Decatur Electronics G3 User Manual & Installation Manual Download Page 9

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About This Manual

TThis 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 .

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 .

Summary of Contents for G3

Page 2: ......

Page 3: ...G3 User s Manual Installation Guide CanadaVariant Revision 7 October 2020 ...

Page 4: ...onnecting to the On Board Diagnostic Port 21 2 5 3 VIP Activation 22 2 5 4 Configuring the VIP 23 3 0 Operating the G3 24 3 1 Power 24 3 2 Front and Rear Antenna 25 3 3 Stationary Both Mode 26 3 3 1 Using Directional Antennas 26 3 4 Moving Mode Opposite Direction 30 3 5 Moving Mode Same Direction 31 3 6 Fastest Mode 32 3 7 Locking a Speed 33 3 8 Range Setting 34 3 9 Stopwatch Operation Mode 35 4 0...

Page 5: ... Shadowing 55 8 2 10 Motor Vehicle Ignition Interference 56 9 0 Field Tests 56 9 1 Operator Requested Self Test 56 9 2 Road Test 59 10 0 Care Cleaning and Storage 60 11 0 Specifications 61 11 1 Mechanical 61 11 2 Antenna 61 11 3 Environment 61 11 4 Power Consumption 62 11 5 Speed Range 62 12 0 ISED Information 63 13 0 Radiation Exposure Statement 64 13 1 Canadian Industry Certificates of Technical...

Page 6: ...Appendix A Communications Port 71 Appendix B Communications Port Serial Protocols 72 Appendix C Menu Features 73 User Notes 74 ...

Page 7: ...n optimize the benefits of this sophisticated radar device We believe you will be pleasantly surprised by the features and advantages The G3 is small dependable and features instant target acquisition If you are as pleased with its performance as we think you will be ask your Decatur sales representative about other Decatur products Traffic officers told us exactly what they wanted in a radar devi...

Page 8: ...d lock as well as more precise tracking and speed measurement If space in your motor 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 specific needs The IR remote controls all of the functions of the radar unit The remote features convenient eyes off ra...

Page 9: ...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 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 ...

Page 10: ...al 7 October 2020 10 Your G3 radar unit includes selections from the following components Detachable Computer Display Unit IR Hand Remote Ka Band Directional Antenna Various Connector Cables Optional VIP Various Mounting Brackets ...

Page 11: ... the MODE button to quickly toggle between Moving Mode Opposite Direction and Moving Mode Same Direction Press and hold the MODE button for two seconds to activate Stationary Mode Press and hold the FAST button to select Faster Mode when you want to track the faster motor vehicles In Moving Mode Same Direction setting G3 will automatically perform addition or subtraction relative to the patrol spe...

Page 12: ... 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 display from the computer unit locate and remove the two display retaining screws Green Arrows using a 7 64 hex tool Figure 2 1a Separating the computer display unit Figure 2 1b Usi...

Page 13: ...pieces with the 9 pin connector cable Figure 2 1c To connect the separated unit first insert the standoffs to secure the cable connectors Then attach and secure the connectors with the thumbscrews on the sides of each cable connector 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 standof...

Page 14: ...n temperature extremes Dash mounting the unit promotes safety you can read the display without taking your eyes off the road 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 After the...

Page 15: ...lug into the auxiliary power source If the power source is on it may damage the unit The power cable has a 12 volt power plug cigar plug on one end Make sure the plug fits securely in the motor vehicle s auxiliary power cigarette lighter receptacle Attached the other end to the power connector by aligning the cable so the black dot is up and press until it clicks To remove press the black dot and ...

Page 16: ...or computer unit To attach an antenna cable 1 Align the antenna cable Ethernet connector with the receptacle 2 Push the connector into the receptacle until you hear a click 3 To remove the connector press down on the top cable plug latch and pull apart Figure 2 2d Align the latch on the top of the Ethernet plug with the notch on the computer Ethernet receptacle WARNINGS Only use factory authorized...

Page 17: ...ting and Connecting the Antenna 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 3a A front mount antenna using the P...

