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Decatur Electronics Surface Velocity Radar SVR2-01 User Manual

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SVR
™
Surface Velocity Radar
SVR2-01
User's Manual
Rev 12/8/2016

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Summary of Contents for Decatur Electronics Surface Velocity Radar SVR2-01

  • Page 1 ™ Surface Velocity Radar SVR2-01 User’s Manual Rev 12/8/2016...
  • Page 3 ™ Surface Velocity Radar SVR2-01 User’s Manual...

  • Page 4: Table Of Contents

    Welcome to Decatur Electronics . . . . . . . . . . . . . . . . . .
  • Page 5 Measuring Surface Velocity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 6 .1 Introduction .

  • Page 6: Welcome To Decatur Electronics

    Welcome to Decatur Electronics, Inc. Thank you for choosing this Decatur Electronics product—the SVR™, an advanced surface velocity radar (SVR) device for measuring water surface velocity . The SVR™ 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 7: About This Manual

    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 .
  • Page 8 • Opening the SVR™ (other than battery replacement) automatically voids any warranty still in effect . There are no user serviceable parts inside . • Do not expose the SVR™ to excessive moisture. Never submerge the device . If the SVR should accidentally get submerged be sure and remove the batteries immediately . • Do not drop the SVR™ on hard surfaces since damage could occur .

  • Page 9: Receiving Inspection

    2. Receiving Inspection • When you receive your radar, inspect all components for 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 .

  • Page 10: Getting Started

    3. Getting Started 3.1 Introduction The SVR™ is a hand-held surface velocity radar (SVR™) gun specifically designed to measure the surface velocity of water—great for use in streams and rivers . Features such as Recall allows you to review the previous measurement .

  • Page 11: Battery Installation

    Figure 3.3 Slide the battery door open . 3.4 Battery Installation Insert the batteries into the battery holder following the polarity guide that is on the inside of the battery holder (Figure 3 .4a .) Once properly loaded the battery holder will look like the example in Figure 3 .4b .

  • Page 12: Charging The Batteries

    Figure 3.5 Insert batteries . Once the batteries have been properly loaded into the holder and the holder has been inserted into the handle of the gun then the door can be put back in place and slid closed . If you have not already charged the batteries using an optional NiMH charger, you are now ready to charge the batteries using the power cable .

  • Page 13: Charging Status Indicator (Led)

    Figure 3.6 Align the dots . Next, plug the lighter plug into an active cigarette lighter receptacle in the vehicle . The red led on the lighter plug should come on showing that power is being applied to the SVR™ . With the SVR™ turned off, it will take approximately 2 hours to fully charge the batteries .

  • Page 14: Battery Run Time

    Figure 3.7 Charge status indicator . The normal charging sequence is fast blink for 60 seconds, medium blink until batteries are fully charged (approximately 2 hours for fully discharged batteries) and solid green once batteries are charged . The gun can be left to charge indefinitely . The charging circuit will automatically shut off once charging is complete .

  • Page 15: Auto Power Off

    3.8.1 Auto Power Off If no trigger or key press is detected the SVR™ will automatically power off after 50 minutes in order to conserve battery life . 3.9 Replacing Batteries When replacing the batteries with new ones remember to use only rechargeable Nickel-Metal-Hydride batteries and to replace ALL the batteries at the same time even if you suspect that only one battery is bad .

  • Page 16: Components

    4. Components 4.1 Control Buttons Figure 4.1a Faceplate (Display and Control Buttons) Looking at the control buttons from left to right the buttons have the following functions: MENU The MENU button lets you view the options you can change . Repeatedly pressing the MENU button advances through the programmable features .

  • Page 17: Display

    When the recall button (RCL) is pressed the unit enters recall mode if the following are true: • The unit is not transmitting • All 10 measurements have been completed and the speed result has been displayed The function is active if the letter "r" appears on the left-hand side of the display . Up to 15 previous readings can be reviewed . MODE The MODE button lets you change the resolution of the display .
  • Page 18 POWER When POWER appears, the power is on . LOW BAT The LOW BAT icon indicates that your internal batteries (or your separate battery pack) may be low on power . The system will not transmit or display any new speeds while LOW BAT appears and the display will remain blank .

