Decatur Electronics Genesis II Select Directional User manual

Genesis II Select
Directional™
User’s Manual
and Installation Guide
Canada Variant • Rev 25/Aug/2010

Genesis II Select
Directional™
User’s Manual &
Installation Guide
This manual is the most current version
and supersedes all other manuals.
Canada Variant • Rev 25/Aug/2010

Table of Contents
Welcome to Decatur Electronics ...........................................6
Genesis II Select Directional Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
About This Manual ........................................................8
1 Installation ..........................................................10
1.1 Separating the Computer/Display Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.2 Mounting the Computer/Display Unit & Cables . . . . . . . . . . . . . . . . . . . 11
1.3 Mounting and Connecting the Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2 Computer/Display Unit...............................................17
2.1 Front Panel ......................................................17
2.2 Display Windows.................................................18
2.3 Lights ...........................................................18
3 Hand-Held Remote Control...........................................20
3.1 Control Buttons..................................................21
4 Communication System Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5 Operating the Genesis II Select Directional . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.1 Power ...........................................................23
5.2 Front and Rear Antenna..........................................23
5.3 Stationary Mode.................................................25
5.4 Moving Mode Opposite Direction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.5 Moving Mode Same Direction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.6 Faster Mode .....................................................31
5.7 Lock a Speed ....................................................32
5.8 Range Setting ...................................................32
5.9 Stopwatch Mode ................................................33
6 Performance Tips ....................................................35
6.1 How Radar Works ................................................35
6.2 Interference Sources and Remedies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.2.1 Angular Interference (Cosine Eect) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.2.2 Fan Interference ...............................................37
6.2.3 Batching ......................................................37
6.2.4 Electromagnetic Interference (EMI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.2.5 Multi-Path Beam Cancellation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.2.6 Patrol Harmonics ..............................................38
6.2.7 Radio Frequency Interference (RFI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.2.8 Shadowing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.2.9 Vehicle Ignition Interference). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
7 Field Tests............................................................39
7.1 Operator-Requested Self Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
7.2 Road Test........................................................40
8 Care, Cleaning, and Storage ..........................................41
9 Specications........................................................42
9.1 Mechanical .....................................................42
9.2 Antenna........................................................42
9.3 Environment....................................................42
9.4 Power Consumption ............................................42
9.5 Accuracy .......................................................43
9.6 Speed Range ...................................................43
10 Legal Requirements..................................................44
10.1 FCC Document..................................................44
10.2 Canadian Industry Certicate of Technical Acceptability . . . . . . . . . . 45
11 Frequently Asked Questions (FAQ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
12 Service .............................................................48
12.1 Warranty........................................................48
12.2 Service Return Procedure........................................49
13 How to Order Additional Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Appendix A - Communications Port.......................................52
Appendix B - Menu Features ..............................................53
User Notes .............................................................54

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Welcome to Decatur Electronics, Inc.
Thank you for choosing the Decatur Electronics Genesis II Select
Directional™ — A highly advanced trac radar unit that will reward
your department with years of dependable service. The Genesis II
Select Directional design incorporates high performance and long
range, with many leading features. We urge you to study this manual
before using the Genesis II Select Directional, so you can maximize
the benets of this sophisticated radar device. We believe you will be
pleasantly surprised by the features and advantages.
The Genesis II Select Directional is small, dependable, features
instant target acquisition, and is designed using a quality
management system certied to ISO 9001. If you are as pleased
with its performance as we think you will be, ask your Decatur sales
representative about other Decatur products including the Genesis™
line of radars, the Onsite™ line of speed trailers, dollies, and pole signs
and the Responder™ line of in-car video systems.
Trac ocers told us exactly what they wanted in a radar device -
and we built it. Try any one of our products and see if you don't agree
that it is the best-in-class!
—The Management and Sta at Decatur Electronics,
The Nation’s Oldest Radar Company
Genesis II Select Directional™ Features
The Genesis-II Select Directional™ is a highly advanced trac radar
device oering many advanced capabilities. It includes 32-bit digital
signal processing (DSP), a versatile detachable computer/display unit,
K-band directional antennas, and an easy-to-use hand-held remote
control. It also features Faster Mode for detecting the next strongest
target going faster than the strongest in multiple target situations.
The Genesis-II Select Directional is able to determine which direction
targets are moving. Directional technology enables the radar to
single out vehicles moving in one specic direction, while ignoring
vehicles moving in the other direction. This capability makes
stationary operation far more eective and makes moving same lane
mode very easy to operate.
The Genesis-II Select Directional digital signal processing (DSP)
provides instant target acquisition and speed lock as well as more
precise tracking and speed measurement.
If space in your vehicle is at a premium, you will appreciate the
detachable computer/display unit. For more safety conscious
installation options, you can separate the pieces and mount them
wherever best meets your specic needs.
The hand-held remote controls all of the functions of the radar unit.
The remote features convenient “eyes-o” raised buttons for use
without taking your eyes o the road and ts comfortably in the
palm of your hand, positioning all controls at your ngertips.