Page 18: ...ld Test the antenna location for good performance and for any fan interference Once the considerations listed above have been observed make sure that the windshield glass is properly cleaned and prepared To remove the suction cup bracket first release the seal by pulling up on the tab on the rubber suction cup Antenna Alignment After you affix the bracket to the windshield adjust the position of t...

Page 19: ...se only the mounting hardware provided Damage to the antenna housing can occur if you use incorrect fasteners Do not modify the brackets Most brackets incorporate a ground isolator that prevents the metal housing of the antenna from coming into contact with the frame of the patrol motor vehicle Removal of the isolator can cause interference to be easily picked up diminishing performance To reduce ...

Page 20: ... are secure Then check for potential interference from sources such as the air conditioner heater fan 1 With all other motor vehicle accessories off turn on the heater air conditioner fan 2 Power up the radar by pressing the PWR button on the front display and select the front antenna by pressing the FRONT button 3 Cycle through the fan s low to high settings 4 If the unit displays a reading repos...

Page 21: ... Radar 2 5 2 Connecting to the On Board Diagnostic Port OBD II Connect the VIP to the motor vehicle s On Board Diagnostics port Refer to your owner s manual for the location of your motor vehicle s OBD II port In some motor 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 w...

Page 22: ...o not expose the VIP to excessive moisture or submerge the VIP If the LED is mostly off but flickers only occasionally there is an issue with the power being supplied to the VIP The VIP is in hibernation mode to conserve the motor vehicle s battery 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...

Page 23: ...utton several times until VIP is displayed in the locked fast window 3 Press the UP arrow front antenna or down arrow rear antenna button and make sure the word AUTO is showing in the patrol display 4 Press the MENU button again to exit the menu and save the setting The VIP is now be configured to the radar 2 5 5 How The VIP Helps Eliminates Shadowing In Moving mode the radar processes two speeds ...

Page 24: ...ain the G3 will switch the radar back to moving mode 3 0 Operating the G3 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 segment check and internal circuitry verification If th...

Page 25: ...l not begin transmitting until you press an antenna button The antenna 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 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 ...

Page 26: ...ing Directional Antennas When using the directional antenna that come standard with the G3 you can use Stationary Approach Only or Stationary Recede Only Modes to isolate traffic in a one direction only Figure 3 3 1a Tracking a motor vehicle RECEDING away from a stationary patrol motor vehicle with the radar in Stationary Mode using the FRONT antenna There are three selections for stationary mode ...

Page 27: ... information in the patrol window as ALL for All targets APP for Approach only or REC for Receding only targets To select a Stationary Mode of operation press and hold the MODE button for two seconds After the Stationary All mode has been selected briefly press and release the MODE button a second time to select the Stationary Approach Only mode Pressing and releasing the MODE button a third time ...

Page 28: ...e target direction of travel Figure 3 3 1e Both up and down Arrows display in Stationary All Mode when front or rear antenna is selected When the radar is toggled into the Stationary Approach Only mode the up pointing or down pointing arrow to the right of the TARGET window will illuminate When using the FRONT antenna targets approaching the patrol will be represented by the arrow pointing down An...

Page 29: ...e Stationary Recede Only 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 1h While the FRONT antenna is selected the up pointing arrow is illuminated while tracking a reced...

Page 30: ... Direction setting to display the speed of a target moving in the opposite direction 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 3 4a A patrol motor vehicle that is tracking a target motor vehicle with the rear antenna while traveling with the radar unit in Moving Mode Opposite Di...

Page 31: ...aneously 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 3 5 Moving Mode Same Direction To display the speed of targets traveling the same direction as the patrol motor...

Page 32: ...the patrol motor vehicle in same direction mode The G3 uses directional antennas so there is no need to manually select faster or slower modes in same direction The G3 does this automatically for you 3 6 Fastest Mode The FAST button activates the Fastest Mode modifying the operation of the Stationary Moving Mode Opposite Direction and Same Direction modes The Fast light illuminates when you press ...

