G3 ™ User’s Manual & Installation Guide Rev 8/7/19
G3 ™ User’s Manual & Installation Guide
Table of Contents Contents G3™ Features ........................................................................................................................... 7 About This Manual ................................................................................................................... 8 1. Quick Start ........................................................................................... 10 2. Installation ................................................................................
. Antenna ............................................................................................... 40 6. IR Remote Controls .............................................................................. 41 6.1 Control Buttons .................................................................................. 42 7. Communication System Controls ......................................................... 48 8. Performance Tips .....................................................................
12.2 Radar Case Law ............................................................................................................. 69 13. Frequently Asked Questions (FAQ)....................................................... 70 14. Service................................................................................................. 72 14.1 Warranty ................................................................................................. 72 14.2 Service Return Procedure ...........................
G3™ Users & Installation Manual Welcome to Decatur Electronics, Inc. Thank you for choosing the Decatur Electronics G3™ — A highly advanced traffic radar unit that will reward your department with years of dependable service. The G3 design incorporates high performance and long range, with many leading features. We urge you to study this manual before using the G3, so you can optimize the benefits of this sophisticated radar device.
G3 ™ G3™ Features Users & Installation Manual The G3™ is a highly advanced traffic radar device offering many advanced capabilities. It includes 32-bit floating point digital signal processing (DSP), a versatile detachable computer/display unit, a Ka band directional antenna, and an easy-to-use Infrared (IR remote) control. It also features Faster Mode for detecting the next strongest target going faster than the strongest in multiple target situations.
Note the following symbols in this manual: Users & Installation Manual This manual contains valuable information to help you set up, use and maintain your G3™, 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. G3™ About This Manual Indicates a warning message about safety precautions. Please read it carefully. Indicates a helpful tip or precaution to note. [OPT] Indicates section refers to optional equipment.
G3 ™ Your G3™ radar unit includes selections from the following components: Users & Installation Manual Handheld IR Remote Detachable Computer/ Display Unit Ka Band Directional Antenna Various Connector Cables Various Mounting Brackets Optional VIP Tuning Forks 9
Use the following instructions to quick start your G3™: 2. Press the PWR button on the front display to power up the radar unit. The radar will run through a brief self-test which includes illuminating all display segments. Users & Installation Manual 1. With all cables and antennas attached, plug the cigar plug of the radar into a powered 12VDC cigarette lighter receptacle in the patrol vehicle. G3™ 1. Quick Start 3.
G3 ™ 2. Installation Use the following instructions to mount your G3™: User & Installation Manual 2.1 Separating the Computer/Display Unit (optional) If the space in your vehicle is at a premium, you will appreciate the G3™ 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.
G3 ™ User & Installation Manual Figure 2.1b Using a hex tool, remove the retaining screws. Pull the display from the computer and Note the 9-pin connectors on each half of the unit. Screw two standoffs (included with the radar) into the holes next to each connector on the display unit. These standoffs are used to attach the two pieces with the 9-pin connector cable. Figure 2.1c To connect the separated unit, first insert the standoffs to secure the cable connectors.
G3™ Then attach and secure the connectors with the thumbscrews on the sides of each cable connector. User & Installation Manual Figure 2.1d Secure the connecting cable by tightening the thumbscrews into the standoffs. To return the unit to a one-piece configuration, remove the cables and standoffs, line up the 9-pin connectors, push the two pieces together and secure with the two retaining screws. 2.2 Mounting and Connecting the Computer/Display.
User & Installation Manual To mount the unit, use the Velcro™ fastening material or the 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. G3 ™ 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.
G3™ 1. Align the antenna Ethernet connector with the receptacle. 2. Push the connector into the receptacle until you hear a click. User & Installation Manual 3. To remove the connector, press down on the top cable plug latch and pull apart. Figure 2.2b Align the latch on the top of the Ethernet plug with the notch on the computer Ethernet receptacle. Power connector WARNING • Be sure to plug the power connector into the computer unit first before plugging the power plug into the auxiliary power source.
The power cable has a larger 12-volt power plug (cigar plug) on one end. Make sure the plug fits securely in the vehicle’s auxiliary power (cigarette lighter) receptacle. Figure 2.2c The cigar plug for the auxiliary power receptacle. G3 ™ User & Installation Manual Antenna connector The antennas are connected to the computer unit with a standard CAT 7 shielded Ethernet cable. Either end of the cable can be used to connect to the antenna and computer unit. Figure 2.
