Topcon GTS-821A, GTS-822A, GTS-823A, GTS-825A Instruction Manual
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Topcon GTS-821A, GTS-822A, GTS-823A, GTS-825A Instruction Manual

Topcon GTS-821A, GTS-822A, GTS-823A, GTS-825A Instruction Manual

Gts-820a series auto tracking total station
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INSTRUCTION MANUAL
AUTO TRACKING TOTAL STATION
GTS-820A
SERIES
GTS-821A
GTS-822A
GTS-823A
GTS-825A

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Summary of Contents for Topcon GTS-821A, GTS-822A, GTS-823A, GTS-825A

  • Page 1 INSTRUCTION MANUAL AUTO TRACKING TOTAL STATION GTS-820A SERIES GTS-821A GTS-822A GTS-823A GTS-825A...

  • Page 3: General Handling Precautions

    It is recommended not to take the battery out during the power is on. All the data stored is possible gone at that time. So please do your assembling or taking the battery out after the power is off. No responsibility TOPCON Corporation has no responsibility for loss of data stored in the memory in case unexpected accidents. FOREWORD...
  • Page 4 Do not disturb the rotation. Storage in the case Keep the telescope horizontally and turn the instrument to align its mark with the lower base mark (Storage mark). Keep its objective lens side downward. Storing it in the case in any other way may cause damage.

  • Page 5: Display For Safe Use

    •There is a risk of fire, electric shock or physical harm if you attempt to disassemble or repair the instrument yourself. This is only to be carried out by TOPCON or an authorized dealer, only! •Cause eye injury or blindness.

  • Page 6: User

    Use of controls or adjustment or performance of procedures other than those specified herein may result in hazardous radiation exposure. Let the laser beam reach the aimed object or the target without anybody else in the laser beam path. In case you operate laser beam open, avoid radiating laser beam to the height of man's head.

  • Page 7: Laser Safety

    The laser beam belongs not very dangerous type but we request you to keep and understand “Safety standard for users” as mentioned in the manual instruction. In case of any failure, do not disassemble the instrument. Contact TOPCON or your TOPCON dealer. Laser class of each mode is as follows.

  • Page 8: Table Of Contents

    Contents FOREWORD ..........1 General Handling Precautions .
  • Page 9 9.3.4 Collimation of the Instrument ........9-7 9.3.5 Checking / Adjusting the Optical Plummet Telescope ..... 9-8 9.4 Adjustment of Compensation Systematic Error of Instrument .
  • Page 10 14 DETACH/ATTACH OF TRIBRACH ......14-1 15 BATTERY SYSTEM........15-1 16 PRISM SYSTEM .

  • Page 11: Standard Set Composition

    Standard Set Composition The numerical value in parentheses shows the quantity. GTS-820A series (with lens cap) Battery BT-56Q Sun shade (1) Plumb bob set Plumb bob hook is included in the tool kit case. Instruction manual (Make sure that all of the above items are with the instrument when purchased.) Remarks: 1) Battery charger BC-27CR is for AC 230V use and BC-27BR is for AC 120V use.

  • Page 12: Nomenclature And Functions

    Objective lens Laser aperture (for auto-tracking) Tracking indicator Optical plummet telescope Display window (Only for GTS-821A) Operation keys (Only for GTS-821A) Base fixing screw The caution labels are pasted up GTS-820A series which describe the warning of laser beam.
  • Page 13 Telescope focusing knob Telescope grip Telescope eyepiece Plate level Centronics connector Circular level Adjusting screws for circular level 1 NOMENCLATURE AND FUNCTIONS Handle fixing knob Tribrach fixing lever Instrument height mark Instrument center mark Vertical shuttle Vertical jog Power switch...

  • Page 14: Display

    1.2 Display • Display In general upper four lines display the measuring data, and the bottom line displays the soft key function which is changed by the measuring mode. Contrast • The contrast and illumination of display window are adjusted by star (H) key. •...

  • Page 15: Operating Key

    The symbol marks for Auto-tracking and Auto-collimating Auto-collimating (Laser is emitting) GTS-820A series is in auto- collimating status. Waiting (Laser is emitting) GTS-820A series is in waiting status. Failure in auto-collimating. (Laser is off) GTS-820A series could not find the target prism during auto- collimating.

  • Page 16: Function Key (Soft Key)

    1.4 Function Key (Soft Key) The Soft Key Functions are labeled on the bottom of display. Soft Key functions are different for each measurement. 87°55'45"5 HR: 180°44'12"5 [F1] 87°55'45"5 HR: 180°44'12"5 0SET HOLD P1 TURN HSET R/L V/% TILT P2 Angle measuring 90 10'20"5 HR: 120 30'40"5...
  • Page 17 Soft Page Display Starts slope distance measurement mode. MEAS Changes Continuous/ N-times (single) measurement mode. MODE Changes Fine / Coarse(1mm) /Coarse(10mm) mode. Slope Angle measurement mode. distance Horizontal distance measurement mode. Displays the horizontal distance measuring data after N-times or single measurement. Coordinate measurement mode.

  • Page 18: Star Key (*Key) Mode

    1.5 Star key ( key) mode Press the (H) key to view the instrument options. Since there are three screens of options, press [F6](1 ) soft key to view the next screen. The following instrument options can be selected from the (H): Screen One •...
  • Page 19 See Section 3.4 “Setting Parameters for Auto-Tracking” . 5) Auto Inversion Pressing the [F4] key causes the instrument to reverse and turn the telescope and instrument automatically. To stop auto rotating in case of emergency, press any keys except POWER key.
  • Page 20 9) Reticle illumination (OFF/Low/Middle/High) Press the [F6] key to get to Screen 2 on the display. Press the [F4] key to turn the reticle illumination ON. Continuing to press [F4] will change the intensity options. 10) View free memory The amount of free memory for the card or internal memory can be displayed. Press the [F6] key to get to Screen 2 on the display.
  • Page 21 13) Tracking Indicator A man who is staying on line with the direction of GTS-820A series or automatic tracking status by emitted LED light (orange color) from GTS-820A series. Operation • Pressing [F3] key on screen three functions Tracking Indicator. The tracking indicator status will be changed according to the type of auto tracking mode and its conditions.