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About This Manual
This manual contains valuable information to help you set up, use
and maintain your Genesis II Select Directional™, so you can extend
its life and keep it at peak performance. Please take a moment to
read through it, and keep it handy for future reference.
Note the following symbols in this manual:
Indicates a warning message about safety
precautions. Please read it carefully.
Indicates a helpful tip or precaution to note.
Indicates section refers to optional equipment.
[OPT]
Your Genesis II Select Directional radar unit includes selections from
the following components:
Detachable Computer/
Display Unit
Computer Unit/
Antenna Mounting Bracket
K Band Directional Antennas Various Connector Cables
Handheld Remote Various Mounting Brackets
Optional Radar Mirror Display

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1. Installation
Use the following instructions to mount your Directional radar:
1.1 Separating the Computer/Display Unit (optional)
If the space in your motor vehicle is at a premium, you will appreciate
Genesis II Select Directional’s compact size and versatile components.
You can separate and remotely mount the computer unit from the
display unit. Common places to mount it are behind the dash, under
the driver’s seat, or on the console.
To separate the combined unit, rmly grasp the ends and pull
them apart.
Figure 1.1a
Separating the computer/display unit.
Note the 9-pin connectors on each half of the unit. Screw two
standos into the holes next to each connector to attach the two
pieces with the 9-pin connector cable.
Figure 1.1b
To connect the separated unit, rst insert the
standos to secure the cable connectors.
Then attach and secure the connectors with the thumbscrews on the
sides of each cable connector.
Figure 1.1c
Secure the connecting cable by fastening the
thumbscrews into the standos.
To return the unit to a one-piece conguration, remove the cables
and standos, line up the 9-pin connectors, and push the two pieces
together.
1.2 Mounting the Computer/Display Unit & Connecting Cabling.
WARNINGS
• Do not place the Genesis II Select Directional
components in locations that will obscure the driver’s
view of the road.
• Double-check each component to ensure it is securely
mounted. In an accident, a loose component could
strike an occupant of the vehicle.
• Do not place the Genesis II Select Directional computer,
antennas, cables, or brackets in your vehicle’s air bag
deployment zones. Refer to your vehicle’s owner’s
manual or call the vehicle manufacturer if you are
unsure where the air bag deployment zones are.

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You can mount the computer/display unit behind and to the side of
the steering wheel or on the dashboard. The computer unit easily
withstands and remains accurate in temperature extremes. Dash-
mounting the unit promotes safety; you can read the display without
taking your eyes o the road.
To mount the unit, use the Velcro™ fastening material or an approved
mounting bracket. Before applying the Velcro™, use a clean cloth
to remove any foreign material from the dashboard and bracket
face. Position the Velcro™ lightly on the computer/display unit and
mounting surface.
After the unit is in the correct position, press it rmly to ax it to the
surface. For the approved bracket mount, simply place and tighten
the screws on the mounting bracket into the holes in the unit. Then
adhere the suction cups to a clean glass surface. For maximum
adhesion, moisten the suction cups before axing them to the
surface.
There are ve locations where cables connect to the rear panel of the
computer unit. Four are quick-disconnect connectors, and a fth is a
nine pin serial port.
Figure 1.2a
The quick-disconnect connectors plug into the
computer unit in the above locations.
POWER
HAND
REMOTE
SERIAL
PORT
FRONT
ANTENNA
REAR
ANTENNA
1. Align the red dot on the connector with the red dot at the top of
the receptacle.
2. Push the connector into the receptacle until you hear a click.
Figure 1.2b
Align the red dot on the connector with the red
dot on the computer receptacle.
Power connector
WARNING
• Be sure to plug the connector into the computer unit
rst before plugging the power plug into the auxiliary
power source. If the power source is on, it can damage
the unit.
The power cable has a larger 12-volt power plug (cigar plug) on one
end. Make sure the plug ts securely in the motor vehicle’s auxiliary
power (cigarette lighter) receptacle.
Figure 1.2c
The cigarette plug for the auxiliary power receptacle.

