electronic theodolits - sumitopo · 3.5 repetition measurement for horizontal angle an example of...

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Electronic Theodolits lnstruction Manual

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Page 1: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

Electronic Theodolits

lnstruction Manual

Page 2: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

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Content Table 1.Nomenclature and Functions of Components………….. 5

1.1 Nomenclature of Components………………………5 1.2 Operating Keyboard…………………………………7

2. Preparations before Measurement………………………9 2.1 Place the Instrument…………………………………9 2.2 Switch on Power Switch and Begin Measurement….12 2.3 Battery Level Display ……………………………….133. Angle Measurement……………………………………...14 3.1 Measure a HR and Vertical Angle…………………...14 3.2 Conversion Between HR and HL……………………16 3.3 Set Horizontal Angle (Dial Locking Method)……….17 3.4 Measure Grade Percent of Vertical Angle…………...18 3.5 Repetition Measurement for Horizontal Angle……...19

4. Distance and Coordinate Measurement ………………...22 4.1 Use with EDM………………………………………22 4.2 Connection Procedures with EDM………………….22 4.3 Online Setting Method……………………………... 24 4.4 Multiple Average Measurement……………………. 25 4.5 Tracing Measurement ………………………………27 4.6 Continuous Measurement………………………….. 28 4.7 Coordinate Measurement……………………………30

5. Data Transmission………………………………………32 6. Mode Setup…………………………………………….. 33 7. Zero Correction of Vertical Angle………………………36

Page 3: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

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8. Other Functions………………………………………… 37

8.1 Measure Distance with Crosshair……………………37 8.2 Tilt Correction Function……………………………..38 8.3 Illumination and Automatic Power off…………………39

9. Replace and Charge Battery…………………………….40 10. Attach and Detach Tribrach……………………………42 11. Check and Adjustment…………………………………43

11.1 Check and Adjust the Plate Level………………….43 11.2 Check and Adjust the Circular Level………………44 11.3 Check and Adjust Crosshair………………………..45 11.4 Collimation of the Instrument……………………...46 11.5 Check and Adjust Optical Plummet………………..47 11.6 Check and Adjust Laser Plummet………………... 49

12. Error Information Display and Relevant Remedies…. 50 13. Cautions……………………………………………….51 14.manual for laser theodolite……………………52

14.1 Use method…………………………………………52 14.2 An example…………………………………………52

14.3 Technologyparametersforlaserparts………………………...52 14.4 Adjusting method…………………………………………...53

15. Memory function……………….………………………………..54 16. Technical Specification………………………………..56

Page 4: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

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Preface Thank you for purchasing our corporation series electronic theodolites. Such theodolites are precision measuring instrument integrated with optical and electromechanical technologies. Bad maintenance and care decrease their accuracy and shorten their service life, even affect normal measuring work. To make best use of them and operate them correctly, please carefully read the manual and keep it well for future use.

Page 5: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

1. Nomenclature and Functions of Components 1.1 Nomenclature of Components 1. Carrying handle 2. Instrument height mark 3. Optical plummet 4. EDM input port 5. Tribrach 6. foot screw 7. Handle screw 8. Objective lens 9. Sighting collimator 10. Vertical clamp 11. Vertical tangent screw 12. Operating key 13. LCD 14. Circular level

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Page 6: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

1. Sighting collimator 2. Focusing knob 3. Eyepiece 4. Plate level 5. LCD 6. Operating key 7. foot screw 8. Locking lever 9. Battery case 10. Instrument height mark 11. Horizontal clamp 12. Horizontal tangent screw 13.Data output port 14. Base locking lever

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Page 7: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

1.2 Operating Keyboard ● Operating Key

Keys

Function 1

Function 2

REC◄

HR or HL

Measurement data are transmitted; in input mode, the modified number (blinking) moves to the left by a digit.

REP▲

Horizontal angle set

Repetition measurement mode; in input mode, the modified number (blinking) is added by a digit.

Selecting second function

Display illumination and telescope reticle illumination

Conversion between vertical angle and slope

angle

Coordinate measurement mode; in input mode, the modified number moves to the right by a digit.

Horizontal angle 0 set

Distance measurement mode

Power switch

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Page 8: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

● Display Marks

Marks Connotations Marks Connotations

① * Stadiometer is working (11) AVG Average ② V Vertical angle

HRLHorizontal angle status

③ REP Repetition measurement for horizontal angle

HR Horizontal angle right

④ Ht Accumulated vale for repetition measurement

HL Horizontal angle left

⑤ F Selecting second function

(12)

H

Average in repetition

measurement⑥ % Slope unit of vertical

angle

Horizontal distance

mft Distance unit

Slant

distance m Meter Height ⑦ ft Feet

North

(N)coordinat⑧ G 400 Gon for angle unit

East (E)coordinat

⑨ BAT Power level of battery

(13)

Height (Z)coordinat

⑩ TILT Tilting compensation function is enabled

(14) SO Lofting measurement

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Page 9: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

2. Preparations before Measurement Before measurement, make sure that the instrument is normal; level and center it precisely. 2.1 Place the Instrument The instrument should be place in the tripod supplied with center screw in the diameter of 5/8 inches and in 11 threads per inch, and leveling and centering work should be performed correctly. ● Level and Center the Instrument 1. Place the tripod in the proper position, set the desired height, and tighten locking screws. 2. Place the instrument carefully on the tripod head, and after loosening adjusting screw, move the instrument slowly so that the plumb bob is aligned with the point on the ground. Then tighten adjusting screw lightly. 3. Roughly level the instrument with circular level a. Use leveling screws A and B into two corners to move the bubble of the circular level onto a line perpendicular to a line running through the centers of the two leveling screws (shown in Figure 1). b. Turn leveling screw C to move the bubble to the center of circular level.

