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23

2.

OTHER DISPLAY FEATURES

1)

To display TOTAL AREA covered, momentarily depress key labelled
To "zero out" this total at any time, enter a "0" in this key.

2)

To display TOTAL VOLUME applied, momentarily depress key labelled
To "zero out" this total at any time, enter a "0" in this key.

3)

To display FIELD AREA covered, momentarily depress key labelled
To "zero out" this total at any time, enter a "0" in this key.

4)

To display FIELD VOLUME applied, momentarily depress key labelled
To "zero out" this total at any time, enter a "0" in this key.

5)

To display DISTANCE (feet) [meters] traveled, momentarily depress key labelled

 .  To

"zero out" this total at any time, enter a "0" in this key.

6)

To display SPEED, momentarily depress key labelled

7)

To display VOL/MIN, momentarily depress key labelled

8)

To display AREA/HOUR, momentarily depress key labelled

This is an actual calculation of AREA/HOUR at the present speed you are going.  It is not an average
over a period of time.

9)

To display selections after US, SI, or TU; SP1 or SP2; and C-Sd, C-F, C-FC, or C-P have been

selected, depress and continue to hold

 .   Selections will alternate in the display window.

3.

SELF TEST FEATURE

SELF-TEST allows speed simulation for testing the system while vehicle is not moving.  Enter the

simulated operating speed in key labelled 

 .  If 6 MPH [10 km/h] is desired, enter 6.0 [10.0].

Verify SPEED by depressing key labelled

 .  The SELF-TEST speed will clear itself when

motion of vehicle is detected by the Speed Sensor.  A SPEED CAL value of 900 [230] or greater is
recommended when operating in this mode.

NOTE:

To prevent nuisance clearing of self-test speed, disconnect speed connector on
back of Console when Radar Speed Sensors are used.

Содержание SCS 661

Страница 1: ...SCS 661 FOR LIQUID AND GRANULAR APPLICATIONS INSTALLATION AND SERVICE MANUAL ...

Страница 2: ...W A R N I N G Disconnect console before jump starting charging battery or welding on equipment ...

Страница 3: ......

Страница 4: ... ...

Страница 5: ... distributor or to Raven for final approval WHAT WILL RAVEN INDUSTRIES DO When our inspection proves the warranty claim we will at our option repair or replace the defective part and pay for return freight WHAT DOES THIS WARRANTY NOT COVER RavenIndustrieswillnotassumeanyexpenseorliabilityforrepairsmade outside our plant without written consent We are not responsible for damagetoanyassociatedequipm...

Страница 6: ...Manual Rev D SCS 661 LIQ 07 02 016 0159 744 ...

Страница 7: ... CAL 13 5 CALCULATING SPREADER CONSTANT 14 6 CALCULATING VALVE CAL 15 7 CALCULATING RATE 1 AND RATE 2 CAL 16 CONSOLEPROGRAMMING 18 1 INITIALCONSOLEPROGRAMMING 19 2 OTHER DISPLAY FEATURES 23 3 SELF TEST FEATURE 23 4 VOLUME MINUTE RATE FAULT 24 5 VOLUME AREA RATE ALARM 24 6 LOW TANK FAULT 24 7 AUTOMATIC RATE 24 8 CONTROL VALVE DELAY 25 9 SEQUENCE TO ACTIVATE DATA LOCK 25 10 SEQUENCE TO CHANGE DATA L...

Страница 8: ...EDURE TO RE CALIBRATE FLOW METER 43 5 FAN RPM SENSOR INSTALLATION 44 6 BIN LEVEL SENSOR INSTALLATION 45 7 SERIAL INTERFACE 46 8 SCS 661 COMMUNICATION STRINGS 47 9 VERIFICATION OF SPREADER CONSTANT 48 10 WHEEL DRIVE SPEED SENSOR INSTALLATION CALIBRATION PROCEDURE 49 11 SPEEDOMETER DRIVE SPEED SENSOR INSTALLATION AND CALIBRATION PROCEDURE 52 REPLACEMENT PARTS SHEETS ...

Страница 9: ...mm 0 039 inch 1 centimeter cm 0 393 inch 1 meter m 3 281 feet 1 kilometer km 0 621 mile 1 inch 25 4 millimeters 2 54 centimeters 1 mile 1 609 kilometers PRESSURE 1 psi 6 89 kPa 1 kPa 0 145 psi AREA 1 square meter 10 764 square feet 1 hectare ha 2 471 acres 10 000 square meters 1 acre 0 405 hectare 43 560 square feet 1 square mile 640 acres 258 9 hectares GPM Gallons per minute lit min Liters per m...