User & Installation Manual Figure 2.3a A front mount antenna (Ka-band) using the P773-237 bracket G3™ 2.3 Mounting and Connecting the Antennas A variety of brackets are available. To attach the antennas to the standard brackets, align the threaded mounting hole on the antenna with the threaded post of the front antenna bracket and on the rear antenna bracket the threaded knob with the slot on the L-brace. Then screw the post or knob into the threaded mounting hole. Figure 2.
G3 ™ User & Installation Manual Antenna Alignment After you affix the bracket to the windshield, adjust the position of the antenna. ANY SIGNIFICANT DEVIATION FROM A PARALLEL ORIENTATION CAN AFFECT THE RADAR’S ACCURACY. Figure 2.3c Correct Orientation The antenna is parallel to the target vehicle's direction. Figure 2.3d Incorrect Orientation The antenna and target vehicle's direction are not parallel.
User & Installation Manual • 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. G3™ • Use only the mounting hardware provided. Damage to the antenna housing can occur if you use incorrect fasteners.
G3 ™ User & Installation Manual 4. If the unit displays a reading, reposition the antenna to eliminate it. Often, the far-left corner of the front windshield is an interference-free zone where you can place an antenna. 5. Repeat this process for the rear antenna. 2.5 VIP Installation (Option) If your G3 has come with the optional Vehicle Interface Portal™ (VIP™) then use the following installation instructions.
G3™ User & Installation Manual 2.5.2 Connecting to The On-Board Diagnostic Port Connect the VIP™ to the vehicle’s On Board Diagnostics port. (Refer to your owner’s manual for the location of your vehicle's OBD-II port.) In some vehicles the clearance between where the diagnostics port is located and the bottom of the dash is very close and can cause the port and VIP™ to be bumped by the officer’s leg when getting into the vehicle .
G3™ User & Installation Manual If the LED is on and the VIP™ is connected to a radar unit, then when the radar is turned on and it runs through its diagnostics routine it will show the message “VIP” as the last message on power up. Once the power-up routine has run correctly and the VIP™ message has been displayed, the next step is to make sure the G3 computer is configured properly. To do this have the vehicle running but stopped. With the VIP™ properly installed try to put the radar into moving mode.
The VIP™ is now be configured to the radar. G3 ™ User & Installation Manual 2.5.5 How The VIP™ Helps Performance Eliminates Shadowing In Moving mode, the radar processes two speeds - patrol and closing (target). The stronger of the two, the patrol speed, is created when the radar beam reflects from passing stationary objects, such as the pavement or terrain the vehicle is traveling on.
3. Operating the G3™ G3™ User & Installation Manual After you test and confirm that the unit is properly installed, it is ready for use. 3.1 Power The PWR button on the display turns the G3™ on and off whereas the PWR button on the IR remote only turns the G3™ off. After you press the PWR button, the display illuminates with a display segment check and internal circuitry verification. If the power-up checks pass, the radar will set itself to the last operational mode prior to being powdered off.
G3 ™ User & Installation Manual 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 IR remote activate and deactivate the antennas. The FRONT or REAR icons will illuminate when that particular antenna is transmitting. Figure 3.2b The FRONT or REAR light illuminates when that antenna is transmitting. To discontinue transmitting (to place the radar back into standby mode), press the same (ANT) button.
G3 ™ User & Installation Manual Figure 3.3a Tracking a target vehicle with a parked patrol vehicle and the radar in Stationary Mode. 3.3.1 Using Directional Antennas When using directional antennas, you can use Stationary Mode to also select a specific direction of traffic (Approach or Recede) to monitor. Figure 3.3.1a Tracking a vehicle RECEDING away from a stationary patrol vehicle with the radar in Stationary Mode using the FRONT antenna.
Stationary Approach Only tracks vehicles approaching the patrol vehicle. Stationary Recede Only tracks vehicles receding away from the patrol vehicle. User & Installation Manual Stationary Both Tracks vehicles approaching or receding away from the patrol vehicle. G3 ™ There are three selections for stationary mode: To select a Stationary Mode of operation, press and hold the MODE button for two seconds.
G3™ User & Installation Manual After the “Stationary Both” mode has been selected, briefly press and release the MODE button a second time to select the “Stationary Approach” mode. Pressing and releasing the MODE button a third time will select the “Stationary Recede” mode. Pressing and releasing the MODE button a fourth time will cycle to the moving opposite mode of operation.