  • Page 19: Trigger

    4.3 Trigger The radar transmits and receives microwave energy when you pull the trigger . To measure the flow velocity, pull and release the trigger . The radar will continue to transmit even though the trigger is now released . See Section 6 .2 - Taking a Measurement . 4.4 Mounting Configurations The radar is designed for hand-held operation .
  • Page 20 Table 5.1 Menu Settings...

  • Page 21: Backlight

    5.1.1 Backlight Use the backlight function to turn the SVR's™ display backlight on or off . Turning the backlight off when not needed saves battery power . Figure 5.1.1 Backlight mode 5.1.2 Display Function COS Use COS (cosine) to adjust the cosine correction angle for the horizontal (yaw) angle (the valid range is 0°...

  • Page 22: Display Function U

    5.1.3 Display Function U Sets the units of measure that speed will be displayed in . Choose “EUr” to display for meters-per-second (m/s) or “USA” to display feet-per-second (f/s) . Figure 5.1.3 Units mode 5.1.4 Display Function A – Vertical Angle Display Used to verify that the SVR™...

  • Page 23: Display Function Sen

    5.1.5 Display Function SEN – Sensitivity Display and Adjustment Higher numbers tell the gun to pickup surface velocity from a further distance . Lower numbers reduce the distance . If the sensitivity is too high the indicated velocity may be unpredictable and erratic .

  • Page 24: Serial Port Protocol Selection

    5.1.7 Serial Port Protocol Selection Used to select which serial protocol the SVR is to use when sending information to the serial port . Pressing the SEL button switches between Sr1 and Sr2 . Figure 5.1.7c Figure 5.1.7b Figure 5.1.7a Sr2 selection Sr1 selection Serial Port Mode...

  • Page 25: Measuring Surface Velocity

    6. Measuring Surface Velocity 6.1 Introduction To begin a velocity measurement, point the radar gun at the water and pull and release the trigger (there is no need to hold the trigger in) . The surface velocity can be measured flowing toward or away from the gun .
  • Page 26 SVR™ focuses its data processing . Towards the end of the first 10 seconds, the displayed velocity will be accurate . (Do not pull the trigger again or the measurement cycle will be terminated .) • After 10 seconds the dash ( - ) is replaced by the number "0" (zero) indicating that the next measurement cycle has started . The speed shown is the average velocity over the last 10 seconds and will remain in the display until the current measurement cycle is completed .
  • Page 27 Figure 6.2 The average of all 10 measurements (Display is set to show in 10ths) . NOTE If there are fluctuations of more than 0 .5 to 0 .8 f/s (0 .15 to 0 .24 m/s) during a measurement interval, it is advised to review the final value .

  • Page 28: Recalling Previous Readings

    6.3 Recalling Previous Readings The SVR will store up to 50 readings . To display the previous readings press and release the RCL button . The last reading taken will be displayed on the screen . Figure 6 .3a shows an example . The "0" in the left hand corner of the display indicates the last reading .

  • Page 29: Angle Compensation

    To recall additional readings, press the RCL button again . Each press will cycle the next reading, then clear the screen and then show the next reading as illustrated below . Once all stored readings have been displayed the cycle will begin again if the RCL button continues to be pressed .

  • Page 30: Vertical Angle Compensation

    7.1 Vertical Angle Compensation Figure 7.1 The SVR™ tilted pitch-down at 60º vertical angle The SVR's™ internal tilt sensor automatically compensates for the vertical angle at which you aim the gun to the target, up to 60° . You do not need to manually set the tilt sensor . However, you must hold the gun still at a constant vertical angle while taking a velocity measurement .

  • Page 31: Horizontal Angle Compensation

    Figure 7.1 The display when the vertical (pitch-down) angle exceeds 60º The vertical cosine angle will always be calibrated at the factory and should never need calibration in the field . However, the vertical angle of the SVR™ can be verified as being correct at any time . To do so refer to the section 5 .1 .4 Display Function A –...

  • Page 32: Communications Port

    Now the gun is set at this angle selection and remains in this mode until you change it . This setting will appear the next time you enter this menu option . Figure 7.2 The horizontal angle setting for 5º 8.