  • Page 22: Auto Power Off

    1.8.2 Auto Inversion Pressing the [F4] key in Star Key mode causes the instrument to reverse and turn the telescope and instrument automatically. To stop auto rotating by auto inversion key in case of emergency, press any keys except POWER key.

  • Page 23: Using Together With Rc-2Ii Remote Control System

    1.9 Using together with RC-2II Remote Control System Using together with RC-2II Remote Control System makes it possible to optical communicate between the instrument and remote controller RC-2RII, the prism side. This gives easy operation by one man surveying in applying programs. Also connecting data collector to remote controller, you can manage communication reciprocally between the instrument and direct to data collector.

  • Page 24: Using Connecting With Personal Computer (Pc)

    1.10 Using connecting with Personal Computer (PC) The auto-tracking function or auto collimating function makes easy remote control of the instrument from PC. The followings are the main communication commands and explanations. How to communicate or more informations of communication command, you can see the interface manual which provided optionally.

  • Page 25: Preparation For Measurement

    PREPARATION FOR MEASUREMENT 2.1 Power Connection (unnecessary if on-board Ni-MH battery BT-56Q is used) See below for connecting the external battery pack. Battery pack BT-3Q Power cord , PC-5 is used. Large capacity battery pack BT-3L Power cord PC-6 is used. When using a external battery, the rechargeable battery BT-56Q should be attached (The instrument will lack in balance if the internal battery BT-56Q is removed.) The external battery and the internal battery can be used at the same time.

  • Page 26: Setting Instrument Up For Measurement

    Mount the instrument to the tripod. Level and center the instrument precisely to insure the best performance. Use tripods with a tripod screw of 5/8 in. diameter and 11 threads per inch, such as the Type E TOPCON wide- frame wooden tripod. Reference: Leveling and Centering the Instrument 1.

  • Page 27: Power Switch Key On

    2.3 Power Switch Key ON Power ON Input a password Self check mode X:+0°00'00" Y:+0°00'00" Self checking Self checking 2003-10-10 14:30 Prog Std Mem Comm Adj Para Main menu icons Self checking option The self checking function is to check internal communication and tilt sensor offset value. When ambient temperature is changed or the instrument is not balanced by its internal battery is attached or detached, the self checking is recommended.

  • Page 28: Battery Level Indicator

    2.4 Battery Level Indicator The battery power indicator shows the level of battery strength. 2003-10-10 15:30:40 Prog Std Mem Comm Adj Para * Battery power remaining display is omitted in this manual. Note: 1) The battery operating time will vary depending on the environmental conditions, such as ambient temperature, charging time, and the number of times charging and discharging the battery.

  • Page 29: Main Menu Icons

    2.5 Main Menu Icons The main menu icons are as follows. Select the menu by pressing soft keys ([F1]~[F6]). 2003-07-10 15:30:40 Prog Comm Adj MEMORY MANAGE MODES Display memory status Protect/Eras/Rename/Copy Files, Initialize a card or internal memory. (See Chapter 6 “MEMORY MANAGE MODES” .) STANDARD MEASUREMENT MODES Angle measurement Distance measurement...

  • Page 30: Dual Axis Compensation

    2.6 Vertical and Horizontal Angle Tilt Correction When the tilt sensors are activated, automatic correction of vertical and horizontal angle for mislevelment is displayed. To ensure a precise angle measurement, tilt sensors must be turned on. The display can also be used to fine level the instrument.

  • Page 31: Compensation Of Systematic Error Of Instrument

    Also these errors can be compensated by software collimating one side of the telescope that is carried out to delete the error by turning in normal and reverse both sides of telescope so far. To adjust or reset the above compensation value, see Chapter 9 “CHECK AND ADJUSTMENT” .

  • Page 32: Resume Mode On/Off

    *1) When the same alpha key is to be typed two or more times consecutively, press [F4]( characters. This moves the cursor to the right. *2) Extensions can not be changed. 2 PREPARATION FOR MEASUREMENT Option Rename Old name [TOPCON New name [ Alpha [F1] Rename Old name [TOPCON...

  • Page 33: Memory Card

    2.10 Memory Card How to insert a memory card How to extract a memory card 2 PREPARATION FOR MEASUREMENT 1) Pull the card cover lever to open the card cover. 2) Insert a memory card until the card guide is up. 3) Close the card cover.

  • Page 34: Inclination Of Prism And Measuring Error

    2.11 Inclination of Prism and Measuring Error For the best results, aim or point prisms in the direction of the GTS-820A series so that maximum signal can be returned to the instrument. Sighting prism obliquely because of inclined settings, may result in measuring errors.
  • Page 35 Prism type-2 (Normal prism) Distance Measuring error Increasing distance range ( mm ) Inclined angle (degree) Prism type - 3 or 5 (Prism unit A2/A3) Distance Measuring error Increasing distance range ( mm) Inclined angle (degree) (Example) In case Prism constant value (C) = 0mm, Prism inclination = 20°, Measuring distance = 100m by Prism type-2 : Distance error is : From the graph prism type-2, the distance error shows in increasing range quantity 2.5mm along...

  • Page 36: Automatic Tracking / Automatic Collimation

    AUTOMATIC TRACKING / AUTOMATIC COLLIMATION Cause eye injury or blindness. Do not stare into beam. Let the laser beam reach the aimed object or the target without anybody else in the laser beam path. In case you operate laser beam open, avoid radiating laser beam to the height of man's head. It is quite possible for the beam to enter into one's eyes, and it is possible to lose visual sight temporarily, and lose one's caution and awareness of other dangers - avoid glaring beam.
  • Page 37 Choose measuring modes by pressing the soft keys. Measuring starts. Sample: Horizontal distance measuring If the target prism is lost during auto tracking status, the instrument will automatically change to Waiting status and symbol mark will be switched. If the target is found during Waiting status, tracking resumes, and if not, status changes to Searching status.

