Decatur Electronics GHD User manual

GHD™
Scout™
User’s Manual
Canada Variant • Rev 25/Aug/2010

GHD™
Scout™
User’s Manual
Canada Variant • Rev 25/Aug/2010
This manual is the most current version
and supersedes all other manuals.

Table of Contents
Welcome to Decatur Electronics ........................................... 6
About This Manual ........................................................ 7
1 Safety Information .................................................... 7
2 Receiving Inspection .................................................. 9
3 Getting Started ......................................................10
3.1 Introduction.....................................................10
3.2 Battery Charging - SCOUT........................................10
3.3 Removing The Battery Holder - SCOUT. . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.4 Battery Installation...............................................11
3.5 Inserting The Holder Into The SCOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.6 Charging The Batteries - SCOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.7 Charging Status Indicator (LED) SCOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.8 Battery Run Time - SCOUT........................................14
3.9 Replacing Batteries - SCOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.10 Connecting The Power Cord - SCOUT . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.11 Plug In The Power Cord - GHD & SCOUT . . . . . . . . . . . . . . . . . . . . . . . . 15
3.12 Control Panel Functions .......................................15
3.13 Measuring Target Speed In Faster Vehicle Mode. . . . . . . . . . . . . . . . . 15
4 Components - GHD & SCOUT......................................... 16
4.1 Control Buttons.................................................. 16
4.2 Display.......................................................... 17
4.2.1 Number Segments............................................. 17
4.2.2 Status Indicator Icons.......................................... 17
4.3 Trigger .......................................................... 18
4.4 Mounting Conguration......................................... 18
5 Operating Modes .................................................... 19
5.1 Menu............................................................ 19
5.2 Directional....................................................... 22
5.3 Strongest Signal Mode........................................... 23
5.4 Faster Mode..................................................... 23
5.5 Faster-Toggle Mode.............................................. 23
5.6 Faster-Hold Mode................................................ 24
6 Serial Output Mode.................................................. 25
7 Performance Tips .................................................... 25
7.1 How Radar Works................................................ 25
7.2 Interference Sources............................................. 25
7.2.1 Angular Interference (Cosine Error Eect) . . . . . . . . . . . . . . . . . . . . . . . 26
7.2.2 Fan Inteference................................................ 27
7.2.3 Electromagnetic Interference (EMI). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7.2.4 Feedback Interference......................................... 27
7.2.5 Multi-Path Beam Cancellation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7.2.6 Radio Frequency Interference (RFI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7.2.7 Scanning...................................................... 28
7.2.8 Vehicle Ignition Interference). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
8 Testing The Device................................................... 29
8.1 Operator-Requested Self Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8.2 Mini-Test ........................................................ 29
9 Care, Cleaning, and Storage ......................................... 30
10 Specications........................................................ 30
10.1 Antenna Parameters K-Band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
10.2 Environment .................................................. 30
10.3 Speed Range Parameters....................................... 30
10.4 Power Consumption Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
10.5 Accuracy ...................................................... 31
11 Legal Requirements.................................................. 32
11.1 FCC ...........................................................32
12 Frequently Asked Questions (FAQ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
13 Warranty.............................................................34
14 Service Return Procedure.............................................35
15 How to Order Additional Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
16 Communications Port................................................37
17 User Notes...........................................................38

GHD™ & Scout™ User’s Manual GHD™ & Scout™ User’s Manual
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Welcome to Decatur Electronics, Inc.
Thank you for choosing this Decatur Electronics product — A highly
advanced trac radar unit that will reward your department with
years of dependable service. Both the Genesis Handheld Directional
(GHD)™ and Scout™ incorporate high performance and long range,
with many leading features. We urge you to study this manual
before using the GHD or Scout so you can maximize the benets of
this sophisticated radar device. We believe you will be pleasantly
surprised by the features and advantages.
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
About This Manual
This manual contains valuable information to help you set up, use
and maintain your radar, 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.
1. Safety Information
All service needs should be referred back to the manufacturer or to
your local authorized service center.
WARNING
• Do not over voltage the radar - it can damage the unit!
See notes.