A B

C C

Figure 1 Figure 2

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Page 10: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

4. Finely level the instrument with plate level a. Loosen horizontal clamp, and turn the instrument horizontally to make plate level vial parallel to a line running through the centers of leveling screws A and B. By adjusting such screws, move the bubble to the center of the level vial (shown in Figure 1). b. Next, turn the instrument by 90 º (100 Gon) around its vertical axis, and adjust the remaining screw C to center the level bubble once more (shown in Figure 2). Repeat step a and b, to make the level bubble is correctly centered for four positions.

A B

C

90

Figure 1 Figure 2 5. Center the instrument with optical plummet Adjust the eyepiece of the optical plummet telescope to the user’s eyesight. By loosening adjusting screw, move the instrument lightly so that the image of the point on the ground is coincided with the center mark of the optical plummet telescope (shown in Figure 1), and tighten the screw. Note: Move the instrument horizontally as possible, and don’t make it turned on the tripod, to diminish deviation of the bubble as possible.

Mark point Reticle center Laser faculaMark point

Figure 1 Figure

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Page 11: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

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6. Center the instrument with laser plummet For electronic theodolites with laser plummet, when centering the instrument, switch on the laser plumbing fork. As observing laser beam, adjust and move the instrument so that the image of the point on the ground is coincided with the laser facula (shown in Figure 2). After confirmation, switch off the laser plummet. 7. Finally precisely level the instrument Repeat Step 4, until the level bubble is always in the center of the level vial wherever the instrument is turned to. Finally, tighten the central adjusting screw.

Page 12: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

2.2 Switch on Power Switch and Begin Measurement 1. Switch on the power switch. After LCD displays all marks (for 2 seconds), it prompt that vertical angle should be zero (rotate the telescope to set the instrument to a vertical angle reading of 0). 2. Rotate the telescope, and the instrument enters the state of measuring angles. And, LCD shows the angle reading.

START UP

ρ To ensure the instrument works normally, make sure that the battery level is enough. If the batter level is insufficient, charge or replace the battery. See Section 2.3 “Batter Level Display”. ρ For setting the vertical angle at 0º, an electronic datum 0 is set on the vertical angle scale. When the telescope is turned and the sensor passes the datum 0, angle measurement begins. The datum is horizontally nearby the telescope, so it is easy to set the vertical angle at 0º by turning the telescope.

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Page 13: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

2.3 Battery Level Display BAT marks in LCD indicate the power condition.

Battery level

From full level to insufficient level, measurement can be performed. But when BAT mark is blinking, showing the battery is used up, measurement is impossible and battery should be replaced immediately.

ρ The operating time of the battery depends on many factors, such

ambient temperature, charging time length, and times of chargingand discharging. For safety, it is recommended that the battery should be charged fully before measurement.

ρ BAT marks show the level of power consumption. ρ For power accessories as options for the instrument, chargeable

battery case and fast charger are available. For using the battery and the charger, see Chapter 7 “Battery and Charging”.

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Page 14: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

3. Angle Measurement 3.1 Measure a Horizontal and Vertical Angle An example of operating procedure: 1. Collimate the first target A by using the telescope.

2. Press key, set the horizontal angle of target A to 0º 00′ 00″.

3. By turning the telescope, collimate the second target B. At the time, LCD displays its horizontal angle and vertical angle.

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Page 15: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

● How to Collimate (Only for Information)

Focusing knob of telescope

Focusing knob of eyepiece

1. Point the telescope towards the sky, turn the diopter ring and adjust the diopter so that the crosshair is clearly observed. (First turn the barrel toward you and then backward slowly.) 2. Roughly collimate the targets by using the top of triangle mark in sighting collimator. It is necessary to leave a certain distance between the collimator and you for collimating. 3. Focus the target with the focusing knob of the telescope.

ρ If parallax exists between the crosshair and target when viewing vertically or horizontally while looking into the telescope,

focusing is incorrect or diopter adjustment is poor. This adversely affects precision in measurement or survey. Carefully turn the diopter ring, to make the crosshair clear and eliminate the parallax as possible.

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Page 16: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

3.2 Conversion Between HR and HL An example of operating procedure: 1. Collimate the first target A by using the telescope, to get HR of 120º 30′ 40″.

2. Press key, and convert HR to HL of 239º 29′ 20″. 3. The instrument changes into the HL measurement mode.

ρ Every time press key, HL and HR modes can alternate.

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Page 17: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

3.3 Set Horizontal Angle (Dial Locking Method) By using locking key , set horizontal dial readings at any positions you required. An example of operating procedure: 1. Turn horizontal tangent screw and set horizontal angle at 20º 30′ 45″.

2. Press key, and the value is locked and blinking.

3. Turn the telescope, collimate target A, and lock clamp. 4. Press key again, and the horizontal angle stops blinking and is unlocked. The horizontal angle of target A is 20º 30′ 45″.

ρ In locking mode (blinking state), press other keys to return to the previous state.

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Page 18: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

3.4 Measure Grade Percent of Vertical Angle (Slope Angle) An example of operating procedure: 1. Vertical angle is in the display mode of zenith angle or vertical angle.

2. Press key, and the mode of vertical angle will change into the mode of slope angle.

3. Press key again, and the mode of slope angle will change into the mode of vertical angle.

ρ Every time press key, the modes of vertical angle and

slope angle can alternate. ρ In the mode of slope angle, when the slope angle is equal to or

more than ±100%, “--------” will display.

