GoPass AVL-901C Assembly instructions

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Table of Contents
I. Working Directions .................................................................2
II. System Introduction..............................................................3
III. Wiring and Installation ........................................................ 5
1. Product Parts List................................................................5
2. Panel Description ................................................................7
3. Precaution before Installation ..............................................8
4. Installation .........................................................................9
5. Power Charging ................................................................ 12
6. Description of the LED Indicators....................................... 13
7. Inspection Items after Installation ..................................... 13
IV. Operating Instructions........................................................ 14
1. Geo-fence (Park) Function................................................. 14
2. SOS Emergency Help Function .......................................... 14
3. Sound Monitoring Function................................................ 14
4. Conversation Function....................................................... 14
5. Setting the Volume & Ring ................................................ 15
6. Position Report Function ................................................... 15
7. Tracking Function.............................................................. 15
8. Password ......................................................................... 15
V. Hardware Specifications....................................................... 16
VI. Troubleshooting..................................................................17

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I. Working Directions
Thank you for your purchase of AVL-901(C) GPS/ GPRS Locator Tracker. In order
to realize the full functions of this product, please read this manual carefully before
starting to use the product.
1. This product can only be maintained and repaired by qualified professional
service personnel. If you detach this product for maintenance or repair, your
warranty will be invalidated.
2. When connecting the other devices, read carefullytheir instruction manuals,
so as to carry out correct installation; do not connect incompatible device.
3. Please use genuine original parts and qualified batteries and peripheral
equipments, so as to avoid damage to this product.
4. As this product is a high-tech product, please read carefully this manual before
starting to use the product, so as to avoid inappropriate operation.
5. Drivers should not operate this product while driving a vehicle, thereby,
affecting safe driving.
6. This product can work properly only when GSM communication is in good
condition.
7. Please reduce electromagnetic interference to the product; and use it properly.
8. GPS communication is liable to be affected by environmentalshielding; may
fail to carry out positioning during certain circumstances. It will resume the
positioning function as soon as it leaves the shielding environment.This is
normal. Please do not worry when encountering such problem.
9. The position report and the relevant data provided by this product is for
reference only.
10. We suggest replacing the stand-bybattery each year in order to ensure its
normal function.
11. Each signal sent out from the system will be confirmed for successful
transmission in the base station of the mobile operator. However, if system
stoppage occurs or if the mobile telephone is preset to a switch off state by the
customer, it cannot ensure successful transmission.
12. For safety reason, do not tell the other people your AVL-901(C) mobile number,
without taking precautions. Otherwise, your privacy may be compromised
along with other safety problem.

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II. System Introduction
AVL-901(C) is a high-tech product through cooperation with mobile operators.
It combines GPS Global Positioning System and GSM/GPRS communication
system, which can clearly inform you the position & situation of your car.
GPS is the abbreviation for Global Positioning System, which is a product of
the cold war between USA and USSR. During the cold war, USAarranged 24
position location satellites around the earth orbit, in order to measure the space
coordinate and time of the measured objects through the triangular location
method. These satellites were initiallyfor military purpose. Then, they were
allowed to be used for civilian purpose. Their locating precision can be kept within
10 to 15 meters.
GSM is the second digital mobile communicationsystem (GPRS, second and
fifth digital mobile communication system), and at present it is the mobile
communication system that has the largest coverage and owns the most number
of users. This product combines GPS and GSM/GPRS technologies together. It
uses GPS system to locate your car, and sends the position/ situation report back
to you via GSM/GPRS communication system.
With a delicate microphone, you can monitor the present situation in your car
from a faraway place. You can use the telephone remote control function to set
monitoring mode, which will report the situation of your car to you periodically.