G3 ™ User & Installation Manual When the radar is toggled into the “Stationary Recede” mode, the down pointing or up pointing arrow to the right of the TARGET window will illuminate. (When using the FRONT antenna, targets receding from the patrol will be represented by the arrow pointing up. An arrow will be pointing down when the REAR antenna is selected.) Figure 3.3.1e While the FRONT antenna is selected, the up pointing arrow is illuminated while tracking a receding vehicle. Figure 3.3.
G3™ User & Installation Manual 3.4 Moving Mode Opposite Direction Use the G3™ in the Moving Mode Opposite Direction setting to display the speed of a target moving in the opposite direction from the moving patrol vehicle. These targets will be moving towards the patrol (using the front antenna) or away from the patrol (using the rear antenna). Figure 3.4a A patrol vehicle that is tracking a target vehicle with the rear antenna while traveling with the radar unit in Moving Mode Opposite Direction.
G3 ™ User & Installation Manual Figure 3.4c While the REAR antenna is selected, the down pointing arrow is illuminated while tracking a receding vehicle in moving opposite mode. In moving opposite mode, the G3™ simultaneously processes and displays the patrol and target 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 vehicle is moving. 3.
G3 ™ User & Installation Manual Figure 3.5b While the FRONT antenna is selected, the down or up pointing arrow will be illuminated depending on whether the target vehicle is approaching or receding the patrol vehicle in same direction mode. Figure 3.5c While the REAR antenna is selected, the down or up pointing arrow will be illuminated depending on whether the target vehicle is receding or approaching the patrol vehicle in same direction mode.
62 MPH 61 MPH 67 MPH User & Installation Manual The Fast light illuminates when you press the FAST button on the IR remote. When activated, the radar will process faster or fastest targets (depending on what method is configured into the radar) and display these in the fast/lock window. In FAST mode, the radar processes the speed of the next strongest target signal going faster than the strongest reference signal.
G3 ™ User & Installation Manual 3.7 Lock a Speed Pressing the LOCK button transfers the target speed and direction information related to that target from 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. This lets you continue to track the history of the target. To clear a locked speed do one of the followingays: • Press the LOCK button when an antenna is transmitting and no target is present.
User & Installation Manual Press the FRONT antenna (+) or REAR antenna (-) to increase or decrease the range setting. The range value on the far right PATROL display will change. The maximum range setting is 5 while the minimum is 1. Initially, you will want to start with maximum range, then decrease the range setting until you obtain a desired performance level. For example, an officer would usually reduce range when operating within a city environment.
G3™ 4. Computer/Display Unit User’s & Installation Manual Figure 4a The G3™ front display. The G3™ display faceplate 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. Figure 4b The G3™ rear interface 4.1 Display Windows TARGET: Displays target speeds and is blank when no target is present.
• LOW VOLT low voltage User & Installation Manual ERROR DISPLAY: When an error occurs, one of the following appears in the display windows: G3 ™ PATROL: Displays the patrol speed. The window is blank when the radar unit is in Stationary Mode or when the vehicle is traveling below the minimum patrol speed. Figure 4.1a The G3™ front display showing LOW VOLT error display. • RFI radio frequency interference Figure 4.1b The G3™ front display showing RFI error display.
4.2 Indicator Lights G3 ™ User & Installation Manual 4.2.1 FAST: The FAST icon light is used to indicate when the radar is in faster or fastest mode. (This indicator will also illuminate when the fast button is pressed during the same direction fork test.) Pressing the FASTER button again will return the unit to normal operation and the FASTER light will shut off. Figure 4.2.1a The Fast light ANT FRONT and REAR: Indicates which antenna is transmitting.
G3 ™ User & Installation Manual Figure 4.2.1d OPP and SAME indicator lights TARGET DIRECTION INDICATORS: Indicates what direction of travel the target is moving relative to the patrol vehicle. The active FRONT or REAR antenna will determine which up or down pointing arrow is illuminated. Figure 4.2.
G3 ™ 5. Antenna User & Installation Manual The G3™ Ka-band Directional antennas are incredibly strong, yet compact and lightweight. The cables and connectors are also interchangeable between the antenna and computer unit. Figure 5a Front view of the G3™ Ka directional antenna. Figure 5b Rear view of the G3™ Ka directional antenna.
G3 ™ 6. IR Remote Controls User & Installation Manual Figure 6a The S795-41-0 IR remote-control unit.