  • Page 38: Automatic Collimation

    3.2 Automatic Collimation The function enables to collimate automatically so that the instrument searches for the center of the prism when the telescopic is aimed a prism roughly. Use this mode for the object which is stable. You can select Fine or Course mode for the distance measurement in auto-collimation. Operating procedure Manually collimate the target prism roughly using V/H jog/shuttle.

  • Page 39: Range Of Laser For Auto-Tracking And Auto-Collimating

    3 AUTOMATIC TRACKING / AUTOMATIC COLLIMATION 3.3 Range of Laser for Auto-tracking and Auto-collimating The range of laser at the long distance is within ±30' as shown in following. So you had better collimate the prism so that the prism may be located within this range of laser in the first step. As for it, rapid automatic collimating and automatic tracking becomes possible.

  • Page 40: Setting Parameters For Auto-Tracking

    2) Search Range The search range is the area to searched for the prism by rotating the telescope and body in Searching. The Search range is decided from the point where the prism lost, and the values will be set to plus and minus directions in horizontal and vertical.
  • Page 41 [Example] SEARCH RANGE : 10 in horizontal, 5 in vertical Search range Point where prism lost Setting Search range requires consideration. The items to think about: optical path interrupted by other objects; collimated point from GTS-820A series to prism is shifted after Turning and Searching Command;...

  • Page 42: How To Set The Parameters

    3.4.2 How to set the parameters Sample setting: Set TRACKING SPEED to [MACHINE CONTROL] Operating procedure Press the star [ ] key to be in star key mode. Press the [F3] key to select the setting parameters for auto-tracking. Press the [F6](P ) key to get the menu on page 2.

  • Page 43: Standard Measurement Mode

    Reference : How to Collimate Point the telescope toward the light. Turn the diopter ring and adjust the diopter so that the cross hairs are clearly observed. (Turn the diopter ring toward you first and then backward to focus.) Aim the target at the peak of the triangle mark of the sighting collimator.

  • Page 44: Switching Horizontal Angle Right/Left

    4.1.2 Switching Horizontal Angle Right/Left Make sure the mode is Angle measurement. Operating procedure Press [F6]( )key to get the function as on page 2. Press [F3](R/L) key. The mode Horizontal angle Right (HR) switches to (HL) mode. Measure as HR mode. Every time pressing [F2](R/L) key is pressed, HR/HL mode switches.

  • Page 45: Vertical Angle Percent Grade(%) Mode

    2) Setting a Horizontal Angle from the Keys Make sure the mode is Angle measurement. Operating procedure Collimate the target. Press [F6]( ) key to get the function as on page 2, and press [F2](HSET) key. Input the required horizontal angle. For example:70 20'30"...

  • Page 46: Automatic Rotation To A Required Horizontal And Vertical Absolute Angle

    4.1.5 Automatic Rotation to a Required Horizontal and Vertical Absolute Angle The GTS-820A series can be rotated to a required horizontal and vertical absolute angle by direct key input. Example: Both vertical and horizontal angle Operating procedure Press the [F6]( ) key to display the second soft key page.

  • Page 47: Distance Measurement

    ATMOSPHERIC CORRECTION” . 4.2.2 Setting of the Correction for Prism Constant Topcon's prism constant value is 0. Set correction for prism at 0. If the prism is of another manufacture, the appropriate constant shall be set beforehand. Setting the prism constant value is in the STAR key (H) mode, see Chapter 10 “SETTING THE PRISM CONSTANT VALUE”...

  • Page 48: Distance Measurement (Single/N-Times Measurement)

    4.2.4 Distance Measurement (Single/N-times Measurement) When presetting the number of times, the instrument measures the distance as the setting times and the average distance will be displayed. When presetting the number of times as 1, it does not display the average distance, because of single measurement.
  • Page 49 The average value is displayed following with buzzer sound and “ * ” mark disappears. Press [F1](MEAS) key for re-measuring after the measurement in held. To return to the continuous measuring , press [F1](MEAS) key twice. To return to the angle measuring mode , press [F3](VH) key. 4 STANDARD MEASUREMENT MODE 90°10'20"...

  • Page 50: Fine / Coarse Measuring Mode

    4.2.5 Fine / Coarse Measuring Mode •Fine mode : This is a normal distance measuring mode. Measurement time The unit to be displayed is 0.2mm or 1mm. (0.001ft or 0.005ft) •Coarse mode : This mode measures in shorter time than in fine mode. (1mm) Use this mode for the objects which may be slightly unstable.

  • Page 51: Stake Out (S-O)

    4.2.6 Stake Out (S-O) The stake out distance is the difference between the measured distance and the preset distance. Display value = Measured distance -Standard (Preset) distance The value on the display is the distance in which the rod person must move toward or away from the instrument.

  • Page 52: Coordinate Measurement

    4.3 COORDINATE MEASUREMENT 4.3.1 Setting Coordinate Values of Occupied Point The occupied point coordinates (NEZ) can be preset in the GTS-820A Series to calculate the unknown point coordinates. It is possible to retain the occupied coordinates in memory once the power is turned OFF if the (NEZ mem) is ON in the Parameter Setting Modes.
  • Page 53 Input new data and press [ENT] key. *1) Measuring starts. *1)To cancel the setting, press [F1](EXIT) key. 4 STANDARD MEASUREMENT MODE N coord. Setting occ. point [ENT] N : 0.0000 E coord. E : 0.0000 [ENT] Z : 0.0000 Z coord. EXIT [ENT] Complete...

  • Page 54: Setting Of The Instrument Height / Prism Height

    4.3.2 Setting of the Instrument Height / Prism Height The instrument height and prism height are used to compute the ground elevation of the unknown point. If the option to store NEZ is (on), the instrument and prism heights will be stored in memory when power is turned off.

