User's Manual

Preco Electronics, Inc.

370-871-1B

Operator Display Description

The operator display provides the vehicle operator with both visual and audible indications of a

detected object. Range to the detected object is provided with five LED’s in a relative format

with each LED representing approximately 1/5

of the total range. The display unit also

contains a buzzer to provide an audible alert. The buzzer audible rate will increase as an

object becomes closer, providing the operator with another cue that an object is being

detected.

The operator display continuously monitors communication from the PreView

sensor and in

the event of a system failure or malfunction will notify the operator with a fault indication. See

Operator Display Error Indications below for further detail on fault messages.

A buzzer volume control switch is provided on the front panel of the display allowing the

vehicle operator the ability to adjust the buzzer volume to three different levels.

Item Description

Green Power ON Illuminates continuously after power is applied to the system. The

power ON LED will blink quickly if a system malfunction occurs.

Range

Indications

Illuminate to give operator a relative distance measurement to the closet

detected object. LED’s operate from the right to the left, with the closer

an object the more LED’s illuminated. Also used for error codes.

Buzzer Sounds audible tones to alert operator of obstacles. The buzzer tone

rate will increase as the vehicle gets closer to an object.

Volume Control

Switch

This momentary push button switch allows three different buzzer volume

levels to be selected as well as providing the capability of turning off the

buzzer.

Table 1. Operator Display Description

Object Detection Capability

The Standard PreView

system can detect most objects within the detection zone. However,

there are some instances where objects can go undetected. Obstacle size, shape, and

composition are all factors determining if, when and where an object is detected. The PreView

system operates by transmitting a pulse of very low power electromagnetic energy. Any

Volume Control

Button

Buzzer

Green Power On

Range Indications

5 Zones