Decatur Electronics SI-3 Manuale utente
User’s Manual
Rev: 5-14-19
SI-3™
System Interface 3
Table of Contents
Welcome .............................................................6
About This Manual ....................................................7
1 Safety Information ....................................................7
2 Receiving Inspection ..................................................8
3 Getting Started .......................................................9
3.1 Introduction ......................................................9
3.2 Connecting The Serial Cable.......................................9
3.3 Optional Programming Cable ....................................10
3.4 Mounting Conguration .........................................10
4 Conguring the SI-3™ ................................................11
4.1 Equipment Needed ..............................................11
4.2 Device Conguration ............................................11
4.3 Conguration Notes .............................................14
4.4 Baud Rate .......................................................14
4.5 Measurement....................................................14
4.6 Min/Max Speed ..................................................14
4.7 Target Report ....................................................14
4.8 Target Select.....................................................15
4.9 Cosine Horizontal and Cosine Vertical.............................15
4.10 Update Rate ....................................................15
4.11 Hold Time and Speed Lock ......................................15
4.12 Sensitivity ......................................................15
4.13 Serial Protocol ..................................................16
4.14 Start and Stop Output Buttons ..................................17
4.15 Radar On/O Button ............................................17
5 Performance Tips ....................................................18
5.1 How Radar Works ................................................18
5.2 Interference Sources .............................................18
5.2.1 Angular Interference (Cosine Eect) ............................18
5.2.2 Fan Interference ...............................................20
5.2.3 Electromagnetic Interference (EMI) .............................20
5.2.4 Feedback Interference .........................................20
5.2.5 Multi-Path Beam Cancellation ..................................20
5.2.6 Radio Frequency Interference (RFI) .............................20
5.2.7 Scanning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.2.8 Environmental Factors: Wind, Rain, Snow .......................21
6 Testing The Device ...................................................22
6.1 Tuning Fork Test .................................................22
7 Care, Cleaning, and Storage ..........................................23
8 Specications ........................................................23
8.1 Antenna Parameters .............................................23
8.2 Environment ....................................................23
8.3 Speed Range Parameters ........................................23
8.4 Power Consumption ............................................23
9 Legal Requirements ..................................................24
9.1 Documents .....................................................24
9.2 FCC Statement..................................................25
9.3 Conditions......................................................25
9.4 Installer Note ....................................................25
9.5 End User Note ...................................................25
10 Frequently Asked Questions (FAQ) ....................................25
11 Warranty.............................................................26
12 Service Return Procedure.............................................27
13 How To Order Additional Products ....................................28
Appendix A - SI-3 Serial Commands .......................................29
SI-3™User’s Manual
4
Welcome To Decatur Electronics, Inc.!
Thank you for choosing this Decatur Electronics product—the
System Interface 3 (SI-3)™, a highly advanced directional radar unit
that will reward your department with years of dependable service.
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 benets 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, pole signs and the Responder™ line of in-car video
systems.
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
SI-3™User’s Manual
5
About This Manual
This manual contains valuable information to help you set up, use
and maintain your radar, so you can optimize 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.
WARNINGS
• Do not over voltage the radar - it can damage the unit!
• The SI-3™ is designed to operate o of conventional
+12 VDC (+10.8 to +16.5 VDC) from the serial cable.
Important Warnings
• Opening the SI-3™ automatically voids any warranty
still in eect. 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. Units damaged by dropping or abuse are
not covered for warranty repair.
Violation of these guidelines may void the warranty.
SI-3™User’s Manual
6
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. 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.
SI-3™ S785-1-0
Programming USB Drive
S900-34
Tuning Fork
S769-127-0
Optional - Programming cable
SI-3™User’s Manual
7
3. Getting Started
3.1 Introduction
The SI-3™ is a radar specically 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, trac speed data
collection (when used with the Decatur EZ Stat™ data logger) or
other uses where speed monitoring is desired. The SI-3™ comes
with a Programming disk that allows the user to congure certain
parameters of the SI-3™ for specic applications. Refer to Chapter 4
for conguration information. Additionally, a Radar Monitor program
is also available that allows you to display speed information on your
computer and record that information to a text le for analysis.
3.2 Connecting the Serial Cable
The SI-3™ operates o of +12VDC and is equipped with a specialized
DB-9 serial connector that contains provisions for powering the unit.
When connecting the cable it is important to understand that unlike
standard RS232 serial connectors that have no +12VDC provisions
the SI-3's™ serial connector has two pins dedicated to B+ and ground
for the purpose of powering the unit. Figure 3.2 shows the pin
arrangement.
Figure 3.2
Front view SI-3™Serial Connector
Pin 1 = +12VDC (power) (red wire)
Pin 2 = RS232 TX (white wire)
Pin 3 = RS232 RX (green wire)
Pin 4, 6 ,7 = N/C
Pin 5 = RS232 Ground (brown wire))
Pin 8 = Remote ON (blue wire)
Pin 9 = Ground (power) (black wire)
SI-3™User’s Manual
8
3.3 Optional Programming Cable
For conguring and testing purposes a programming cable is
available. The cable is designed with two DB-9 connectors and a
black and red wire for supplying B+ and ground to the SI-3™. One
end of the cable plugs into the serial port of a computer and the
other end into the 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. A regulated power supply can be used to supply the +12
VDC. Once the programming software is installed on the computer
then the SI-3™ can be accessed and parameters changed to meet
your application. Refer to Chapter 4 for programming information.
Figure 3.3
Optional Programming Cable
3.4 Mounting Conguration
The SI-3™ utilizes a single mounting point designed for quick, easy
installation. A standard ¼ x 20 bolt is used to mount the SI-3™ .
Figure 3.4
S785-30-0
(3 foot cable)
SI-3™User’s Manual
9
4. Conguring the SI-3™
4.1 Equipment Needed
• SI-3™ radar device
• SI-3™ Programming cable (S769-127-0)
• PC with either a usable RS232 serial port or a USB-to-RS232
adapter.
• RS232 cable to connect between the Power and
Communications adapter and the PC (if needed). This cable is a
9-pin RS232 cable with a male connector on one end and female
connector on the other.
• SI-3™ conguration USB Flash Drive (S785-1-0)
• 12V power supply
4.2 Device Conguration
1. Apply 12VDC power to the SI-3™ through the programming
cable. Open and run the SI-3™ Cong (conguration) program;
the opening screen is shown in Figure 4.2a.
Figure 4.2a
Opening Screen
SI-3™User’s Manual
10
2. The SI-3™ is designed to be connected to the computer's serial
port. However if you do not have a serial port and are using a
USB to Serial adapter make sure the adapter has been installed
per the instructions that came with it. Next, connect the SI-3™
to the computer through the adapter and check the Device
Manager, Ports. The port assignment will appear as "USB Serial
Port". Note the port assignment. The example in Figure 4.2b
shows that Port 4 has been assigned. Your port assignment may
be dierent and the port assignment can change the next time
the USB to Serial adapter is plugged in.
Figure 4.2b
Device Manager screen
2. From the Conguration Program screen select the COM port
that your PC has assigned. If you are connecting through the
computer's serial port, it will normally be "Com 1" or "Com 2". If
you are using the USB to Serial adapter, use the port shown in
Device Manager/Ports.
3. Change the baud rate if necessary – the SI-3™ default baud
rate is 9600. Press the "Connect" button near the top of the
window. SI-3™ Cong will query the RS232 line to see if an SI-3™
is connected to the computer. If it responds with the“Unable to
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