  • Page 55: Execution Of Coordinate Measuring

    4.3.3 Execution of Coordinate Measuring Measure the coordinates by entering the instrument height and prism height, coordinates of unknown point will be measured directly. When setting coordinate values of occupied point, see Section 4.3.1“Setting Coordinate Values of Occupied Point” . When setting the instrument height and prism height, see Section 4.3.2“Setting of the Instrument Height / Prism Height”...
  • Page 56 The result will be shown. *1) In case the coordinate of instrument point is not entered, (0,0,0) will be used as the default for the instrument point. The instrument height will be calculated as 0 when the instrument height is not entered. *2) The prism height will be calculated as 0 when the prism height is not set.

  • Page 57: Data Output

    Output at the coarse (10mm) mode is displayed as distance data only (HD, VD or SD). The information of GTS-820A series regarding tracking auto-tracking are added to the protocol of Topcon Total Station system so far. Also you can add utility information such as battery remaining, EDM mode, auto-tracking mode, normal/ reversed face information, Tilt information if you like.
  • Page 58 Control by interface for Topcon AP-L1A system, see Chapter 5 “ PROGRAM MODES” -[EXT.LINK] section. When using other wireless modem or optical remote controller, select to [None] for the protocol of communication in Chapter 8 “PARAMETERS SETTING MODE” . 4 STANDARD MEASUREMENT MODE...

  • Page 59: Program Modes

    PROGRAM MODES 2003-10-10 15:30:40 Prog Std Mem Comm Adj Para PROGRAM MODE (APPLICATION MEASUREMENT) 1.Setting a Horizontal Angle 2.Retaining a Coordinate (STORE-NEZ) 3.Remote Elevation Measurement (REM) 4.Missing Line Measurement (MLM) 5.Line Measurement (LINE) 6.Offset Measurements (OFF SET) 6.External Link The loaded measuring programs are added on this menu. Programs F1 BS F2 STORE...

  • Page 60: Setting A Direction Angle For Backsight Orientation

    5.1 Setting a Direction Angle for Backsight Orientation (Entering the instrument and backsight coordinate values) From the coordinate value of backsight point (bearing point) and instrument point, the direction angle from the instrument point to the backsight point can be set. Backsight point A Direction angle Example: Backsight point A : N coordinate 54.321m, E coordinate 12.345m...

  • Page 61: Retaining A Coordinate (Store- Nez)

    5.2 Retaining a Coordinate (STORE- NEZ) Suppose the instrument P0 moves to P1, P2, P3, etc. and the coordinate at P1, P2, P3 etc., last point will be retained in the memory, after moving, as from the origin point. Known point A Direction angle Origin (0,0,0) Set the coordinate value of instrument point P...
  • Page 62 Press [F6](SET) key. Coordinate of P1 will be displayed. Press [F5](YES) key. Coordinate of P1 will be decided. The display return to main menu. Turn power off and move instrument to P1 ( Prism P1 move to P0). After the instrument is set up at P1, turn power on and be measurement possible.

  • Page 63: Remote Elevation Measurement (Rem)

    5.3 Remote Elevation measurement (REM) To obtain elevation of the point at which setting the target prism is not possible, place the prism at any point on the vertical line from the target then carry out REM procedure as follows. Instrument 1) With prism height (h) input (Example :h=1.5m) Operating procedure...
  • Page 64 Horizontal distance (HD) between the instrument and prism will be shown. Press [F6](SET) key. The prism position will be decided. *1) Collimate target K. Vertical distance (VD) will be shown. *2) *1)To return to procedure , press [F2](P.h) key. To return to procedure , press [F3](HD) key.
  • Page 65 Press [F6](SET) key. The prism position will be decided. Collimate ground point G. Press [F6](SET) key. The position of point G will be decided. *1) Collimate target K. Vertical distance (VD) will be shown. *2) *1)To return to procedure , press [F2](HD) key. To return to procedure , press [F3](V) key.

  • Page 66: Missing Line Measurement (Mlm)

    5.4 Missing Line Measurement (MLM) Measurement for horizontal distance (dHD), slope distance (dSD) and elevation (dVD) between two target prisms. MLM mode has two mods. 1.(A-B, A-C):Measurement is A-B, A-C, A-D,... 2.(A-B, B-C):Measurement is A-B, B-C, C-D,... Prism A Instrument [Example] 1.
  • Page 67 Collimate prism A, and press [F1](MEAS) key. Horizontal distance (HD) between the instrument and prism A will be shown. Press [F6](SET) key. Collimate prism B and press [F1](MEAS) key. Horizontal distance (HD) between the instrument and prism B will be shown. Press [F6](SET) key.
  • Page 68 Press [F6]( SET) key. The horizontal distance (dHD) relative elevation (dVD) and slope distance between prism A and C. To measure the distance between points A and D, repeat procedure *1)To return to main menu, press[F1](EXIT) and [F5](YES) key. [F6] .

  • Page 69: Line Measurement (Line)

    5.5 Line Measurement (LINE) This mode is useful to obtain the line height. Prism A [Example:Input of prism height] Operating procedure Press [F6](MORE) key from programs menu to get the next page of programs. Press [F1](LINE) key. Press [F1](YES) key. Input the prism height and press [ENT] key.
  • Page 70 Collimate prism A and press [F1](MEAS) key. The distance measurement will start. Horizontal distance is displayed. Press [F6] (SET) key, and horizontal distance will be recorded. Collimate prism B and press [F1](MEAS) key. The distance measurement will start. Horizontal distance is displayed. Press [F6] (SET) key, and horizontal distance will be recorded.
  • Page 71 Rotate the vertical tangent screw, and sight ground point G. Press [F6] (SET) key, line height (LH) and horizontal distance (Off) are displayed. To finish the measurement, press the [F1](EXIT) or [ESC] key. To return to operation procedure To return to operation procedure The NEXT key is used when the ground point G is not clear and you would like to check another ground point G on the same vertical line.

