6280H_Manuals 10/29/12 11:39 AM Page 1 Electronic Digital Theodolite with Laser Model No. 40-6936 Instruction Manual Congratulations on your choice of this Electronic Digital Theodolite with laser. We suggest you read this instruction manual thoroughly before using the instrument. Save this instruction manual for future use. This is a Class IIIa laser tool and is manufactured to comply with CFR 21, parts 1040.10 and 1040.11 as well as international safety rule IEC 285.
6280H_Manuals 10/29/12 11:39 AM Page 2 Table of Contents 1. Kit Contents 2. Features and Functions 3. Safety Instructions 4. Location/Content of Warning Labels 5. Location of Parts/Components 6. Operating Instructions 7. 8. 9. 10. 11. 12. 13. Using the Product Self-Check & Fine Calibration Technical Specifications Care and Handling Product Warranty Warranty Registration Accessories 1. Kit Contents Description for Model 40-6936 2 Qty.
6280H_Manuals 10/29/12 11:39 AM Page 3 2. Features and Functions • Electronic Thoedolite with dual-axis compensator and laser beam integrated in the telescope. Beam is focussable.
6280H_Manuals 10/29/12 11:39 AM Page 4 3. Safety Instructions Please read and understand all of the following instructions, prior to using this tool. Failure to do so, may void the warranty. DANGER! Class IIIa Laser Product Max. Power Output: ≤ 5mW Wavelength: 625-645nm THIS TOOL EMITS LASER RADIATION. DO NOT STARE INTO BEAM. AVOID DIRECT EYE EXPOSURE. ATTENTION IMPORTANT • Read all instructions prior to operating this laser tool. Do not remove any labels from tool.
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6280H_Manuals 10/29/12 11:39 AM Page 7 6. Operating Instructions IMPORTANT: It is the responsibility of the user to verify the calibration of the instrument before each use. 12 11 10 9 8 1 2 3 7 4 5 6 Display and Display Explanation 1. Ht - Total value of repeated angles measured 2. V - Vertical angle 3. Number of repeated measurements 4. AVG - Value of repeated angle measurements 5. HR - Angle increases with clockwise turning 6. HL - Angle increases with counterclockwise turning 7.
6280H_Manuals 10/29/12 11:39 AM Page 8 Note: If the display shows “b” after activating the tilt sensor, the instrument exceeds its compensation range and the instrument should be leveled.
6280H_Manuals 10/29/12 11:39 AM Page 9 Preparation Before Measurement Centering and Leveling with Optical Plummet • Level and center the instrument precisely to ensure its best performance. • Extend the tripod legs to a suitable working height with equal length legs. Spread the tripod legs and make the tripod head as level as possible while at the same time placing the center of the tripod head directly over the ground point.
6280H_Manuals 10/29/12 11:39 AM Page 10 • Rotate the leveling screw 1, 2 to move the bubble to the center line of circular level which is perpendicular to the connection line 1,2. • Rotate the leveling screw 3 to move the bubble to the center of the circular level. • Next use the Tubular Vial to accurately level the instrument. Unlock and turn the instrument so that the tubular vial is parallel to BC, any two leveling screws. Note the direction to turn the leveling screws in the graphic.
6280H_Manuals 10/29/12 11:39 AM Page 11 • Now check the ground point centering. If you are not directly on the point, carefully loosen the tripod fastener and move the instrument on the tripod head in an x - y direction. Do not rotate the instrument. Recheck leveling and repeat until instrument is level and over the ground point at the same time. With practice, this becomes easier.
6280H_Manuals 10/29/12 11:39 AM Page 12 7. Using the Product Turning on the Instrument Press the power key on the instrument for 2 seconds and all the symbols will be displayed on the LCD. The buzzer will sound twice and the horizontal angle value and “0-set” will be displayed. When “0-set” is displayed none of the key pads operate except for the power key. Rotate the telescope 360º to activate the vertical measuring mode and to activate the keypad.
6280H_Manuals 10/29/12 11:39 AM Page 13 Battery Replacement Remove Battery Box Battery Box Button Push down to remove the battery box Replace Alkaline Batteries • Push down the battery cover tab and pull the battery cover away from the battery box. • Take the old batteries out and put the new batteries in paying attention to the “+” and “-” pole. • Snap the battery cover back into place.
6280H_Manuals 10/29/12 11:39 AM Page 14 Rechargeable Batteries • Connect the charger to the AC outlet. Remove the battery box from the instrument and insert plug of charger into the recharge socket of battery box. A red indicator light on the charger means the instrument is recharging. A green light means the instrument is fully recharged. • The plug should be pulled out from the rechargeable battery box after the unit is recharged, the charger is equipped with an over-charge protective circuit.
