Qstarz LT-8000GT User manual

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LT-8000GT GPS Lap Timer User’s Guide
A. LT-8000GT Package Contents:
1) QSTARZ LT-8000GT unit
2) USB Type C cable
3) Quick Start Guide
4) Exclusive Sticker + Warranty card
(1) (2) (3) (4)

Main functions:
 Support GPS/GLONSASS/QZSSS, eXtreme 25Hz Log to record 25 times per second
 Multi-Function Device –Performance Timer, Lap Timer and GPS Logger
 3.2”TFTcolor display and real-time perform race timing analysis
 Drag Race by 1/4 mile, Speed, Distance and 0-Speed-0
 Circuit Race by Practice, Prediction, Race, Challenge and Custom
 Real time Lap/Spilt/Sector Comparison
 Auto global track recognition & view circuit thumbnails
 Auto Start-Run after device senses forward motion
 History database organized as Calendar and table type for easily review
 Flexible Track Manager –On-Device created to User track, and QRacing Sync to Shared track
 Visualized GPS logger as a dashboard speedometer
 Built-in 6-axis gravity sensor, which can sense and measure the G-force state and the inclination of both sides
at any time (20 sensing times per second)
 WiFi & Bluetooth LE can be used with QRacing APP for data transmission and lap time measurement
 Auto-speedometer for your driving every day
 Built-in GNSSS antenna and external antenna connecter strengthen the car heat insulation paper limit
Specifications:
 GPS: 25Hz GPS/GLONASS/Galileo/BeiDou
 3.2”(320x240) TFT Color display with 252K color
 Wireless function: Bluetooth LE 5.0 + Wi-Fi 2.4G
 Built-in large memory and view history data easily
 Ultra lower power consumption up to 14hrs operation (under LCD backlight on)
 Sensor/Antenna: 6-axis motion sensor/built-in antenna and external antenna MCX socket
 8 Function buttons –4 Direction Buttons, Back, Enter, Multi-function, and Power Buttons
 3 LED Indicators –Green for Screen Power Saving, Orange for Charging, and Red for Alert
 Device recognized as USB removable disk for data access with computer conveniently
 Raise beeper function to notice some status of device

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 Less than 15-Sec. AGPS fix support to realize faster TTFF and positioning under warm start
 USB Type C interface for charging, data download and firmware update
 Input power: 5V, 750mA
 IPX-7 water resistance and Firmware upgradable
 Device Dimension (LxWxH): 117 x 72 x 31mm / Weight: 158 grams (Mounting bracket excluded)
 Environment temperature- Operation: -10℃to +60℃/ Storage: -20℃to +60℃/ Charging: 0℃to +45℃
Notification: Battery life varies by configuration, operating conditions, and other factors. Maximum battery capacity
decreases with time and use.
B. Appearance
Name
Icon
Function
1. Power button
Press for 3 seconds to power on or power off
2. Enter/Set button
Press to confirm the selected option
3. Left/Right Navigation button
Press to switch among different options and pages
4. Up/Down Navigation button
Press to switch among different options
5. Back/Cancel button
Press to cancel function and go back to previous screen
6. Multi-function button:
Press to start the race and record

7. -Mini USB Port
-Reset button
For Charging device
For Data download to PC
For Firmware Upgrade
Reset Device
8. External GPS Antenna Jack
For connecting optional External GPS Antenna with MCX plug
C. Icon definition
圖示
描述
圖示
描述
GNSS is not fixed
Internal antenna
Battery full
GNSS is 2D fix
Internal antenna
Battery sufficient
GNSS is 3D fix
Internal antenna
Low battery ( less than 15% battery
time) (Steady ON red color)
GNSS is not fixed
external antenna
Low battery (less than 5% battery time)
GNSS is 2D fix
external antenna
BLE ON(No Connection)
BLE ON(Connected)
GNSS is 3D fix
external antenna
WiFi ON(No Connection)
16:20
GNSS Time
WiFi ON(Connected)

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D. LED Signal definition
LED
Red
1. When the memory ≤98% or fail to read/write memory, the Red LED
will steady ON.
2. When the battery is in low status below 15%, Red LED will steady ON.
Orange
1. When device is under charging mode, the Orange LED will be steady
ON. After device battery is fully charged, the Green LED will be
steady ON.
2. When updating firmware, the Orange LED will be steady ON
Green
1. When device is under Screen power saving mode (backlight off),
Green LED will steady ON.
2. When the device battery is fully charged, the Green LED will be
steady ON.
E. Safety Notice
Note: Please read this section carefully before start operating the 8000GT.
 Keep the 8000GT far from heat or high temperature environment. We recommend not to expose your
8000GT in temperature higher than 145℉/60℃to prevent the device from overheating, exploding or
melting itself.
 When car interior temperature is too high, is likely to result in product failure or damage. When device is not
in use or driver leaves the car, we suggest disconnecting the device and place in the car glove box.
 To reduce the risk of fire or shock hazard, do not expose this product to rain or moisture.
 Do not mount the devices in a place where the driver or passengers may receive injury during vehicle
operation or collision. For your safety, take care to route all cables away from shifters, pedals, accessory
controls and mechanisms
 The manufacturer assumes no responsibility for any damages and loss resulting from the use of this manual,
or from deletion of data as a result of malfunction, dead battery, or from misuse of the product in any way.
 Please clean the unit with a dry and clean soft cloth. Do not use harsh cleaning solvents, chemicals, or strong
detergents.
 Do not attempt to open 8000GT by yourself. Unauthorized hacking may damage the unit, and void your