  • Page 72: Offset Measurement (Offset)

    5.6 Offset measurement (OFFSET) There are four offset measurement modes in the Offset Measurement. Angle offset Distance offset Plane offset Column offset Offset Measurement Menu Programs F1 LINE F2 OFFSET F3 EXT.LINK OFFSET MEASUREMENT 1.ANGLE OFFSET 2.DIST. OFFSET 3.PLANE OFFSET 4.COLUMN OFFSET Outputting the Measurement Data The results of offset measurement can be output to external device.

  • Page 73: Angle Offset

    , you can select one of two ways. [HOLD] is to fix vertical angle to the prism position even updown the telescope position, and [FREE] is to gear vertical angle to the updown of telescope movement. In case following the...
  • Page 74 Select the vertical angle [FREE] or [HOLD]. Collimate prism P, and press the [F1](MEAS) key. *1) The horizontal distance from the instrument to the prism will be measured. Collimate point A using the horizontal motion clamp and horizontal tangent screw. To show the slope distance of point A the [F2](SD) key.

  • Page 75: Distance Offset Measurement

    5.6.2 Distance Offset Measurement The measurement of a place apart from a prism is possible by inputting offset horizontal distance of front and back / right and left. oHD sign Instrument height When measuring coordinates of ground point A When measuring coordinates of point A Operating procedure Press [F6](MORE) key from programs menu to get to the next page of programs.
  • Page 76 If you reset the offset value, press the [F6](INP) key and input the value. *1) Collimate prism using the horizontal motion clamp and horizontal tangent screw. Press the [F1](MEAS) key. *2) The offset measurement data will be shown. To show the slope distance of point A the [F2](SD) key.

  • Page 77: Plane Offset Measurement

    5.6.3 Plane Offset Measurement Measuring will be taken for the place where direct measuring can not be done, for example distance or coordinate measuring for a edge of a plane. Three random target points (P1, P2, P3) on a plane will be measured at first in the plane offset measurement to determine the measured plane.
  • Page 78 Collimate prism P1, and press the [F1](MEAS) key. Measuring will start. After measuring, the second point measurement screen will be shown. Measure the second and third prism in the same way. *1) The instrument calculates and displays coordinate and distance value of cross point between collimation axis and of the plane.

  • Page 79: Column Offset Measurement

    5.6.4 Column Offset Measurement If it is possible to measure circumscription point (P1) of column directly, the distance to the center of the column (P0), coordinate and direction angle can be calculated by measured circumscription points (P2) and (P3). The direction angle of the center of the column is 1/2 of total direction angle of circumscription points (P2) and (P3).
  • Page 80 Collimate the left side of the column (P2) and press the [F6](SET) key. After the measurement, angle measuring display of the right side (P3) will be shown. Collimate the right side of the column (P3) and press the [F6](SET) key. After the measurement, the distance between the instrument and center of the column (P0) will be calculated and displayed.

  • Page 81: External Link

    (1)Setting communication course Select a communication course according to the using optional device. 1) Cable In case connecting personal computer or other than Topcon's designated wireless modem to the RS-232C connector. 2) RADIO MODEM In case connecting Topcon's designated wireless modem.
  • Page 82 In case connecting Topcon's designated wireless modem, simply select communication course as "RADIO MODEM" it is enough to do setting of parameter automatically. In case connecting personal computer or other than Topcon's designated wireless modem, it is required to do parameters setting for RS-232C before using.
  • Page 83 Press the [F2] key to select [2PARAMETER (CABLE)]. Speed setting screen will appear. Press the [F3]( ) or [F4]( ) key to select baud rate then press the [F1](SET) key to decide. Set bit format in the same way. Set DELIMITER (Terminate) in the same way. Set RTS in the same way.
  • Page 84 heat simmer, or happens cut off the optical path, in such cases it takes long time for communication or results failure. You are offered to set [Divided] item. 4) REC TYPE Select the option to record the data for the distance measurement. REC-A Measure the distance again and record the updated distance.

  • Page 85: Carrying Out Communication

    Set channels : A, B, C... 2) REC TYPE Select the option to record the data for the distance measurement. REC-A : Measure the distance again and record the updated distance. REC-B : Record the data for the last distance measurement on the display. Operating procedure Execute Section 5.7.1“Starting compatible communication program of AP-L1A”...

  • Page 86: Memory Manage Modes

    [F6] 6 MEMORY MANAGE MODES Display Memory manage F1 Internal memory F2 Card memory Memory size 1967KByte Memory free 1951KByte Battery expire 2004/01 Init. File .DAT 1597 12-25 TOPCON .DAT 1089 10-05 .TXT 2450 09-11 HILL .DAT 31777 08-19 Copy...

  • Page 87: Protect A File

    Protect [F1] [TOPCON .DAT] [F5] Operation Display .DAT TOPCON .DAT .TXT HILL .DAT Select a file [F2] Rename Old name [TOPCON New name [ Alpha Enter name [ENT] 1597 12-25 1089 10-05 2450 09-11 31777 08-19 Copy 1597 12-25...

  • Page 88: Deleting A File

    Select a file using [F5]( ) key or [F6]( ) key. Press [F4](Copy) key. Confirm the file name, and press [F5](YES) key. 6 MEMORY MANAGE MODES Operation Display .DAT TOPCON .DAT .TXT HILL .DAT Select a file Delete [F3] [TOPCON .DAT]...

  • Page 89: Initializing Memory

    *1) To reset the card memory expire, press [F6] (NO) key and input new data. 6 MEMORY MANAGE MODES Operation Display MEMORY manage F1 Internal memory F2 Card memory [F2] Card name [TOPCON Memory size Memory free Card battery expire Init [F1] RAM card memory format [F5]...

  • Page 90: Communication Modes

    COMMUNICATION MODES 2003-10-10 15:30:40 Prog Std Mem Comm Adj Para The communication modes are used for setting the Baud rate (Protocol), receiving a file (Data file in) and sending a file (Data file out). A data transfer program on your PC that supports (YMODEM) will be necessary to send or receive data files.