Страница 10: ...tare ha 2 471 acres 10 000 square meters 1 acre 0 405 hectare 43 560 square feet 1 square mile 640 acres 258 9 hectares VOLUME 1 cubic meter 1000 liters 1 cubic centimeter 1 milliliter PPM Pounds per minute kg min Kilograms per minute PPA Pounds per acre kg ha Kilograms per hectare PPK Pounds per 1 000 sq ft mm Millimeters cm Centimeters dm Decimeters m Meter MPH Miles per hour km Kilometers km h ...

Страница 11: ...her Speed Sensors are also available For liquid systems the Motorized Control Valve and Flow Meter mount to the framework supporting the Boom Valves For granular systems the Hydraulic Control Valve mounts to the framework of the vehicle and the Encoder mounts to the conveyor drive shaft Appropriate cabling is furnished for field installation The operator sets the target volume per area to be spray...

Страница 12: ...l to the ground from front to back Radar can be tilted out 0 15 degrees to provide more clearance and miss obstructions See Figure 2 c The radar should be mounted so that the length of the radar is parallel with direction of vehicle travel 3 Use carpenters level to verify that mounting bracket is parallel to the ground 4 Bolt mounting bracket to implement 5 Bolt radar to mounting bracket using mou...

Страница 13: ... must be in direction of arrow on Flow Meter 3 MOUNTING THE CONTROL VALVE Liquid Applications 1 Mount the motorized Control Valve in the main hose line between the Flow Meter and the booms with motor in the upright position 2 Connect the Vehicle Cable connectors to boom valves Flow Meter and motorized Control Valve Black wire to boom valve 1 Brown to boom valve 2 Blue to boom valve 3 Blk wht to bo...

Страница 14: ...rease to Encoder shaft conveyor shaft and Encoder coupler fits 1 diameter conveyor shaft Secure coupler to Encoder and conveyor shafts with set screws provided 3 Install mounting tabs to Encoder as shown in Figure 5 Connect mounting tab to mounting bracket not provided to prevent Encoder from rotating DO NOT rigidly mount Encoder Encoder is to be supported by coupler ONLY FIGURE 5 ...

Страница 15: ...the Hydraulic Control Valve 2 Valve is to be mounted with motor in the upright position PNEUMATIC SYSTEM SPINNER SYSTEM CLOSED HYDRAULIC SYSTEM VARIABLE DISP PUMP FIGURE 9 FIGURE 8 FIGURE 7 FIGURE 6 OPEN HYDRAULIC SYSTEM FIXED DISP PUMP CLOSED HYDRAULIC SYSTEM VARIABLE DISP PUMP OPEN HYDRAULIC SYSTEM FIXED DISP PUMP ...

Страница 16: ...f the vehicle 2 Connect the Console Control Cable to the plug in the back of the Console See Figure 10 Route the Console Control Cable out of the vehicle cab and connect with vehicle connectors FIGURE 10 3 Secure Console Control Cable with plastic cable ties 4 Initial installation of the system is now complete ...

Страница 17: ...matic control ConsoleRevisioncanbedeterminedbyletter stamped in REV box on label ConsoleProgramcanbedeterminedbyletter stamped in PGM box on label CALIBRATION KEYS Used to enter data into the Console to calibrate the system BOOM CAL Width of Boom 1 10 Select Boom number by using the UP DOWN arrow keys SPEEDCAL Determined by Speed Sensor METERCAL Meter Calibration Number VALVE CAL Valve Response Ti...

Страница 18: ...01 and Right Boom will be displayed as b 10 if all 10 Booms are used Depressing this key after selecting BOOM CAL changes the boom number EXAMPLE b 01 will change to b 02 Depressing this key after selecting BOOM CAL changes the boom number EXAMPLE b 02 will change to b 01 Entering Boom Data 1 Select desired boom number 2 Enter boom length as detailed under CALCULATING BOOM CAL section 3 If a boom ...