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Page 19: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode. Press

key, and LCD will display “F” in the right corner, prompting to enter the second function.

2. Press key (REP key), and the instrument will enter repetition measurement mode.

3. Press key, and the angle reading is set at 0º. The reading is blinking and locked. Turn the telescope, collimate the first target A, and lock clamp.

4. Press key again, and the locked value will be released and the initial reading of target A is set at 0º 00′ 00″.

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Page 20: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

5. Turn the horizontal fixing screw in upper plate and the telescope, collimate the second target B, and lock clamp.

6. Press key, and the horizontal angle value is locked and saved.

7. Turn the horizontal fixing screw in upper plate and the telescope, collimate the first target A again, and lock clamp.

8. Press key, and the locked value will be released. 9. Turn the horizontal fixing screw in upper plate and the telescope, collimate the second target B again, and lock clamp.

10. Press key, and the horizontal angle value is locked and saved in the instrument. At the time, LCD displays doubled angle value and displays the average angle in the lower row.

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Page 21: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

11. Repeat Step 6-8 in 4 times, to get 4 average angle values as required.

12. Press key, and press key, and the instrument exits the angle repetition measurement mode and returns to the previous status.

ρ In repetition measurement mode, the repetition measurement times should be limited in 9 ones. Otherwise, the instrument displays errors. ρ During repetition measurement, when measurement error is equal

to or more than ±30″, the instrument will display errors. You can press key, and restart the measurement.

ρ During repetition measurement, the horizontal angle can be accumulated to ±1999º 59′ 59″. ρ If restart the repetition measurement, begin with Step 3.

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Page 22: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

4. Distance and Coordinate Measurement 4.1 Use with EDM The series electronic theodolite and infrared photoelectric distance measuring instrument (EDM) are connected to constitute an electronic total station. The combined instrument is a high-precision digital angle and distance measurement system, and it can calculate and display simultaneously horizontal angle, vertical angle, horizontal distance, slant distance, height and coordinate. Connected with data acquisition device via data communication interface, it can record and transmit online measurement data, applicable to cadastre measurement and engineering measurement. Before connection, the distance measuring instrument should be first started up and self-tested, prism should be collimated, and heliogram should be adjusted. Before connection and measurement, atmospheric correction factor and prism constant should be set for the distance measuring instrument. For the detailed, see the specification of EDM. 4.2 Connection Procedures with EDM By presetting, The series electronic theodolite can be connected with many types of infrared photoelectric distance measuring instrument. Take the connection between electronic theodolite and Changzhou Dadi D30 series infrared photoelectric distance measuring instrument as the example.

Prism

Target center

D3030E

KDT02

180mm

180mm

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Page 23: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

1. Loosen the handle screw in theodolite, and remove the carrying handle. 2. Fix the connecting piece of D3030E EDM in the theodolite, and tighten the fixing knob (1) in the base frame, to connect the theodolite and EDM firmly. Fix batteries in EDM. 3. Fix combined measuring instrument in the tripod and tighten it. Turn foot screws (2) in the tribrach of theodolite, to make the bubbles of circular level and plate level, and level the instrument carefully. 4. Turn the horizontal clamp (3) and vertical tangent screw (4), to make the telescope collimated with the target center. Turn horizontal adjusting knob (5), pitch angle locking knob (6) and tangent screw of pitch angle (7), to make D30 EDM aligned with the center of reflecting prism (heliogram is most strong when EDM is started up initially). The distance between the target center and the center of the reflecting prism should be equal to the distance between the centers of EDM and theodolite, which is about 185 mm. 5. Connect the socket (8) of EDM and one (9) of theodolite via data cable.

Communication interface of theodolite interface of EDM

C A

B

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2 Data input of theodolite B Data output of EDM 6 Grounding wire of theodolite C Grounding wire of EDM 4 Data output of theodolite A Data input of EDM 1、3、5 Null

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Page 24: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

4.3 Online Setting Method Before online measurement, it is necessary to confirm the distance measurement mode of EDM. If the mode is inconsistent with the memory mode of the instrument, it should be preset again. The mode includes tracing measurement, tracing measurement and fine measurement. Fine measurement includes continuous measurement, single measurement and multiple measurement. Users can set the mode as required. The set mode is saved in the instrument, and cannot lose after shutting down the instrument. To change the mode, resetting is needed. For example, connect the theodolite with Changzhou D3030E EDM in the mode of 3-time average precision measurement: 1. Start up The theodolite, and press key and key simultaneously, and the instrument goes to the status of model setting. Press key to find the model of EDM.

2. Press key to confirm the model of EDM. Blinking TrAC in LCD indicates that current mode is tracing measurement mode.

3. Press key to change blinking TraC into FinE, and current mode will be fine measurement mode. Numbers in the lower part of LCD indicates the average times in the fine measurement. 0 indicates continuous measurement, while numbers 1-9 indicate N-time average measurement mode. The factory-set value of the instrument is 1 (single measurement). Press key to change blinking letters into numbers.

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Page 25: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

Repeatedly press key to increase the number in the scope of 0-9 in increment of 1. When the number is 3, current mode is 3-time average measurement.

4. Press key to record mode setting, and shut down the instrument. 4.4 Multiple Average Measurement Make sure that The theodolite is the status of angle measurement, and D3030E is ready for measurement (LCD of EDM displays “Good”). 1. Use The theodolite to collimate the target, and D3030E to collimate the prism.

