a lap signal, when the instrument
gets the next lap signal it re-starts calculating splits and laps
correctly and does no more shift start / finish line.
Your standard kit includes one transmitter, the lap one. The
split transmitter is optional.

MyChron Light TG
Release 1.04
How to install MyChron Light TG
Please follow carefully these few instructions in order
to preserve your instrument and record reliable data.
•Choose a place where the lap timer will not be in contact
with oil or fuel nor too close to heat sources.
•Your MyChron Light TG can suffer vibrations, this is
why it is arranged with four thread holes (highlighted with
four arrows in figure 4) you can use to install it.
Figure 4 - MyChron Light TG rear view
If you have bought an optional externally powered
version of MyChron Light TG, you will find two cables
coming out from the bottom of the lap timer, you should
connect these cables to an external 7-15 V power source
10

MyChron Light TG
Release 1.04
(the car / bike battery for instance). Please connect the red
wire to the battery positive pole (+) and the black one to the
battery negative pole (-)
How to power the lap timer
Your MyChron Light TG standard version is powered by
two 3 volts round batteries inserted in the case of the
infrared receiver.
Please note: round batteries are given as equipment.
To change the batteries, please unscrew the four screws
located on top of the Infrared Receiver case (highlighted
with two arrows and two circles in figure 10) and substitute
the two batteries.
Figure 5 - Position of screws of IR receiver case
11

MyChron Light TG
Release 1.04
How to switch on / off the lap timer
on
off
12 43
Figure 6 - MyChron Light TG keyboard
To switch on your MyChron Light TG, please press the
pushbutton on the right of the keyboard (button number 4in
figure 6).
To switch off your MyChron light TG, please press button
4together with the one on its left (to say buttons 3and 4
of the keyboard’s figure).
Please note: your MyChron Light TG standard version has
an auto-power off option that switches off the lap timer after
20 minutes of inactivity. Optional externally powered
version does not have this option and, moreover, DEMO
MODE disables auto-power off function.
12

MyChron Light TG
Release 1.04
On track
As you switch on your MyChron light TG for the first time it
shows some information. Here they are shown:
AIM MyChron TG
** V 13.11 **
S.N. 0000000123
•The first row shows instrument’s name
•The second row shows firmware version
•The third row shows instrument’s serial number.
After a few seconds the display turns to display mode. As in
figure 7.
MENU
1:53:37
LAGUNA SECA
on
off
MEM
--- VIEW
BEST
***BEST--LAP***
Figure 7 - MyChron Light TG in display mode
13

MyChron Light TG
Release 1.04 14
Configuration functions
Before starting, please configure your MyChron Light TG,
in order to get correct data. Here is the procedure to do it.
To enter “configuration mode”, please push “MENU” button.
The following list of configurable functions appears:
1. Clear test data
2. Mode
3. Obscuring time
4. Track
5. Configure
Please use “DOWN” and “UP” button to select the function
you want to set and then press “OK” button to set it.
In the following pages is explained how to set all functions.
Note: configurable functions list, above reported, is
from here onwards called first list.

MyChron Light TG
Release 1.04 15
Clear test data
Clear Test data function allows you to clear the memory of
your MyChron Light TG. If you want to clear test data,
please:
•enter configuration Menu pressing MENU button.
•Clear test data option is the first of the first list.
Please press “OK” button.
•A text asking for confirmation appears:
“Confirm clear?”
you have two options: press “YES” button to clear
or “NO” button not to. When MyChron Light TG is
clearing its memory, a wait bar showing clearing
status, together with
Test data cleared
text appears
Please note: we strongly recommend you to
clear lap timer memory frequently and after
each download.

MyChron Light TG
Release 1.04 16
Mode
Mode function allows you to set lap timer recording mode. If
you want to set your lap timer mode, please
•Select mode in the first list and press “OK”;
•The following list appears:
- Lap counter
- Qualify
- Race
You can set all parameters. Please use “DOWN” and “UP”
buttons to select one option and “OK” button to enter it.
Lap counter This option allows you to set a lap counter.
Qualify Set to this option MyChron Light TG
shows the remaining time to the end of the
qualifying session. The system asks you to
enter session duration time in minutes.
Accepted values are between 5 and 60.
Race Set to this option MyChron Light TG
shows how many laps remain to the end of
the race The system asks you to enter the
race number of laps.

MyChron Light TG
Release 1.04 17
Obscuring time
Obscuring time function allows you to decide whether to
capture split times or not. The obscuring time is a period
during which the Infrared receiver, after having acquired
lap/split marker, is “blind” and cannot detect markers. If you
do not wish to capture split times on a track where more
than one transmitter is positioned, please set the obscuring
time to a value of about 5 seconds lower than the track best
lap time. If, on the contrary, you wish to capture split times,
please set these parameters to a low value: the minimum
value the instrument accepts is 3, while the maximum is 180.
If you want to set obscuring time, please:
•select obscuring time function in the first list.
•use “DEC-“, and “INC+” buttons to set digit
numbers, “OK” button to save changes and
“CANC” to discard changes.
Here follows three examples of Obscuring time configuration.

MyChron Light TG
Release 1.04
Example 1) The track is equipped with only one lap
transmitter
Start/Finish – Lap transmitter
Lap time 1’ 25”
Figure 8 - The track has only one lap transmitter
In this case you cannot acquire split times because the track
is not equipped with split transmitters. We recommend to set
the following value:
•Obscuring time: please set a time lower than your
best lap time. In this example, best lap time is
1’25”: you can for example set 1’20”.
18

MyChron Light TG
Release 1.04
Example 2) The track is equipped with one lap
transmitter and two split transmitters but you do not
wish to capture split times
Second split transmitter:
Time 50”
19
Start/Finish – Lap transmitter
Lap time 1’ 25”
First split transmitter:
Time 30”
Figure 9 - The track has one lap and two split transmitters
As the track is equipped with both lap transmitter and split
transmitters, but you do not wish to capture split times,
please set the following value:
•Obscuring time: set a time lower than your best lap
time and greater than the time elapsed at the last
intermediate before the finish line. In this example,
you should set a value included between 50” and
1’25”.

MyChron Light TG
Release 1.04
Example 3) The track is equipped with one lap
transmitter and two split transmitters and you wish
to capture split times
Figure 10 - The track has one lap and two split transmitters
Second split transmitter:
Time 50”
Start/Finish – Lap transmitter
Lap time 1’ 25”
First split transmitter:
Time 30”
As the track is equipped with one lap transmitter and two
split transmitters and you wish to capture split times, please
set the following value:
•Obscuring time: must be lower than minimum split
time. In this example: first split time is 30”, second
one is 20”, third one is 35”: minimum split time is
the second one (20”), please set obscuring time to
a value lower than 20”.
20