warranty.
CAUTION
RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECTTYPE. DISPOSE OF USED BATTERIES ACCORDING
TO THE INSTRUCTIONS
F.Charging 8000GT
Please charge the battery fully before the first time use.
8000GT comes with a built-in rechargeable Li-Ion battery. To charge it connect the provided (or compatible) USB
Type C cable at the back of the device and plug it into a suitable charger (500mA capable). Charging time is 5
hours typically with Power OFF mode and 10 hours with Power On mode. A fully charged battery will last about
10 hours operation.
Note: To avoid damage to the battery, please do not overcharge the battery for more than 10 hours. The battery
will stop charging if it’s overheated for safety reason.
G. Device bracket mounting
There are two 1/4 inches screw holes on LT-8000GT. Qstarz offers the optional mounting
accessories for car and motorcycle. You can use the optional Qstarz quick mount/vehicle holder, or
find the standard 1/4 inches screw holders for your LT-8000GT.
Step1: Screw the quick mount on the top or bottom of your LT-8000GT.
Step2: Lock up the car holder or bike holder to the quick mount.
Step3: Place t he car sucking holder on the window and lock up.
Quick mount is easy to install for your LT-8000GT

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How to get better GPS accuracy with 8000GT
 8000GT is for outdoor use, it should be used in open area environments without shelter of tall building or trees
to enable faster satellite lock and provide better positioning accuracy.
 If you are using the 8000GT for the first time or you haven’t been use it for a while, it will need to be left for 10-
15 minutes to make the GPS signal accurate and steady.
Install external GPS antenna (Optional Accessory)
8000GT has built-in GPS antenna, you also can increase the GPS precision and reception quality with
external GPS antenna. Open the Rubber cover and plug in the GPS antenna connector to antenna jack on
the back of 8000GT. Make sure to mount the external GPS antenna on the car roof or any metallic surface.
A. MCX Plug for connecting to 8000GT
B. GPS Antenna for receiving GPS Signal. Magnet design can stick to car roof or metallic surface.

About the GPS
The GPS is operated by the government of United States, which is solely responsible for its accuracy and
maintenance. The accuracy of location data can be affected by adjustments to GPS satellites made by
United States government.
Quality of GPS signals may be affected by your location, building, natural obstacles, and weather
conditions. The GPS module should only be used outdoors to allow reception of GPS signals.
The GPS position is for user reference only, you should never rely solely on location data from the GPS
module for positioning.
Data backup
Regularly back up and format the memory of the device would keep your device health
and work as usual.
* Please BACKUP your data BEFORE format the memory of your LT-8000GT, otherwise it
might cause the data loss or damage.
I. Setup 8000GT for First Time
To power on your unit, press and hold the power button for 3 seconds until it turns on, when you turn on the
8000GT for the first time, you will be required to set up the following information:
 Language (English, Chinese, Japanese)
 Units of Measurement (Metric or Imperial)
 Time zone and Time format
After the setup is completed, you will see the Main Menu screen. Select one of 8 operation Modes to execute
required function.
1. Drag Race Mode
2. Circuit Race Mode
3. GPS Logger Mode
4. History Mode
5. Application Mode

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6. GNSS mode
7. Wireless Mode
8. Setting Mode
I-1. Drag Race mode
The Drag race mode is to measure your vehicle’s acceleration and braking’s performance, 4 pre-defined Profiles
(1/4 mile, Speed, Distance, 0-Speed-0) are stored in 8000GT.
Comparison setting: You can set the lap time to compare with the last lap or the best lap.
Display settings: Four display modes can be set, speed, speed+distance, speed+time, distance+time.

Lap Time Freeze : You can set the time for displaying the single lap result screen. You can set 10 seconds, 30 seconds or
manually exit the result screen.
Select the performance test you want to run, press Next button to enter setup screen.
1/4 mile: Starting from a stationary state, it is timed according to various distances. The distance conditions are
60ft, 330ft, 660ft, 1000ft and 1/4mile), and the comparison circle (best/previous circle) .
Speed mode: You can set a primary speed condition and three secondary speed range. The speed condition can
set the starting speed and ending speed. The speed interval of the secondary condition cannot be larger than the
speed interval of the primary condition.
Distance mode: You can set a primary distance condition and three secondary distance range, you can set the

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start speed (start timing when the start speed is reached) and the set ending distance. The distance interval of
the secondary condition cannot be greater than the distance interval of the primary condition.
0-Speed-0 mode: After setting the target speed, you can start timing from a static state and record the maximum
speed information at the same time.
Press Start button to start perform your run.
Once the screen show ”Ready” the timer will automatically start when it detects the car starts moving, and stops it
when your car is passing Profile condition.
If it is determined after saving that any secondary range setting is not between the primary condition, the items
to be modified in the setting page will be displayed in red . Only after the setting is correct can you press ●=start
to start the time measurement.