2. Press key, and press key, and The theodolite will go to the mode of distance measurement, and wait for the slant distance data transmitted from D3030E.

3. The measurement begins, and LCD shows slant distance measured each time and measurement times.

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Page 26: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

4. Finally LCD shows the average value of slant distance measured in three times.

5. Repeatedly press key and key, and the display item will change into height, slant distance and horizontal distance.

6. Press key, and The theodolite will quit the distance measurement mode and return to the previous state.

When data are transmitted between EDM and theodolite, “*” mark will display. The minimum scale of the distance is 1 mm.

When The theodolite is displaying measurement results, the buzzer will sound.

Average measurement times are set in The theodolite and can be saved after shutting down it.

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Page 27: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

4.5 Tracing Measurement Make sure that distance measurement mode is tracing measurement mode, and EDM is ready for measurement. 1. Use the theodolite to collimate the target, and D3030E to collimate the prism.

2. Press key, and press key, and the theodolite will go to the mode of distance measurement, and wait for the slant distance data transmitted from D3030E.

3. The measurement begins, and LCD shows slant distance measured each time.

4. Repeatedly press key and key, and the display item will change into height, slant distance and horizontal distance.

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Page 28: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

5. Press key, and the theodolite will quit the distance measurement mode and return to the previous state, and D3030E will return to the state of READY.

In tracing measurement mode, when data are transmitted between

EDM and theodolite, * mark is blinking. Tracing time is shorter than fine measurement time.

In tracing measurement mode, the minimum scale of the distance is 1 mm.

Before tracing measurement, The theodolite or EDM should be set in tracing measurement mode.

4.6 Continuous Measurement Make sure that the theodolite is the status of angle measurement, the distance measurement mode is continuous measurement mode, and EDM is ready for measurement. 1. Use the theodolite to collimate the target, and D3030E to collimate the prism.

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Page 29: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

Press key, and press key, and the theodolite will go to the mode of distance measurement, and wait for the continuous measurement data transmitted from D3030E.

2. The measurement begins, and LCD shows slant distance measured each time.

3. Repeatedly press key and key, and the display item will change into height, slant distance and horizontal distance.

4. Press key, and the theodolite will quit the distance measurement mode and return to the previous state, and D3030E will return to the state of READY.

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Page 30: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

4.7 Coordinate Measurement The following describe coordinate measurement mode based on the instrument point as the origin of coordinates. Coordinate measurement covers the measurement of latitude, longitude and height. If other point instead of the origin is set as the coordinate point, data acquisition device is used for coordinate measurement.

Make sure the theodolite is in the mode of angle measurement. 1. By using horizontal tangent screw, align the instrument with azimuth angle of a known point A.

2. Press key to hold the azimuth angle of the known point.

3. Collimate point A, and press key. Prepare to measure unknown point B. 4. By using horizontal tangent screw and vertical tangent screw, collimate point B.

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Page 31: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

5. Press key and key, and the theodolite will go to the mode of coordinate measurement, and wait for the slant distance transmitted from D3030E.

6. The measurement begins, and the slant distance transmitted from D3030E is displayed as N coordinate value.

7. Press key and key again, and coordinates N ( ), Z ( ) and E ( ) will display by turn.

8. Press key, and the instrument will return to normal angle measurement mode.

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Page 32: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

5. Data Transmission The theodolite theodolite provides RS-232C serial interface in the lower side. The instrument is connected with a computer or data acquisition device via communication cables. In this way, measurement data of the theodolite is transmitted to the computer or data acquisition device. Connection Output Interface

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Pins in communication interface: 1,2,3,5 . Null 4 Data input 6 Ground wire ● Data Output Format For the theodolite, in measurement mode, press key, and press key, and measurement results will be transmitted from the instrument to the computer or data acquisition device. Output format: standard RS-232, bit rate of 1200, one start bit, one stop bit, 8 digital bits, and no parity bit. Output includes 24 bytes (ASCII) as follows: Vertical Angle: 7-digit ASCII (same to display elements), plus a space (20H); Horizontal Angle: 7-digit ASCII (same to display elements), plus a space (20H); Slant Distance: 7-digit ASCII (same to display elements), plus a CR (0DH).

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Page 33: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

6. Mode Setup The theodolite series products provide various optional function modes. Users can select and set the required mode as follows: 1. Minimum reading: For electronic theodolites, 1″ (0.5 mGon) or 5″ (1.0 Ggon) is selected as the minimum reading. 2. Angle display unit: Users can select 360º system or 400 Gon as the angle display unit. 3. Automatic power off: The instrument is powered off automatically if not operated for 20 or 30 minutes. Also the function can be disabled. 4. Vertical angle measurement mode: For the mode, four patterns are set:

a. Zenith angle b. Vertical angle c. Height angle d. Slope angle The pattern of “d. Slope angle” can be selected directly by pressing

key (see Section 3.4 “Measure Grade Percent of Vertical Angle”). Other patterns are selected by mode setup. 5. Vertical axis tilt compensation function mode Such modes can be set by users as required. Once they are set, they are recorded and saved in the instrument. To change such modes, resetting is needed.

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Page 34: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

● Mode Setup Procedures Before the instrument is delivered, initial set mode is: 360º system in angle unit, minimum reading of 1″, disabled power off, zenith angle for vertical angle mode, and enabled vertical axis tilt compensation function. Assume the modes to be set as follows: 400 Gon system in angle unit, minimum reading of 1 mGon (5″), automatic power off in 30 minutes, height angle for vertical angle mode, and disabled vertical axis tilt compensation function. Proper setup procedures are described as follows: 1. Start up the instrument, and vertical angle crosses zero.

