Topcon DT-300 Series Instruction Manual
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Topcon DT-300 Series Instruction Manual

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COVER
INSTRUCTION MANUAL
DIGITAL THEODOLITE
DT-300 series
1037074-02-B

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Summary of Contents for Topcon DT-300 Series

  • Page 1 COVER INSTRUCTION MANUAL DIGITAL THEODOLITE DT-300 series 1037074-02-B...

  • Page 2: How To Read This Manual

    • Always keep this manual in a convenient location and read it when necessary. • This manual is protected by copyright and all rights are reserved by TOPCON CORPORATION. • Except as permitted by Copyright law, this manual may not be copied, and no part of this manual may be reproduced in any form or by any means.
  • Page 3 CONTENTS 1. PRECAUTIONS FOR SAFE OPERATION ..............1 2. PRECAUTIONS ......................3 3. LASER SAFETY INFORMATION .................. 5 4. PRODUCT OUTLINE ....................6 Parts of the Instrument ..................6 5. BASIC OPERATION ...................... 9 Basic Key Operation ..................... 9 Display Functions ....................9 6.

  • Page 4: Precautions For Safe Operation

    1. PRECAUTIONS FOR SAFE OPERATION For the safe use of the product and prevention of injury to operators and other persons as well as prevention of property damage, items which should be observed are indicated by an exclamation point within a triangle used with WARNING and CAUTION statements in this instruction manual.
  • Page 5 1. PRECAUTIONS FOR SAFE OPERATION Power Supply  Warning Do not disassemble or rebuild the battery or the battery charger, nor expose to heavy shocks  or vibration. Sparking, fire, electric shock or burns could result.  Do not short circuit. Heat or ignition could result. Do not place articles such as clothing on the battery charger while charging batteries.
  • Page 6 2. PRECAUTIONS Precautions concerning water and dust resistance The instrument conforms to IP66 specifications for waterproofing and dust resistance when battery cover and connector cap are closed. • Be sure to correctly attach the battery cover to protect the instrument from moisture and dust particles. •...
  • Page 7 2. PRECAUTIONS Maintenance • Wipe off moisture completely if the instrument gets wet during survey work. • Always clean the instrument before returning it to the case. The lens requires special care. First, dust it off with the lens brush to remove tiny particles. Then, after providing a little condensation by breathing on the lens, wipe it with the wiping cloth.

  • Page 8: Laser Safety Information

    3. LASER SAFETY INFORMATION The instrument is classified as the following class of Laser Product according to IEC Standard Publication 60825-1 Ed.3.0: 2014 and United States Government Code of Federal Regulation FDA CDRH 21CFR Part 1040.10 and 1040.11 (Complies with FDA performance standards for laser products except for deviations pursuant to Laser Notice No.56, dated May 8, 2019.) *1: DT-305L/307L/309LG Device...

  • Page 9: Product Outline

    4. PRODUCT OUTLINE Parts of the Instrument  DT-302/305/307/309F/309G 1 Handle 2 Handgrip locking screw 3 Sighting collimator 4 Instrument height mark  5 Battery cover 6 Serial connector (DT-302 only) 7 Circular level 8 Leveling foot screw 9 Display unit* 10 Optical plummet 11 Objective lens (Includes "Laser-pointer function") 12 Telescope focusing ring...
  • Page 10 4. PRODUCT OUTLINE  DT-305L/307L/309LG 1 Handle 2 Handgrip locking screw 3 Sighting collimator 4 Instrument height mark  5 Battery cover 6 Circular level 7 Leveling foot screw 8 Display unit* 9 Optical plummet 10 Objective lens (Includes "Laser-pointer function") 11 Telescope focusing ring 12 Cross-hair adjustment section cover 13 Vertical clamp...
  • Page 11 4. PRODUCT OUTLINE  Sighting collimator Use sighting collimator to aim the instrument in the direction of the measurement point. Turn the instrument until the apex of the triangle in the sighting collimator is aligned with the target. A circle surrounds the triangle to make it easier to locate.

