Related Manuals for Decatur Electronics SVR DUAL
Summary of Contents for Decatur Electronics SVR DUAL
- Page 1 ™ SVR DUAL Surface Velocity Radar With Water Level Sensor User’s Manual Rev 5-2-19...
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Page 2: Table Of Contents
4 .4 .14 Serial Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 4 .5 Loading New Firmware & Configuring the SVR Dual™ . . . . . . . . . . . . . 24 4 .6 Configuration Notes . - Page 3 Performance Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 5 .1 How Radar Works .
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Page 4: Welcome
Thank you for choosing this Decatur Electronics product—the SVR Dual™ is a highly advanced, low profile, surface velocity radar (SVR) with a water level sensor . The SVR Dual™ is extremely valuable for measuring water surface velocity during high-velocity flows and flood conditions where using contact measurement instruments poses a risk to safety . -
Page 5: About This Manual
All service needs should be referred back to the manufacturer . WARNINGS • Do not over voltage the radar - it can damage the unit! • The SVR Dual™ is designed to operate off of standard +12 VDC (+9 VDC to +24 VDC) from the serial cable . WARNINGS •... -
Page 6: Receiving Inspection
2. Receiving Inspection When you receive your SVR Dual™: • 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
RS232 data via the special serial cable . This allows the SVR Dual™ to be used for a wide range of water applications . The SVR Dual™ comes with software on a flash drive that allows the user to configure certain parameters of the SVR Dual™... -
Page 8: Connecting The Standard Serial Cable
3.3 Connecting the Standard Serial Cable The SVR Dual™ operates off of +12VDC and comes with a cable that has two connectors . The circular connector plugs into the SVR Dual™ and the DB-9 serial connector (shown in Figure 3 .2b) is used for powering and communicating with the SVR Dual™... -
Page 9: Mounting Configuration
The following examples show standard mounting and positioning of the SVR Dual™ . It is important to make sure that the unit is parallel with the surface of the water . If need, a level can be placed on the unit to insure level . -
Page 10: Mounting Options
3.6 Mounting Options Shown below are the various mounting options for the SVR Dual . It is important to remember that which ever option is chosen that the SVR Dual be kept parallel with the water surface . Vertical Mounting Option Figure 3.6a... -
Page 11: Configuring The Svr Dual
4. Configuring the SVR Dual™ If you are needing to program the SVR Dual™ and it is not yet connected to a system that will provide the 12 VDC needed to power it then the S769-78614-0 programming cable may be needed . Refer to Section 14 .2 for more information regarding the cable . - Page 12 Figure 4.3a Configuration Program screen 2 . The SVR Dual™ Configuration Program is designed to automatically recognize the assigned USB port . However, if for some reason it does not recognize the port you can find what port has been assigned by checking "Device Manager/ Ports" on your computer .
- Page 13 3 . From the Configuration Program/Com Serial Port Settings screen (Figure 4 .3c) click on the down arrow and 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"...
- Page 14 6 . Within 3 seconds of pressing the CONFIGURE button, apply power to the SVR Dual™ unit . 7 . The Configure program will bring up the "SVR Dual Configuration Items" dialog box . (Figure 4 .3f ) Figure 4.3f Configuration Items screen 8 .
