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Standard PreView tm Operating Manual/Installation Guide
Product Description
The Standard PreView tm is a solid-state, pulsed radar object detection system designed to
alert vehicle operators to obstacles. The system detects both moving and stationary objects in
a pre-defined coverage area and reports the distance of the closest object via visual range
indicators and an audible signal to a vehicle operator. The PreView tm system is designed to
supplement other safety practices and is not to be the sole method of collision avoidance.
The Standard PreView tm consists of three major components: an environmentally sealed
sensor, an operator display mounted in the cab of the vehicle, and a recommended external
back up warning alarm. The Standard PreView tm system does not require cleaning and is not
effected by harsh weather conditions, including temperature extremes, rain, sleet, snow, or
fog.
The Standard PreView tm system comes in three different models:
SPV 2020
SPV 2015
SPV 2010
Twenty (20) foot detection range
Fifteen (15) foot detection range
Ten (10) foot detection range
Sensor/Antenna Description
The antenna assembly transmits and receives low power 5.8GHz radar signals. It then
processes the returned signals to determine if an object has reflected any energy back to the
sensor and reports this to the operator display. The sensor is designed to process and report
detections within ½ of a second allowing the vehicle operator to quickly respond to any object
Preco Electronics, Inc.
415 N. Maple Grove, Boise, ID 83704
(800) 453-1141
Copyright 2003
Page 1 of 10
370-894-1B
within the detection zone. All connections to a vehicle are accomplished at the sensor. Power
is obtained from the vehicle reverse lights and a relay contact is provided for operating a back
up alarm. The connection to the display unit is through a watertight connector eliminating any
potential problems with pin corrosion. Power to the operator display is provided through the
sensor interface to the display. The sensor RF output is pulse modulated so that it will not
interfere with similar devices.
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 the 15 and 20
foot models (SPV2015 and SPV2020) each LED represents approximately 1/5th of the total
range. In the 10 foot model (SPV2010) all of the LED’s illuminate whenever an object is
detected. The display unit also contains a buzzer to provide an audible alert that will increase
in rate 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 tm sensor and in
the event of a system failure or malfunction will notify the operator with a fault indication
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.
Buzzer
Volume Control
Button
Range Indications
5 Zones
Item
Green Power ON
Range
Indications
Buzzer
Volume Control
Switch
Preco Electronics, Inc.
Green Power On
Description
Illuminates continuously after power is applied to the system. The
power ON LED will blink quickly if a system malfunction occurs.
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.
Sounds audible tones to alert operator of obstacles. The buzzer tone
rate will increase as the vehicle gets closer to an object.
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.
415 N. Maple Grove, Boise, ID 83704
(800) 453-1141
Copyright 2003
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Table 1. Operator Display Description
Object Detection Capability
The Standard PreView tm 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
tm
system operates by transmitting a pulse of very low power electromagnetic energy. Any
energy that strikes an object reflects a certain amount of this energy back to the PreView tm
sensor. This returned energy is measured to determine an object’s distance.
The amount of energy returned is based on a few factors:
Size – a larger object usually reflects more energy than a smaller object.
Distance – the farther away an object is, the less energy is returned.
Composition – a metal object reflects more energy than a non-metallic object. A
metallic object at the edge of the zone will be detected, where a wood object may not.
Scattering – a solid object reflects more energy that a non-solid object such as wood,
gravel, bushes, etc.
Angle – an object perpendicular to the sensor will reflect more energy than an object at
an angle. See below for a detailed explanation.
Minimal reflection
Object surface
at A 45 degree angle to the
PreView™ sensor
PreView™
sensor
Transmitted
signal
Object in the PreView™ system
detection zone
Reflected
signal doesn’t return to the
PreView™ sensor
Full reflection
PreView™
sensor
Transmitted
signal
Reflected signal returns to the
PreView™ sensor
Object in the PreView™ system
detection zone
Object surface at a 90° degree angle to
the PreView™sensor
Figure 1. Object Reflection
Preco Electronics, Inc.