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Remote connector
The hand-held remote has two connectors, one that plugs into the
remote and one that connects to the back of the computer unit.
While both connectors are the same, the connector with the strain
relief boot typically connects to the hand-held remote.
Figure 1.2d
Cable connector that plugs into the computer unit.
Antenna connector
The antenna cable uses two dierent connectors. One connector
plugs into the antenna and has a more smooth nish than the
connector that plug into the unit. It is important that the right
connector be plugged into the right receptacle or damage to the
connector or receptacle may result.
Figure 1.2e
Cable connector that plugs into the antenna.
To remove a cable, grasp and pull the connector.
Serial connector
On the back of the computer unit there is a female DB-9 connector
marked “serial” that allows you to connect the Genesis II Select
Directional to other devices (i.e. VIP, display signs, in-car video, PCs).
To use this RS232 serial connector you will need a communications
cable. (A communications cable for video and PC is not included. You
can order it from Decatur Electronics by calling 800.428.4315).
1.3 Mounting and Connecting the Antenna
The Genesis II Select Directional K-band antennas are incredibly
strong, yet compact and lightweight. The antennas are
interchangeable. The cables are also interchangeable and work with
either antenna.
Figure 1.3a
Dual antennas for the Genesis II Select Directional.
To attach the antennas to the brackets, align the threaded mounting
hole on the antenna with the slot on the L-brace. Then screw the post
into the threaded mounting hole.
Figure 1.3c
A front mount antenna
Figure 1.3b
A rear mount antenna
When axing the suction cup mounted front antenna, for maximum
adhesion, moisten the suction cups on the bracket before axing
them to a surface of the glass. Mount the forward-facing antenna
assembly or Wink Mount Adapter on the windshield. Mount the
rear-facing antenna as close to the C-Pillar and as high as possible for
optimum performance.

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2. Computer/Display Unit
2.1 Front Panel
The Genesis II Select Directional display faceplate contains three
windows for displaying the patrol, target and locked target speeds.
In addition, the faceplate also has indicators used to show the range
setting, faster or slower setting and whether the front or rear antenna
has been selected.
Figure 2.1
The Genesis II Select Directional front display.
TARGET WINDOW MODE WINDOW LOCKED WINDOW PATROL WINDOW
RANGE INDICATORS TARGET INDICATORS ANTENNA INDICATORS
PHOTOCELL
The faceplate also contains a photocell that automatically dims
the display at night for less glare and makes the display brighter in
daylight conditions, so you can easily read the display windows.
After you ax the bracket to a surface, adjust the position of
the antenna. ANY SIGNIFICANT DEVIATION FROM A PARALLEL
ORIENTATION CAN AFFECT THE READING OF A VALID TARGET.
Figure 1.3d
Correct Orientation
The antenna is parallel to the target
vehicle's direction.
Figure 1.3e
Incorrect Orientation
The antenna and target vehicle's
direction are not parallel.
Point the antenna so it is parallel with the patrol motor vehicle, (the
direction the patrol vehicle is facing) and parallel with the ground.
• Use only the mounting hardware approved by your
agency. Damage to the antenna housing can occur if
you use incorrect fasteners.
• Do not modify the brackets. Most brackets incorporate
an isolator that prevents the metal housing of the
antenna from coming into contact with the frame of
the car. Removal of the isolator can cause interference
to be easily picked up diminishing performance.
• When removing brackets that have suction cups, use
the tabs on the suction cups to break the vacuum seal.
After you have mounted the antenna, plug the cable into the
antenna and the antenna receptacle on the computer/display unit.
If you are using only one antenna, you must connect it to the FRONT
antenna receptacle. Either the FRONT or REAR button on the remote
can activate a single antenna system.