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Page 15: Configuration Items Screen
4.4.2 Software Version & Unit ID Pre-set at the factory . 4.4.3 Measurement Select the speed format that the SVR Dual™ is to use . For the SVR application, only "fps" or "m/s" is recommended • Miles-per-hour - Select "mph"... -
Page 16: Target Report
15 and no speed above 15 will be processed . Likewise, if the SVR Dual™ is to be used where no speeds below 10 m/s need to be considered then setting the "MIN Speed" to 10 will cause the SVR Dual™... -
Page 17: Target Average
"Instantaneous" or up to 1,200 seconds . Figure 4.4.5 Target Report 4.4.6 Auto/Man Vertical COS Adjustment On the SVR Dual™ the Vertical COS Adjustment is disabled and will show the "Manual Vertical" button as having been selected . Figure 4.4.6 Vertical COS Selection... -
Page 18: Cosine Horizontal And Cosine Vertical
Horizontal Cosine settings When setting the cosine remember to take into account the cosine angle of the flow of the river . If the SVR Dual™ is installed so that it is aimed downstream then the cosine angle error is calculated as the difference between the vertical angle of the mounted SVR Dual™... -
Page 19: Hold Time
Figure 4.4.9 Update Rate 4.4.10 Sensitivity The SVR Dual™ has a sensitivity range of 1-100 and is shipped with the range setting at the (100) maximum . It is recommended that the setting be left at 100 . Figure 4.4.10 Sensitivity Setting 4.4.11 Water Distance Sensor Duty Cycle... -
Page 20: Rs485 Or 4-20 Ma Loop
4.4.13 Baud Rate The "Baud Rate" can be 1200, 2400, 4800, 9600, 19200, 38400, 57600, or 115200 bits per second . The SVR Dual™ always uses 8 bits, no parity, and one stop bit for its serial port configuration . The default baud rate is 9600 . - Page 21 The first option is "none" where no protocols are set . The first protocol [SS .SSS] represents the displayed speed . If a period is within the square brackets it is the decimal point . Any zeros are sent as described and do not change with the surface velocity’s speed .
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Page 22: Loading New Firmware & Configuring The Svr Dual
4.5 Loading New Firmware & Configuring the SVR Dual™ From time to time Decatur Electronics will release new firmware for the SVR Dual™ . If you have received new firmware then save the firmware to a file on your hard drive remembering the path to... - Page 23 . Connect the SVR Dual™ to your computer as described in Section 4 .2 . 1 . Open and run the Configuration Program; which is shown in Figure 4 .5a . Figure 4.5a Configuration Program screen 2 .
- Page 24 4 . Choose SELECT UNIT from Menu . Figure 4.5d Press the Select Unit button 5 . Choose "SVR" from drop down menu . Figure 4.5e Press the Select Unit button 6 . The SVR™ Dual Configure Items screen will appear . Select new options as desired .
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Page 25: Configuration Notes
9 . Press the "OPEN" button . 10 . Press the "Program and Configure" button if you want the SVR Dual™ to accept the changes that have been made to the Configuration Items screen and to program the SVR Dual™ with new firmware . -
Page 26: Surface Velocity Radar Svr Dual™ Command Set
4.7 Surface Velocity Radar SVR Dual™ Command Set Commands transmitted to the SVR Dual™ 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 the acknowledgment ASCII “OK”... - Page 27 Set Maximum Speed Send ASCII M XXX <CR> Where XXX = max speed in ASCII format Radar responds back with ASCII “OK MX” <CR> <LF> Set Minimum Speed Send ASCII m XXX <CR> Where XXX = minimum speed in ASCII format Radar responds back with ASCII “OK mX”...
- Page 28 Where X = 0 -> 1*sec, X = 1 -> 2*sec, X = 2->5*sec, X=3->8*sec, X=4->change only, X=5->poll Radar responds back with ASCII “OK UX” <CR> <LF> Set Sensitivity Send ASCII S X X <CR> Where X = Sensitivity in ASCII format (00 to 99 allowed) 99 is maximum value .
- Page 29 X = 5 -> Baud rate set to 34800 X = 6 -> Baud rate set to 57600 X = 7 -> Baud rate set to 115200 Radar responds back with ASCII “OK BX” <CR> <LF> Note: Settings will not be used until next power-on cycle . Set High/Low Speed Send ASCII L X <CR>...