• When replacing batteries in the SCOUT you should
replace all 6 with new batteries even if you suspect that
only one cell is defective.
• Use rechargeable Nickle-Metal-Hydride batteries only.
• The GHD and the SCOUT are designed to operate o
of conventional +12 VDC (10.8 to 16.5 VDC) from their
power cables. In addition the SCOUT is also designed
to operate at 7.2VDC from the internal batteries. Over
voltage to the power cables or incorrect batteries can
cause damage.
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• Opening the GHD or the SCOUT (other than battery
replacement) automatically voids any warranty still in
eect. There are no user serviceable parts inside.
• Do not expose the GHD or the SCOUT to excessive
moisture. Never submerge the device. Violation of these
guidelines may void the warranty.
• Do not drop the GHD or the SCOUT on hard surfaces
since damage could occur. Units damaged by dropping
or abuse are not covered for warranty repair.
2. Receiving Inspection
When you receive your radar, inspect all components for freight
damage that might have happened during shipping or unloading.
• Notify the freight company immediately of any damage,
preferably while the driver is present.
• Record the damage on the bill of lading and keep a record of the
problems or damage.
• The package should include the following pictured items along
with this User’s Manual.
Scout or GHD Radar Detachable Power Cable (Scout)
Batteries/Battery Holder (Scout)
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3. Getting Started
3.1 Introduction
The GHD and SCOUT are stationary radars that give you the option
to track vehicles approaching, receding, or moving in both directions
simultaneously. Directionality dramatically enhances the target
selection process. For example, if the radar is set in toward (t) mode,
it will track only vehicles coming toward the radar and ignore all
vehicles moving away from it! In heavy trac situations, you can
choose to make trac moving in either direction invisible to the
radar.
3.2 Battery Cha rging - SCOUT
The SCOUT is designed to operate o of six (6) rechargeable Nickel-
Metal-Hydride batteries (or o the DC power cord). When you rst
receive your radar, the batteries will need to be charged for the rst
time before using. Once batteries have been charged if you do not
use the SCOUT for 3-4 weeks, you will want to recharge the batteries
before use in order to get the full run time. To charge batteries for the
rst time or to replace the batteries following steps 3.6 to 3.7.
3.3 Removing the Battery Holder - SCOUT
The battery holder is located inside the handle of the SCOUT and is
accessed by means of a sliding door. When rst received, the holder
should already have batteries installed, but if not then you will need
to remove the holder and loaded it with batteries. To remove the
battery holder slide the battery cover to the right until the battery
holder is released as shown in Figure 3.3. The door can be completely
removed from the slide.
Figure 3.3
3.4 Battery Installation - SCOUT
Insert the batteries into the battery holder following the polarity
guide that is on the inside of the battery holder (Figure 3.4a.) Once
properly loaded the battery holder will look like the example in
Figure 3.4b
Figure 3.4a Figure 3.4b
• Note that the negative side of each battery goes to the
spring contacts of the battery holder.
3.5 Inser ting the Holder into the SCOUT
The battery holder is designed so that it can only make contact with
the power connections inside the gun if the holder is slid into the
gun in the correct way. If you look closely at the holder you will see
that there is a positive and negative terminal on it. These need to be
inserted into the gun with the terminals located at the top as shown
in the picture below.
Figure 3.5
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Once the batteries have been properly loaded into the holder and
the holder has been inserted into the handle of the gun then the
door can be put back in place and slid closed. If you have not already
charged the batteries using an optional NiMH charger, you are now
ready to charge the batteries using the power cable.
• If the holder has been placed incorrectly into the
handle the door can not be put back in place and
closed..
3.6 Charging the Batteries - SCOUT
The power cable that comes with the SCOUT can be used to either
power the SCOUT directly from your vehicle receptacle or to charge
the SCOUT’s batteries. Once the batteries have been properly
installed into the holder and inserted into the handle plug the
power cord into the power connector at the base of the handle by
aligning the red dot on the power cord’s plug with the red dot on
the connector (See Figure 3.6). Failure to align the plug with the
connector properly will result in damage to the pins of the jack.