Page 33: ...tly displayed 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 This lets you continue to track the history of the target To clear a locked speed do one of the following Press the LOCK button when an antenna is transmitting and no target is present Change the operating mode Turn the antenna of...

Page 34: ...display Figure 3 8a The G3 front display showing range or sensitivity setting 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 minimum range then increase the range setting until you obtain a desired performance lev...

Page 35: ...have activated the stopwatch function Figure 3 9 The Locked window will display STW whenever the G3 is operating in the Stopwatch Mode The three numeric windows display time distance and speed TARGET WINDOW Calculated Speed in km h LOCKED WINDOW Distance in Meters PATROL WINDOW Time in Tenths of Seconds Example Distance Set to 402 Meters Time Measured 150 15 0 Seconds Calculated Speed 96 km h To m...

Page 36: ... and stop the timer The time will be counted and displayed in the PATRTOL window Each sequential number represents a tenth of a second 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 i...

Page 37: ... Display Unit Figure 4a The G3 front display The G3 display 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 Figure 4b The G3 rear interface ...

Page 38: ...ed The window is blank when the radar unit is in Stationary Mode or when the motor vehicle is traveling below the minimum patrol speed ERROR DISPLAY When an error occurs one of the following appears in the display windows LOW VOLT Low voltage 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 S...

Page 39: ...it 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 In standby mode not transmitting neither light is on LED icon FNT identifies the FRONT ant while LED icon RER identifies the REAR ant Figure 4 2 1b Antenna lights LCK Indicates when a target speed has been locked into the locked window Figure 4 2 1c Lock...

Page 40: ...R antenna will determine which up or down pointing arrow is illuminated Figure 4 2 1e TARGET Direction indicator lights LOCKED FAST DIRECTION INDICATORS Depending on the current radar state these indicators will report 1 In fastest operation Indicates what direction of travel the fastest target is moving relative to the patrol motor vehicle The active FRONT or REAR antenna will determine which up ...

Page 41: ...nual 7 October 2020 41 5 0 Antenna The G3 Ka band Directional antennas are incredibly strong yet compact and lightweight Figure 5a Front view of the G3 Ka directional antenna Figure 5b Rear view of the G3 Ka directional antenna ...

Page 42: ...G3 User s Installation Manual 7 October 2020 42 6 0 IR Remote Figure 6a The S795 41 0 IR remote control unit ...

Page 43: ...TEST Pressing and releasing 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 For more information on tests see Section 9 Field Tests VOLUME The 8 step volume control regulates the Doppler audio and system status tone be...

Page 44: ...continues to process and display target speeds in the TARGET window so you can continue to track the history of the target speed To clear a locked speed press the lock button on a bank target speed while an antenna is active change modes or deactivate and then re activate an antenna If you have the Patrol Speed Lock Recall and Blanking option pressing the LOCK button locks both the target and patr...

Page 45: ...ing radar menu range or sensitivity display b SQELCH Sets squelch mode Selects the type of Doppler audio you hear In squelch mode the sound heard is only from the Doppler tone for the currently displayed target In unsquelched mode the unit passes all Doppler tones interference and noise received from the antenna You typically use unsquelched audio when you listen for interference Press the front o...

Page 46: ...eadability To manually dim the display press the front or rear antenna to select a brightness level There are 8 levels of brightness 1 8 where 8 is the brightest setting Figure 6 1d The G3 front display showing menu DIM AUTO and MANUAL setting of 1 d BEEP Turns on or off the beep Press the front or rear antenna button to toggle between off and on Figure 6 1e The G3 front display showing menu Beep ...

Page 47: ...ing Selects harmonic display in the target window Target window will display _H_ during a patrol harmonic event display will normally be blank if this setting is OFF Press the front or rear antenna button to toggle between OFF default and ON Figure 6 1g The G3 front display showing harmonic display option g VIP AUTO or MANUAL setting AUTO for Automatic switching between Stationary and Moving mode ...

Page 48: ...G3 front display showing menu selection of CITY HIGHWAY use PATROL SPEED LOCK RECALL and BLANKING This option locks the patrol speed at the time you lock the target speed 1 In either moving mode press the LOCK button to lock both the target or patrol speeds 2 Turn the antenna off The locked patrol speed will appear in the PATROL window 3 To blank the patrol speed press the OPTN button Then press t...