  • Page 12: Basic Key Operation

    5. BASIC OPERATION Learn basic key operations here before you read each measurement procedure. Basic Key Operation Learn basic key operations here before you read the measurement procedure. Function mode Function Function (Function mode) Power switch {REP} Repetition angle measurement Illumination of display and reticle {FUNC} Upper function selection...
  • Page 13 5. BASIC OPERATION  Remaining Battery Power The remaining battery power is displayed in four levels. 90°10’20” TILT Measurement is possible. 123°40’50” Remaining battery power Measurement is impossible. Replace batteries.  • The battery operating time will vary depending on the environmental conditions, such as ambient temperature etc.

  • Page 14: Using The Battery

    6. USING THE BATTERY The following batteries can be used with the DT. • Four AA alkaline batteries (sold separately)  • Battery BDC71 ( "14. OPTIONAL ACCESSORIES") Installing the AA Batteries  • Replace all four batteries with new ones at the same time. •...
  • Page 15 6. USING THE BATTERY 2. Checking the terminal side on the battery, insert the battery as shown.  • Do not insert the battery inclined. Doing so may damage the instrument or battery terminals. Battery 3. Close the battery cover. A click is heard when the cover is secure.

  • Page 16: Setting Up The Instrument

    7. SETTING UP THE INSTRUMENT  • Mount the battery in the instrument before performing this operation because the instrument will tilt slightly if the battery is mounted after levelling. Centering PROCEDURE Centering with the optical plummet eyepiece 1. Make sure the legs are spaced at equal intervals and the head is approximately level.
  • Page 17 7. SETTING UP THE INSTRUMENT Levelling PROCEDURE 1. Perform the centering procedure.  "7.1 Centering" 2. Roughly center the bubble in the circular level by either shortening the tripod leg closest to the Tripod legs offcenter direction of the bubble or by lengthening adjustment the tripod leg farthest from the offcenter direction of the bubble.

  • Page 18: Vertical Angle Tilt Correction

    7. SETTING UP THE INSTRUMENT 7. Adjust the leveling screw again to align the survey point with the center of the optical vertical reticle. (Tribrach type: Detachable) Loosen the centering screw slightly. Looking through the optical plummet eyepiece, slide the instrument over the tripod head until the survey point is exactly centered in the reticle.

  • Page 19: Power On/Off

    8. POWER ON/OFF PROCEDURE Power ON 1. Press the power switch key on the operation panel. Every segment turns on for about 1 second, and then the horizontal angle is displayed. 342°03’00” Press {V/%}. The vertical angle is displayed. 11°50’00” ...

  • Page 20: Angle Measurement

    9. ANGLE MEASUREMENT Measuring the Horizontal Angle Right and Vertical Angle 1. Sight the first target "A". 90°10’20” 120°30’40” 2. Press {0 SET} twice to set the horizontal angle of target "A" to "0°00’00". 90°10’20”  0°00’00” • Horizontal angle can be set to 0 with one press of {0 SET}. ...

  • Page 21: Measuring From The Required Horizontal Angle

    9. ANGLE MEASUREMENT 3. Focus on the target with the telescope focusing ring. * If parallax is created between the cross hairs and the target Telescope when viewing vertically or horizontally through the telescope, focusing ring focusing is incorrect or diopter adjustment is insufficient. Telescope eyepiece This adversely affects precision in measurement or survey.

  • Page 22: Repetition Angle Measurement

    9. ANGLE MEASUREMENT Repetition Angle Measurement 1. Press {FUNC} to go function mode screen. 90°10’20” 120°30’40” 2. Press {REP} to go repetition angle measurement mode. 0°00’00” 3. Sight the target “A”, and press {0SET} twice to become 0°. 0°00’00” 4. Sight the target “B”, and press {HOLD}. 45°10’00”...