2. Press key and key simultaneously, and the instrument will go to the state of mode setup. In LCD, the upper left row is minimum reading, for instance, 1″ or 5″ in 360º system, and 0.5 or 1.0 mGon in 400 Gon system. The lower left row is automatic power off constant, for instance, 0 for disabled power off, 20 for 20 minutes, 30 for 30 minutes. The lower right row is vertical angle measurement modes, for instance, Ua for zenith angle, Ub for vertical angle, and Uc for height angle. The middle part indicates enabled compensation function. When the function is disabled, no indication exists.

3. Press key to change the number (400 Gon) in the upper right row. Repeatedly press it to alternate 360 and 400.

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Page 35: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

4. Press key to change the number (1.0 Gon) in the upper left row. Repeatedly press it to alternate 0.5 and 1.0 (Gon) or 1 and 5 (″).

5. Press key twice to change the symbol of Ua into Uc in lower right row. Repeatedly press it display Ua, Ub and Uc by turn.

6. Press key twice to change the number 30 in lower left row. Repeatedly press it display 0, 20 and 30 by turn.

7. Press key, and the TILT will disappear and the tilt compensator will be shut down. Repeatedly press it to disable or enable the compensation function.

8. After completing the above settings, press key and key simultaneously, and the instrument will record new settings and return to the state of angle measurement.

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Page 36: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

7. Zero Correction of Vertical Angle When the instrument is used to measure target A (in zenith angle) at telescope normal and reverse settings, the sum of vertical angles measured in normal and reverse settings should be 360º. If it is other than 360º, the half of the difference from 360º is “zero error”. The zero scale determines the measurement reference of the instrument. So careful correction should be conducted. Correction Procedures: (make sure that the instrument is shut down) 1. Level the instrument precisely with plate level. 2. Press key and key simultaneously, and the instrument will go to the state of zero correction of vertical angle.

3. Turn the telescope to vertical dial to cross the zero position. 4. In normal setting of the telescope, collimate target A. The upper row in LCD shows “Step 1”, and the lower row shows current vertical angle.

5. After confirming the collimation, press key. 6. By turning the instrument by 180º, in reverse setting of the telescope, collimate target A again. The upper row in LCD shows “Step 2”, and the lower row shows current vertical angle.

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Page 37: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

7. After confirming the collimation, press key. The measurement results are calculated into error compensation factor to be saved in the instrument. At the time, the correction work is finished.

8. Other Functions 8.1 Measure Distance with Crosshair Measuring distance with the crosshair in telescope reticle is another application the theodolite series products. This is a simple method, but scale station pole is needed, for example, horizontal measuring staff and apparent distance staff. By viewing through the telescope, the length between upper and lower stadia hairs multiplied by 100 is the distance from the instrument to the station pole. (The length refers to the reading from station pole between two stadia hairs.) Stadia Hairs

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Page 38: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

8.2 Tilt Correction Function Zenith angle of the instrument Axis Tilt value of the vertical of the instrument in X axis

When tilt sensor is working, the instrument automatically corrects unbalanced vertical angle and displays the correction result. To ensure fine angle measurement, it is necessary to enable automatic tilt sensor. The display information is also used in fine leveling the instrument. If “b” displays, the parameter is beyond automatic compensation scope, and manual leveling is needed.

To display tilt compensation value, press key and key simultaneously.

To return to the status of angle measurement, press key and

key simultaneously.

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Page 39: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

ρ If measurement is conducted in vibration environment or heavy wind, enabling tilt compensator will make angle values unstable. In the case, tilt compensator should be disabled. For detailed setting, see “Mode Setup”.

8.3 Illumination and Automatic Power off The theodolite series instrument provides illumination for LCD and telescope stadia. Press key twice to enable or disable lights for LCD and telescope stadia. If the function of automatic power off is enabled, the instrument will be powered off automatically if not operated for 20 or 30 minutes, to save power. For detailed setting, see “Mode Setup”.

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Page 40: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

9. Replace and Charge Battery The theodolite series instrument is supplied with dry alkaline battery and chargeable Ni-H battery, as well as fast charger. ● Remove Battery and Install Battery 1.Push the locking level downwards and remove the alkaline battery. 2.Put the battery into the instrument and Fix locking lever for the battery.

● Replace Alkaline Battery 1. Push the hook downwards and pull out the cover. Cover Aperture Extruded Part

Hook

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Page 41: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

2. Take out original batteries and put new batteries into. Pay attention to positions of positive (+) and negative (-) poles. 3. Push the extruded part of the cover into the aperture of battery box, until the cover is pressed into the box. ● Charge Chargeable Battery charger Chargeable Battery Interface of Battery

1. Take out the battery from the instrument, and connect it with the charger correctly. 2. Connect the charger with power supply (AC 220V); make sure that its

red indicator is ON. 3. The charging time is about 3-4 hours. 4. After charging, pull out the battery from the charger, and the latter

from power supply. ρ The battery should be charged in room in the temperature of 10-40℃ (50-104℉). ρ During storage, the battery can discharge. Before use, check the power level. ρ If the battery is idle, it should be charged every 3-4 months, and stored in the temperature of lower than 30℃.