415 N. Maple Grove, Boise, ID 83704
(800) 453-1141
Copyright 2003
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SPECIFICATIONS (Typical)
Sensor:
Pulsed RF Transmitter at 5.8GHz.
Electronics: Solid state
Sealing:
Encapsulated to protect from dust, moisture and vibration.
Housing Material:
Radar sensor:
Operator display:
Dimensions:
Radar Sensor:
Operator display:
Weight:
Radar Sensor:
Operator display:
Mounting:
Radar Sensor:
Operator display:
Operating Temperature:
Polycarbonate radome, Aluminum back plate
Polycarbonate/ABS alloy
5.25” diameter x 1.25" deep (13.3cm x 3.2cm)
1.00”H x 2.25"W x 2.00"D (2.5cm x 5.7cm x 5.1cm)
1.75 lb. (0.8 kg)
0.25 lb. (0.11 kg)
Three 0.188" (4.8mm) diameter.
User dependent
All units: -40oF to +185oF (-40oC to +85oC)
ELECTRICAL SPECIFICATIONS
Input Voltage:
9 – 33 volts DC
Input current:
0.25 amp maximum.
Polarity:
Polarity protected
Power Connection: Two 18 AWG wires
Relay Output:
Normally Open, 1 amp maximum continuous
MAINTENANCE
Daily: Follow test and maintenance procedure.
REGULATORY COMPLIANCE
Compliant with FCC Part 15.249 (5725-5875MHz).
FCC ID:
OXZSTDPREVIEW
PRODUCT MANUFACTURED IN THE USA
FCC STATEMENT
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation.
Warning: Changes or modifications to this unit not expressly approved by the party
responsible for compliance could void the user’s authority to operate the equipment.
Preco Electronics, Inc.
415 N. Maple Grove, Boise, ID 83704
(800) 453-1141
Copyright 2003
Page 4 of 10
370-894-1B
INSTALLATION INSTRUCTIONS
Before you Start
Prior to installing the Standard PreView tm Object Detection System take time to familiarize
yourself with the installation instructions, theory of operation, and system components. Check
the contents of the shipping package and verify the following items are included:
Antenna Sensor (1)
Display Unit (1)
Interconnect Cable (1)
User Manual/Operating Instructions
Sensor Stainless Steel Mounting Hardware
(3) 1-1/4” x 10-24 Bolts
(3) Hex Locking Nuts
(3) Flat Washers
Display Mounting Hardware
Mounting Bracket
(2) #4-40 Lock Nuts
Sensor/Antenna Location
The PreView tm sensor mounting location is key to proper system operation. Ideally the sensor
should be mounted on the rear center of the vehicle at roughly 36” (1M) +/- 12” (0.3M) above
the ground. The sensor face should be perpendicular to the ground. Select a location that will
provide some protection from impact and debris while allowing an unobstructed view of the
target hazard area.
tm
Important!
Before the PreView system is permanently installed to the vehicle, verify that the selected
sensor mounting location provides a clear detection zone. Temporarily attach the sensor in
the proposed mounting location, apply power to the system, and verifying that nothing is being
detected.
Sensor/Antenna Mounting
1. Select the appropriate sensor mounting location.
2. The sensor must be mounted with the cable exit either on the bottom (preferred) or top.
3. Using the sensors’ mounting holes as a template, scribe position marks through the holes.
Drill 1/4” (6mm) holes centered at the marks.
4. Secure the sensor to the vehicle with the three supplied 10-24 UNC button head screws,
washers and nuts or equivalent. Apply a maximum torque of 22 inch pounds when securing
the sensor.
Sensor Power Connection
Locate the vehicles reverse light power wire and connect to the red wire on the sensor harness
using 18AWG wire. Connect the black wire of the sensor harness to vehicle ground.
Preco Electronics, Inc.
415 N. Maple Grove, Boise, ID 83704
(800) 453-1141
Copyright 2003
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370-894-1B
Back Up Alarm Electrical Connection
The PreView tm sensor provides a normally open relay contact that can be used to activate an
external back up alarm. The PreView tm system activates this relay output whenever an object
is detected. Connect the orange and white wires on the sensor harness as shown below if a
back up alarm is desired.