Figure 3.6
Next, plug the lighter plug into an active cigarette lighter receptacle
in the vehicle. The red led on the lighter plug should come on
showing that power is being applied to the SCOUT. With the SCOUT
turned o, it will take approximately 2 hours to fully charge the
batteries. Turning the SCOUT on with the cord plugged in will stop
the charge cycle allowing the gun to be operated from the power
cord. Batteries do not charge when the gun is turned on.
3.7 Charge Status Indicator (LED) - SCOUT
The status of the charge can be determined by the Charge Status
Indicator LED located on the bottom of the handle (See gure 3.7).
The table below denes the status.
• Fast blinking green light = checking battery condition
• Medium blinking green light = charging battery
• Solid green light = charged
• Solid red light = charging error
Figure 3.7
The normal charging sequence is fast blink for 60 seconds, medium
blink until batteries are fully charged (approximately 2 hours for fully
discharged batteries) and solid green once batteries are charged.
The gun can be left to charge indenitely. The charging circuit will
automatically shut o once charging is complete.
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• The SCOUT must be OFF or the batteries will not
charge. You can not operate the SCOUT and charge the
batteries at the same time.
• Best performance from your batteries is obtained when
recharged at temperature between 10ºC and 45ºC.
Recharging outside of that temperature range may
result in reduced battery life or incomplete charging.
3.8 Battery Run Time - SCOUT
How long the SCOUT can operate between recharges depends upon
several factors including the milliamp hour (mAh) capacity of the
batteries, age of the batteries, and how the SCOUT is used. Generally
a set of 6 new 2500 mAh batteries fully charged should run for
approximately 1 week between recharges given normal use.
3.9 Replacing Batteries - SCOUT
When replacing the batteries with new ones remember to use only
rechargeable Nickel-Metal-Hydride batteries and to replace ALL the
batteries at the same time even if you suspect that only one battery is
bad. Follow the instructions listed in steps 3.2 through 3.7 for proper
installation and charging when replacing batteries.
3.10 Connecting the Power Cord - SCOUT
If you choose to run o the power cord instead of the internal
batteries, connect the power cord to the receptacle on the bottom
of the SCOUT being sure to properly align the plug on the power
cord to the connector on the bottom of the SCOUT. The SCOUT
automatically will switch from the internal batteries to the power
cord for power when the unit is turned on.
3.11 Plug In the Power Cord - GHD & SCOUT
Plug the radar’s power cord into your vehicle’s cigarette lighter
receptacle. If you are using a separate battery pack as a power source,
plug the radar’s power cord into the battery pack’s receptacle.
3.12 Control Panel Functions
The operation of the GHD and the SCOUT are controlled by the ve-
button key pad and the trigger.
3.13 Measuring Target Sp eed in Faster Vehicle Mode
By default, the radar operates in Strongest Signal mode. You can
activate faster mode by pushing the FAST button.
• The GHD and the SCOUT have the same functions and
features. The major dierence is that the SCOUT can be
powered from the internal Nickel-Metal-Hydride (NiMH)
batteries without being restricted by a power cord..
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4. Components - GHD & SCOUT
4.1 Control Buttons
Figure 4.1
Faceplate Display and Control Buttons
• When you press the button of a valid function, the
system beeps to acknowledge the command if bEP
(beep) is set to On.
MENU: The MENU button lets you view the options you can change.
Repeatedly pressing the MENU button advances through the
programmable features.
SEL: The select (SEL) button lets you choose the settings in each of
the menu options. To change a menu option, press the SEL button.
TEST: When you press the TEST button, the radar runs a self test.
FAST: When you pressed, the radar enters Faster target mode.
PWR: The PWR button turns the radar on and o.
4.2 Display
4.2.1 Number Segments
The three large digits (888) on the left display the vehicle speed.
The three small digits on the right display either the locked
speed or Faster target speeds depending on the setting you have
selected (see Figure 4.2).
4.2.2 Status Indicator Icons
The following icons can appear at the top and bottom of the
display screen and describe the following conditions:
Figure 4.2
Number segments and status indicator icons.
POWER: When POWER appears, the power is on.
RADIO FREQUENCEY INTERFERENCE RFI: Indicates that excess
RFI energy is present. The radar automatically inhibits all speed
measurements. No new speeds display in the display window
or transmit via the serial port while this icon is active, and if the
system is displaying a locked speed, the speed will remain locked.