G3™ User & Installation Manual • The IR remote control needs to be aimed in the general direction of the radar display to properly receive the IR signals. To help increase IR signal levels, the IR remote as a total of three transmitting devices. A transmitting device is located on the front near the FAST button while the other two are located on the front edge. 6.1 Control Buttons POWER (PWR): powers the G3™ off. The G3™ will save all user settings on power down.
User & Installation Manual Pressing and holding the test button while in same direction mode, activates the special FORK TEST mode. This feature allows the operator to test the directional radar antenna with a tuning fork. G3™ TEST (TEST): Pressing the TEST button starts an extensive self-test of the radar unit’s circuitry. During self-test, the system will not power down until the test is complete. If the self-test fails, the SYSTEM ERR message will appear in the radar windows.
G3 ™ target speed. User & Installation Manual MENU: Activates the primary menu on the G3. Used in conjunction with the OPTION button to cycle through the available options that are changeable. Pressing the MENU button again will exit the primary menu. MENU ITEMS: (a) SENS OR RANGE Sets the maximum range for the radar. Allowable settings are 1 through 5. Press the Front antenna button to increment through the settings or press the Rear antenna button to decrement through the settings. Figure 6.
G3 ™ User & Installation Manual (c) HWY CTY Sets the radar into HIGWAY or CITY mode. Press the front or rear antenna button to toggle between CITY and HIGHWAY. Figure 6.1c The G3™ front display showing menu Highway/City selection display. (d) LOW SPD Sets the radar to display target speeds down to 2 mph. Press the front or rear antenna button to toggle between 2 mph and 12 mph. Figure 6.1d The G3™ front display showing menu target low speed selection display. (e) BEEP Turns on or off the beep.
G3 ™ User & Installation Manual (f) UNITS Toggles between MPH and KPH. Press the front or rear antenna button to toggle between units. Figure 6.1f The G3™ front display showing menu speed units option selection display. (g) COM serial setting Selects serial output protocol. Press the front or rear antenna button to toggle between the selections. Figure 6.1g The G3™ front display showing serial communication protocol selection display. (h) FSTLCK - FAST LOCK Add description.
User & Installation Manual Figure 6.1i The G3™ front display showing menu Harmonic option selection display. G3 ™ (i) HARMNC - HARMONIC DISPLAY Allows radar to be set to display “H” in LOCKED window during a harmonic event. Press the front or rear antenna button to toggle between off and on. (j) SDSS – SAME DIRECTION SPEED SEPERATION SETTING Allows radar to be set to the minimum speed separation for same direction. Allowable selections are 3, 5 and 8 mph separation.
7. Communication System Controls G3 ™ User & Installation Manual You can configure the G3™ through the serial communications (COM) port on the rear panel to communicate with PCs, speed signs, and in-car video systems, such as the Decatur Electronics Responder 1000™ in-car video system . 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 configuration. 8.
• Speeds are irregular and do not provide valid tracking history. • Erroneous speeds appear to track with the engine speeds. 8.2.1 Angular Interference (Cosine Effect) When operating in the Stationary Mode, the cosine effect causes the radar unit to display a speed, which is lower than the actual vehicle speed. This condition exists when the target vehicle’s path is not parallel to the antenna, including conditions such as the vehicle traveling on a curve or a hill.
G3 ™ The following table shows the effect that an increasing angle has on a displayed speed. User & Installation Manual Horizontal Angle Degrees Actual Speed 0° 1° 3° 5° 10° 15° 20° 30° 45° 60° 90° 30 mph 30 29 29 29 29 28 28 26 21 15 0 40 mph 40 39 39 39 39 38 37 34 28 20 0 50 mph 50 49 49 49 49 48 46 43 35 25 0 60 mph 60 59 59 59 59 57 56 51 31 30 0 70 mph 80 mph 70 69 69 69 80 79 79 79 68 78 67 77 65 75 60 69 49 57 35 40 0 0 Displayed speed: Table 8.
User & Installation Manual • G3 ™ 8.2.2 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. To correct this, relocate the radar antenna so it does not display spurious speeds or turn off the fan motor. Fan interference can be problematic in Same Direction Mode and should be checked carefully. 8.2.
G3™ Antenna User & Installation Manual Computer INCORRECT: Some Feedback CORRECT: No Feedback INCORRECT: Full Feedback Figure 8.2.5a Correcting feedback interference. 8.2.6 Multi-Path Beam Cancellation If multi-path beam cancellation occurs, the target vehicle speed sporadically blinks and reappears at semi-random intervals. This type of interference occurs when the radar loses track of a target vehicle, because the target is reflecting two or more signals, which are interfering with each other.