6280H_Manuals 10/29/12 11:39 AM Page 15 Using the Telescope • Point the telescope at the target and focus the eyepiece until the crosshair can be seen clearly. • Aim the telescope coarsely using the targeting sight. Keep a slight distance between the targeting sight and your eye when aiming coarsely. • Focus the telescope by turning the focusing knob on the telescope. Horizontal Angle “0-set” 1. Aim at target “A” using crosshair in the telescope. 2.
6280H_Manuals 10/29/12 11:39 AM Page 16 Conversion between horizontal angle right (HR) and left (HL) rotation 1. Aim at a target “A” using the center of crosshair in the telescope. 2. Press the R/L key to change horizontal angle mode from HR to mode HL. 3. Measure in mode HL. • The R/L button has no effect to the vertical angle. • Press the R/L button again, and the horizontal angle is transformed back from HL to HR again. Holding the Horizontal Angle Press the HOLD button to hold the horizontal angle.
6280H_Manuals 10/29/12 11:39 AM Page 17 Measurement of Vertical Angle The angle position can be set as required in the initial setting. 0º 90º 90º 270º 0º 180º 180º 270º Display of Slope 1. Press the V/% key to switch the vertical measurement shown from degrees to percent of grade. 2. Press the V/% key again to switch from grade percent back to the vertical measurement shown in degrees.
6280H_Manuals 10/29/12 11:39 AM Page 18 Repeat Angle Measurement 1. Press the FUNC key. 2. Press the REP key to put the instrument in repeat mode. 3. Aim at the first target “A” and press the 0-set key once to set the first target reading 0º00’00”. 4. Rotate the instrument and aim at the second target “B”. 5. Press the HOLD key to hold the horizontal angle and store it in the instrument. 6. Rotate the instrument to aim at the target “A” again. Press R/L key to release the angle hold status. 7.
6280H_Manuals 10/29/12 11:39 AM Page 19 • The reading of horizontal angle can accumulate to reach +1999º59’59” when in repeat angle measurement mode. • Repeat measurement does not function if the angle between two targets is less than 30”. • The repeat measurement should be limited to 15 times when the instrument is in the repeat measuring mode, otherwise the error Err-04 will be shown. Start again from step 1.
6280H_Manuals 10/29/12 11:39 AM Page 20 Other Functions Measuring Distance Using the Stadia Method Read the leveling rod using the stadia hair on the reticule of the telescope. Multiply the reading by 100 to obtain the actual distance L from the target to the measured point. (100 is the multiplication constant error of the instrument, i.e. 1 = 1 x 100) Stadia Hair Tilt Sensor This theodolite is equipped with a tilt sensor.
6280H_Manuals 10/29/12 11:39 AM Page 21 Sound Function When the sound function is activated and the instrument is rotated, the instrument will sound when the horizontal angle passes 0°, 90°, 180°, & 270°. Please refer to “initial setting” chapter to set horizontal angle sound function. Backlight LCD Telescope Reticle and Timing Power-Off The display and telescope’s reticle on this theodolite are equipped with a lighting device. Press the FUNC key twice to turn on the light.
6280H_Manuals 10/29/12 11:39 AM Page 22 INITIAL SETTING Initial Setting Instruction The instrument has several settings for your option to meet different requirements of measuring. After your purchase and before your operation, do the initial setting for the instrument. Item Setting No.
6280H_Manuals 10/29/12 11:39 AM Page 23 Settings Power on the instrument, press the FUNC key once, then press the power key once. The instrument will enter the initial setting mode and will display as follows: Move to the digit required by using the Left or Right keys. Change the digit value using the up key. After changing the various settings, press the FUNC key once, and then press Power key once to exit the setting status and return back to the anglemeasuring function. The new settings will be saved.
6280H_Manuals 10/29/12 11:39 AM Page 24 Error Display Display Error Display & Explanation & Action b Instrument exceeds its self-leveling range, level the instrument again. Err-04 Difference between every measuring value exceeds 30” during the repeated angle measurement. Press “0-SET” key and measure again. Measuring times of repeated angle measurement is more than 15. Press “0-SET” to measure again.
6280H_Manuals 10/29/12 11:39 AM Page 25 8. Self-Check & Fine Calibration IMPORTANT: It is the responsibility of the user to verify the calibration of the instrument before each use. • Calibration should be carried out according to the following steps because each step’s calibration is based on its former one’s result. Disorder of the steps will default the calibration. • Tighten the screw after calibration. Be careful not to over tighten because excessive tightening will damage the thread.
6280H_Manuals 10/29/12 11:39 AM Page 26 • Rotate the instrument 180 degrees and check if the bubble remains centered. If the bubble is centered, the adjustment is complete. If not, repeat the steps until the bubble is centered when the instrument is at any position. Check and Calibrate The Circular Vial Checking If the circular vial is centered correctly after leveling the instrument by the tubular vial, then no further calibration is necessary. If not, proceed with the following calibration.