When the RFI condition no longer exists, the system will resume
normal operation. Possible causes of this condition are the patrol
vehicle’s FM communications, proximity to radio stations and other
broadcast equipment.
LOW BATTERY LOW BAT: Indicates that your vehicle’s battery
(or your separate battery pack) may be low on power. The system
will not transmit or display any new speeds while LOW BAT
appears, and if the system is displaying a locked speed, the speed
will remain locked.
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LOCK: Indicates that the speed previously displayed on the left
window is now locked and will appear in the right window.
FAST: Indicates that the radar is in Faster mode. When the device
is not in Faster mode, it is in Strongest Signal mode, which is the
default mode.
XMIT: Indicates that the radar is transmitting.
HOLD: Indicates the system is not transmitting.
ERROR: Indicates that the radar has detected an internal hardware
error which can aect the operation of the radar device. You should
turn the gun o and back on. If the problem persists, contact
Decatur Electronics at 800.428.4315 for assistance.
KM/H: The radar displays speeds in kilometers per hour, KPH
appears in the display.
4.3 Trigger
The radar transmits and receives microwave energy when you pull
the trigger. To measure the speeds of target vehicles, pull and hold
the trigger. When you want to lock a speed, release the trigger then
quickly pull it again (within 1/2 second). The radar will take the speed
in the left display when the trigger is released, move it to the right
display, and lock it in. The right display will then ash alternately
between the locked speed and a directional indicator (t means the
target vehicle is moving toward you, and A means it is moving away
from you). As long as you continue to hold the trigger, the radar will
continue to track targets and display their speeds in the left display.
The locked speed clears when you pull the trigger again.
4.4 Mounting Congurations
The radar is designed for hand-held operation. Optionally, you can
mount it to a standard camera tripod.
5. Operating Modes
The MENU and SEL buttons on the GHD & SCOUT control panels let
you review and change programmable settings. The radar gun will
remember the settings you last set when it is turned o and will
power up with them.
5.1 Menu
You can use the factory default settings or you can select your own
settings. To select a setting, repeatedly press the MENU button until
the setting you want to change appears. Then press the select (SEL)
button to advance through the selections for that setting. When you
have made your selection, release the buttons and your new settings
will be in eect. If neither MENU or SEL is pressed after 2 seconds, the
radar gun will return to normal operating mode, capturing whatever
settings you have selected to that point. Figures 5.1 and 5.2 show the
menu setting choices.
Figure 5.1a
Menu Settings
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Figure 5.1b
Menu Settings (1International Version Only)
DIRECTION (dir): Direction lets you select the direction of the
vehicle you want to display. The dir default value t A indicates that
you are monitoring vehicles moving both toward and away from the
radar gun.
BACKLIGHT (bL): This turns on and o the LCD backlight. bL ON is
the default setting.
AUDIO (Aud): The Audio setting controls the volume level of the
Doppler tone. The volume level settings are from 4 to 8 (4 is lowest,
and 8 is the highest volume level.)
SENSITIVITY LEVEL (SEn): The SEn option lets you control the
maximum target-acquisition range. SEn levels range from 1 through
6 (1 is the minimum range, and 6 is the maximum range.)
SQUELCH (SLh): The squelch determines the type of Doppler audio
you want the radar gun to send out. When squelch is on, the sound
is only the Doppler tone for the displayed target. When squelch is o,
you will hear all Doppler tones, including other vehicles, interference
and any noise the antenna receives.
COMMUNICATIONS PORT (Prt): The Prt setting indicates which
communication port conguration you want the system to use. Zero
means no serial communication, and 1 through 6 (and 7 if you have
the international version) are various setting options (see the menu
settings.)
FASTER VEHICLE (FSt): The FSt setting programs the FAST button
for either Faster-Hold or Faster-Toggle mode. The default, 1, is Faster-
Toggle, and 0 is Faster-Hold.
MINITEST (tSt): The tSt requires the system to automatically
perform a “mini” self test every 10 minutes.