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Following are the function descriptions for the AVL-901(C) products.
1. GPS Position Tracking Function
With this function, the vehicle owner will be able to know the geographic
coordinates, speed, direction, and other related information of the car anytime in
any place. The report methods can be via SMS short message service, or via
GPRS. You can also select a one time report or continuous report (tracking
function).
2. In-Car Monitoring Function
You can monitor the situation inside the vehicle by make a call (after 5 rings) to
the unit; or by sending a SMS message (#100) to the unit; it will return phone call
automaticallyfor monitoring action.
3. Geo-fence Park Function
When park your car or leave your valuable asset at a certain place, you can
press "PARK" button to guard it. AVL-901(C) will send a SMS message to the
preset mobile phone number, when someone moves the car or the asset without
permission over the preset distance - for example, 200 meters.
4. SOS Emergency Help Call Function
When the driver of the vehicle presses the SOS button, AVL-901(C) will
immediatelysend a SMS message and make phone call to the preset phone
numbers.When receive such kind of phone call, one can immediatelystart the
monitoring or conversation function, so as to know more precisely what
happened in the car.
5. Bi-Direction Phone Conversation Function
You can make phone calls to AVL-901(C) on the vehicle from a remote place for
bi-direction phone conversation with the driver. When there is an incoming call,
there will be a voice prompt. At this time, the driver can press the "Pick-Up/
Hang-Up" button to start the conversation. AVL-901(C) can also dial out to the 2
preset phone numbers for two-way phone conversation.
6. Car Navigation Function
The GPS data can be output and used by Notebook/ PDAfor real-time car
navigation.

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III. Wiring and Installation
1. Product Parts List
AVL Unit + GPRSAntenna GPSAntenna
Control Keypad & SOS Cable Speaker
Microphone Car Charging Cable

Quick Start Guide & Installation CD RS232-USB Cable (optional)
GPRS Antenna Back-up Battery (optional)
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2. Panel Description
Car Battery
Charging Cable
Socket for
Back-up Battery
Connector for
GPS Antenna
Power Switch
Connector for
GPRS/GSM Antenna
Socket for
Speaker
Socket for
Microphone
Socket for Keypad
& SOS Cable
Quick Dial 2
GPRS LED
GPS LED
Quick Dial1
Power LED
Answer/
Hang up
Park LED
On/ Off Switch for
Park Function

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3. Precaution before Installation
Check if all the parts are included.
Prepare a SIM card for GSM communication. Use some other mobile phone to
confirm that the PIN code has not been set, and that it can dial out and receive
telephone calls without problem.
Before install the SIM card, make sure to cut off power from the AVL unit. The
correct installation method is to push the tray completely into the AVL unit, until
you feel it is hooked by something.
Find a suitable place inside the car for installing the unit.
Check if all the wiring has been connected correctly; then connect the AVL unit
to the power source.
It takes around over 20 minutes for the very fist time positioning.
The factory default password is “8888”.

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4. Installation
Step 1: Install GPRS Antenna
* Connect the GPRSAntenna to the unit.
* Fasten the connection by turning the screw in the bottom.
Please do not swing round the antenna itself.
Step 2: Install SIM Card
1). Unscrew and remove the back cover of your locator.
2). Push the holder top upward, as illustrated, to loose it.
3). Pull the holder top up.

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4). Insert the SIM card by sliding it into the card holder slot, with the chip
module facing to the connectors on PCB, as shown in the picture.
5). Flip down the holder top.
6). Push the holder top leftward, and let it snap in completely.
7). Put back the bottom cover and screw it up.
※Make sure to turn off the power before install the SIM card.
※Make sure to deactivate the PIN code, so that the SIM card can operate without
PIN protection.
※Before install the SIM card to the GPS Tracker, please use a mobile phone to
make sure the SIM card can make & receive phone calls without problem.
※Before install the SIM card to the GPS Tracker, please use a mobile phone to
empty the SMS storage of the SIM card.

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Step 3: Connect GPS Antenna
GPS antenna is used to receive satellite signals in the sky. It should be
positioned at a place where it will have an unobstructed view of the sky.
The ideal location is top of the dashboard or close to the rear window of the
car.
GPS antenna can pick up signals through glass and plastic, but will not “see
the sky”through metal or other conductive surfaces. To avoid distractions of
GPS signal, make sure the antenna is not covered or shielded by any object
containing metal, such as the metallic windshield.
If your car is with metallic windshield, please cut a hole on the windshield
above the place where you put the GPS antenna, so that the antenna can
receive the GPS signals.
Step 4: Power On
ConnectAVL-901(C) to the power source, After power on, red LED (Power)
will light constantly; GPS LED will dark steady orange, or flashing orange
(after get a position fix). The device will be ready to work in about 30-45
seconds after turn on the power. To turn off the unit, please just slide the
power switch to “OFF”.
If AVL-901(C) is connected to the optional back-up battery, the unit will be
always ON; power switch will be of no function.
Step 5: Check if GPS can works properly
Method：When GPS has got position fixed, the GPS LED will turn from
constant glow to “blinking light”. Check if the GPS LED has turned to
“blinking light”.