  • Page 33: Performance Tips

    One (1) start bit, Eight (8) data bits, No parity, One (1) stop bit . Transmission at 19200 baud and transmits data as ASCII symbols . The Sr1 protocol is SSS .S<cr> (sent once every second during measurement cycle) . The Sr2 protocol is AAA,RRR .RR,SSS .SS<CR>...

  • Page 34: Interference Sources And Remedies

    When you point the SVR™ about 10 feet (3 meters) from the water surface, it measures an elliptical beam pattern of 2 feet (61 cm) in diameter . Keep this in mind when making measurements of a stream width . Take several readings to completely cover the full width of the stream .
  • Page 35 Figure 9.2.1 An angular error occurs when the target's path is not parallel to the radar antenna . Small angles (less than 10°) have little effect on accuracy . As the angle increases, the displayed target velocity erroneously decreases, as the following table, Table 9 .2 .1, shows .

  • Page 36: Electromagnetic Interference (Emi)

    Table 9 .2 .1 shows the actual velocities (in the left column) and the velocity that displays (columns on the right) if you have not adjusted the radar gun for the horizontal (yaw) angle . Note that for angles less than 10°, the cosine error effect on the velocity is minimal . Also, note that the table reflects only the cosine error from the horizontal angle .

  • Page 37: Environmental Factors: Wind, Rain, Snow

    9.2.6 Environmental Factors: Wind, Rain, & Snow Wind moving across a water surface can produce waves, which result in movement differing from the main direction of the water flow . In high-velocity water flow, this effect is minimal or non-existent and does not affect the measurement .

  • Page 38: Specifications

    11. Specifications 11.1 Measurement Specifications Lo Minimum Velocity 1 fps (0 .3 m/s) Lo Maximum Velocity 30 fps (9 .1 m/s) Hi Minimum Velocity 2 fps (0 .6 m/s) Hi Maximum Velocity 65 fps (20 m/s) Measurement Accuracy 5% of Reading Units of measure can be set to read in feet per second (fps) or meters per second (m/s).

  • Page 39: Voltages

    11.5 Voltages Supply Voltage Range 8 .5VDC – 16 .5VDC Power Supply Frequency replaceable NiMH batteries Low Voltage Threshold 6 .1VDC (battery) 8 .5VDC (cord) 11.6 Power Consumption Standby .105 amperes Antenna ON .170 amperes no target displayed Antenna ON .172 amperes anything displayed Antenna OFF...

  • Page 40: Legal Requirements

    VALID ONLY for the equipment identified hereon for use under the Commission’s Rules and Regulations listed below . FCC IDENTIFIER HTRCR-1KD Name of Grantee Decatur Electronics Inc Equipment Class: Part 15 Field Disturbance Sensor Notes: Traffic Safety Radar...

  • Page 41: Frequently Asked Questions (Faq)

    13. Frequently Asked Questions (FAQ) Q . My surface velocity measurement reading is much higher than the last time I took a reading . A . If the water surface is smooth with very little or no roughness, the SVR™ is possibly not receiving enough returning radar energy from it .
  • Page 42 A . Check for wind effect occurring on the water surface . Wind can affect the measurement of low velocities, as example below 2 fps ( .60 m/s) . If possible, make the measurement in two directions, one of the water flowing toward the gun and one away from the gun .

  • Page 43: Warranty

    Decatur Electronics, Inc . guarantees the radar to be free from defects in workmanship and material and to operate within specifications for a period of two years . During this period, Decatur Electronics will repair or replace, at its option, any component (excluding batteries) found to be defective, without cost to the owner, providing you return the unit to a Decatur authorized warranty service center .

  • Page 44: Service Return Procedure

    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 U .S .) for shipping the system from the Service Provider to the customer .

  • Page 45: How To Order Additional Products

    You can order upgrades to the SVR™ (when available) as well as cases, battery packs, and tripods . To see product descriptions or order products, see the Decatur Electronics Web site at www . DecaturElectronics .com or call the sales office at 800 .428 .4315 .

  • Page 46: User Notes

    USER NOTES...
  • Page 48 www.DecaturElectronics.com 3433 East Wood Street, Phoenix, Arizona 85040, USA 800 .428 .4315 | 217 .428 .4315 | Fax 217 .428 .5302...

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