BEEP (bEP): The bEP option sets the system to give an audible “beep”
to verify every time a key is pressed. bEP ON is the default setting.
POWER DOWN (Prd): The Prd option (Scout only) and is designed
to maximize the amount of time the radar can operate before the
batteries need to be recharged. With the feature set to ON the radar
will automatically power o if there has not been any trigger or key
presses for 15 minutes in order to conserve battery power. Prd ON is
the default setting.
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5.2 Directional
The radar lets you easily select and focus on vehicles approaching or
receding from your stationary patrol position.
RADAR PATROL VEHICLE
88 Km/H
98 Km/H 107 Km/H 136 Km/H
Figure 5.2a
Evaluating multiple targets in Faster Mode.
While in directional mode t (toward only), the radar gun does not
track the truck going 88 km/h. It displays the car going 98 km/h.
Figure 5.2b
The directional setting displays tA, t or A
You can change the dir option to t to display only the speeds of
targets coming toward you or A to display only the speeds of targets
moving away from you. When you are in t A mode, the radar will
display a t or an A depending on the direction the target is traveling.
If the radar cannot determine the target direction, the direction
indicator will not display. Target direction, t or A, will display in
the right window to indicate the target’s direction unless the right
window is in use by another function.
5.3 Strongest Signal Mode
All radar track the strongest signal, an essential function of tracking
history. The radar defaults to the strongest signal-tracking mode and
will stay in this mode until you press the FAST button. In Strongest
Signal tracking mode, the radar displays the speed of the vehicle with
the strongest return signal, which is often the closest car. This speed
appears in the left window.
5.4 Faster Mode
The advanced signal processing algorithms in the GHD & SCOUT
simultaneously track multiple vehicles. In Faster mode, the radar
takes the strongest return signal and uses it as a reference level.
It then looks at the return signal levels from all other vehicles
going faster than the strongest vehicle and compares them to that
reference level. It will display the speed of the vehicle that is moving
faster than the strongest signal and is the next strongest target. In
multiple target situations, the next strongest target going faster than
the strongest is often closest to the strongest vehicle. The FAST icon
illuminates when in faster mode.
There are two dierent Faster target modes: Faster-Toggle mode and
Faster-Hold mode.
RADAR PATROL VEHICLE
Overtaking Vehicle (123 Km/H)
98 Km/H 99 Km/H 107 Km/H 136 Km/H
Figure 5.4
The vehicle going 70 mph is the next strongest target
going faster than the strongest.
5.5 Faster-Toggle Mode
In Faster-Toggle mode, you can toggle between the Faster and
Strongest Signal targets by pressing the FAST button (the FAST icon
illuminates.)
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To switch from Strongest Signal target to Faster target, press and
release the FAST button. The speed of the vehicle returning the
strongest signal will continue to appear in the left window, and the
speed of the next strongest target going faster than the strongest
will appear in the right window. The system will remain in Faster
mode until you press the FAST button again or until you lock a speed,
which automatically switches the gun back to the Strongest Signal
target.
6. Serial Output Mode
The GHD and the SCOUT have an RS232 communications port on
the bottom of the handle. Using a custom RS232 communications
cable, you can connect the radar and transmit data to display signs,
in-car video, and PCs for recording and analyzing speed data. Figure
6 illustrates the location using the SCOUT as an example.
Figure 6
Port location as shown on the SCOUT.
• In Faster-Toggle mode, the radar gun locks only the
strongest vehicle speed.
5.6 Faster-Hold Mode
To use Faster-Hold mode, make sure you have selected Faster-Hold
in the menu (FSt 0). Press and continue to hold the FAST button.
When active, the faster vehicle speed is in the left window. If there
are no faster vehicles, the display will be blank. When you release the
FAST button, the gun will automatically switch back to the strongest
signal.
If you lock the speed of the fast vehicle, the LOCK and FAST icons will
designate that the locked speed is a faster target lock. If these icons
do not appear, the lock is on the strongest target.
Figure 5.6
Strongest signal > Faster–Toggle > Faster–Hold
7. Performance Tips
Understanding potential radar interference and what to do when it
occurs can greatly increase the radar’s performance.
