RearviewSafety RVS-MDVR - Manual (Page 25)

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alarm preparation record time (range 0-60s) and the alarm record delay time (range 30-900s); the
alarm output time (range 5-240s), the alarm output setting can be dependent on the actual external
alarm equipment.
Second, the installation of corresponding external alarm input devices is needed, like emergency
switch button, switch door magnetic door, sudden braking sensor and other sensors. The alarm
settings of this device include several types as follows:
Level input
MDVR REAR PANEL ALARM INTERFACE
Figure 4-2
A: SENSORS INPUT ALARMS. SYSTEM MENU-VEHICLE INFO-SENSOR SETUP
In the menu shown in Figure 3-20, choose high or low trigger level, and switch on recording; This menu
corresponds to the host s six external alarm input SENSOR IN , and the external should connect
to the corresponding sensing switch equipments, like magnetic door, emergency switch button,
turning lamp switch, brake pedals(shown in Figure 2-13) and etc. The rough connection is as shown
in Figure 4-2.
B: OVERSPEED ALARM SETUP. SYSTEM MENU-VEHICLE INFO-SPEED SETUP
If a vehicle adopts GPS to acquire speed, as shown in Figure 3-22, the GPS signal should be good,
then the threshold of overspeed alarm should be set, like 100KM/H, namely the maximum speed limit.
Then switch on enabling and recording, when vehicle s speed exceeds 100KM/H, the vehicle will
output an alarm and record simultaneously.
If a vehicle chooses to acquire speed from itself, the connection to the speed pulse sensors is
necessary, which is used to calculate the speed ratio (the coefficient = pulse/speed). Connect the
pulse sensor to the two lines of the vehicle ports-SPEED-A and SPEED-B. The speed ratio is
determined according to the set speed and the obtained pulse during the course of vehicle s running,
so the operations are more complex. A simplified connection is shown as Figure 4-3.
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Pulse sensor
C:G-SENSOR ALARM RECORDING. -- G-SENSOR
As shown in Figure 3-21, G-SENSOR can be understood as a three-dimensional X, Y, Z coordinate axis,
which demonstrates vehicle s three status sets respectively, up and down, left and right, back and
forth.Also up-and-down bumps, speed-up, sudden braking, side tumbling, sharp turns, and so on
during the course of vehicle s running can be shown from X, Y, Z axis.
A related value of the threshold needs setup. After installation to vehicles, firstly a calibration is required,
namely to reset X/Y/Z parameters; then during the operation measure sudden braking accelerate, range
value of up-and-down bumps, variation value of left-and-right sharp turn, etc., so as to determine which
axis has big changes, and these operational status will display and change real time. With threshold set
and record on, the device will start recording when vehicles run over the threshold limit.
D: MOTION DETECTION ALARM RECORD.
-TOOLS-MOTION DETECTION
As shown in Figure 3-29, turn on enabling switch, set detection sensitivity from "high, medium and low"
according to requirements, generally set to "medium". Next the most important step is to set motion
detection area by diagonal setup, please kindly refer to Figure 3-30, there is no record on and off
menu here, and the default setting is to turn on with enabling, so as long as you set motion detection
area and set record mode for alarm record, the host will trigger recording and generate alarm record
files when move occurs in the image. (Note: all settings can only take effect by press the latter saving).
SYSTEM MENU-VEHICLE INFO
SYSTEM MENU
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Figure 4-3
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