+12 VDC
PreView (Orange Wire)
PreView (White Wire)
+
-
Ground
NOTE:
The PreView tm sensor does not provide power for back up alarm use.
Display Unit Installation
The display unit should be mounted where the vehicle operator can easily view it while
backing. The ideal location for this is on the dash positioned by either windshield pillar. This
will allow the operator view of the display while also looking out one of the side mirrors.
The display unit harness should be taken into consideration when selecting a mounting
location for the display. Since the connection between the display and sensor harness is not
watertight, it should be routed in such a manner so it is not exposed to the outside
environment.
The PreView tm display unit comes equipped with a mounting bracket and hardware. If
desired, the display unit can be mounted to the display bracket with the supplied hardware.
This bracket can then be mounted in the vehicle cab as desired.
Cable Installation
The interconnect cable between the sensor and display is 25 feet (7.6M) in length. If the
distance between the sensor and display is greater than 25 feet, contact Preco for additional
cable extensions. Cables come in 5, 10, 15, and 25 lengths.
Routing of the cable should start at the sensor since the display end comes equipped with a
grommet to allow sealing the entry point into the cab. Allow for a small service loop in the
cable at the sensor and secure the cable every few feet (~1M) with tie wraps. When ready to
enter the cab, drill a 9/16” (14mm) hole and feed the display connector through. Once the
connector is through, the grommet can then be pulled into the hole until snug. The remaining
length of cable is then routed to the display unit and the connectors are latched together. Care
Preco Electronics, Inc.
415 N. Maple Grove, Boise, ID 83704
(800) 453-1141
Copyright 2003
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should be taken to not route the cable next to heat sources such as the engine and exhausts
and areas that may see abrasion or rock damage.
Initial System Power Up and Test
Once the sensor and display are installed, wired, and connected, power should be applied to
test correct system operation. Upon power up, the display will go through its self-test by
illuminating all LED’s and sounding the buzzer. When the system is operating correctly in an
open field with no obstructions, the green power LED will be the only light illuminated. If all the
detection (yellow) LED’s are lit, check for any obstruction which may be detected by the
sensor. If possible move the sensor so it is not detecting the object(s). If it is not possible to
relocate the sensor, then consult the factory.
If for some reason the system is malfunctioning, all of the LED’s (yellow and green) will be
flashing and the buzzer will be sounding. Refer to the Error Indications and Troubleshooting
sections below to determine the error and solution.
Once the system has been installed, the detection zone should be tested. Testing is
accomplished by using two individuals. One individual engages the parking brake, depresses
the vehicle brake, and places the vehicle in reverse. The other individual then walks through
the detection zone noting where the display buzzer or the back up alarm activates. By moving
about the rear of the vehicle and noting when the display or back up alarm activate, an
accurate detection zone can be mapped.
Preco Electronics, Inc.
415 N. Maple Grove, Boise, ID 83704
(800) 453-1141
Copyright 2003
Page 7 of 10
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COMMON INSTALLATION PROBLEMS AND TROUBLESHOOTING
Display power ON green LED is not illuminated.
Verify that DC power is applied to the sensor when the vehicle is in reverse (+12V to
red wire and ground to black wire).
Verify that the cable between the sensor and display is properly connected.
Display continuously flashes.
Check connection between display and sensor.
All the display LED’s are illuminated when sensor is mounted.
Verify the sensor is pointing outward from the vehicle in an open area with no
obstructions. This may require removing the mounting screws and lifting the sensor out
away from the rear of the vehicle. If the display LED’s are not active when moved away
from the vehicle, reposition the sensor to a new location that offers and unobstructed
view.
Back up alarm does not operate when connected to the PreView tm sensor.
Verify that the back up alarm positive is wired per the schematic provided in these user
instructions.
Disconnect all other back up alarm connections to the vehicle.
Sensor is detecting the ground, indicated by a few of the display LED’s being lit.
In an open field, either position the sensor to a higher mounting location or slightly angle
the sensor upward 2 to 5 degrees. The minimum recommended mounting height is 30
inches. Contact Preco for an angle bracket if one is required.