  • Page 91: Data File In

    F1 Protocol F2 Data file in F3 Data file out [F3] Data file out F1 Internal memory F2 Card memory [F1] to[F2] .DAT [ENT] TOPCON .DAT .TXT HILL .DAT Data file out Data file out Select a file [ENT] [TOPCON .DAT]...

  • Page 92: Parameters Setting Mode

    PARAMETERS SETTING MODE 2003-10-10 15:30:40 Prog Std Mem Comm Adj Para PARAMETERS SETTING MODE In this mode, setting of parameters regard with measuring, displaying and communications will be done. When a parameter is changed and set, the new value is stored into memory. Press [F6] key from the main menu icons, the following display will be shown.
  • Page 93 Dist. Unit METER /FEET C.F. m/ft Us.f /Intl.f Min. Dist. OFF / ON S/A buzz. OFF / ON W-corr. OFF/ 0.14 / 0.20 N/E/Z mem OFF / MEM.ON N/E- ord. NEZ / ENZ Temp. Unit °C / °F Pres. Unit mmHg/inHg/hPa R/L Lock OFF / ON...

  • Page 94: Parameters For Communication

    8.1.2 Parameters for communication The following settings are effective for standard measurement modes only. You are requested to set each time of each application such as EXTERNAL LINK (in Program modes) or other application software. Serial port Menu Selecting Item S.Port RS232C /RC Setting parameters for RS232C...
  • Page 95 Retry Std. / Div. Delimit ETX / CRLF REC-A/B A / B NEZ-REC Std / Exp Trk State OFF / ON B. Rate 4800 Data. L Parity none Stop Bit 8 PARAMETERS SETTING MODE Selecting the method of the data re-transmitting. Std (Standard) : This is offered in normal condition.

  • Page 96: Setting Parameters

    8.2 Setting Parameters 8.2.1 Parameters for Measurement and Display [Example setting] S/A BUZZER: OFF, Atmospheric pressure: hPa Operating procedure Press the [F6] key from the main menu icons. Press the [F1] (Measurement) key. Select the menu by pressing [F6]( ) key. (Example: S/A buzz.)) Press [F3]( ) key, and select OFF.

  • Page 97: Parameters For Communication

    8.2.2 Parameters for Communication Sample setting: RS232C Operating procedure Press the [F6] key from the main menu icons. Press the [F2] (Communication) key. The screen in the right is indicated. Press the [F2](Set RS232C) key. The next steps are same as Section 8.2.1- Parameters Setting for communication, refer to the section 8.2.1.
  • Page 98 The password option screen will appear. When accessing the password option for the first time, the [OFF] indicator will appear on the upper left corner of the screen. To establish a password you can press the [F5](ON) key to turn on the option and establish a password.
  • Page 99 To turn off the password option, press [F6](OFF). The [ON] indication changes to [OFF] and the screen automatically changes back to the main menu icons. Changing a Password Once a password is established, you can change the original password. The new password takes the place of the original password in memory.

  • Page 100: Check And Adjustment

    4) Once again, measure at a calibrated baseline and compare with the instrument base line the length. 5) If using above procedure and no difference is found from the instrument constant at the factory or a difference of over 5mm is found, contact TOPCON or your TOPCON dealer. 9 CHECK AND ADJUSTMENT...

  • Page 101: Checking The Optical Axis

    9.2 Checking the Optical Axis To check if the optical axis of EDM and theodolite are matched, follow the procedure below. It is especially important to check after adjustment of the eyepiece reticle is carried out. 1) Position a prism about 30 to 50m apart from GTS-820A series. 2) After the power switch ON of GTS-820A series, collimate the center of the prism.
  • Page 102 13) Carry out as Horizontal direction confirmation. Compare the reading Vertical angle value and calculated value. If the difference is within 1’ 30”, no problem for use. If the difference is more than mentioned value, contact with your Topcon dealer or Topcon. [Example] 90°12’ 30”...

  • Page 103: Checking/Adjusting The Theodolite Functions

    9.3 Checking/Adjusting the Theodolite Functions Pointers on the Adjustment 1) Adjust the eyepiece of the telescope properly prior to any checking operation which involves sighting through the telescope. Remember to focus properly, with parallax completely eliminated. 2) Carry out the adjustments in the order of item numbers, as the adjustments are dependent one upon another.

  • Page 104: Checking /Adjusting The Plate Level

    9.3.1 Checking /Adjusting the Plate Level Adjustment is required if the axis of the plate level is not perpendicular to the vertical axis. Check 1) Place the plate level parallel to a line running through the centers of two leveling screws, say, A and B.

  • Page 105: Adjustment Of The Vertical Cross-Hair

    Adjustment is required if the vertical cross-hair is not in a place 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 vertically running lines).

  • Page 106: Collimation Of The Instrument

    9.3.4 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 will not be possible to extend a straight line by direct means. Check...

  • Page 107: Checking / Adjusting The Optical Plummet Telescope

    9.3.5 Checking / Adjusting the Optical Plummet Telescope Adjustment is required to make the line of sight of the optical plummet telescope coincide with the vertical axis (otherwise the vertical axis will not be in the true vertical above the reference point when the instrument is optically plumbed).

  • Page 108: Adjustment Of Compensation Systematic Error Of Instrument

    The above mentioned errors will be compensated by software, which calculated internally according to each compensation value. Also these errors can be compensated by software collimating one side of the telescope that is carried out to delete the error by turning in normal and reverse both sides of telescope so far.
  • Page 109 FACE(1). * 2),3),4) The title display will be shown automatically. Collimate target B (more than ±10 from the level ) in reverse telescope setting (FACE(2)). *5) Press [F6](SET)key. *1) Turn the telescope in normal telescope setting(FACE(1)).