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Page 42: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

10. Attach and Detach Tribrach It is convenient to detach and attach the instrument by loosening or tightening the locking lever. ● Detach Tribrach 1. Turn the locking lever anticlockwise by 180º or 200 G (when triangle mark points upwards), and loosen it. 2. Lift the instrument up, with one hand carrying the handle and another hand holding the tribrach. Instrument base

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Groove Locking level ● Attach Tribrach 1. With one hand carrying the handle, place the instrument on the tribrach so that the instrument base is aligned with the groove. 2. After alignment, turn the locking lever clockwise by 180º or 200 G (when triangle mark points downwards), and loosen it.

ρ The locking lever possibly occasionally loosens. If the instrument and the tribrach don’t need frequent detachment, you may lock the lever by tightening security screw via a screwdriver. ρ When any a foot screw looses or collimation is unstable due to loosening, it is necessary to tighten correction screws of foot screws via a screwdriver. (For each foot screw, two correction screws are set.) ρ If foot screws and base plate are loose, first loosen the fixing screw of the fixing ring, tighten the fixing ring by using adjusting pin, and tighten the fixing screw.

Page 43: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

11. Check and Adjustment ● Points on Adjustment 1 Adjust the eyepiece of the telescope properly prior to any checking operation which involves sighting through.Remember focus carefully to eliminate parallax completely. 2. Carry out the adjustment in the specific order, because the adjustments are dependent one another. Adjustments carried out in wrong sequence may even nullify previous adjustments. 3. Conclude adjustments by tightening the adjustment screws securely (but don’t tighten them more than necessary, as you may strip threads, twist off the screw or exert undue stress on bolts or other parts.) In addition, remember the correct tightening direction. 4. The attachment screws must also be tightened sufficiently upon completion of adjustments. 5. To ensure correct adjustment, repeat checking operations are needed after adjustments. 11.1 Check and Adjust the Plate Level If the tube axis of the plate level isn’t perpendicular to the vertical axis of the instrument, adjustment should be performed. ● Check 1. Place the plate level parallel to a line running through the centers of two leveling screws. By using such screws, place the bubble in the center of the plate level vial. 2. Next, revolve the instrument by 180º or 200 G around the vertical axis, and check the bubble’s movement of the plate level. If the bubble has been displaced, then proceed with the following adjustment.

● Adjustment 1. Adjust the level’s adjustment capstan screw with the accessory

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Page 44: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

adjusting pin and shift the bubble towards the center of the plate level vial, by one half of the displacement. 2. Correct the remaining 1/2 amount of the displacement with the leveling screws. 3. Revolve the instrument by 180º or 200 G around the vertical axis once more, and check the bubble’s movement. If the bubble is still displaced, repeat the adjustment.

1/2 bubble deviation

Adjusting screws 11.2 Check and Adjust the Circular Level ● Check 1. Carefully level the instrument with the plate level. If the bubble of the circular level is centered properly at this time, adjustment is not required. Otherwise, proceed with the following adjustment. ● Adjustment 2. Shift the bubble to the center of the level by adjusting three capstan adjusting screws in the circular level, with supplied adjusting pin. Adjusting screws

Tribrach base Circular level

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Page 45: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

11.3 Check and Adjust Crosshair If the vertical crosshair is not in a plane perpendicular to the horizontal axis of the telescope, adjustment is required. (Because it must be possible to use any point on the crosshair for measuring horizontal angles or alignment.) ● Check

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1. Set the instrument on the tripod and carefully level it. 2. Sight the crosshair on a well-defined point A at a distance of at least 50 meters (160 feet). 3. Next swing the telescope, and check whether the point travels along the length of the vertical crosshair. 4. If the point always travels along the vertical crosshair, the vertical crosshair is in a plane perpendicular to the horizontal axis. (Shown in left figure, no adjustment is needed.) 5. When swinging the telescope, if point A is displaced from the crosshair (shown in left figure), adjustment is required. ● Adjustment 1. Unscrew the cover of crosshair adjustment section by turning it anticlockwise. This will expose 4 eyepiece adjustment screws. 2. Loosen such screws with the supplied screwdriver. (While taking note of the number of revolutions) Make vertical crosshair coincide with A by turning the eyepiece and tighten those screws according to recorded revolutions.

Reticle retaining screws

Eyepiece

3. Check again, until point A is always traveling along the length of the vertical crosshair.

Page 46: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

11.4 Collimation of the Instrument Collimation is required to make the line of sight of the telescope perpendicular to the horizontal axis of the instrument. Otherwise, it is impossible to conduct fine measurement. ● Check 1. Set the instrument between points A and B in clear sight, respectively at the distance of about 50-60 meters. 2. Carefully level the instrument with the plate level. 3. Sight point A. 4. Loosen vertical clamp of the telescope, plunge the telescope by 180º or 200 G around the horizontal axis, so that it is pointed in the opposite direction. 5. Sight point B, at equal distance as point A. And tighten the vertical clamp. 6. Loose the horizontal tangent screw and revolve the instrument by 180º or 200 G around the vertical axis. Fix a sight on point A once more and tighten the horizontal clamp.

7. Loosen the vertical clamp, plunge the telescope by 180º or 200 G around the horizontal axis, so that point C as the crossing point of the crosshair coincides with point B. 8. If point B and C don’t coincide, adjust in the following procedures:

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Page 47: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

● Adjustment 1. Unscrew the cover of crosshair adjustment section. 2. Determine a point D between B and C so that CD distance should be 1/4 of BC distance. This is because the error of BC is four times more than the real error since the telescope has been reversed twice during checking operation.

Reticle retaining screws

3. Shift the vertical crosshair and coincide it with point D, by turning capstan adjustment screws in upper, lower, left and right sides. Upon completing the adjustment, repeat the checking operation once more. If points B and C coincide, further adjustment is not required. Otherwise, repeat the adjustment.