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5. Power Charging
* This should be done bythe professional technician.
The AVL unit should be connected to power source, after all the wiring work has been
completed and checked.
GPS antenna is used to receive satellite signals in the sky. It should be fixed to face
the sky; and should not be covered or shielded by any object containing metal, such as
the metallic windshield.
Microphone should be fixed on top of the driver’s seat or around the steering wheel.
Speakers should be kept away from the microphone, and its connecting wire should
not be entangled with the other wires.
SOS button should be installed in a hidden place to avoid being touched accidentally.
Wiring connections must be firm and reliable; and the joints should be wrapped with
insulating tape tightly.
After the microphone & speaker have been connected and tested, the joints should be
wrapped with insulating tape tightly, so that they will not get loose.
The unused electrical wire should be properly insulated.
4000mA back-up battery can last for 36 hours. For longer operation time, please use a
back-up battery with larger capacity.

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6. Description of the LED Indicators
7. Inspection Items after Installation
After connected to the power source, the Red LED should be “constant glow”.
The GREEN LED for GSM/GPRS state will “flash” when sending/receiving data or
phone call.
The phone numbers for PARK & SOS have been changed as per your settings.
When press SOS button for 2-3 seconds, AVL-901(C) can send out the first SMS
message for emergency help.
Make phone call to the pre-set phone numbers, and make sure both sides can have a
phone conversation clearly.
Turn off car engine, press “PARK”button, to activate Park/ Geo-fence function.
Go to an open-air place, and check if the Orange LED can change from steady orange
to flash orange light. The orange LED will flash once per second, when the unit has got
a position fix successfully.
Send a SMS command code to AVL-901(C), asking it to report its current position.
Complete the installation, and restore the interior of the car.
PARK
(BLUE LED)
POWER
（RED LED）
GPS STATUS
（ORANGE LED）
GSM/GPRS
（GREEN LED）
---
---
GPS is on, and
position is fixed
GSM is
sending/receiving data
or phone call
Flash
Geo-fence
function has
been activated
normal
---
GSM is on,
but not yet connected
to the network
Constant
Glow
Go-fence
function not
yet activated
in trouble or
no power
GPS is not fit
GSM is in the standby
mode; or SIM Card was
installed improperly;
or in trouble
Constant
Dark

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IV. Operating Instructions
1. Geo-fence (Park) Function
Slide the Park switch to the left to activate Geo-fence function, the Blue LED
will be “constant glow”. AVL-901(C) will send a SMS alert message to the
preset phone numbers, if the car is moved beyond the preset distance range.
Slide the Park switch back to the right, the Blue LED will shut off; and
Geo-fence (Park) function will be cut off. The accuracy of GPS positioning is
liable to be affected by time, weather, & other environmental factors. It is
suggested to set the geo-fence range over 200 meters.
2. SOS Emergency Help Function
When SOS button is pressed for 2-3 seconds, the device will send out a SMS
message for emergencyhelp, one time each 3 minutes.The person(s) who
receive the message can activate the voice monitoring function, and offer
assistance in time. The phone numbers list can be set by the users.
3. Sound Monitoring Function
If you want to know what is happening inside the car, you can send a SMS
command code 100#Password to the unit to monitor the situation in the car,
LIVE & REAL-TIME.
4. Conversation Function
Call In: One can make phone call to AVL-901(C) by simply dialing the SIM card
number. To receive the incoming phone call, one should press the
“Pick-Up/ Hang-Up”button to start the phone conversation.
Call Out: AVL-901(C) has two buttons for speed dial; you can preset two sets of
phone numbers of those you want to talk with. After the setting, you
can make phone call to the preset phone numbers by pressing down
either of the two speed dial buttons, “Dial 1”or “Dial 2”.

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5. Setting the Volume & Ring
Volume: Press “Dial 1”for 3-5 seconds, the device will ring up. By then, you
can press Dial 1(+) or Dial 2(-) to adjust volume up/ down; and
press “Pick-Up/ Hang-Up” button to confirm the setting.
Ringing: Press “Dial 2”for 3-5 seconds, the unit will ring up. By then, you can
press Dial 1(+) or Dial 2(-) to select the ring sound; and press “Pick-
Up/ Hang-Up” button to confirm the setting.
6. Position Report Function
No matter where you are, when you want to know the position of your vehicle,
send a SMS message “111#Password”to AVL-901(C); it will report its location
back to you by SMS, or GPRS.
7. Tracking Function
Tracking report function can be turned on or off according to the requirements of
the user. There are 2 reporting methods: a). Internet real-time tracking via
GPRS; and b). SMS message report.
Note: Tracking function will continually report vehicle position until it is turned off.
8. Password
Password is the key to operate AVL-901(C) GPS Tracker. It is a 4-digit data.
The default password is “8888”. Be sure to change the password after the
installation, and keep it firmly in mind.
Note: In order to protect your privacy, do not tell others the password, unless it is necessary.
Please change the password, if it has been known by the persons who you do not want
them to access the data.