  • Page 110: Showing Constant List And Switch On/Off Compensation Systematic Error Of Instrument

    9.5 Showing Constant List and Switch ON/OFF Compensation Systematic Error of Instrument [Example setting: Switch OFF the compensation] Operating procedure Press [F5] key from the main menu. Press [F2] key . Correction values are displayed. Press [F6](OFF) key. Press [F1](EXIT) key. The display returns to main menu.

  • Page 111: How To Adjust The Date And Time

    9.6 How to adjust the date and time Operating procedure Press [F5] key from the main menu. Press [F3] key. Current date will be on the display. Press [F5] (YES) key. The cursor will blink on the first digit to type in a numeric value.

  • Page 112: How To Set The Instrument Constant Value

    9.7 How to Set the Instrument Constant Value To set the Instrument constant which is obtained in section 9.1 “Checking and Adjusting of Instrument Constant”, follow as below. Operating procedure Press the [F5] key from the main menu. Press [F4] (Instrument constant) key. Press [F5] (YES) key .

  • Page 113: Reference Frequency Checking Mode

    9.8 Reference Frequency Checking Mode The beam modulated by the reference frequency of EDM is emitted continuously. This mode is used for frequency test mainly. Operating procedure Press the [F5] key from the main menu icons. Press the [F6]( ) key to get to next page on the display.

  • Page 114: Inspection And Adjustment Of Optic Axis For Auto -Tracking

    9.9 Inspection and Adjustment of Optic Axis for Auto -Tracking Activates auto tracking to the prism. Confirm if the center of telescope reticle and the center of the prism is coincided. Any error between them requires adjustment according to the following procedure.
  • Page 115 Press the [F6](MEAS) key. The measurement starts. The shifted quantity between H angle and V angle measured from the measuring will be calculated internally. Confirm the coincident of cross hair line and the senter of prism, press the [F5](YES) key. The compensation value will be set and memorized to GTS-820A series.

  • Page 116: Setting The Prism Constant Value

    SETTING THE PRISM CONSTANT VALUE The prism constant value of Topcon is set to zero. When using prism other than Topcon's, it is necessary to set the prism constant correction value of that specific prism. Once you set the correction value for prism constant, it is retained after power is OFF.

  • Page 117: Setting Atmospheric Correction

    SETTING ATMOSPHERIC CORRECTION The velocity of light through air is not constant and depends on the atmospheric temperature and pressure. The atmospheric correction system of this instrument corrects automatically when the correction value is set. 15 C/59 F, and 1013.25hPa / 760mmHg / 29.9 inHg is as a standard value for 0ppm in this instrument.
  • Page 118 The display returns STAR key menu. *1) Range : Temp. -30.0 C to +60.0 C (0.1 C step) Pres. 560.0 to1066.0hPa (0.1hPa step) , 420.0 to 800.0mmHg (0.1mmHg step) 16.5 to 31.5inHg (0.1inHg step) *2) When the atmospheric correction value, which is calculated from the input temperature and pressure values, exceeds the range ±...
  • Page 119 11 SETTING ATMOSPHERIC CORRECTION Atmospheric Correction Chart (For your reference) The atmospheric correction value is obtained easily with the atmospheric correction chart. Find the measured temperature in horizontal, and pressure in vertical on the chart. Read the value from the diagonal line, which represents the required atmospheric correction value. Example: The measured temperature is +26°C The measured pressure is 1013 hPa...
  • Page 120 11 SETTING ATMOSPHERIC CORRECTION 11-4...
  • Page 121 11 SETTING ATMOSPHERIC CORRECTION 11-5...

  • Page 122: Correction For Refraction And Earth Curvature

    The instrument measures distance, taking into account correction for refraction and earth curvature. Note: If the telescope is positioned within ±9° from the nadir or zenith, no measurement will result even if the correction function for refraction and earth curvature works.

  • Page 123: Power Source And Charging

    POWER SOURCE AND CHARGING 13.1 Rechargeable Battery BT-56Q To remove Remove the battery while pulling both battery fixing levers. To charge Plug the charger into the outlet. Connect the charger connector to the battery, then charging will start. Preparatory charging will start.* (The red lamp of the charger will blink.) When the preparatory charging is completed, the charging status will be switched to quick charging automatically.

  • Page 124: Precaution When Charging Or Storing Batteries

    Do not charge or discharge continuously, otherwise the battery and the charger may be deteriorated. If charging or discharging is necessary, use the charger after stopping charge for approximately 30 minutes. Do not charge the battery or discharge the battery in right after the battery is charged, it causes deterioration of the battery in rare cases.

  • Page 125: Detach/Attach Of Tribrach

    DETACH/ATTACH OF TRIBRACH The instrument is easily detached or attached to the tribrach. Tribrach fixing lever Alignment piece Tribrach alignment groove Detachment 1) Loosen the tribrach fixing screw. 2) Loosen the tribrach fixing lever by turning counterclockwise. 3) Lift the instrument straight upwards and off. Attachment 1) Coincide the white alignment piece on the lower part of the instrument with the tribrach alignment groove.

  • Page 126: Battery System

    BATTERY SYSTEM In case of Rechargeable Battery BT-56Q BT-56Q Charging BT-56Q Approx.15h BT-3Q Approx.2h Approx.15h BT-3L In case of External battery Pack PC-5 or PC-6 Charging time BC-27BR/CR Approx. 2.5h BC-10C Approx.1h BC-5 BC-9 BC-6 15-1 15 BATTERY SYSTEM BT-3Q PC-5 BT-3L PC-6...

  • Page 127: Prism System

    PRISM SYSTEM Arrangement according to your needs is possible. Tilting prism holder-2 with target plate-2 Pole adaptor- A Pole adaptor- F2 It is possible to change the combination according purpose. Tilt single prism unit Fixed 3 prisms unit Tripod Use the above prisms after setting them at the same height as the instruments. To adjust the height of prism set, change the position of fixing screws.

  • Page 128: Precautions

    11) Even if any abnormality occurs, never attempt to disassemble or lubricate the instrument yourself. Always consult with TOPCON or your dealer. 12) To remove the dust on the case, never use thinner or benzine. Use a clean cloth moistened with neutral detergent.