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2.2 Display Windows
TARGET: The TARGET window displays target speeds and is blank
when no target is present.
MODE: Displays the mode of operation (Stationary, Moving Mode
Opposite Direction, or Moving Mode Same Direction) except during
power up, self-test or when an error occurs. When an error occurs,
one of the following appears in the MODE window:
• LowV low voltage
• RFI radio frequency interference
• SYS system failure
• RMT? disconnected hand-held remote
LOCKED: When you press the LOCK button, the LOCKED window
holds and displays the target speed that was in the TARGET window.
PATROL: Displays the patrol speed. The window is blank when the
radar unit is in Stationary Mode.
2.3 Lights
RANGE: Indicates the sensitivity setting (or the target-acquisition
distance). The range can be independently set for each main
operating mode.
Figure 2.3a
Short Range
Figure 2.3b
Medium Range
Figure 2.3c
Maximum Range
FASTER: Illuminates when the fast function is active.
Figure2.3d
The Faster light
ANT FRONT and REAR: Indicates which antenna is transmitting. In
standby mode, neither light is on and neither antenna is transmitting.
Figure 2.3f
Antenna lights

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3. Hand-Held Remote Controls
REAR ANTENNA
TARGET LOCK
(STOPWATCH START/STOP)
FASTER TARGET
SELF-DIAGNOSTIC
POWER
REAR ANTENNA
MODE
VOLUME
RANGE CONTROL
(STOPWATCH DISTANCE)
SQUELCH
OPTION
(STOPWATCH MODE)
SPEAKER
Figure 3a
The S778-41CC-0 hand-held remote control unit.
Figure 3b
The S778-41CC-0 hand-held remote control
unit with detachable cable.
• If the hand-held remote is removed during operation,
RMT? appears in the Mode window and will stay on
until the remote is plugged back in.
3.1 Control Buttons
POWER (PWR): Powers the Genesis II Select Directional on and o.
OPTION (OPTN): The City/Highway option helps reduce shadowing
by setting a dierent minimum patrol speed for city and highway
speed conditions. This option works only while the unit is set in a
Moving Mode and the motor vehicle is not equipped with a VIP.
STOPWATCH MODE [OPT]: To place the Genesis II Select Directional
into the Stopwatch operational mode, press and hold the OPTN
button for two seconds. The letters StpW will appear in the MODE
window. Press the OPTN button again to exit this mode. See section
5.9 for a full description of the Stopwatch Mode.
PATROL SPEED LOCK, RECALL and BLANKING: This feature comes
standard with the Genesis II Select Directional and will enable the
patrol ocer to lock a target speed which will then become displayed
in the locked window, while remembering internally what the patrol
speed was at the time the speed was locked. The Genesis II Select
Directional will, as long as the antenna remains activated, continue
to track both the speed of the target in the target window and the
patrol motor vehicle speed in the patrol window.
1. To blank the patrol speed, press the OPTN button. Then press the
OPTN button again to recall it.
2. To permanently remove the locked patrol speed, reactivate the
antenna by turning it on.
TEST (TEST): Pressing the TEST button starts an extensive self test
of the radar unit’s circuitry. If the self test fails, the SYS message will
appear in the MODE window.
Pressing and holding the test button activates the menu feature. This
feature allows the operator to adjust some of the options of the radar
which are ocer preferences. See Appendix B for more information.

