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DWT-10

Instruction Manual

For Customer Service

Call (781) 848-7702 or

Fax (781) 848-8022

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Summary of Contents for DWT-10

Page 1: ... DWT 10 Instruction Manual For Customer Service Call 781 848 7702 or Fax 781 848 8022 ...

Page 2: ...ng 8 2 2 Telescope eyepiece focus 9 2 3 Aiming at the target 10 3 MEASUREMENT 10 3 1 Power 10 3 2 Measuring horizontal angles 11 3 3 Presetting horizontal angles 11 3 4 Measuring vertical angles 11 3 5 Measuring percent of grade 11 3 6 Stadia measurement 12 3 7 Displayed Error Codes 12 4 HANDLING of POWER SUPPLY 13 4 1 Removing battery compartment 13 4 2 Replacing batteries 13 4 3 Mounting battery...

Page 3: ... rods or drive two pieces of strapping into the ground about 200 feet apart with the faces toward each other Position and level the instrument so that the distance from the instrument to each rod is the same measure Fig 1 Take a reading on each rod with the instrument or mark each piece of strapping where the crosshair is sighted Note the difference and record them Next move the instrument to anot...

Page 4: ...usting is required other than by reason of the warranty claim Seller shall notify Buyer of the charges for same and after authorization is received from Buyer Seller shall perform such additional service s on behalf of the Buyer at its standard charges then in effect and the Buyer shall be responsible for the payment of such charges in addition to the other charges and expenses referred to above I...

Page 5: ...3 1 NOMENCLATURE AND FUNCTIONS 1 1 Nomenclature ...

Page 6: ... section 1 2 3 preference set up HR Horizontal angle counterclockwise symbol H L Horizontal angle clockwise symbol Battery strength symbol See section 4 power Angular measurements are in gons See section 1 2 3 preference set up G Vertical reading shown as percent of grade see section 1 2 3 preference set up 1 2 Part Functions R L V HOLD OSET V 8 8 8 8 8 8 8 HRL8 8 8 8 8 8 8 G R L V HOLD OSET V HR ...

Page 7: ... without changing the horizontal reading Pressing the button again will unlock the horizontal angle display Used to light the display and crosshairs Press to light display and crosshairs press again to shut off the light Illuminating the display and the crosshairs V Vertical angle to percent of grade Used to switch the vertical angle display between degrees gons and percent of grade The sign will ...

Page 8: ...e the readout of the horizontal and vertical angle display to show 10 second or 20 second readings The accuracy of this instrument is 20 seconds not 10 seconds Changing the readout does not make the instrument more accurate V Change between 360 degree readout or 400 gon readout for horizontal and vertical angle measurement HOLD Change the time of automatic power shut off for the display The three ...

Page 9: ...7 1 2 3 Preferences continued Once all preferences have been input press the H R and V at the same time A long tone will be heard and the display will return to normal ...

Page 10: ... C Repeat steps A and B until the level stays centered in any direction If the plate level will not stay centered see section 5 2 to adjust the vial A Use level screws A and B to move the air bubble in the circular vial so it is centered left to right B Use level screw C to move the air bubble to the center of the vial A Turn the instrument until the plate level is in either one of the positions s...

Page 11: ...yepiece Focus Point the telescope toward a bright area and turn the telescope eyepiece until the crosshairs come into sharp focus Avoid parallax the shifting seen between the target and the crosshairs when your eye moves while sighting through the telescope Parallax will cause inaccurate measure ments To avoid parallax perform the following 1 Focus the telescope on a target 2 You should be able to...

Page 12: ...ible replace the batteries Note Battery operating time will vary depending on type and brand and operating temperature Be sure to keep an extra set of alkaline type AA batteries in the carrying case For any other questions about the batteries see section 4 2 3 Aiming At The Target Loosen the clamps and point at the target using the targeting sights located above and below the telescope Allow some ...

Page 13: ...blink on and off 3 Aim the instrument at the target and press the HOLD button again The horizontal angle will be released from that point HR 60 00 00 will be the start point for horizon tal angle measurement 3 4 Measuring Vertical Angles There are three different vertical scales to choose from when measuring vertical angles See the three scales in section 1 2 3 performance setup Choose the vertica...

Page 14: ...AUSE ERROR E01 Instrument spun horizonitally at too great a speed for the horizontal detector E02 Telescope spun vertically at too great a speed for the vertical detector E03 Error in the vertical angle measurement system Re start the instrument If error is still shown return instrument for repair E04 Error in the horizontal angle measurement system Re start the instrument If error is still shown ...

Page 15: ...ok locks the door in place 4 3 Mounting Battery Compartment 1 Slip the projection on the bottom of the battery compartment into the slot 2 Push the top of the battery compartment toward the housing until the battery compartment latch clicks into place 4 HANDLING OF POWER SUPPLY 4 1 Removing The Battery Compartment Push down on the battery compartment latch and pull the top of the battery compartme...

Page 16: ... the original position in step A Recheck the bubble and center as neces sary Rotate the instrument 180 200g The bubble should still be centered in the vial If not go to step D D Using the adjusting pin provided in the case turn the screw until the bubble moves halfway back to its original position E Return the instrument to its original position follows steps A through C Repeat these steps until t...

Page 17: ... one screw 1 4 turn then tighten the opposing screw 1 4 turn E Repeat steps A through D until there is no displacement of the target when the instrument is turned about its vertical axis 5 3 Setting The Vertical Zero Postion PROCEDURE KEY DISPLAY Accurately level the instrument N A Press and hold the V key while pressing the power key The instrument display will enter the vertical zero adjustment ...

Page 18: ... tripod when carrying at the job site If the instrument must be carried on the tripod hold the instrument as vertically as possible and keep it in front of you Never carry the instrument horizontally over your shoulder Any long distance transport should be done with the instrument in the carrying case Do not expose the instrument to direct sunlight for long periods Never leave the instrument expos...

Page 19: ... 4 6 VDC 4 AA Batteries 15 hrs continuous use 20 C 68 F 20 to 50 C 4 to 122 F 145x200x300mm Standard deviation based on DIN18723 Overall Length Objective aperture Magnification Image Field of view Resolving power Minimum focus Stadia Ratio Stadia constant Method Minimum reading Accuracy Diameter of circle Magnification Field of view Focusing range Plate vial Circular vial Operating voltage require...

Page 20: ...P N DWT10MANL 08 02 P O Box 359 Watseka IL 60970 USA 800 435 1859 815 432 5237 FAX 815 432 5390 www davidwhite com ...

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