Страница 19: ...E reads 5000 980 Corrected SPEED CAL Old SPEED CAL x 5280 DISTANCE ENGLISH UNITS METRIC UNITS 598 x 5280 631 48 152 x 1000 155 5000 980 5 The number to enter for SPEED CAL is 631 155 6 Recheck the new SPEED CAL derived in Step 5 by repeating Steps 2 thru 5 4 CALCULATING METER CAL LIQUID APPLICATIONS 1 When calculating METER CAL refer to the Flow Meter calibration number which is stamped on the lab...

Страница 20: ...2 GH 7 inches 18 cm 3 GW 15 inches 38 cm 4 CPR 180 English US Spreader Constant 1 lb 180 x 1728 13 x 7 x 15 311 140 228 1365 Metric SI Spreader Constant 1 kg 180 x 100 000 33 x 18 x 38 18 000 000 797 22 572 Counts per one revolution of sensor CPR may be determined by entering a METER CAL of 10 enter 0 in TOTAL VOLUME and turning sensor exactly one revolution The number in TOTAL VOLUME will be the ...

Страница 21: ...Fast Brake Point Digit Sets the percent away from target rate at which the Control Valve motor begins turning at a slower rate so as not to overshoot the desired rate Range 0 to 9 0 5 1 10 9 90 Dead Band Digit Allowable difference between target and actual application rate where rate correction is not performed Range 1 to 9 1 1 9 9 6 CALCULATING VALVECAL The initial Control Valve calibration numbe...

Страница 22: ...in GPA lit ha x MPH km h x inches cm 5 940 60 000 EXAMPLE 1 Application Pressure 30 PSI 2 Target Application Rate 20 GPA 3 Target Speed 5 2 MPH 4 Nozzle Spacing 20 inches GPM 20 GPA x 5 2 MPH x 20 inches 35 5 940 Using GPM 35 and pressure 30 you would select tip number XR8004 from the chart below since it comes closest to providing the desired output VERIFYING FLOW RATE LIMITS The flow rate of spr...

Страница 23: ...te in lbs acre kg ha is entered as RATE CAL Consult the equipment manual to insure that the selected gate opening is capable of applying at this application rate NOTE The Spreader Constant must be recalculated anytime the gate opening is changed ...

Страница 24: ...y Depress the keys corresponding to the number you wish to enter i e 5 7 2 The numbers will be displayed as they are entered Complete the entry by again depressing the ENTER key CONSOLE PROGRAMMING When entering data into the Console the entry sequence is always the same NOTE DATA MUST BE ENTERED IN KEYS 3 THRU 8 ...

Страница 25: ...ily steps the DATA display from US to SI b Depressing momentarily steps the DATA display from SI to TU c Depressing momentarily steps the DATA display from TU to US 2 Selecting US SI or TU a To select US SI or TU step until the desired code is displayed in DATA display b Momentarily depress the DATA display will now display SP1 3 Display SP1 wheel drives etc or SP2 radar sensor a Depressing moment...

Страница 26: ... P to C Sd 8 Selecting C Sd C F C FC or C P a To select C Sd C F C FC or C P step until desired code is displayed in DATA display b Momentarily depress the DATA display will now display 0 9 Definition of Boom Calibration keys Depressing this key displays selected boom number in DATA display EXAMPLE Left Boom will be displayed as b 01 and Right Boom will be displayed as b 10 if all 10 Booms are use...

Страница 27: ... GPK for liquid or lbs acre kg ha for granular in key labelled 14 Enter the target RATE 2 GPA lit ha GPK for liquid or lbs acre kg ha for granular in key labelled If you do not use a second rate enter same rate as RATE 1 CAL NOTE RATE 2 should not be more than 20 different from RATE 1 or else spray pattern may suffer YOU HAVE NOW COMPLETED PROGRAMMING THE CONSOLE The flashing CAL will now extingui...

Страница 28: ... can be changed by the user A Enter POWER DOWN 1 Select POWER DOWN 2 Enter POWER DOWN when RATE display shows Pdn NOTE This is a 24 hour clock Therefore all time after 12 59 p m add 12 hours Thus 8 30 a m is entered as 8 30 but 1 30 p m is entered as 13 30 in the keyboard 2 ENTERING TIME DATE AND POWER DOWN Definition of Time Date and Power Down Key Depressing this key displays selected Time featu...