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SQUELCH (SQL): Selects the type of Doppler audio you hear. In
squelch mode, the sound is only the Doppler tone for the currently
displayed target. In the unsquelched mode, the unit sends out all
Doppler tones received by the antenna—patrol motor vehicles,
targets, interference, and noise. You typically use unsquelched audio
when you listen for interference.
RANGE (– RANGE +): Regulates the maximum target-acquisition
distance. You press the negative (–) or positive (+) side of the RANGE
button to decrease and increase the target acquisition distance.
When in the Stopwatch Mode, the RANGE button cycles through
distance units.
VOLUME (– VOLUME +): The volume control regulates the Doppler
audio and system status tone (beep) volume. Press the negative (–) or
positive (+) side of the VOLUME button to decrease and increase the
volume level.
FAST (FAST): Controls the Faster Mode feature.
MODE (MODE): Switches between the three operating modes:
Stationary Mode, Moving Mode Opposite Direction, and Moving
Mode Same Direction.
LOCK (LOCK): Transfers the target speed in the TARGET window to
the LOCKED window. After locking the speed, the system continues
to process and display target speeds in the TARGET window, so you
can continue to track the history of the target speed.
ANTENNA (ANT) FRONT and REAR: Activates and deactivates the
front and rear antenna. An antenna must be activated to track a
target speed.
4. Communication System Controls
You can congure the Genesis II Select Directional through the serial
communications (COM) port on the rear panel to communicate
with PCs, speed signs, in-car video systems, such as the Decatur
Electronics Responder 1000™ and the Decatur Electronics Vehicle
Interface Portal (VIP). The communications cable does not come
with your order and can be purchased separately from Decatur
Electronics. See Appendix A for the more details on the serial
communications port conguration.
5. Operating the Genesis II Select Directional
After you test and conrm that the unit is properly installed, it is
ready for use.
5.1 Power
The PWR button on the hand-held remote turns the Genesis II Select
Directional on and o. After you press the PWR button, the display
illuminates and the computer checks the circuitry. If the power-up
checks pass, the computer displays TEST PASS in the MODE window.
If the power-up checks fail, a system error message (SYS) will display
in the MODE window and the unit will not respond to any control
except the PWR button to power down. Turn the unit o then back
on. If the error message persists, remove the unit from service and
contact Decatur Electronics.
• When the Genesis II Select Directional is powered
down, it stores the current settings. These settings are
restored the next time you power up the unit.
5.2 Front and Rear Antenna
At power up, the Genesis II Select Directional antennas are in standby
mode. (Standby mode is when the antenna is not transmitting.) If no
antenna is connected to the unit, the FRONT and REAR lights cycle on
and o and Ant? displays in the MODE window.

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Figure 5.2a
If no antenna is connected, Ant? displays
The radar unit will not begin transmitting until you press an antenna
button. The antenna (ANT) buttons, up arrow (FRONT) and down
arrow (REAR), on the hand-held remote activate and deactivate the
antennas. The FRONT or REAR light will illuminate when the antenna
is transmitting.
Figure 5.2b
When the FRONT light illuminates, the FRONT antenna is transmitting.
To discontinue transmitting (to place the radar back into standby
mode), press the same (ANT) button.
The Genesis II Select Directional has three main operating modes:
Stationary, Moving Mode Opposite Direction, and Moving Mode
Same Direction.
5.3 Stationary Mode
You can use Stationary Mode to monitor trac that is moving toward
or away from the parked patrol motor vehicle. You can also select a
specic direction of trac (toward or away) to monitor.
Figure 5.3a
Tracking a vehicle moving AWAY from a stationary patrol vehicle
and the radar in Stationary Mode. using the front antenna.
There are three selections for stationary mode:
Stationary Both
Tracks vehicles moving towards or away from the patrol vehicle.
Stationary Towards
Only tracks vehicles moving away from the patrol vehicle.
Stationary Away
Only tracks vehicles moving away from the patrol vehicle.
To select a Stationary Mode of operation, press and hold the
MODE button for two seconds. The "Stationary Both" mode will be
represented by two arrows on the left (on pointing up, one pointing
down) and a solid line on the right representing a parked patrol
motor vehicle. When targets are measured, the letter "T" or "A" will be
displayed along side of the solid line to indicate the target is moving
TOWARDS or AWAY from the patrol motor vehicle.

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Figure 5.3b
The MODE window when the radar is in Stationary Both Mode.
Detected target speeds will display in the TARGET window. The
PATROL window will always remain blank while in this mode.
• In order to select the "Stationary Towards" or
"Stationary Away" modes, one of the antennas must be
activated.
After the “Stationary Both” mode has been selected, briey press
and release the MODE button a second time to select the “Stationary
Towards” mode. Pressing and releasing the MODE button a third time
will select the “Stationary Away” mode. Pressing and releasing the
MODE button a fourth time will cycle to the moving opposite mode
of operation.
When the radar is toggled into the “Stationary Towards” mode, a
“T” will briey be displayed along side of the solid line on the right.
When the “T’ is cleared, an arrow will be displayed that represents
the direction of travel in which the radar will search. (When using
the FRONT antenna, targets moving towards the patrol will be
represented by an arrow on the left pointing down. An arrow will be
pointing up when the REAR antenna is selected.) Once a solid target
is acquired, the letter “T” will again appear.
Figure 5.3c
Initially the letter “T” will indicate the Stationary Towards Mode has
been selected. The “T” will also appear when a target is acquired.
Figure 5.3d
For a FRONT antenna selection, the Stationary Towards Mode
will show an arrow pointing down.
When the radar is toggled into the “Stationary Away” mode, an “A” will
briey be displayed along side of the solid line on the right. Once the
“A” is cleared, an arrow pointed in the appropriate direction (based
on the antenna selection) will be displayed to indicate the direction
of the targets moving AWAY from the patrol car. Once a solid target is
acquired, the letter “A” will again appear.
Figure 5.3e
Initially, the letter “A” will indicate the Stationary Away Mode has
been selected. The “A” will also appear when a target is acquired.