ρ To move the vertical crosshair, first loosen the capstan adjustment screw in one side, then tighten the capstan adjustment screw on the other side to loosened number. To loosen screws is in anticlockwise direction, while to tighten them is in clockwise direction. But rotate screws as little as possible.

11.5 Check and Adjust Optical Plummet Adjustment is required to make the line of sight of optical plummet coincide with the vertical axis. Otherwise, the vertical axis won’t be in the true vertical position when the instrument is optically plumbed. ● Check 1. Sight the center mark of optical plummet to a clear ground point. (See Section 2 “Measurement Preparations”.) 2. Revolve the instrument by 180º or 200 G around the vertical axis, and check the center mark. If the point is properly centered in the center mark, no adjustment is required. Otherwise, adjust in the following procedures:

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Page 48: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

● Adjustment 1. Unscrew the adjustment section cover of the telescope eyepiece. This will expose four capstan adjustment screws. With the supplied adjusting pin, adjust such screws to shift the center mark to the point. However, correct only 1/2 of the displacement in this manner.

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1/2 of the displacement

Capstan Optical plummet

adjustment scre ws 2. Next, use the leveling screws and coincide the point and the center mark. 3. Revolve the instrument by 180º or 200 G around the vertical axis once more, and check the center mark. If the point is properly centered in the center mark, no adjustment is required. Otherwise, repeat the adjustment.

ρ To move the center mark, first loosen the capstan adjustment screw in one side, then tighten the capstan adjustment screw on the other side to loosened number. To loosen screws is in anticlockwise direction, while to tighten them is in clockwise direction. But rotate screws as little as possible.

Page 49: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

11.6 Check and Adjust Laser Plummet Sight the laser plummet, and make sure the laser facula coincides with the vertical axis of the instrument. Otherwise, the vertical axis won’t be in the correct position when the instrument revolves. ● Check 1. Set the instrument on the tripod, about 1.5 meters high from the ground. Start up the laser plummet, observe the facula and take note of the initial position. 2. Revolve the instrument by 180º or 200 G around the vertical axis, and check the facula. If the displacement between the facula and the center mark is less than 1 mm, no adjustment is required. Otherwise, adjust in the following procedures: ● Adjustment 1. Unscrew the adjustment section cover of the telescope eyepiece. This will expose four capstan adjustment screws. With the supplied adjusting pin, adjust such screws to shift the center mark to the facula. However, correct only 1/2 of the displacement in this manner.

Displacement 1/2 of the displacement Initial position

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Adjustment screws Deviation position Laser plummet switch

2. Revolve the instrument by 180º or 200 G around the vertical axis, and check the facula. If the displacement between the facula and the center mark is less than 1 mm, the adjustment is finished. Otherwise, repeat the adjustment.

Page 50: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

12. Error Information Display and Relevant Remedies

Codes

Errors

Remedies

b No axis compensation value

Level the instrument and remeasure

E01 Over-speed of horizontal axis

Press key and remeasure

E02 Over-speed of vertical axis Press key and remeasure

E03 Error in measuring horizontal angle

Reboot the instrument and retry

E04 Error in measuring vertical angle

Reboot the instrument and retry

E05 Error in memory Reboot the instrument and retry

E06 Zero correction error of vertical angle

Correct again

E07 Collimation error in repetition measurement

Press key and remeasure

E08 Times error in repetition measurement

Press key and remeasure

E09

Data communication error

Check cables and operations, and make new communication

ρ During operating, if error codes display, the error still exists after relevant remedies. In the case, the instrument should be sent to the supplier for repair.

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13. Cautions 1. During carrying, hold the handle or the support of the instrument, and don’t hold the lens barrel. Otherwise, internal fixation components will be affected and thus the precision of the instrument will be lowered. 2. Don’t point the instrument to the sunlight without optical filter; otherwise, damages to the internal components of the instrument or injury to eyes will occur. 3. Without protection, it is forbidden to place the instrument in high-temperature environment, where the temperature inside the instrument reaches over 70℃ easily. The failure to do so shortens its service life. 4. When high-precision measurement is needed, sunlight shielding measures should be taken to shield the instrument and the tripod from sunlight. 5. Any abrupt changes of temperature lower the precision of the instrument. If the instrument is taken out from the hot car to a cold place, measurement can be made after waiting for a certain time. 6. When taking the instrument from the box, first set the box level, and open the box and remove the instrument. 7. When the instrument is placed in the box, the instrument should be aligned with white mark inside the box, with its eyepiece upward. 8. During carrying the instrument, proper vibration absorption measures should be taken to prevent the instrument from sudden shock. 9. If you want to clean the instrument after use, first brush it with a clean brush, and wipe it with a soft cloth. 10. During cleaning lenses, first brush them with a clean brush, and wipe them from their center to outside part with a clean cotton cloth dipped alcohol. 11. If any abnormality exists in the instrument, it is forbidden to dismantle the instrument and apply lubricant into it, and you should contact the supplier for solutions. 12. Except dust in the instrument box, use a clean cloth dipped neutral detergent instead of any thinner or gasoline to clean the instrument. 13. Before using the tripod, check all its parts. All screws should be flexible.

Page 52: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

14.manual for laser theodolite 1. Use method:

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a. Change the battery: As Fig 1, open the battery box and change the batteries. Please be care of the polarity of the batteries.

b. The same as normal theodolite: put the theodolite on the tripod, calibrate the long vial, 0 set. Turn on the laser part and aim at the objective, focus the

laser point to the minimum. If it is necessary, you could use target to take-over the laser point.

c. Make sure the laser point aim at the objective accurately, then you could read out the horizontal angle and vertical angle.

