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Summary of Contents for Decatur Electronics SI-3
- Page 1 SI-3 ™ System Interface 3 User’s Manual Rev: 5-14-19...
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Page 2: Table Of Contents
Configuring the SI-3™ . . . . . . . . . . . . . . . . . . . - Page 3 Appendix A - SI-3 Serial Commands . . . . . . . . . . . . . . . . .
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Page 4: Welcome
The SI-3™ incorporates high performance and long range, with many leading features . We urge you to study this manual before using the SI-3™ so you can maximize the benefits of this sophisticated radar device . We believe you will be pleasantly surprised by the features and advantages . -
Page 5: About This Manual
• Opening the SI-3™ automatically voids any warranty still in effect . There are no user serviceable parts inside . • Do not expose the SI-3™ to excessive moisture . Never submerge the device . • Do not drop the SI-3™ on hard surfaces since damage could occur . -
Page 6: Receiving Inspection
2. Receiving Inspection • When you receive your SI-3™, inspect it for any freight damage that might have happened during shipping or unloading . Take pictures to document any damage . • Notify the freight company immediately of any damage, preferably while the driver is present . -
Page 7: Getting Started
The SI-3™ is a radar specifically designed to measure speeds and export that speed information as RS232 data via the attached serial cable . This allows the SI-3™ to be used for a wide range of applications such as Radar Speed Trailers, traffic speed data collection (when used with the Decatur EZ Stat™... -
Page 8: Optional Programming Cable
SI-3™ . The same end that plugs into the SI-3™ has a red wire that is connected to +12 VDC and a black wire that connects to ground . -
Page 9: Configuring The Si-3
• SI-3™ configuration USB Flash Drive (S785-1-0) • 12V power supply 4.2 Device Configuration 1 . Apply 12VDC power to the SI-3™ through the programming cable . Open and run the SI-3™ Config (configuration) program; the opening screen is shown in Figure 4 .2a . - Page 10 9600 . Press the "Connect" button near the top of the window . SI-3™ Config will query the RS232 line to see if an SI-3™ is connected to the computer . If it responds with the “Unable to...
- Page 11 PC and the SI- 3™ . 4 . If SI-3™ Config is able to connect to the SI-3™, the screen will appear as shown below in Figure 4 .2c . In this screen the information that appears accurately depicts the present configuration of the SI-3™...
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Page 12: Configuration Notes
4.4 Baud Rate The "Baud Rate" can be 1200, 2400, 4800, 9600, 19200, 38400, 57600, or 115200 bits per second . The SI-3™ always uses 8 bits, no parity, and one stop bit for its serial port configuration . 4.5 Measurement MPH = miles per hour, KPH = kilometers per hour, MPS = meters per second, and FPS = feet per second . -
Page 13: Target Select
. 4.12 Sensitivity The SI-3™ is shipped with a default "Sensitivity" of 9, this should work for most applications . The sensitivity can be increased for longer range or decreased for closer range . If the sensitivity is too low the... -
Page 14: Serial Protocol
<D>[SSS .]<cr> . Other protocols listed are used by Decatur for testing purposes . Zero Suppress When this value is selected the SI-3™ will not send any information over the RS232 port unless a vehicle is detected . -
Page 15: Start And Stop Output Buttons
. Example: The protocol is sending out "123 .4" If a command is sent to the SI-3™, the response may be 12OK3 .4" . For this reason it is recommended that the "Stop"... -
Page 16: Performance Tips
5. Performance Tips Understanding potential radar interference and what to do when it occurs can greatly increase the radar’s performance . 5.1 How Radar Works Determining an object’s speed begins with the radar transmitting a beam of microwave energy (radio waves) at an approaching or departing target . - Page 17 As the angle between the beam of the antenna and the target increases, the displayed speed decreases . Ideally, an angle of zero (0) degrees is preferable, because the displayed speed is the actual target speed . However, in all uses of police radar, the radar device is always at a slight angle to the target vehicle to avoid collisions .
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Page 18: Fan Interference
. If the SI-3™ is used inside of a building keep in mind that furnace and air conditioner fans can cause interference . To correct this, relocate the radar so it does not display spurious speeds or turn off the fan motor . -
Page 19: Scanning
5.2.7 Scanning The SI-3™ is designed to be used while attached to a solid mount 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 and is considered deliberate misuse of the system . -
Page 20: Testing The Device
. There is a one minute time window from when the SI-3™ is first powered on in which you can test the unit using a tuning fork . After one minute the SI-3™ switches to directional mode and the fork will no longer be read . -
Page 21: Care, Cleaning, And Storage
• When you are not using or transporting the device, store it in its original packaging • To clean the radar device, use a soft clean cloth, which is free of cleaning solutions 8. Specifications The SI-3™ is FCC Part 15 compliant . 8.1 Antenna Parameters K-Band Nominal transmission frequency 24 .150 GHz Nominal horizontal beamwidth 12°... -
Page 22: Legal Requirements
9. Legal Requirements 9.1 Documents... -
Page 23: Fcc Statement
. 10. Frequently Asked Questions (FAQ) Q. My SI-3™ 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 . If you still have this problem, contact Decatur Electronics . -
Page 24: Warranty
11. Warranty ONE-YEAR RADAR WARRANTY The SI-3™ is guaranteed to be free from defects in workmanship and material and to operate within specifications for a period of one year . During this period we will repair or replace, at our option, any component found to be defective, without cost to the owner;... -
Page 25: Service Return Procedure
If you have questions, want a quick problem diagnosis, or need to return your unit or a component from your unit: • Call Decatur Electronics by phoning 800 .428 .4315 and ask to speak with a Customer Service Representative . -
Page 26: How To Order Additional Products
. The program has been design to work specifically with the SI-3™ . For more information on the Radar Monitor contact the sales offices at Decatur Electronics . -
Page 27: Appendix A - Si-3 Serial Commands
Appendix A SI-3 Serial Commands Commands transmitted to the SI-3 unit will be variable length messages in ASCII followed by a carriage return <CR> or <decimal 13> . Messages received by the unit will be followed by an acknowledgment ASCII “OK” . To save new settings into permanent flash memory, an ASCII “F”... - Page 28 Set target report Send ASCII T,X,<CR> Where ASCII value X = 0 -> All targets, X = 1 -> All directional, X = 2 -> Towards, X = 3 -> Away Radar responds back with ASCII “OK”,<LF>,<CR> Set horizontal Cosine Angle Send ASCII H,XX,<CR>...
- Page 29 Set speed alarm Send ASCII A,XXX,<CR> Where XXX = speed alarm in ASCII format Radar responds back with ASCII “OK”,<LF>,<CR> Set protocol Send ASCII P,XX,<CR> Where XX = serial port protocol 00 to 99 XX = 00 -> none XX = 01 -> standard output for that model XX = 02 ->...
- Page 30 Reset to factory defaults Send ASCII X,<CR> or ASCII x,<CR> Radar will reset all configure items back to factory defaults and save to flash . Radar responds back with ASCII “FACTORY DEFAULTS”,<LF>,<CR> if successful . Save configure items to FLASH Send ASCII F,<CR>...
- Page 31 www.DecaturElectronics.com 800 . 4 28 . 4 315...
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