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Figure 5.3f
For a FRONT antenna selection, the Stationary Away Mode
will show an arrow pointing up.
Detected target speeds will display in the TARGET window. The
PATROL window will always remain blank while in all of the stationary
modes.
WARNING
• When operating with the Directional Antenna, be
sure the antenna facing forward is connected into
the “FRONT” antenna port. If using dual antennas, the
antenna facing the rear should be connected into the
“REAR” antenna port.
5.4 Moving Mode Opposite Direction
Use the Genesis II Select Directional in the Moving Mode Opposite
Direction setting to display the speed of a target moving toward or
away from the moving patrol motor vehicle. These targets will be
moving towards the patrol (using the front antenna) or away from
the patrol (using the rear antenna).
Figure 5.4a
A patrol vehicle that is tracking a target vehicle with the rear antenna while
traveling with the radar unit in Moving Mode Opposite Direction.
To select Moving Mode Opposite Direction, press the MODE button
until the MODE window displays a down arrow on the left and an
up arrow on the right. The down arrow indicates the target’s travel
direction. The up arrow indicates the patrol motor vehicle’s travel
direction.
Figure 5.4b
The MODE window with Moving Mode Opposite Direction arrows.

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In this mode, the Genesis II Select Directional simultaneously
processes and displays the patrol and target motor vehicle speeds.
Detected target speeds will appear in the TARGET window. When
no targets are present, the TARGET window will show three dashes.
Patrol speeds will display in the PATROL window while the patrol
motor vehicle is moving.
5.5 Moving Mode Same Direction
To display the speed of targets traveling the same direction as the
patrol motor vehicle, use the Moving Mode Same Direction setting.
Figure 5.5a
A patrol car tracking a target using Moving Mode Same Direction.
To select this mode, press and release the MODE button until the
MODE window shows two upward pointing arrows.
Figure 5.5b
The MODE window when the radar is in Moving Mode Same Direction.
Unlike conventional moving radars, the operator is not required
to choose a "Faster or Slower" setting when measuring same lane
targets. The Genesis II Select Directional chooses the correct setting
automatically.
WARNING
• When operating with the Directional Antenna, be
sure the antenna facing forward is connected into
the “FRONT” antenna port. If using dual antennas, the
antenna facing the rear should be connected into the
“REAR” antenna port.
5.6 Faster Mode
The FAST button activates the Faster Mode, modifying the operation
of the Stationary and Moving Mode Opposite Direction modes.
The Faster light illuminates when you press the FAST button on the
hand-held remote.
When activated, the system simultaneously displays the strongest
target signal and the next strongest target signal going faster than
the target signal.
In the gure below, the 99 km/h motor vehicle is the strongest target
if the FAST button is activated, then the next stronger faster target,
namely the passenger motor vehicle at 123 km/h will be displayed.
Figure 5.6
Evaluating multiple targets in Faster Mode.
RADAR PATROL VEHICLE (104 Km/H)
OVERTAKING VEHICLE (123 Km/H)
99 Km/H 98 Km/H 107 Km/H 136 Km/H