Cable between display and sensor is too short.
Contact Preco for an extension cable. This cable is placed between the sensor and
display cable and comes in 5’, 10’, 15’ and 25’ increments.
Detection pattern seems wider when a vehicle is detected rather than a person.
This is normal since a vehicle presents a larger radar cross section than a person.
Preco Electronics, Inc.
415 N. Maple Grove, Boise, ID 83704
(800) 453-1141
Copyright 2003
Page 8 of 10
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MANUFACTURER LIMITED WARRANTY AND LIMITATION OF LIABILITY
Manufacturer warrants that on the Date of Purchase this Product will conform to
Manufacturer's published specifications for the product, which are available from Manufacturer
on request, and Manufacturer warrants that the product is free from defects in materials and
workmanship. This Limited Warranty extends for twelve (12) months from the date of
manufacture. Manufacturer will, at its option, repair or replace any product found by
Manufacturer to be defective and subject to this Limited Warranty.
This Limited Warranty does not apply to parts or products that are misused; abused; modified;
damaged by accident, fire or other hazard; improperly installed or operated; or not maintained
in accordance with the maintenance procedures set forth in Manufacturer's Installation and
Operating Instructions.
To obtain warranty service, you must ship the product(s) to the specified Manufacturer location
within thirty (30) days from expiration of the warranty period. You must fill out the warranty
claim form and include the form with the product. You must prepay shipping charges and use
the original shipping container or equivalent. Return shipping charges within the United
States, Canada, and Puerto Rico, will be paid by Manufacturer. This Limited Warranty will
apply only to a product purchased and located in the United States, Canada, or Puerto Rico.
EXCLUSION OF OTHER WARRANTIES: MANUFACTURER MAKES NO OTHER WARRANTIES,
EXPRESSED, IMPLIED OR STATUTORY. THE IMPLIED WARRANTIES FOR MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY EXCLUDED AND SHALL NOT
APPLY TO THE PRODUCT. BUYER'S SOLE AND EXCLUSIVE REMEDY IN CONTRACT, TORT OR
UNDER ANY OTHER THEORY AGAINST MANUFACTURER RESPECTING THE PRODUCT AND
ITS USE SHALL BE THE REPLACEMENT OR REPAIR OF THE PRODUCT AS DESCRIBED ABOVE.
LIMITATION OF LIABILITY: IN THE EVENT OF LIABILITY FOR DAMAGES ARISING OUT OF THIS
LIMITED WARRANTY OR ANY OTHER CLAIM RELATED TO MANUFACTURER'S PRODUCTS,
MANUFACTURER'S LIABILITY FOR DAMAGES SHALL BE LIMITED TO THE AMOUNT PAID FOR
THE PRODUCT AT THE TIME OF ORIGINAL PURCHASE. IN NO EVENT SHALL MANUFACTURER
BE LIABLE FOR LOST PROFITS, THE COST OF SUBSTITUTE EQUIPMENT OR LABOR,
PROPERTY DAMAGE, OR OTHER SPECIAL, CONSEQUENTIAL OR INCIDENTAL DAMAGES
BASED UPON ANY CLAIM FOR BREACH OF CONTRACT, NEGLIGENCE OR OTHER CLAIM,
EVEN IF MANUFACTURER OR A MANUFACTURER'S REPRESENTATIVE HAS BEEN ADVISED OF
THE POSSIBILITY OF SUCH DAMAGES. Manufacturer shall have no further obligation or liability
with respect to the product or its sale, operation and use, and Manufacturer neither assumes
nor authorizes the assumption of any other obligation or liability in connection with such
product.
This Limited Warranty gives you specific legal rights, and you may also have other legal
rights, which vary, from state to state. Some states do not allow the exclusion or limitation of
incidental or consequential damages, so the above exclusion or limitation may not apply to
you.
Any oral statements or representations about the product, which may have been made
by salesmen or Manufacturer representatives, do not constitute warranties. This Limited
Warranty may not be amended, modified or enlarged, except by a written agreement signed by
an authorized official of Manufacturer that expressly refers to this Limited Warranty.