Страница 29: ...mentarily depress key labelled 8 To display AREA HOUR momentarily depress key labelled This is an actual calculation of AREA HOUR at the present speed you are going It is not an average over a period of time 9 To display selections after US SI or TU SP1 or SP2 and C Sd C F C FC or C P have been selected depress and continue to hold Selections will alternate in the display window 3 SELF TEST FEATUR...

Страница 30: ...crement value and EXAMPLE If rate is to change by 1 0 Enter a value of 1 0 for RATE When in RATE 1 or RATE 2 each time the INC DEC switch is positioned to INC the RATE CAL for that rate will increase by 1 0 Likewise when positioned to DEC the RATE CAL will decrease by 1 0 6 LOW TANK FAULT This feature will sound the alarm when the volume in the tank drops below an entered value The alarm will inte...

Страница 31: ...DATA LOCK is not desired omit Steps 9 10 and 11 The DATA LOCK CODE may be cleared by entering a code of 0 or by resetting Console 1 Depress the key into which you wish to enter data 2 Depress CODE message will appear Enter your DATA LOCK CODE If CODE is correct E will appear Now enter data normally To RESET Console Place POWER ON OFF switch to OFF depress and hold while placing the POWER ON OFF sw...

Страница 32: ... 1oFF LEFT SHAFT FAULT ON OFF Turns left shaft fault detector ON or OFF When fault detector is selected ON alarm sounds and RATE display flashes SHA1 if left shaft should be rotating but is not SHFT 2oFF RIGHT SHAFT FAULT ON OFF Turns right shaft fault detector ON or OFF When fault detector is selected ON alarm sounds and RATE display flashes SHA2 if right shaft should be rotating but is not bin o...

Страница 33: ...ndataloggingmode Thetriggerdetermineshowoftenactualratedata string See Appendix 8 for data communication string formats is sent to the serial port The trigger may be either feet meters or seconds UniT FT DATA LOGGER TRIGGER UNITS Used in data logging mode The trigger unit is selectable between feet meters or seconds dLoG oFF DATA LOGGER ON OFF Turns data logger ON or OFF oFHi 253 PWM VALVE HIGH OF...

Страница 34: ...n DATA display will show bEGn Print Field Begin 1 To Print Field Begin depress key labelled B RATE display will now show Prn and DATA display will show End Print Field End 1 To Print Field End depress key labelled 2 While End is displayed if Field Begin is required depress key labelled to toggle DATA display to BEGn C Momentarily depress to advance to AUDIBLE ALARM ON OFF 3 AUDIBLE ALARM ON OFF A ...

Страница 35: ...ce to FAN RPM 5 FAN RPM A RATE display will show FAn DATA display will show actual FAN RPM B Momentarily depress to advance to FCAL in liquid application mode or LEFT SHAFT FAULT ON OFF in granular application mode 6 LEFT SHAFT FAULT ON OFF A RATE display will show SHFT DATA display will show 1oFF B Depressing momentarily changes the DATA display between 1oFF and 1 on A value of 1 on means fault d...

Страница 36: ...ow on B Depressing momentarily changes the DATA display between on and oFF A value of on means alarm is enabled a value of oFF means alarm disabled C Momentarily depress to advance to GPS FILE REFERENCE 11 GPS FILE REFERENCE A RATE display will show FILE DATA display will show a 1 B Enter the GPS file number C Momentarily depress to advance to GPS OPTIONS 12 GPS OPTIONS A GPS is inactive when the ...

Страница 37: ...E programmed previously C Momentarily depress to advance to DATA LOGGER 17 DATA LOGGER ON OFF A The DATA LOGGER uses the communications strings listed in Appendix 8 to pass data out through the serial port The data is sent at a set time interval or a set distance traveled as determined by the values entered in the DATA LOGGER TRIGGER VALUE and DATA LOGGER TRIGGER UNITS Upon each trigger the Actual...

Страница 38: ...in oFLo by 10 E Repeat steps b c and d until system will not stop running when holding INC DEC switch to DEC F Decrease the number in oFLo by 10 G Hold INC DEC switch to DEC H Repeat steps f and g until system stops running I Decrease the number in oFLo by 10 Low Offset is now set J Momentarily depress to advance to PWM FREQUENCY 20 PWM FREQUENCY A RATE display will show FrEq DATA display will sho...