Page 49: ...49 6 1 IR Remote Battery Replacement To add or replace batteries for the remote control turn the remote over and locate the battery cover Press the small detent as shown below and push forward Slide the cover off to expose the battery compartment ...

Page 50: ...eries as shown below Replace battery cover before placing remote back into service If the G3 is used in cold weather the alkaline batteries may not deliver enough current to drive the IR emitter properly In this case use a high quality Lithium AAA rated for low temperature A recommended battery is Energizer L92 Ultimate Lithium ...

Page 51: ...r vehicle When energy from this beam strikes a moving motor vehicle a small amount of the beam is reflected back to the antenna The reflected signal frequency shifts by an amount proportional to the speed of the target motor vehicle This is known as the Doppler Effect The radar device then determines the target motor vehicle speed from the difference in frequency between the reflected and transmit...

Page 52: ...xists when the 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 u...

Page 53: ... 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 To correct this relocate the radar antenna so it does not display spurious speeds or turn off the fan motor Fan interference can be probl...

Page 54: ...Cancellation If multi path beam cancellation occurs the target motor vehicle speed sporadically blinks and reappears at semi random intervals This type of interference occurs when the radar loses track of a target motor vehicle because the target is reflecting two or more signals which are interfering with each other The G3 is immune to multi path cancellation 8 2 7 Patrol Harmonics In all police ...

Page 55: ...dio 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 8 2 9 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 ...

Page 56: ...hese rare cases the radar can exhibit erratic readings especially when the motor vehicle s electrical system is operated under heavy load Wiring an accessory outlet directly to the battery minimizes the effect If you suspect your motor vehicle s electrical system contact Decatur Electronics Customer Service Department for more information 9 0 Field Tests You shall do the following tests to verify ...

Page 57: ...MULATION TEST The G3 verifies the speed accuracy using a series of synthesized Doppler frequencies corresponding to simulated speeds A patrol speed sequence of 55 85 and 100 km h is processed first followed by a target test sequence of 40 70 100 and 130 km h Patrol speed test sequence of 55 85 and 100 Figure 9 1b PATROL test sequence ...

Page 58: ...get speed test sequence of 40 70 100 and 130 Figure 9 1c TARGET test sequence CIRCUITRY TEST Checks the internal circuitry If the unit passes all internal checks the message TEST PASS displays in the display windows Figure 9 1d Successful circuitry test ...

Page 59: ...ad test on a level road 1 Verify that the antenna is aimed correctly and parallel to the direction of travel 2 Turn either the front or rear antenna on 3 Drive the patrol motor vehicle at a constant legal speed to verify that the speedometer reading and the patrol speed are within 1 display unit of each other 4 If the difference is greater than 1 display unit verify that the antenna is aligned cor...

Page 60: ...withstand temperature variations however only the antenna is weather resistant Insert and remove the connectors by following the correct connect and disconnect procedures WARNING In case your unit has a blown fuse please replace the fuse with another fuse rated at the same capacity DO NOT replace the fuse with a higher rated fuse since this may cause damage to the equipment and or the motor vehicl...

Page 61: ...Ka Band Directional Antenna Dimensions 7 16 cm x 8 9 cm Weight 0 25 kg 11 2 Antenna Ka Band Directional IACP type VI Nominal transmission frequency 35 500 GHz Nominal horizontal beamwidth 12 Polarization Circular Nominal microwave power output 15mW Maximum aperture power density 2mW cm2 11 3 Environment Ambient operating temperatures 30 C to 70 C Maximum humidity 90 R H at 37 C 11 4 Power Consumpt...

Page 62: ...11 5 Speed Range Stationary Mode Target 19 km h 337 km h Moving Mode Opposite Direction Patrol 8 km h 161 km h Target 19 km h Closure of 337 km h Moving Mode Same Direction Patrol 32 km h 160 km h Slower Target 19 km h 120 km h Faster Target 40 km h 281 km h The Moving Mode Same Direction target speed is computed as follows when tracking a slower target TS PS SS when tracking a faster target TS PS...