G3 ™ User & Installation Manual 8.2.8 Radio Frequency Interference (RFI) The system can inadvertently process radio energy as Doppler speeds, including that from police radios, airport radar, microwave transmission towers, CB radio transmitters, and AM/ FM transmission towers . For this type of interference to occur, the radar unit must be operating very close to the radio transmitter. The G3™ contains an RFI detection circuit that detects excess radio frequency energy.
G3™ User & Installation Manual • The G3™ usually recognizes and ignores shadowing. On the rare occasion that it appears, turning the antenna on and off usually quickly remedies shadowing. 8.2.10 Vehicle Ignition Interference The G3™ has been designed to operate from the vehicle’s cigarette lighter receptacle. However, some vehicles exhibit excessive alternator noise at the lighter receptacle.
User & Installation Manual 9.2 Tuning Fork Test In addition to the system test, you can verify signal processing accuracy with a tuning fork. Test your G3™ with two tuning forks—a high and low speed fork. Each fork is labeled with which antenna to test with it.
G3™ User & Installation Manual 9.4 Stationary Mode Test 1. Place the radar unit in Stationary Mode. (If you are using directional antennas, be sure to select the Both Directions Stationary mode. There are no directional properties to a ringing tuning fork. If a stationary tuning fork test is done in either the approach or recede modes, the radar will generally ignore the tuning fork.) 2. Select maximum range and activate the antenna to be tested. 3.
3. Grasp the low speed tuning fork (the longer fork) by the handle. Tap the tines of the fork against a firm surface and hold it approximately three inches in front of the antenna. User & Installation Manual 2. Select maximum range and activate the antenna that you want to test. G3 ™ 9.5 Moving Mode Opposite Direction Test 1. Place the system in Moving Mode Opposite Direction. 4.
G3™ User & Installation Manual Figure 9.5b When testing the Ka-band antenna with the high and low tuning forks in Moving Mode Opposite Direction, the speeds in the display window should look like this. 9.6 Moving Mode Same Direction Test 9.6.1 Directional Antennas A tuning fork does not properly simulate the direction of a vehicle. When using directional antennas, the radar must be placed in a special tuning fork mode to perform the same direction tuning fork test. To activate this mode: 1.
User & Installation Manual 7. Then before the high-speed fork stops vibrating, tap the low speed fork (the longer fork) against a firm surface, and hold it approximately three inches away from and slightly above the first fork. The speed produced from the high-speed fork (shorter fork) will appear in the PATROL window, while the calculated TARGET speed will appear in the TARGET window. G3 ™ 6. Then grasp the high-speed tuning fork (the shorter fork) by the handle.
G3™ User & Installation Manual 9.7 Road Test After the radar unit passes the self-test and tuning fork tests, you may want to conduct a road test during each shift to confirm that the patrol vehicle’s speedometer matches the unit’s patrol speed. The road test verifies that the radar unit’s patrol speed and the vehicle speedometer are within ± 1 display unit of each other. You need to conduct the road test on a level road. 1.
• Avoid spilling food, beverages, and other liquids and substances • 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. User & Installation Manual on the radar device. G3 ™ 10. Care, Cleaning, and Storage • The G3™ can withstand temperature variations, however, only the antenna is weather resistant.
G3™ 11. Specifications User & Installation Manual 11.1 Mechanical Display Unit Dimensions Weight Computer Unit Dimensions Weight IR Remote Dimensions Weight Ka-Band Antenna Dimensions Weight 5 .25 in x 1 .45 in x .94 in (13 .33 cm x 3 .68 cm x 2 .38 cm) 3.90 oz (0 .11 kg) 5 .25 in x 1 .45 in x 2.5 in (13 .33 cm x 3 .68 cm x 6.35 cm) 9.8 oz (0 .45 kg) 4.56 in x 1.56 in x 1.12 in (11 .58 cm x 4 .00 cm x 2.84 cm) 2.40 oz (0.068 kg) 2.82 in x 3.5 in (7.16 cm x 8.9 cm) 8.75 oz (0 .
11.3 Environment Ambient operating temperatures Maximum humidity VI 35 000 GHz 12° Circular 15mW < 2 mW/cm2 User & Installation Manual Ka-Band IACP type Nominal transmission frequency Nominal horizontal beamwidth Polarization Nominal microwave power output Maximum aperture power density G3 ™ 11.