*Do not to run these tests on the public roads!
I-2. Circuit Race mode
The circuit race mode is for measuring lap times and analyzing laps, there are 4 pre-defined and 1 Custom Profiles in
Circuit race mode.
Select one of the profiles you want to test, press Next button. 8000GT will automatically detect and display the nearby
start/finish line coordinates of the track based on the track list database within 8000GT.
Select the track you want to test and press Next button. You can set Compare、Beacon Width、Lap Time Freeze、Info
Option and Min Lap Time.
 Practice profile:
This profile is suitable for track day practice session; it will compare your current lap time with the last lap time by
default and can set the min lap time (filter the wrong lap time generated when waiting at the start line)

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 Prediction profile:
Predictive Lap Timing function is featured to predict the lap time which is about to complete. It can predict you will
be getting faster or slower than the previous best lap. It’s suitable for pursuit breaking your best lap time.
At the same time, you can set the time display mode in the second column (±Compare, Lap time, Rolling Time) and
the Bar Level in the third column.
At the same time, you can set the time display mode (± time difference, predicted lap time, rolling time) in the
second column and the maximum time difference scale to be displayed on the bar chart in the third column.

 Race profile:
This profile is suitable for race day; it will compare your current lap time with the best lap time by default.
 Challenge profile:
Challenge profile allows you to set a lap time as a target to compare and challenge it.
 Custom profile:
User can custom your preference by selecting the comparison lap (best or last) and Info option display for lap timing.
Press Start button, when the screen displays READY, the 8000GT will start to count automatically after detecting the
movement of the car.

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Comparison setting: You can set the lap time to compare with the last lap or the best lap.
Lap Time Freeze : You can set the time for displaying the single lap result screen. You can set 10 seconds, 30 seconds or
manually exit the result screen.
Info Option: You can set the field information display content at the top of the time measurement screen. There are six
types of information to choose from.
Minimum lap time: Set the minimum lap time. Lap times shorter than this set time will be ignored and will not become
the best lap or be used as a comparison lap.

Set Session time: Set the session time and display the remaining time of the session on the time measurement screen.
If you don’t see the track you need, you can download the latest tracks from Qstarz website
( http://racing.qstarz.com/Share.html ) or select the track by the following menu. (See below guide: How to Setup
Start/Finish and Split lines?)
Simple Lap: Just press the Start button to race and 8000GT will set up the Start/Finish line automatically
(Speed is greater than the start timer speed).

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Load User Track: Load the track which you created before in this device.
Load Shared Track: Load the track which you exported from QRacing software.
Create Closed Track: You can create Start/Finish lines and Splits. Start/Finish line is at the same place.
Create Open Track: You can create Start line, Splits and Finish line. Start and Finish line are not at the same
place.
You can load the beacon from User Track you previously created. Or you can load it from Shared Track you exported
from QRacing or downloaded from website.
*Load User Track:
*Load Shared Track:
Note1: The vehicle must be moving for better precision when setting the Start/Finish line.
Note2: In some cases it may not be feasible or safe to add Start/Finish Splits line while driving. Users can use
alternative way by QRacing software to edit the Start/Finish and Split lines, then export them to
8000GT for race (Please see K-2 Edit Beacon).

How to setup Start/Finish and Split lines?
Simple Lap: You can set the start timer speed to set the start/end line. When the speed is greater than the start
timer speed (30 Km/h), this position will be set as the start/end line.
Press button to complete the start/end line setting.
Create Closed/Open Track: By driving slowly (at least 30km/h) on the track, press button when you are on
the spot that you want to mark as Start/Finish line.
After you have created the Start/Finish line, press button to mark the split line.
(Note: Max 25 split lines can be added for each track)
Press button to finish creating the Start/Finish and Split lines. The Track will be saved automatically in the
memory of 8000GT\C_BEACON\USER folder once finished; you can re-load it later by Load User Track or
share it with other users.

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Beacon Width: Beacon is commonly referred to as the virtual start/finish or split lines. The default beacon
width is set to 50 meters (25m from each side of the vehicle) and the Beacon line is placed in a straight angle to
your current bearing (see below picture), you may adjust the beacon width according to your track width.
Drag real-time display screen
Press Start button Once the screen show ”Ready” the timer will automatically start when it detects that the
car starts moving.
If you were going faster than comparison lap (best or last), the lap time will be shown in Green background. Or if
you were going slower, and the run time will be shown in Red background. The timing difference between your
current lap and your best or last lap will be shown at the bottom of the screen. You can press the button to
switch the field option on the top right corner of screen or press Up/Down button to change timing display style.
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