  • Page 23: Stadia Surveying

    9. ANGLE MEASUREMENT Stadia Surveying This instrument can be used for stadia surveying. Measurement by stadia is a convenient method for measuring distances (D) with the stadia hairs of the instrument, in combination with a graduated rod, such as a leveling rod or stadia rod, which is preferable for long distances. The distance from the center of the instrument to the rod is found by sighting through the instrument on the rod and multiplying the stadia interval (d) by 100.
  • Page 24 10. HOW TO OPERATE THE LASER POINTER (DT-305L/307L/309LG only)  CAUTION • When using the laser-pointer function, be sure to turn OFF the output laser after measurement is completed. Even if the power is turned off, the laser-pointer function is still operating and the laser beam continues to be emitted.

  • Page 25: Other Functions

    11. OTHER FUNCTIONS 11.1 Buzzer for Horizontal Angle 90° Increments When the horizontal angle falls below ± 1° of 0°, 90°, 180° or 270°, the buzzer sounds. Buzzer stops only when the horizontal angle is adjusted to 0°00’00”, 90°00’00”, 180°00’00” or 270°00’00”. ...

  • Page 26: Selecting Mode

    12. SELECTING MODE The following modes are available. 12.1 Selecting Mode Options  Selecting mode 1 To set the instrument to selecting mode 1, turn the power ON while pressing {R/L}. Selecting mode 1 {R/L} + Power on 0 0 0 0 0 0 0 Digit No.7 Digit No.1 Selecting mode 1...
  • Page 27 12. SELECTING MODE  Selecting mode 2 To set the instrument to selecting mode 2, turn the power ON while pressing {V/%}. Selecting mode 2 {V/%} + Power on 0 0 0 0 0 0 0 Digit No.7 Digit No.1 Selecting mode 2 Digit Setting...

  • Page 28: How To Set The Selecting Modes

    12. SELECTING MODE 12.2 How to Set the Selecting Modes  Selecting Mode 1 Sample setting: Auto cut off: OFF, 90° buzzer: OFF 1. Turn the power ON while pressing {R/L}. The instrument will be in selecting mode 1, and the Blinking digit No.1 will blink.
  • Page 29 12. SELECTING MODE • Each time you press { }, the blinking digit value alternately displays 0 and 1.  Selecting mode 2 Sample setting: {0 SET} operation: Once, Tilt correction: OFF 1. Turn the power ON while pressing {V/%}. The instrument will be in selecting mode 2, and the digit No.1 (0set operation) will blink.
  • Page 30 12. SELECTING MODE 12.3 Initialization of Selecting Mode 1. Turn the power switch ON while holding {R/L} and {0 SET}. 2. Press {0 SET} in the dEF SET display screen. Settings of Selecting Mode 1 and 2 return to the factory d EF S E T default, and "SET"...

  • Page 31: Checks And Adjustments

    13. CHECKS AND ADJUSTMENTS A DT is a precision instrument that requires fine adjustments. It must be inspected and adjusted before use so that it always performs accurate measurements. • Always perform checking and adjustment in the proper sequence beginning from "13.1 Plate Level" to "13.7 Laser Beam".

  • Page 32: Circular Level

    13. CHECKS AND ADJUSTMENTS 13.2 Circular Level Check and adjust it as outlined below.  • Be careful that the tightening tension is identical for all the adjusting screws. Also, do not over-tighten the adjusting screws as this may damage the circular level. PROCEDURE Checking and adjusting 1.
  • Page 33 13. CHECKS AND ADJUSTMENTS 13.3 Vertical Cross-hair Adjustment is required if the vertical cross-hair is not perpendicular to the horizontal axis of the telescope (since it must be possible to use any point on the hair for measuring horizontal angles or running lines). PROCEDURE Checking 1.
  • Page 34 13. CHECKS AND ADJUSTMENTS 13.4 Collimation Collimation is required to make the line of sight of the telescope perpendicular to the horizontal axis of the instrument. Otherwise, it will not be possible to extend a straight line by direct means. PROCEDURE Checking 1.