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V. Hardware Specifications
GSM850: TX824-849MHz, RX 869-894MHz
Dimensions
114x76x30(mm)
GSM/GPRS Module
Siemens TC65
Bandwidth
EGSM900: TX880-915MHz, RX 925-960MHz
DCS1800: TX 1710-1785MHz, RX 1805-1880MHz
GSM1900: TX1850-1910MHz, RX 1930-1990MHz
Maximum
RF Output Power
EGSM900, GSM850: 33 dBm(2W)
GSM1800, GSM1900: 30 dBm(1W)
Resistance
50Ω
Transmission Speed
Circuit switched 4.8/9.6 kbps
Sensitivity
-161 dBm
Frequency
L1, 1575.42MHZ
Channels
48
Position Accuracy
10 meters CEP without SA
Speed Accuracy
0.1 meters/second, without SA
Coordinate System
WGS-84
Hot Start
< 8 Seconds
Warm Start
< 38 Seconds
Cold Start
< 60 Seconds
Height
18000 meters（60000 feet）max.
Speed
515 meters / second（1000 knots）max.
Acceleration
4g max.
Working Voltage
12 to 24 VDC
Power Consumption
in stand-by mode
1W (power save mode)
Power Consumption
in working mode
2W (working mode)
Housing
Metal
Operation Temperature
-20°C to +70°C
Storage Temperature
-30°C to +80°C
Humidity
0~95%, non-condensing

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VI. Troubleshooting
1. After AVL-901(C) installed, why there is no response?
Check the polarity of power connection to see if a wrong polarity connected.
Check the connection of back-up battery to see if it is properly installed.
Check the power is on or not.
2. Why does GSM fail to communicate?
Check if the SIM card has been activated
Check whether the SIM car has password
Check if the SIM card is correctly placed.
Make sure the SIM card does support GPRS function.
Make sure to cut off power, before pulling out the SIM card.
If the vehicle is parked in a place where the GSM signal is weak.
GSM base station of the mobile operator is crashing.
Whether this SIM card is suspended (such as forget to pay the bill…)
3. Why GPS can not get a position fix?
Check if GPS antenna is correctly installed; if the GPS antenna is put in a proper
place, faces the open air.
Make sure there is not be any metal shield, such as windshield heat insulation paper
with metallic content, on top of the GPS antenna - which may block the reception of
GPS signal.
Do not park your vehicle under shielding or under a building.
If necessary, put the GPS antenna on top of the car roof temporarily.
4. Why does GPS positioning take such a long time?
The time requires to get a position fix can be affected by many factors, such as the
weather, distribution of clouds, roadside trees, elevated roads, nearby high buildings,
heat insulating papers containing metal elements, and even the covering of the hands,
may affect the reception effect of satellite signals. Besides, positioning the vehicle in an
idle state will take shorter time than positioning it in motion state.

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5. Does the weather affect GPS operation?
GPS system is able to overcome weather problem in its initial design. GPS satellite
positioning signals consist of short waves; the transmission of short waves will not be
affected by weather conditions. GPS signals may produce error factors during
transmission, such as solar wind, earth rotation, variation of aerosphere density, building
reflection, etc. All of which may cause deviations to GPS short wave affect signals. But
weather factors will not affect the normal function of GPS.
6. Why the speaker has not any sound?
Check if the power/ signal cable of the speaker is correctly connected, or if the
connection gets loose.
Adjust the volume of the speaker
7. Why can not it monitor the sound real-time?
Check the microphone connector whether it was connected properly or not.
Check the memory for SMS messages in the SIM card, to see if it is full.
Can not receive GSM signal in the place where you locate.
8. There is an echo during phone conversation.
Adjust the volume of the speaker.
Replace speaker & microphone; do not put them in the nearby.
9. No warning message when the car is moved.
Out of power.
Park button is off.
The car is moved within the restricted area.