Страница 39: ...IFT SPREADER CONSTANT 0000 0000 0000 0000 0000 0000 000 0 00 00 0000 000 0 00 00 00 00 0000 000 0 0000 000 0 000 0 000 0 000 0 00 00 0000 000 0 00 00 00 00 0000 000 0 0000 000 0 000 0 000 0 000 0 00 00 0000 000 0 00 00 00 00 0000 000 0 0000 000 0 000 0 000 0 0000 0000 0000 000 0 0000 0000 0000 000 0 0000 000 0 0000 000 0 000 0 000 0 000 0 000 0 0000 0000 0000 0000 0000 000 0 0000 0000 0000 000 0 0...

Страница 40: ...ement pump is used set pressure relief valve PRV to 65 PSI 450 kPa 8 Verify that boom valves operate and that no nozzles are plugged by operating the BOOM ON OFF switches 9 Place all BOOM ON OFF switches to ON 10 Hold the MAN ADJ switch in INC position until pressure is at its maximum This assures that the motorized Control Valve is fully open Verify maximum pressure and RATE Pressure gauge is not...

Страница 41: ...ole 6 Enter into SELF TEST the normal operating speed 7 Place boom ON OFF switches to ON 8 Verify that each boom operates by operating boom ON OFF switches 9 Hold the INC DEC switch in INC position for approximately 12 seconds Note maximum rate displayed in RATE display 10 Hold the INC DEC switch in DEC position for approximately 12 seconds Note minimum rate displayed in RATE display 11 The target...

Страница 42: ...f the area totalizer 6 Verify area covered and volume used PREVENTIVE MAINTENANCE Preventive maintenance is most important to assure long life of the system The following maintenance procedures should be followed on a regular basis 1 Flush entire system with water after use of suspension type chemicals Failure to clean system can result in crystallization of chemicals which may plug the Flow Meter...

Страница 43: ...ace Processor Board Assembly 1 Return Console to your dealer to replace Face Plate Sub Assembly 1 Return Console to your Dealer to replace Face Plate Sub Assembly 1 Return Console to your Dealer to replace Face Plate Sub Assembly and or Processor Board Assembly 1 Return to your dealer for repair 1 Return to your dealer for repair 1 Check battery voltage and battery connections 1 Return Console to ...

Страница 44: ...numbers keyed in Console are correct Verify SPEED is registering accurately If SPEED is inaccurate refer to Troubleshooting Problem 11 or 12 2 In MAN manual operation verify that RATE display GPA holds constant If not refer to Troubleshooting Problem 18 3 InMAN manual operation checklowend and high end pressure range Pressure range must be per initial system setup If pressure cannot be adjusted ma...

Страница 45: ...tallation Manual 1 Disconnect Speed Sensor from Console 2 Check Flow Meter Cable for breaks and shorts SeeAppendix4fortestprocedure 3 Check internals of Flow Meter clean and adjust See Appendix 5 for Flow Meter cleaning and adjustments 4 Replace Flow Meter Transducer 1 Verify that arrow on Flow Meter is pointing in direction of flow See Appendixes 3 and 4 1 Replace motorized Control Valve 1 Replac...

Страница 46: ...1 Enter SPEED CAL number of 9999 in key labelled 2 Depress key labelled 3 With small jumper wire or paper clip short between pin 1 and pin 2 with a short no short motion Each time a contact is made the DISTANCE total should increase by increments of 1 or more counts 4 If DISTANCE does not increase remove the section of cable and repeat test at connector next closest to Console Replace defective ca...

Страница 47: ...does not increase remove the section of cable and repeat test at connector next closest to Console Replace defective cable as required 6 Perform above voltage checks 7 If all cables test good replace Flow Sensor NOTE After testing is complete re enter correct METER CAL numbers before application PIN DESIGNATIONS 2 o clock socket location is ground 10 o clock socket location is power 6 o clock sock...

Страница 48: ...nd spin turbine The turbine should spin freely with very little drag inside the turbine hub 5 If transducer assembly is replaced or if turbine stud is adjusted or replaced verify the turbine fit before reassembling Hold turbine hub with turbine on transducer Spin turbine by blowing on it Tighten turbine stub until turbine stalls Loosen turbine stud 1 3 turn The turbine should spin freely 6 Re asse...

Страница 49: ... VOLUME display before retesting NOTE For greatest precision set METER CAL to 100 and pump 100 gallons 378 liters of water 8 To verify Flow Meter calibration fill applicator tank with a predetermined amount of measured liquid i e 250 gallons DO NOT RELY ON GRADUATION NUMBERS MOLDED INTO APPLICATOR TANK Empty the applicator tank under normal operating conditions If the number displayed under TOTAL ...