7.1 How Radar Works
Determining a vehicle’s speed begins with the radar gun transmitting
a beam of microwave energy (radio waves) at an approaching or
departing target vehicle. When energy from this beam strikes a
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 vehicle. This is known as the Doppler eect.
The radar device then determines the target vehicle speed from the
dierence in frequency between the reected and transmitted signal.
7.2 Interference Sources
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:
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• 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. (See paragraphs 7.2.2 through 7.2.8.)
• The Doppler tone will lack the pitch and clarity component.
• Speeds are irregular.
• Speeds appear to track with the engine speeds.
7.2.1 Angular Interference (Cosine Eect)
The cosine eect causes the system to display a speed which is
lower than the actual vehicle speed. This condition occurs when
the target vehicle’s path is not parallel to the antenna, including
conditions such as the vehicle traveling on a curve or hill.
As the angle between the beam of the antenna and the target
vehicle increases, the displayed speed decreases. Ideally, an angle
of zero (0) degrees is preferable, because the displayed speed is the
actual target vehicle speed. However, in all uses of police radar, the
radar device is always at a slight angle to the target vehicle to avoid
collisions.
Velocity
Vector
Angle
Radar
Figure 7.2.1a
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°
Displayed speed:
45° 60° 90°
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 7.2.1b
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 target
speed is 0—grossly incorrect. Cosine Eect will always result in a
target speed being displayed that is less than the actual speed of
the moving motor vehicle, which will always be advantageous to
the motorist.
7.2.2 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 vehicle blower fan. Changing the fan speed causes a
proportional change in the display speed.
7.2.3 Electromagnetic Interference (EMI)
Operating electric motors may produce EMI. With the DSP
algorithms the GHD and Scout has eliminated this.
7.2.4 Feedback Interference
When the radar beam is directed at computer screens, streetlights,
and other electronic devices, it can display spurious speeds. To
correct the interference, relocate the radar gun antenna.
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7.2.5 Multi-Beam Cancellation
The GHD and the SCOUT are immune from multi-path cancellation.
7.2.6 Radio Frequency Interference (RFI)
The GHD and SCOUT radars contain an RFI detection circuit that
detects excess radio frequency energy. When stray radio frequency
energy reaches an excessive level, the system displays an 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.
7.2.7 Scanning
The GHD and SCOUT are designed to be used while attached
to a solid mount or hand-held in a steady position. Moving or
“scanning” the antenna past stationary objects can cause the
system to detect motion. Obtaining a speed reading from scanning
will not happen when you properly use the radar.
7.2.8 Vehicle Ignition Interference
The GHD and SCOUT have been designed to operate from the
vehicle’s cigarette lighter receptacle (or from the 6 internal AA
Nickel-Metal-Hydride batteries located in the base of the handle in
the case of the SCOUT). When connected to the cigarette lighter
receptacle it should be noted that some vehicles exhibit excessive
alternator noise at the lighter receptacle. In these rare cases, the
radar can exhibit erratic readings, especially when the vehicle’s
electrical system is operated under heavy load. Wiring an accessory
outlet directly to the battery minimizes the eect. If you are
operating o of the gun’s internal batteries then vehicle ignition
interference will not be a factor.
If you suspect your vehicle’s electrical system, contact Decatur
Electronics’ Customer Service Department for more information.
8. Testing the Device
8.1 Operator-Requested Self Test
Pressing the TEST button initiates a comprehensive system self
test, which checks the numeric displays and runs a target speed
simulation. The self test checks:
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.
CIRCUITRY TEST: The system checks the internal circuitry. If the unit
passes all internal checks, the message PASS will be displayed. If an
error should occur then FAIL will appear in the display window.
SPEED SIMULATION TEST: The radar veries speed accuracy using
synthesized Doppler frequencies corresponding to a series of four
simulated speeds: 25, 50, 75, and 100 km/h.
• Section 8.1 must be completed by the ocer prior to
enforcement and at the conclusion of the ocer's tour
of duty (if any enforcement action was taken).
8.2 Mini-Test
The tSt option is set to automatically perform a “mini” self test every
10 minutes.
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9. Care, Cleaning, and Storage
• Avoid spilling food, beverages and other liquids on the radar
device.