Preco Electronics, Inc.
415 N. Maple Grove, Boise, ID 83704
(800) 453-1141
Copyright 2003
Page 9 of 10
370-894-1B
PREVIEW tm DAILY MAINTENANCE
Detach this page and place with daily operator maintenance procedures
Safety Message to Operators of Vehicles with PreView tm Systems
1.
2.
3.
4.
5.
6.
7.
The PreView tm system is intended as an Object Detection System and should not be relied upon as your first line of
defense for the safe operation of the vehicle. It should be used in conjunction with established safety programs and
procedures to augment the safe operation of the vehicle, ground personnel, and adjacent property. Should the system
become inoperative, it could jeopardize the safety or lives of those who depend on the system for safety.
Testing and inspection of the system in accordance with these instructions and record of the results should be listed on
the daily maintenance report. The units on operating vehicles must be tested each day prior to the vehicle's operation.
Results of this test must be recorded in the maintenance log.
People operating this equipment MUST check for proper operation at the beginning of every shift or safety inspection
period.
People's lives depend on the proper installation of this product in conformance with these instructions. It is necessary to
read, understand and follow all instructions shipped with the product.
Failure to follow all safety precautions and instructions may result in property damage, serious injury, or death.
The PreView tm Object Detection System is intended for commercial use. Proper installation of a back-up aid requires a
good understanding of truck electrical systems and procedures, along with proficiency in the installation.
Store these instructions in a safe place and refer to them when maintaining and/or reinstalling the product.
Testing and Maintenance
NOTE: A walk around test shall be performed every day to verify proper function of the system and to familiarize the operator
with the zone of detection. More frequent inspections should be performed when:
The vehicle is operating in a particularly dirty or harsh environment.
The operator has reason to suspect the system has been damaged.
This test should be performed with two people, one who remains in the cab (the operator), and one who walks through the
sensor field to the rear of the vehicle (the assistant).
1.
2.
Clean the black sensor surface of any accumulation of dirt, mud, snow, ice, or debris.
Visually inspect the attached wiring and cable and verify that they are properly secured, not chafing or dangling free
where they could become snagged and damaged. Inspect the Radar Sensor and Operator Display Module and verify that
they are securely attached to the vehicle.
3. Set the park brakes, start the vehicle, depress and hold the vehicle brake and place the vehicle in reverse.
4. Verify the green “POWER” light is illuminated on the in-cab display.
5. The area to the rear of the vehicle should be clear of obstacles for a distance of 8 meters. If the display shows any
indicator other than the green light then there are objects to the rear of the vehicle that will interfere with the test. Move
the vehicle to a clear area and proceed.
6. The assistant should move to just behind the rear corner of the vehicle in sight of the operator's mirrors. He should then
walk toward the centerline of the vehicle parallel to the rear, noting when the external backup alarm activates, signifying
the sensor has detected him. Upon hearing the backup alarm the operator should verify all the display LED’s are lit and
the audible alarm is quickly pulsing. Note: If an external backup alarm is not connected, the operator will notice a
detection only by the display LED’s and buzzer operation and communicate the detection or lack of detection to the
assistant as the assistant moves through the area to the rear of the vehicle.
7. The assistant should continue walking through the area at the rear of the vehicle noting the area that detection occurs.
8. Now walk from the center of the rear of the vehicle straight back, away from the vehicle. When the alarm quits sounding
the detection limit has been reached.
9. Move halfway back and remain still for a few seconds, the alarm should continue to sound, demonstrating the system’s
ability to detect a still object.
10. The assistant should walk the complete rear of the vehicle noting the detection edges of the entire coverage area.
11. After the test the assistant needs to communicate to the operator the details on the detection zone.
For Questions call 1-800-453-1141 between 7:00 AM and 5:00 PM Mountain Standard Time
Preco Electronics, Inc.
415 N. Maple Grove, Boise, ID 83704
(800) 453-1141
Copyright 2003
Page 10 of 10
370-894-1B
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