  • Page 129: Error Displays

    Abnormality in angle measuring system. E800‘s In the self checking mode, vibration is too big. Get rid of the Vibration If error still persist after attempting to clear them, contact your local Topcon dealer or Topcon head office. Description Contact your dealer or Topcon.

  • Page 130: Special Accessories

    A reticle designed for collimation of the sun. Can be used together with Solar Filter. 19 SPECIAL ACCESSORIES Optical plummet tribrach TR-5P This is detachable tribrach having built-in optical plummet telescope. (Compatible with Wild) Tribrach TR-5 This is detachable tribrach having tribrach fixing screw.
  • Page 131 Prism unit case, Model 6 Fixed 9 prisms unit or tilting 3 prisms unit can be stored in this case. Especially, this is a very easy case to carry. Soft material is used. External dimensions: 250(L) 120(W) 400(H) mm Weight:0.5kg Prism unit case, Model 5 1 prisms unit or fixed 3 prisms unit can be stored in this case.
  • Page 132 256 K bytes Approx. 4,000 points 512 K bytes Approx. 8,000 points 19 SPECIAL ACCESSORIES Power cord PC-5 (For BT-3Q, AC-6 and TOPCON FC series Data collector) L-shape plug provided Cord length: 2m approx. Auto Converter AC-6 Input voltage : DC12V Output voltage : DC 8.4V...

  • Page 133: Specifications

    SPECIFICATIONS Telescope Length Objective lens Magnification Image Field of view Resolving power Minimum focus Focusing knob Automatic Tracking / Collimating Maximum Automatic Tracking speed Automatic Collimating area Automatic Tracking range *1: Prism type 2, with 1 prism Prism Unit Type A2/A3/A3S...
  • Page 134 Distance measurement Measurement range Prism Condition 1 Mini prism 800m ( 2,600ft) 1 prism 2,200m (7,200ft) 3 prisms 2,800m (9,200ft) 9 prisms 3,600m (11,800ft) Condition 1: Sight haze with visibility about 20km (12.5miles) moderate sunlight with light heat shimmer. Condition 2: No haze with visibility about 40km(25 miles), overcast with no heat shimmer. Measurement accuracy Fine measurement mode Coarse measurement mode...
  • Page 135 : Automatic vertical and Horizontal index : Liquid type : ±4' : 1"(0.1mgon) : 196mm (7.7 in) Base unit detachable (Height from the tribrach dish to the center of telescope) : 10'/2mm : 30"/2 mm : 0.5m to infinity : Erect : 4°...
  • Page 136 Rechargeable Battery BT-56Q (This battery does not contain mercury) Out put voltage Capacity Maximum operating time( when fully recharged) at +20°C (+68°F) Normal use Distance and Angle measurement Weight Battery Charger BC-27BR / BC-27CR Input voltage Frequency Recharging time (at +20°C /+68°F) Rechargeable battery BT-56Q Discharging time (at +20°C /+68°F) Rechargeable battery BT-56Q...

  • Page 137: Appendix

    APPENDIX Dual Axis Compensation Inclination of the vertical axis with respect to true vertical will result in incorrectly measured horizontal angles. The extent of the error in horizontal angle measurement due to axis tilt depends on three factors : the amount of the tilt of axis the elevation of the target the horizontal angle between the direction of tilt of the vertical axis and the target.
  • Page 138 APPENDIX It is clear from the table that dual axis compensation has the most benefit when the elevation of the target is greater then 30° and the axis is tilted more than 10". The entries indicated in bold in the table show, in fact, that for many common surveying applications i.e. target elevation <30°...

  • Page 139: Precaution When Charging Or Storing Batteries

    Precaution when Charging or Storing Batteries The capacity of battery will be affected and its service life shortened in any of the following cases while it is recharged, discharged or stored. 1) Recharging Fig. 1 shows how ambient temperature at recharging is related to charging efficiency or as affecting discharge capacity.
  • Page 140 Discharge : 0.2, E.V.= Temperature at discharge : 20 Ambient temperature when charging i Fig.1 Recharging 0.2C discharge 1C discharge Charging : 0.1C ~16hours Charging temperature : 20 Ambient temperature i Fig. 2 Discharge Storing period (month) Fig. 3 Storage APPENDIX-4 APPENDIX 0.1C charge...

  • Page 141: End User License Agreement

    END USER LICENSE AGREEMENT IMPORTANT-- READ CAREFULLY BEFORE USING THE EMBEDDED SYSTEM WHICH CONTAINS MI- CROSOFT SOFTWARE. By using the embedded system containing software, you indicate your acceptance of the following Software License Agreement. SOFTWARE LICENSE AGREEMENT (Embedded Products) This software license agreement, including the Warranty and Special Provisions set forth in the appendix or sep- arate booklet included in this package, is a legal agreement between you (either an individual or an entity, here- inafter "End User") and the manufacturer ("Embedded System Manufacturer") of the embedded system containing software product.

  • Page 142: Emc Notice

    EMC NOTICE In industrial locations or in proximity to industrial power installations, this instrument might be affected by electromagnetic noise. Under such conditions, please test the instrument performance befor use. This is a CLASS A product. Ina domestic environment this product may cause radio interference in which case the user may be required to take adequate measures.
  • Page 144 Phone: 93-473-4057 Fax: 93-473-3932 www.topconesp.com TOPCON SCANDINAVIA A. B. ölndal, SWEDEN Phone: 031-7109200 Fax: 031-7109249 TOPCON (GREATBRITAIN) LTD. Topcon House Kennet Side, Bone Lane, Newbury, Berkshire RG14 5PX U.K. Phone: 44-1635-551120 Fax: 44-1635-551170 survey.sales@topcon.co.uk laser.sales@topcon.co.uk AUTO TRACKING TOTAL STATION GTS-820A TOPCON SOUTH ASIA PTE.

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