G3™ 11.4 Power Consumption Supply voltage range User & Installation Manual Low voltage threshold 10 .8 to 16 .5VDC with internal, resettable fuse 10 .8VDC with visual indicator Current draw with 13.6VDC applied in various modes: Standby (antenna OFF) 0 .17 amperes Ant. ON, no targets displayed 0 .33 amperes Ant. ON, 55 target displayed 0 .36 amperes Ant. ON, 20 target, 35 patrol 0.40 amperes Ant. OFF, segment check 888 888 888 0.45 amperes Ant. ON, segment check 888 888 888 0.60 amperes 11.
G3 ™ User & Installation Manual when tracking a slower target TS = PS – SS when tracking a faster target TS = PS + SS Where TS = Target Speed, PS = Patrol Speed and SS = Separation Speed, which must be at least 3 mph (4 km/h)*, but no greater than 75% of the patrol speed.
G3 ™ ISED Information User & Installation Manual This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions: (1) (2) This device may not cause interference. This device must accept any interference, including interference that may cause undesired operation of the device.
G3 ™ FCC Radiation Exposure Statement User & Installation Manual This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20 cm between the radiator and your body. Radiation Exposure Statement This equipment complies with ISED radiation exposure limits set forth for an uncontrolled environment.
G3 ™ Replace with FCC part 90 grant letter User & Installation Manual FEDERAL COMMUNICATIONS COMMISSION WASHINGTON, D .C .
G3 ™ User & Installation Manual 12.2 Radar Case Law Judicial notice is an elementary principal of law. The principal applies to facts that are common knowledge and states that it is not necessary to introduce evidence to prove what is common knowledge. The following landmark rulings have made it simpler to introduce radar speed measurements as evidence. 1. State v . Dantonio, June 1995, State of New Jersey. The New Jersey Supreme Court took judicial notice of the Doppler Principle.
G3™ 13. Frequently Asked Questions (FAQ) User & Installation Manual Q. My radar device will not power up. What should I do? A. Make sure the radar device is plugged into the power source and that the power source has power. Also, check to see if the LED light on the power plug is on and that the fuse in the power plug is working. If the unit still does not power up, contact Decatur Electronics. Q. My radar device has poor range. How can I remedy this? A.
Q. What upgrades are available now for my G3™? A. Contact Decatur Electronics Sales Department 800 .428 .4315 for upgrade information. Q. SYSTEM ERR appears in the display windows and nothing else works? A. If your unit has a system error, turn the unit off and on. If it still says SYSTEM ERR, contact Decatur Electronics. 71 User & Installation Manual Q. Does Decatur Electronics make speed trailers or speed signs? A. Yes, Decatur has a variety of speed signs and radar/message trailers—the OnSite™ series.
G3™ User & Installation Manual 14. Service 14.1 Warranty FIVE-YEAR RADAR WARRANTY Decatur Electronics, Inc. guarantees the G3™ to be free from defects in workmanship and material and to operate within specifications for a period of five* years. During this period, Decatur Electronics will repair or replace, at its option, any component, found to be defective, without cost to the owner providing you return the unit to a Decatur authorized service provider.
• Explain to the Customer Service Representative the problem you are experiencing. • Based on the information that you provide, the Customer Service Representative may be able to assist you or you may need to be referred to one of our Service Providers. On warranty items Decatur Electronics will pay the freight (up to $10 US) for shipping the system from the Service Provider to the customer.
G3 ™ 15. How to Order Additional Products User & Installation Manual You can order upgrades (when available) to the G3™ from Decatur Electronics as well as tuning forks, different cable lengths and mounting brackets . Contact the Decatur Electronics sales office at 800 .428 .4315. Antennas (for both front and rear mounts) Ka-band Directional antenna S795-45-0 Antenna cables 3-ft. antenna cable 7-ft. antenna cable 10-ft. antenna cable 14-ft. antenna cable 25-ft.
G3™ User & Installation Manual Appendix A: Communications Port The RS232 communications port (COM) is located on the rear panel of the computer unit.
G3 ™ Appendix B Menu Feature User & Installation Manual The menu feature allows the operator to fine tune some of the settings of the radar. To activate the menu feature, press and hold the TEST button down until MENU is displayed in the mode window. Pressing OPTN steps through the menu items and the antenna buttons change the settings. Pressing the TEST button again exits the menu feature and saves the settings.
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