Страница 50: ...an Sensor to fan sensor bracket with stainless steel bolt lock washer and nut Assemble fan sensor bracket to fan sensor mounting tab on box with stainless steel bolt lock washer and nut See Figure above Adjust fan sensor air gap between 040 and 080 inch 080 inch max ...

Страница 51: ...in accordance to bin construction Use the mounting plate as a template to mark the location for the holes Drill and deburr all holes Route the sensor cable and secure the mounting plate to the bin wall using U bolt protectors Route and connect the sensor cable connector to the flow cable connector Secure all cables with plastic cable ties ...

Страница 52: ...00 or 9600 Baud Rate NO Parity 8 Data Bits 2 Stop Bits b Data stream to Raven Console EXAMPLE Change RATE 1 to 123 4 R RC 1234 CR LF Decimal point is not sent from Remote Computer to Raven Console 3 Optional 9 pin to 9 pin cable pinout P N 115 0159 822 DSR 6 4 CTS 8 DTR 4 6 8 TXD 3 2 RXD 2 3 GND 5 5 RAVEN CONSOLE 9 PIN COMPUTER GPS 9 Pin RAVEN CONSOLE 9 PIN PRINTER 25 Pin Communication string Rate...

Страница 53: ...enoting revision level Calibration Strings R103 C1 switch_byte_1 switch_byte_2 boom_1_cal boom_2_cal boom_3_cal boom_4_cal boom_5_cal boom_6_cal boom_7_cal boom _8_cal boom_9_cal boom_10_cal speed_cal CR LF R103 C2 meter_cal spreader_constant CR LF R103 C3 valve_cal rate_1_cal rate_2_cal CR LF Bit Switch Byte 1 Switch Byte 2 0 boom 1 boom 8 1 boom 2 boom 9 2 boom 3 boom 10 3 boom 4 rate 1 4 boom 5...

Страница 54: ...ctual weight unloaded by re weighing the truck 6 Compare to the TOTAL VOLUME displayed by the Console 7 Perform the following calculation to correct the Spreader Constant if desired Corrected Spreader Constant old Spreader Constant x TOTAL VOLUME actual weight unloaded EXAMPLE old Spreader Constant 228 797 TOTAL VOLUME amount 2000 lbs 4400 kg actual weight unloaded 1950 lbs 4290 kg English US Corr...

Страница 55: ... be mounted in alternating red black order 4 Mount switch assembly to stationary column with the hardware provided See below The switch assembly need not pivot with the wheel 5 Position switch assembly so that as the wheel rotates the magnets pass across the center of the black molded switch assembly 6 Clearance gap between magnets and switch assembly must be between 1 4 inch 6 mm and 1 inch 25 mm...

Страница 56: ...etween each set of drilled holes must be equal within 1 8 3 mm to ensure accuracy of system RIMS WITH SIX HOLE STUD PATTERN Locate the center of the holes to be drilled by using the rim webbing as a guide Obtain a small piece of wood and cut to fit exactly over the web as shown Measure the length of the piece of wood and mark the center on one edge Using the center mark on the piece of wood mark e...

Страница 57: ... Console MEASURE CAREFULLY Be sure tire is properly inflated before measuring Measure tire in type of soil in which you will be spraying Circumference of tire will vary when measured in soft soil versus hard packed soil For best results measure several times and average the results Large tires and very low speed applications may require additional magnets to insure accurate speed readings Any even...

Страница 58: ...all into engine compartment 2 Install adapter and key on speedometer cable and connect to Transducer Assembly Some units do not use adapter and key 3 Connect Extension Cable to Transducer Assembly 4 Push Extension Cable through fire wall and re install on speedometer 5 Connect the cable on the Transducer Assembly to the Console 6 Secure all cables with plastic cable ties You are now ready to calib...

Страница 59: ... calculation Multiply the SPEED CAL by the target distance reading then divide the sum by the actual value in DISTANCE display This will give you the corrected value to enter for SPEED CAL You must round off to the nearest 3 digit whole number EXAMPLE SPEED CAL 612 155 Target distance reading 5280 1000 Assume the actual DISTANCE display reads 5000 980 ENGLISH UNITS METRIC UNITS 612 x 5280 646 3 15...

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