• When you are not using or transporting the device, store it in its
original packaging.
• To clean the radar device, dust it with a soft clean cloth, which is
free of cleaning solutions.
10. Specications
10.1 Antenna Parameters
K-Band
IACP Type III
Nominal transmission frequency 24.150 GHz
Nominal horizontal beamwidth 12°
Polarization Linear
(Vertical)
Nominal microwave power output 7 mW
Maximum aperture power density <1 mW/cm2
10.2 Environment
Ambient operating temperatures -30ºC to +70ºC
Maximum humidity 90% relative humidity
(non-condensing) at 37°C
10.3 Speed Range Parameters
Speed Display Ranges Minimum Maximum
kph 20 337
10.4 Power Consumption Parameters
GHD
Supply voltage range 8.5VDC – 16.5VDC
Low voltage trip with antenna on 8.5VDC
SCOUT
Supply voltage range (with power cord) 8.5VDC - 16.5VDC
Low voltage trip with antenna on
(with power cord) 8.5VDC
Battery supply voltage 7.2VDC
Battery low voltage trip w/antenna on 6.3VDC
GHD AND SCOUT when using power cord
All currents measured at 13.8VDC with backlight on and speaker on
(volume = 4).
Standby (antenna o ) .105 amperes
Antenna ON (no targets displayed) .170 amperes
Antenna ON ( "55" target displayed) .172 amperes
Antenna OFF (segment check "888 888") .116 amperes
Antenna ON (segment check "888 888") .180 amperes
10.5 Accuracy
The speed calculations of any radar Decatur Electronics produces are
100% accurate. The display precision is as follows:
± 1 unit of measure in stationary mode of operation.
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11. Legal Requirements
11.1 FCC Document
FEDERAL COMMUNICATIONS COMMISSION
WASHINGTON, D.C. 20554
GRANT OF EQUIPMENT AUTHORIZATION
Certication
Decatur Electronics Inc Date of Grant: 02/28/2000
715 Bright Street
Decatur,IL 62522 Application Dated: 12/21/1999
Attention: Randall Sanner
NOT TRANSFERABLE
EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE,
and is VALID ONLY for the equipment identied hereon for use under the
Commission’s Rules and Regulations listed below.
FCC IDENTIFIER HTRCR-1KD
Name of Grantee Decatur Electronics Inc
Equipment Class: Part 15 Field Disturbance Sensor
Notes: Trac Safety Radar
Frequency Output Frequency Emission
Grant Notes FCC Rule Parts Range (MHZ) Watts Tolerance Designator
15 24075 - 24175 %
Mail To:
EA96328
12. Frequently Asked Questions (FAQ)
Q. My radar gun will not power up. What should I do?
A. If operating o the batteries check to make sure they are
charged. If operating o the power cord, then check to make
sure that the power cord is properly plugged into the power
source. If the LED on the lighter plug is o, you have blown the
fuse. If the LED (light) on the connector is on, you have power.
If your radar still does not power up, call Decatur Electronics at
800.428.4315.
Q. My radar gun has poor range. How can I remedy this?
A. Verify that the antenna has no obstructions in front of it. If the
gun still has poor range, increase the sensitivity level (SEn). If you
still have this problem, contact Decatur Electronics.
Q. Will my radar work while my vehicle is moving?
A. No, the GHD and SCOUT radar guns are a stationary only models,
so your vehicle should be parked. You need to hold the radar
steady while operating it.
Q. What if I drop my gun?
A. The unit is extremely durable. Simply power up and perform
device test. If the gun doesn’t appear to work properly, contact
Decatur Electronics.
Q. Does D eca tur Electronics carry other law enforcement
products?
A. Yes, the Genesis™ series of radars - Genesis-VPD™ (Directional),
and the Genesis-II Select™ and Genesis-II Directional™dash-
mount moving radar products, and Responder™ series of in-car
video solutions.
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13. Warranty
TWO-YEAR RADAR WARRANTY
Decatur Electronics, Inc. guarantees the radar to be free from defects
in workmanship and material and to operate within specications
for a period of two years. During this period, Decatur Electronics will
repair or replace, at its option, any component (excluding batteries)
found to be defective, without cost to the owner, providing you
return the unit to the factory or to a Decatur authorized warranty
service center.