6280H_Manuals 10/29/12 11:39 AM Page 27 • Move the telescope using the vertical fine movement and observe whether point A moves along the vertical hair. • If point A moves along the vertical hair of the reticle, no adjustment is necessary. • Adjustment is necessary if the point A strays from the vertical crosshair. Clamp Screws of Reticle Base Reticle Adjusting Screw Calibrating • Turn counterclockwise and remove the reticle cover between the eyepiece and focusing handwheel.
6280H_Manuals 10/29/12 11:39 AM Page 28 Perpendicular Degree of The Visual Axis and The Horizontal Axis Checking • Set two targets as high as the instrument, one in front of and the other behind the instrument, each about 50 meters away from the instrument. Level the instrument precisely and power it on. • Aim at target A with crosshair of the telescope in plate-leftward position. • Rotate the telescope around the horizontal axis 180º to aim it in the opposite direction.
6280H_Manuals 10/29/12 11:39 AM Page 29 Calibrating • Remove the reticle cover between the eyepiece of the telescope and the focusing handwheel. • Set up point D between point B and C. The distance of DC should be a quarter of BC. Adjust the two adjusting screws to move the reticle to have its cross aim at point D. • Repeat above inspection steps until B and C are coincident. • Assemble the reticle cover back to its original position.
6280H_Manuals 10/29/12 11:39 AM Page 30 • Position the telescope to zero after power-on. Tighten the vertical clamp and the instrument will display the current value in the upright position. • Slowly turn the foot screw in one direction about 1/2” or so (circle distance), the value of upright angle changes correspondingly until it disappears and the symbol “b” is shown, this means the incline of the instrument’s axis has exceeded the compensation range.
6280H_Manuals 10/29/12 11:39 AM Page 31 Calibrating Operating Procedures Operation Display 1. Level the instrument accurately with the long vial. 2. Power on the instrument, the vertical angle and horizontal angle are displayed after the telescope passes zero position. 3. Press the FUNC key once, and then press the V/% key. 4. Rotate the instrument and precisely aim at the clear and stable target A as high as the instrument in the distance. 5. Press the 0-Set key once. 6.
6280H_Manuals 10/29/12 11:39 AM Page 32 • Turn the instrument 180º. • If the target remains at the center of the reticle, no adjustment is required. Otherwise, adjust as follows. Calibrating • Turn counterclockwise and remove the black ring/adjusting screw cover located between the optical eyepiece and the focusing knob. • Place a sheet of paper under the instrument and mark the optical plummet center mark each time the instrument turns 90º, as shown in the figure: point A, B, C, D.
6280H_Manuals 10/29/12 11:39 AM Page 33 Communication Format All data is sent in ASCII. When communication is on, vertical angle and horizontal angle are sent in turns with 4Hz frequency. All angle data sent begins with the letter “A” (angle), and finish with the enter key (OXOD).
6280H_Manuals 10/29/12 11:39 AM Page 34 9. Technical Specifications Telescope Image Magnification Aperture Resolution Angle of view Shortest Distance Stadia Constant Overall Length Erect 30x 1.7in (45mm) 3’’ 1°30’ 5ft (1.4m) 100 6.
6280H_Manuals 10/29/12 11:39 AM Page 35 Optical Plummet Imaging Magnification Focusing range Field Angle Erect 3x 0.5m 5° Display Type LCD with Double Side Data Input and Output Joint (one) RS232 Power Battery Operating Voltage Operating Time 5 “AA” Alkaline Batteries or Rechargeable NiMH Battery Pack 6V DC 16 hours Working Environment Temperature Range -4°F to +104°F (-20°C to +40°C) Size and Weight Outside Dimension Weight ©2012 Johnson Level & Tool 6.29” x 5.90” x 12.99” (160x150x330mm) 10.
6280H_Manuals 10/29/12 11:39 AM Page 36 10. Care and Handling • Care must be taken to maintain the accuracy of the instrument. • Do not aim the instrument’s telescope directly at the sun. • When mounting or removing the instrument from the tripod, hold the instrument with one hand, turn the central screw on the tripod with the other hand to prevent the instrument from falling. If the instrument must be carried on the tripod, hold the instrument as vertically as possible.
6280H_Manuals 10/29/12 11:39 AM Page 37 11. Product Warranty Johnson Level & Tool offers a three year limited warranty on each of its products. You can obtain a copy of the limited warranty for a Johnson Level & Tool product by contacting Johnson Level & Tool's Customer Service Department, as provided below, or by visiting our web site at www.johnsonlevel.com. The limited warranty for each product contains various limitations and exclusions.
6280H_Manuals 10/29/12 11:39 AM Page 38 12. Warranty Registration Enclosed with this instruction manual you will find a warranty registration card to be completed for your product. You will need to locate the serial number for your product that is located on the bottom of the unit.