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Page 30: How To Check Configure Settings
• Please wait 2 seconds after the last configuration command before disconnecting the power to allow the SVR Dual™ to record the setting in flash memory. 4.7.2 How To Check Configure Settings Send ASCII c <CR> Radar responds back with list of all configurable items and values . -
Page 31: Performance Tips
Sensitivity Setting Send ASCII cS <CR> Radar responds back with the current sensitivity setting Serial Protocol Setting Send ASCII cP <CR> Radar responds back with the current serial protocol setting Baud Rate Setting Send ASCII cB <CR> Radar responds back with the current baud rate setting High/Low Speed Setting Send ASCII cL <CR>... -
Page 32: Selecting The Correct Site
forms an elliptical pattern on the target area . The beam’s size depends on the distance between the antenna and the target . The horizontal beam width is 5 .5° . The detection area becomes larger as it becomes farther away from the antenna . The example below shows a spot size of approximately 2 feet (61 cm) in diameter . -
Page 33: Interference Sources And Remedies
The following diagrams show poor and good site locations that need to be considered when setting up the SVR . 5.3 Interference Sources and Remedies When properly installed and operated, Doppler radar technology is extremely accurate and reliable . However, variations in the environment can cause situations and circumstances, which can cause spurious (erratic and unusually low or high) velocities to... -
Page 34: Angular Interference (Cosine Effect)
display . Signs that a velocity is spurious can include the following characteristics: • a reading appears when no target is in the operational range of the antenna • interference is irregular and does not provide a valid target history 5.3.1 Angular Interference (Cosine Effect) The cosine effect causes the radar device to display a velocity which is lower than the actual water surface velocity . -
Page 35: Electromagnetic Interference (Emi)
SVR Dual™ must be operating very close to the radio transmitter . 5.3.6 Scanning The SVR Dual™ 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 as long as the antenna is held in one position and is not moved . -
Page 36: Environmental Factors: Wind, Rain, Snow
5.3.7 Environmental Factors: Rain & Snow Environmental factors such as rain or snow can reduce the distance at which a target can be detected; however, these factors will not affect accuracy . 6. Care, Cleaning, and Storage • Avoid spilling food, beverages, and other liquids and substances on the radar device . -
Page 37: Specifications
7. Specifications (Specifications are subject to change without notice .) 7.1 Antenna Parameters K-Band Transmission frequency 24 .075 - 24 .175 GHz (24 .150 GHz nominal) Beamwidth 6 .5° x 5 .5º @ -3dB point Polarization Linear Output power (EIRP) +20 dBm Power Density 114 .3 dBuV/m at 3 metres... -
Page 38: Water Distance Sensor Parameters
7.5 Water Distance Sensor Parameters (Specifications are subject to change without notice .) Transmitter frequency 61 GHZ Power Transmit 10 dBm Detection Distance 0 .05 to 35 meters Accuracy +/- 2mm Beam Width (horizontal & vertical) 8° Side Lobe Suppression (horizontal & vertical) 15dB Continuous operation or duty cycle (10% to 100%) over 1 minute - is set via configuration program... -
Page 39: Legal Requirements
8. Legal Requirements 8.1 Documents... -
Page 40: Fcc Statement
30 minutes . If the unit has been dropped, wipe the SVR Dual™ off (if dropped in water, make sure unit is dry) and check the unit to see if it is reading speeds . If the unit doesn’t... -
Page 41: Warranty
10. Warranty ONE-YEAR RADAR WARRANTY Decatur Electronics, Inc . guarantees the SVR Dual™ to be free from defects in workmanship and material and to operate within specifications for a period of one year . 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 part to a Decatur authorized warranty service center . -
Page 42: 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 43: How To Order Additional Products
. The MODBUS protocol is already programmed into the SVR Dual™ unit and can be selected via the configuration program as : A5SNSNSS .SSSCS HEX WITH CHECKSUM If this protocol is used, the serial number of the unit becomes the address of the sensor . -
Page 44: Appendix B - Cable Options
14. Appendix B - Cable Options Various cable options exist for the SVR Dual™ . 14.1 S769-78613U-0 This cable allows the user to wire the unit to their preference . A diagram and pin out appear below . Figure 14.1... - Page 45 www.DecaturElectronics.com 800 . 4 28 . 4 315...
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