Page 63: ... void the user s authority to operate this equipment Industry Canada Regulatory Information CAN ICES 3 A NMB 3 A Cet appareil contient des émetteurs récepteurs exemptés de licence conformes aux RSS RSS d Innovation Sciences et Développement économique Canada Le fonctionnement est soumis aux deux conditions suivantes 1 Cet appareil ne doit pas causer d interférences 2 Cet appareil doit accepter tou...

Page 64: ...nt This equipment should be installed and operated with minimum distance 20 cm between the radiator and your body Déclaration d exposition aux radiations Cet équipement est conforme aux limites d exposition au rayonnement ISED établies pour un environnement non contrôlé Cet équipement doit être installé et utilisé à une distance minimale de 20 cm entre le radiateur et votre corps ...

Page 65: ...G3 User s Installation Manual 7 October 2020 65 13 1 Canadian Industry Certificates of Technical Acceptability ...

Page 66: ...G3 User s Installation Manual 7 October 2020 66 ...

Page 67: ...that no obstructions are in front of the antenna If the antenna still has poor range increase the range sensitivity level If this problem continues contact Decatur Electronics Q Does the G3 interface with in car video systems A Decatur s traffic safety radar devices will interface with various in car video systems using its SERIAL port Please call your in car video supplier to see if their device ...

Page 68: ...ding you return the unit to a Decatur authorized service provider The full warranty on parts and workmanship does not include normal wear and tear crushing dropping fire impact immersion damage from attempted repair modifications by unauthorized service agents or improper voltage and fusing including removal of the power plug THREE YEAR WARRANTY EXCEPTION If you purchased the radar unit under a sp...

Page 69: ...hipping express or next day air If you are referred to a Service Provider and your product is under warranty then once your product has been received the Service Provider will investigate the problem Once they have diagnosed the problem they will repair the product and return it to you If you are referred to a Service Provider and your unit is not under warranty then we recommend that you discuss ...

Page 70: ...s for both front and rear mounts Ka band Directional antenna S795 45 0 Antenna cables 3 ft 91 44 cm antenna cable P769 79503R 7 ft 2 13 meters antenna cable P769 79507R 10 ft 3 04 meters antenna cable P769 79510R 14 ft 4 26 meters antenna cable P769 79514R 25 ft 7 62 antenna cable P769 79525R Brackets Glue on windshield mounting bracket S773 235A 0 Deck mount mounts on flat surface S758 34 0 Detac...

Page 71: ...The pinout of the DB 9 serial connector is Pin 1 12 VDC auxiliary power out Pin 2 RS232 transmit out of G3 radar Pin 3 RS232 receive into the G3 radar Pin 4 VIP Vehicle Interface Protocol GEN 2 input into G3 radar Pin 5 Signal power ground Pin 6 No connection Pin 7 Speedometer pulse input Pin 8 No connection Pin 9 No connection Figure A Serial port pin out ...

Page 72: ... communication has the following characteristics 8N1 and is transmit only One 1 start bit Eight 8 data bits No parity One 1 stop bit Transmission at 1200 baud The G3 transmits data as ASCII symbols in the following digit sequence Target Patrol hundreds tens ones hundreds tens ones CR CR ASCII decimal value 13 The G3 sends the data in this sequence when the TARGET or PATROL speed display changes or...

Page 73: ...MAN ALL CTY HWY Function Range setting sensitivity setting Toggles squelch setting on or off Automatic or manual control of the display LED brightness Beep Beeps when button is pushed on the hand remote Default is ON Serial Port Communications Protocol Selects protocol for interfacing to MDT signs etc If ON radar will shohw H in center target window during a harmonic event If set to OFF radar will...

Page 74: ...G3 User s Installation Manual 7 October 2020 74 USER NOTES ...

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Page 76: ...www DecaturElectronics com 16990 Goldentop Road San Diego CA 92127 USA 800 428 4315 ...

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