NOTE: Avoid direct eye exposure 2. An example:

图 2

a. As Fig 2, AB line is the axes line. If you want to confirm BC line, you need to set the laser theodolite to B point, then aim at A point and read out the horizontal angle HA and vertical angle VA of A point. At last work out the horizontal angle HC and vertical angle VC of C point, then turn the telescope to HC, VC point. At this time,the laser point is aiming at C point.

b. Confirm the line: confirm the laser line direction, set objectives along the laser line direction. It is convenient and banausic.

3. Technology parameters for laser diode

Page 53: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

Wave length of diode 635nm

Power of diode 10mW

Effective range (day) 150m

Size of the laser dot 5mm/100m

Windage between Point center and axis ≤ 5”

Power DC: 3V

Working Temperature -10℃~+45℃

4. Adjusting method Like many other mapping instruments, the laser theodolite must be readjusted after a long time unused. Please refer to the manual for the thedolite part and refer to the information below for the laser parts: After adjusted the thedolite part, please use telescope to aim at the goal, then turn on the diode. If there is windage between the top and bottom of the laser point, please adjust the 1﹑3 screws; If there is windage between the left and right of the laser point, please adjust the 2﹑4screws.

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For example: set the goal point as a norm, if the point-blank laser point appears deflexions as below, please adjust them as below: Top: tighten screw 1, loosen screw 3 Bottom: tighten screw 3, loosen screw 1 Left: tighten screw 2, loosen screw 4 Right: tighten screw 4, loosen screw 2 If you fall across other difficult problems which could not

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solved by yourself, please contact the manufacturer directly. 15. Memory function 1. Transfer measuring data to instrument.

By Press key, then press key, measuring data can be stored in the memory of instrument while data is transferred from instrument to computer. 2. memory operation press key to enter the screen for data operation. Press key to enter the screen for all memory data elimination. Press key to enter the screen for transferring all memory data to computer. Press key to return the screen for normal angle measurement 3. scan memory data process act display In normal angle measurement state, Press key and key at same time to enter memory management mode press key to display last measuring data stored press key to page up. Press key to page down Press key to display vertical data and horizontal data. Top line displays the former and bottom line the latter.

Page 55: Electronic Theodolits - SUMITOPO · 3.5 Repetition Measurement for Horizontal Angle An example of operating procedure: 1. Make sure that the instrument is in angle measurement mode

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Press key to display distance and serial number. Top line display the former and bottom line the latter. Press key to return the previous page. Press key to return normal angle measurement state. 4. eliminate all memory data process act display In the normal angle measurement state, Press key and key at same time to enter the memory management mode Press key to display whether to eliminate all memory data Press key to display the process of eliminating data All memory data is eliminated when hearing a sound ‘click’ after 12 seconds. Memory have error if a sound ‘click’ is not heard after 1 minute or screen do not change into one like right side. In this situation, please send instrument manufacturer for maintenance. Press key to return normal angle measurement state. 5. transfer all memory data into computer connect instrument port ‘OUT’ with computer port ‘COM1’ and open port adjustment software , and set up as follow: Port: COM1, baud rate: 1200, checkout bit : NONE Data bit : 8,stop bit: 1 Transfer data into computer by operating as following step: Communication apply RS232 standard. Data form: serial number for last group, first group data, second group data.

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Process act display In normal angle measurement state, press key and key simultaneous to enter memory management mode press key to display whether to transfer all memory data into computer press key to return the previous page press key. All memory data is transferred into computer when a sound ‘click’ is heard press key to return normal angle measurement state. Note: it take five minutes to complete all data transference. Data transferring can be interrupted by press key and memory operation screen will display. 16. Technical Specification

Models 2 5 5A Length 155 mm Imaging Erect

Objective aperture 45 mm Magnification 30× Field of view 1º 30′

Resolving power 3.5″ Minimum focus

distance 1.3 m

Stadia ratio 100

Telescope

Stadia constant 0 Detection system Raster incremental Reading pattern Vertical circle single/horizontal

circle across Double circle single

Minimum reading 5″/1″ (1 mGon/0.5 mGon) Accuracy * 2″ (0.5 mGon) 5″ (1.0 mGon)

Electronic angle

measurement

Measuring time Less than 0.1 s

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Display mode LCD, double face Diameter of circle 78 mm

Pattern Automatic compensation for vertical axis

Compensation scope

±3′

Correction unit 1″

Compensator

Compensation accuracy

Less than±5″

No

Communication standard

RS232C

EDM input port Supplied

Communication interface

Data output port Supplied

No

Removable Supplied Tribrach Monolithic central

model Optional

Models 2 5 5A

Imaging Erect Magnification 4× Field of view 5º

Focusing range 0.5 - ∞ Optical

Accuracy ±1 mm Light spot <=2 mm

Optical plummet

Laser Accuracy ±1 mm Dry alkaline battery AA (1.5V/500MAH)×4

Chargeable battery box 6V/1200MAH Power supply Continuous working time Dry cell: 6 hours

chargeable box: 15 hours LCD Yes Illuminator Reticle plate Yes

Circular level 8′/2 mm Level sensitivity Plate level 30″/2 mm

Working temperature -20 - +50℃ Waterproof class IP45

Net weight 4.8 kg Others

Dimensions 320 mm×160 mm×150 mm * Standard deviation based on DIN18723