Topicon MDT740 User manual

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1
Quick Start Guide
Product introduction
MDT740 has optional features (wifi, BT, GPS, 2G/3G/4G,LoRa, back camera, front camera, RFID,
lightsensor, gyroscope, accelerometer)
Highlights:
4G – pls insert the SIM card when the device if complete off
front camera – there are 6 IR LED around the camera. if you enable the flash function in front camera,
then you will see the IR LED is on. In this case, the picture will be in black and white
On/off button
SD card slot, SIM card slot and
reset button
Screw hole is available if you
want to lock the cover
Pls cover it well in order to
ensure the waterproof
performance
Micro usb for connecting to PC or charging
Pls cover it well in order to ensure the waterproof
performance
Pls move upward to open the
cover, you will hear “click”
sound, it is normal
Pls move right to open the
cover, you will hear “click”
sound, it is normal

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recording, recording taping, or information and retrieval systems) without the written permission of the copyright owner
2
Direction of SIM card and SD card

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3
Interface
1. There is TTL serial port (Tx/RX) or OTG from 10 pin usb connector
pls see the above schematics of our USB connector in our PND, it is 10 pin connector.
Pin 4 and 6 can be used for USB or TTL serial interface (Rx/Tx) and Pin 8 is ID pin which is used to
distinguish for USB or serial interface.
if it is connected to GND, then the pin 4 and 6 will be Rx/Tx interface.
if it is connected to Vcc, then the pin 4 and 6 will be D- and D+.
10pin usb connector

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4
2. There are Rs232 interface and OTG from cradle.
Highlights: OTG port from device (10pin usb connector) and cradle are sharing same pins. Only 1 OTG
interface can be used.
Pin 1 – Ignition (Green), it can be wake up the device. see the software section for more details.
Pin 2 – NOT connected
Pin 3 – RTS (Orange)
Pin 4 – car battery input (12-28V) (Red)
Pin 5 – CTS (yellow)
Pin 6 – TXD (purple)
Pin 7 – RXD (White)
Pin 8 – GND (grey)
Pin 9 – GND (black)
Pin 10 – NOT connected
Pin 11 – NOT connected
Pin 12 – 5V input (Pink)
Highlights: for RS232, it is master mode definition.
if you are using OTG with external device, you can only charge the device by 12V input.
This cable can be customized when you placed
order
For sample, it will be 12 pins connector, pls see
below or pins assignment
Usb connector for
OTG or charging

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recording, recording taping, or information and retrieval systems) without the written permission of the copyright owner
5
Removing the cradle cable (12pin molex connector) if you don’t want to use it.
1. you can find the rubber plug in our blackbox (see below picture).
2. open the cradle casing by screw driver
3. remove the 12pin molex cable from connector
4. put the rubber plug in the hole and close the cradle casing
Option for ignition control the power supply
If ignition is OFF, the power supply will cut. Customer uses their application to control the device to
power off or sleep mode.
If ignition is ON, there is power supply and able to charge the device. so, when the engine is ON, the
device will power on automatically.
If you want to try this feature, pls open the cradle. There are switch inside the cradle PCB. (only
production batch >1642)