TK604 user manual
36
B) Power cord connection
The MDVR USES dc power input, and the normal working range of input voltage is 6V~ 36V.
5.4.2
Alarm input connection
The device has 9 sets of alarm input interfaces. The detection of alarm input is a level test, which can be used
in various vehicles, such as braking, steering, etc .As shown in the diagram below, the device can detect the high
level of the brake when the brake pedal is under, otherwise it will detect a low level
a
）
The alarm output is the output of the level, the driving capacity is 200MA. If the power is to drive the larger
device, the external relay must be connected.
b) SD card and SIM card installation
SD card is installed in the position of SD1 and SD2 in the figure above;
The SIM card is installed in the position of SIM in the figure above.
5.5 Equipment upgrade
A) First, COPY all the upgrade files to the SD card root. The upgrade file contains applications, file systems, and
UBOOT;
B) Insert the SD card with the upgrade file to boot;
C) Enter the system menu "system information" to view the application, files system, boot program, kernel, and
single chip version number;
D) The version number is different from the current version, which does not need to be selected in the equipment
management, and the equipment will be automatically carried out;
E) Do not use power without power during the upgrade process. Do not do any operation on the equipment.