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WARNING
• When in Stationary Mode, it is possible that the faster
vehicle is not traveling in the same direction as the
strongest vehicle.
5.7 Lock a Speed
The LOCK button transfers the target speed in the TARGET window
to the LOCKED window. After locking the speed, the radar unit
continues to process speeds and display target speeds in the TARGET
window, which will be solely the strongest reected signal.
Clear a locked speed one of the following ways:
• Press the LOCK button when an antenna is transmitting and no
target is present.
• Change the operating mode.
• Turn the antenna o then on again.
• The locked speed will remain when you change a dual-
antenna transmission status from front to rear or rear to
front.
• You may use the lock feature even when the radar is in
Faster mode.
5.8 Range Setting
You can adjust the range (sensitivity) of the Genesis II Select
Directional in each of the three operating modes independently:
• Moving Opposite Mode
• Moving Same Lane Mode [OPT]
• Stationary Modes
The ve LED lights above the word RANGE indicate the target-
acquisition range.
Press the negative (–) or positive (+) side of the RANGE button to
decrease or increase the range setting. The range lights progressively
illuminate as you increase the distance. When all lights are on, the
unit is in maximum range. The range setting for each operating mode
will be remembered when the radar is powered o.
5.9 Stopwatch Operation Mode [OPT]
Calculate target speeds without transmitting a radar signal by
using the stopwatch mode. The stopwatch mode relies on the
time/distance formula to calculate target speeds by measuring the
amount of time a motor vehicle takes to travel a known distance.
SPEED = DISTANCE / TIME
To place the radar into stopwatch mode, rst ensure that no antenna
is currently selected, then press and hold the OPTN button for two
seconds. The MODE window should display “StpW” to indicate you
have activated the stopwatch functions.
Figure 5.9
The Mode window will display "StpW" whenever the Genesis II Select
is operating in the Stopwatch Mode
The three numeric windows display time, distance, and speed.
TARGET WINDOW Calculated Speed in km/h
LOCKED WINDOW Time in Tenths of Seconds
PATROL WINDOW Distance in Meters

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Example:
Distance Set to: 440m (0.4 km)
Time Measured: 150 (15.0 seconds) (.00416 hours)
Calculated Speed: 96 km/h
To make use of the stopwatch mode, you need a road surface
that is marked with known distance intervals, or you will need to
independently make a measurement between two visible points
on the road in which you can time motor vehicles passing between
those points (for example a bridge underpass and a road sign) with
some precise distance measuring equipment.
Once you have an established measurement area, use the “-” or “+”
side of the RANGE button to enter the distance of the measurement
area in yards. Quickly press and release the (-) or (+) side of the
button to cycle up or down one single distance unit. By holding one
side of the RANGE button, the units will cycle up or down by tens,
and then later by hundreds.
When the correct distance is set, you can time motor vehicles as they
cross between the markers in your measurement area. Use the LOCK
button to start and stop the timer. The time will be counted and
displayed in the LOCKED window. Each sequential number represents
a tenth of a second (there is no decimal point displayed between the
right two digits). For example 150 represents 15.0 seconds.
After you have started and stopped the timer, a calculated speed
will be displayed in the TARGET window. The speed shown will be in
km/h.
The accuracy of the stopwatch mode will be limited by the precision
in which the distance measurement was made and the precision in
which the timer start and stop was activated. Press the MODE button
to exit the Stopwatch mode.
6. Performance Tips
Understanding potential radar interference and what to do when it
occurs can greatly improve your results.
6.1 How Radar Works
Determining a motor vehicle’s speed begins with the radar antenna
transmitting and directing a beam of microwave energy (radio
waves) at an approaching (or receding) target motor vehicle. When
energy from this beam strikes a moving motor vehicle, a small
amount of the beam is reected back to the antenna.
The reected signal frequency shifts by an amount proportional to
the speed of the target motor vehicle. This is known as the Doppler
Eect. The radar device then determines the target motor vehicle
speed from the dierence in frequency between the reected and
transmitted signal.
6.2 Interference Sources and Remedies
When properly installed and operated, Doppler radar technology
is accurate and reliable. However, variations in the environment
can cause situations and circumstances, which can cause spurious
responses which are readily identied by a qualied operator. Signs
that a speed is spurious can include the following characteristics:
• A valid target motor vehicle speed in the operational range will
always override the source of interference and will be conrmed
by the audio component.
• The Doppler tone will lack the pitch and clarity component.
• Speeds are irregular.
• Speeds appear to track with the engine speeds.
6.2.1 Angular Interference (Cosine Eect)
When operating in the Stationary Mode, the cosine eect causes
the radar unit to display a speed, which is always lower than the
actual target motor vehicle speed. This condition exists when the