  • Page 35: Optical Plummet

    13. CHECKS AND ADJUSTMENTS 3. Shift the vertical cross-hair line and align it with point D, Capstan by revolving the left and right capstan adjustment adjustment screws with the hexagonal wrench* (or adjusting pin). screw Upon completing the adjustment, repeat the checking operation once more.
  • Page 36 13. CHECKS AND ADJUSTMENTS 3. Turn the 4 adjusting screws of the optical plummet to adjust the remaining half of the deviation using hexagonal wrench (1.3 mm) as shown below. When the survey point is on the lower (upper) part of the illustration: Loosen the upper (lower) adjusting screw slightly, and tighten the upper (lower) adjusting screw the same amount...
  • Page 37 13. CHECKS AND ADJUSTMENTS 13.6 Vertical Angle 0 Datum If when measuring the vertical angle of target A in both faces, the total of combined face left and face right measurements is other than 360° (ZENITH-0), half of the difference from 360° is the error amount from corrected 0 setting.

  • Page 38: Laser Beam

    13. CHECKS AND ADJUSTMENTS 13.7 Laser Beam This adjustment must be done after completing the checks and adjustments of "13.3 Vertical Cross-hair" and "13.4 Collimation". In intersection of the cross-hair does not coincide with the laser spot, turn the laser axis adjusting screws to move the laser spot to coincide with intersection of the cross-hair.

  • Page 39: Optional Accessories

    14. OPTIONAL ACCESSORIES The following are outlines and how to use optional accessories. Plumb bob  The plumb bob can be used to set up and center the instrument on days when there is little wind. To use the plumb bob, unwind its cord, pass it through the cord grip piece as shown in the figure to adjust its length, then suspend it from the hook attached to the centering screw.

  • Page 40: Error Display

    15. ERROR DISPLAY Display Contents Countermeasure Displayed when the instrument or the In this case, it is not failure. AnGLE telescope rotated quickly. However, repair is required when "AnGLE Error Error" is displayed frequently. Displayed when the discrepancy value of Press {0SET}, measure again from the each measuring is more than ±30”...

  • Page 41: Specifications

    16. SPECIFICATIONS Telescope Length DT-302/305/307/309F/309G: 149mm DT-305L/307L/309LG: 152mm Aperture 45 mm Magnification Image Erect Resolving power 2.5" Field of view 1°30' (26 m/1,000 m) Minimum focus DT-302/305/307/309F/309G: 0.9 m DT-305L/307L/309LG: 1.0 m Reticle illumination Stadia ratio Stadia constant Angle measurement Horizontal and Vertical circles type Rotary absolute encoder Angle units...
  • Page 42 16. SPECIFICATIONS Laser beam diameter (When focused)*1 Telescope Distance (m) Magnification Beam diameter (m) 0.1x0.2 0.2x0.4 0.5x0.7 0.7x1.1 1.2x1.9 (width x height) The laser beam diameters are theoretical values. The visible laser beam diameter will vary with ambient brightness. Power Supply Power source 4 AA alkaline batteries Working duration at 20 °C...
  • Page 43 16. SPECIFICATIONS Weight Detachable: 4.1 kg (9.04 lb) (with batteries and battery holder) Centering: 4.1 kg (9.04 lb) (with batteries and battery holder) Fixing 4.0 kg (8.82 lb) (with batteries and battery holder) No direct sunlight for using high temperatures of 50°C (-22 °F).
  • Page 44 Name : TOPCON CORPORATION Address : 75-1, Hasunuma-cho, Itabashi-ku, Tokyo, 174-8580 JAPAN Europe Representative and Importer Name : Topcon Europe Positioning B.V. Address : Essebaan 11, 2908 LJ Capelle a/d IJssel, The Netherlands WEEE Directive WEEE Directive This symbol is applicable to EU members states only.
  • Page 45 17. REGULATIONS Region/ Directives/ Description Country Regulations EU Battery EU Battery Directive Directive This symbol is applicable to EU members states only. Battery users must not dispose of batteries as unsorted general waste, but treat properly. If a chemical symbol is printed beneath the symbol shown above, this chemical symbol means that the battery or accumulator contains a heavy metal at a certain concentration.
  • Page 46 INQUIRIES https://www.topcon.co.jp Please see the following website for contact addresses. GLOBAL GATEWAY https://global.topcon.com 2020...

This manual is also suitable for:

Dt-302Dt-305Dt-305lDt-307Dt-307lDt-309f ... Show all

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