VEHICLE SAFETY
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San Diego, CA 92102 USA
P: 1 619 263 4164
F: 1 619 263 6814
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Malaga WA 6090 Australia
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Sensor Interfaces and Configuration
CAN-Bus Communication
The PreView® Side Defender™ radar has one CAN interface as specified in ISO
11898-2 (SAE J1939) with a transmission rate of 250 KBits/second. The sensor
communicates with the PreView® In-cab LED display using this interface.
CAN-Bus Inputs
If the truck/bus speed is available via CAN-bus message, the Side Defender™
Radar can support certain J1939 vehicle speed messages (contact PRECO®
Electronics for more information).
CAN-Bus Outputs
The Side Defender™ can provide object detection information and alerts as CAN-
bus messages. This information can include distance, angle, velocity and signal
strength of detected objects. Telematics or data logging of detection events can
be supported via these CAN-bus outputs.
Turn Signal Input
The Side Defender™ radar requires a turn signal input for proper in-cab display
operation. When the turn signal is active, the display audible alert will sound
once when an object is detected. Refer to the system wiring diagram (Figure 4)
for connection information.
Alert Output
The Side Defender™ radar supports an alarm output signal that can be used to
provide additional operator alerts.
Table 1.
Operator Display Description
Item
Description
Status LED*
Illuminates green after power is applied to the system. Turns off
anytime the detection LED is illuminated.
Detection LED*
Illuminates to alert operator to the presence of an object
Light Sensor*
Measures ambient light conditions allowing for Status and Detection
LEDs’ brightness to automatically adjust
Display Buzzer*
Sounds an audible tone to alert operator of obstacles
*Locations of LEDs and buzzer are different for left side kit.