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target motor vehicle’s path is not parallel to the antenna, including
conditions such as the motor vehicle traveling on a curve or a hill.
As the angle between the beam of the antenna and the target
motor vehicle increases, the displayed speed decreases. Ideally,
an angle of zero (0) degrees is preferable, because the displayed
speed is the actual target motor vehicle speed. However, in all uses
of police radar, the radar device is always at a slight angle to the
target motor vehicle to avoid collisions.
Velocity
Vector
Angle
Radar
Figure 6.2.1a
An angle between the antenna and the
target vehicle causes the cosine eect.
The following table shows the eect that an increasing angle has
on a displayed speed.
Horizontal Angle Degrees
Actual
Speed
0° 1° 3° 5° 10° 15° 20° 30° 45° 60° 90°
Displayed speed:
50 km/h 50 49 49 49 49 48 46 43 35 25 0
65 km/h 65 64 64 64 64 62 61 56 45 32 0
80 km/h 80 79 79 79 79 77 74 69 56 40 0
90 km/h 90 89 89 89 88 86 84 77 63 45 0
100 km/h
100 99 99 99 98 96 93 86 70 50 0
110 km/h
110 109 109 109 108 106 103 95 77 55 0
Table 6.2.1b
Actual and displayed speeds at dierent antenna-to-target angles.
Small angles (less than 10°) have little eect on accuracy. As
the angle increases, the displayed speed decreases. At 90°, the
displayed target speed is 0 km/h.
6.2.2 Fan Interference
Fan interference is the most common form of interference that you
are likely to experience. It is caused when the radar measures the
speed of the motor vehicle blower fan. Changing the fan speed
causes a proportional change in the display speed.
6.2.3 Batching
With the DSP algorithms the Genesis II Select Directional uses
batching will not occur.
6.2.4 Electromagnetic Interference (EMI)
Operating electric motors may produce EMI. With the DSP
algorithms the Genesis II Select Directional has eliminated this.

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6.2.5 Multi-Beam Cancellation
The Genesis II Select Directional is immune to multi-beam
cancellation.
6.2.6 Patrol Harmonics
In all police radar, when a patrol motor vehicle passes a large,
stationary object such as a road sign, building, or overpass, the
return signal can briey overload the processing circuitry. The
Genesis II Select Directional detects this condition and will not
display speeds which are generated by this overloading.
• Targets traveling at speeds which are close to the
patrol speed can also mimic this condition and will
be rejected. The target window will show an “_H_”
indicating that it is a patrol harmonic. To process this
type of target, simply increase or decrease your patrol
speed by at least 3 km/h.
6.2.7 Radio Frequency Interference (RFI)
The Genesis II Select Directional contains an RFI detection circuit
that detects excess radio frequency energy. When stray radio
frequency energy reaches an excessive level, the system displays
the RFI message and stops processing and displaying speeds.
The system resumes normal operation when the RFI condition no
longer exists. At that time, any locked speeds will display again.
6.2.8 Shadowing
In Moving mode, the radar processes two speeds–patrol and
target. The stronger of the two, the patrol speed, is created when
the radar beam reects from passing stationary objects, such as
the pavement or terrain the motor vehicle is traveling on. However,
some situations cause return signals to be larger than the reection
from the ground, such as when the patrol motor vehicle is rapidly
overtaking a slow-moving 18-wheeler. Given a choice between
reading passing ground clutter or the large return signal generated
by the vertical expanse of the truck’s trailer, the radar might ignore
the ground speed and lock onto the stronger return signal. Rather
than receiving a true patrol speed, the radar reads the dierential
speed between the motor vehicle and the 18-wheeler. The
computer then subtracts this articially low speed from the closing
speed and assigns a higher speed to the target.
The shadowing error is easy to recognize, because the radar
patrol speed and the speedometer reading will vary signicantly.
The target speed in this instance also will vary considerably from
your visual estimation. The correct City/Highway setting helps to
minimize this eect.
• The Genesis II Select Directional recognizes and ignores
shadowing when equiped with the VIP.
6.2.9 Motor vehicle Ignition Interference
The Genesis II Select Directional is designed to operate from the
motor vehicle’s cigarette lighter receptacle. However, some motor
vehicles exhibit excessive alternator noise at the cigarette lighter
receptacle. This can be eliminated by wiring direct to the battery.
7. Field Tests
The following tests are performed to verify the operation and
accuracy of the Genesis II Select Directional.
7.1 Operator-Requested Self Test
Pressing the TEST button initiates a comprehensive system self test.
The Genesis II Select Directional will not power down during a self
test and checks the following:
DISPLAY TEST: Allows the operator to verify that the digit segments
and status LED lights are working correctly and that none of the
pixels in the number segments are burned out.