The full warranty on parts and workmanship does not include
normal wear and tear, crushing, dropping, re, impact, immersion,
over-tightening of screws or damage from attempted repair or
modications by unauthorized service agents.
For repairs, simply return the unit (transportation prepaid) directly to
the factory or to a Decatur authorized warranty service center. Refer
to section 14 Service Return Procedure.
TWO-YEAR WARRANTY EXCEPTION
If you purchased the unit under a special buying program, such as a
provincial purchase contract, etc., the above warranty may not apply.
Please refer to the buying program contract for the appropriate
warranty terms or contact Decatur Electronics.
If you are interested in an extended warranty contact your sales
representative to discuss options.
14. Service Return Procedure
If you have questions, want a quick problem diagnosis, or need to
return your radar unit to the factory:
• Call Decatur Electronics Customer Service and ask to speak with
a Customer Service Representative. Have the serial number of
the radar unit ready.
Phone: [phone]
Fax: [phone]
If you need to return your radar unit to Decatur Electronics:
• Ask to arrange for a Return Authorization Number. You will need
to give the serial number of the radar that is to be serviced. The
serial number is located on the bottom of the handle.
• Return ALL of the radar's parts in the original packaging
(transportation prepaid).
• If so directed, include a note describing the problem and/or the
incident that resulted in the problem. Failure to do so can delay
the return of your radar device.
• Based on the information that you have given, the Customer
Service Representative will issue you a return authorization (RA)
number. Write the RA number on your note and shipping label.
• Return the system to:
Decatur Electronics, Inc.
3433 East Wood Street
Phoenix, AZ 85040 USA
RA# XXXXXX
The customer is responsible for the shipping charges to send the
system to Decatur Electronics.
If we receive a system from a customer COD that is still under
warranty, we will charge the customer for the amount of COD freight
charges plus an additional 10% for handling after we repair the
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system. Also, we will add COD and a 10% handling fee to the repair
bill for out-of-warranty repairs.
The customer is responsible for all shipping charges to the Decatur
service location. Decatur does not accept incoming COD shipments.
Decatur Electronics will pay the freight (up to $10.00 US) for shipping
the system from the repair facility to the customer, providing the
system is still under warranty. We will charge the customer for any
shipping charges above the initial $10.00. If you want to ship your
package express or next day air, we will invoice you for these freight
charges.
If your radar is out of warranty and you would like to know the cost
of repair prior to the actual repair work being performed, Decatur
would be happy to give you a repair estimate. To obtain an estimate,
request it either on the paperwork you submit with the radar when
you send it in for service or when you obtain a Return Authorization
(RA) number. Decatur provides estimates only upon request.
The initial charge for an estimate is currently $50.00 US per unit if
your radar gun is not under warranty plus the return shipping and
handling fees. If, after reviewing the estimate cost, you decide not to
have your radar repaired, you will be invoiced $50.00 as a minimum
charge. If you decide to have your radar gun repaired, you do not
owe the estimated charge (the charge is waived) and only pay the
amount stated in the estimate.
15. How to Order Additional Products
You can order upgrades to the GHD or to the SCOUT (when available)
as well as cases, power supplies, tripods, and tuning forks. To see
product descriptions or order products, see the Decatur Electronics
Web site at www.DecaturRadar.com or call the sales oce at
800.428.4315.
16. Communications Port
The RS232 communications port (COM) is located on the bottom
of the handle right next to where the power cable plugs in. The
serial communication has the following characteristics (8:n:1) and is
transmit only:
One (1) start bit
Eight (8) data bits
No parity
One (1) stop bit
Transmission at 1200 baud
The unit transmits data as ASCII symbols in the following digit
sequence:
ASCII [hundreds][tens][ones]
Carriage return<CR>
(<CR> = ASCII decimal value 13)
The radar unit sends the data in this sequence when the TARGET
speed display changes. When you press the LOCK button, the radar
transmits the following digital sequence:
[hundreds][tens][ones]<CR>
(<CR> = ASCII decimal value 13)
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User Notes:
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