Topcon GPT-7500 Series Instruction Manual
  1. Manuals
  2. Brands
  3. Topcon Manuals
  4. Measuring Instruments
  5. GPT-7500 Series
  6. Instruction manual

Topcon GPT-7500 Series Instruction Manual

Electronic total station
Hide thumbs
Table of Contents

Advertisement

Quick Links

INSTRUCTION MANUAL
ELECTRONIC TOTAL STATION
GTS-750
SERIES
GTS-751
GTS-752
GTS-753
GTS-755
PULSE TOTAL STATION
GPT-7500
SERIES
GPT-7501
GPT-7502
GPT-7503
GPT-7505
Rev.6

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the GPT-7500 Series and is the answer not in the manual?

Questions and answers

Related Manuals for Topcon GPT-7500 Series

Summary of Contents for Topcon GPT-7500 Series

  • Page 1 INSTRUCTION MANUAL ELECTRONIC TOTAL STATION GTS-750 SERIES GTS-751 GTS-752 GTS-753 GTS-755 PULSE TOTAL STATION GPT-7500 SERIES GPT-7501 GPT-7502 GPT-7503 GPT-7505 Rev.6...

  • Page 3: Foreword

    FOREWORD Thank you for purchasing the TOPCON Total Station GTS-750/GPT-7500 series. For the best performance of the instruments, please carefully read these instruc- tions and keep them in a convenient location for future reference.

  • Page 4: General Handling Precautions

    Connect the battery as soon as possible or execute RAM back-up. No responsibility TOPCON Corporation has no responsibility for loss of data stored in the memory in case unexpected accidents. Battery cover Completely close the battery cover before using the GTS-750/GPT-7500.If the battery cover is not...

  • 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

    CAUTION •Do not connect or disconnect equipment with wet hands, you are at risk of electric shocks if you •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.

  • Page 7: Laser Safety

    Publication 825) provided on the safety standard for laser beam. As per the said standard, the GPT-7500 series is classified as "Class 1 (l) Laser Products". In case of any failure, do not disassemble the instrument. Contact TOPCON or your TOPCON dealer. •...

  • Page 8: Symbol Mark While The Laser Is Emitting

    Symbol Mark while the Laser is Emitting. These symbol marks will come on while the laser is working When distance is being measured Class 1 (CLASS I) Laser) When the Laser Pointer light is ON (Class 2 (CLASSI I) Laser)

  • Page 9: Table Of Contents

    Contents FOREWORD........... 1 General Handling Precautions.
  • Page 10 3.2.1 Setting of the Atmospheric Correction........58 3.2.2 Setting of the Correction for Prism Constant .
  • Page 11 16 MESSAGE/ERROR DISPLAYS ........121 16.1 Message .

  • Page 12: Nomenclature And Functions

    1 NOMENCLATURE AND FUNCTIONS NOMENCLATURE AND FUNCTIONS 1.1 Nomenclature The GTS-755 and GPT-7505 are one-display models. Sighting collimator Carrying handle Handle fixing screw Point guide Instrument center mark Objective lens Card cover Laser pointer Only for GPT-7500 Hardware reset switch (Inside the cover) Laser aperture Card cover lever...
  • Page 13 1 NOMENCLATURE AND FUNCTIONS Vertical motion clamp *1) Vertical tangent screw Telescope focusing knob 2speed way: GPT-7501/7502/7503 GTS-751/752/753 Telescope grip 1speed way: GPT-7505 GTS-755 Telescope eyepiece Instrument height mark Power switch Plate level Horizontal tangent screw Display window (With touch panel) 2speed way: GPT-7501/7502/7503 GTS-751/752/753...

  • Page 14: Display

    1 NOMENCLATURE AND FUNCTIONS 1.2 Display 1.2.1 Main Menu Contains The main menu contains as following items. Select the menu by pressing icons. Display icon PROGRAM MODE • Setting a direction angle for backsight orientation • Remote elevation measurement • Missing line measurement •...

  • Page 15: Measurement Menu

    1 NOMENCLATURE AND FUNCTIONS 1.2.2 Measurement Menu Example:Distance Mode V-angle: 50°10’30” H-angle: 20°30’40” Horizontal distance: 1.877m Relative elevation : 1.565m Soft keys 1.2.3 Display Marks Display Contents Display Contents V-angle Meter unit Percent grade Feet unit H-angle right Fine mode H-angle left Coarse mode Horizontal distance...

  • Page 16: Display Keys

    1 NOMENCLATURE AND FUNCTIONS 1.2.4 Display keys Keys Name of Key Function F1~F4 Soft key Functions are according to the displayed message. Escape key Returning to the previous mode or display. Angle To be angle measuring mode. measuring key Distance To be distance measuring mode.

  • Page 17: Backlight, Key Light Adjustment

    1 NOMENCLATURE AND FUNCTIONS 1.3 Backlight, Key Light Adjustment 1.3.1 How to Adjust Reducing Time of Backlight To conserve battery power, this instrument would automatically turn the backlight off or reduce the backlight brightness by itself when it’s not in use. In addition, the instrument can control the backlight brightness automatically by an equipped illuminometer.
  • Page 18 1 NOMENCLATURE AND FUNCTIONS Press the time-menu down arrow to select the reducing time. Factory setting is ‘3 minutes' as default. Press the [OK] key on title bar. After that "Power Properties" screen will close automatically.

  • Page 19: Adjust The Backlight Brightness By Manual

    1 NOMENCLATURE AND FUNCTIONS 1.3.2 Adjust the Backlight Brightness by Manual On the "Backlight" screen, please check it 'OFF' "An illuminometer is used.”. (Factory setting is 'ON' as default) The "Brightness adjusting slide bar” will be appeared on Display. Adjust the brightness by pressing [UP-DOWN] button. Press the [OK] key on title bar.

  • Page 20: Selecting The Automatic Lighting Option

    1 NOMENCLATURE AND FUNCTIONS 1.3.3 Selecting the Automatic Lighting Option On the "Backlight" screen, select a Radio button from “Automatic lighting” column. (Factory setting is “The light is switched on with an illuminometer.” as default) Press the [OK] key on title bar. After that "Power Properties" screen will close automatically. •...

  • Page 21: Selecting The Key Light Option

    1 NOMENCLATURE AND FUNCTIONS 1.3.4 Selecting the Key Light Option The Key Light option: [Key light is always off, Key light is always on, Key light synchronizes with backlight] Press the tab [Key Light]. You can see the "Key Light" screen on Display. Select a Radio button.

  • Page 22: Ram Data Backup

    1 NOMENCLATURE AND FUNCTIONS 1.4 RAM Data Backup If your device had not recharged during several days, the battery will be running down, and you would lose all of data on the device other than that in the "Internal Disk (internal SD card)". In addition, you might perform hardwarereset by the hardware problem or software problem.
  • Page 23 1 NOMENCLATURE AND FUNCTIONS Press the [YES] key. Backup function will start. Return to "RAM Backup" screen automatically, when the data back up has been completed. Press the [OK] key on title bar. After that "RAM Backup" screen will close automatically. •...

  • Page 24: Set The Automatic Backup For Every Suspension

    1 NOMENCLATURE AND FUNCTIONS 1.4.2 Set the Automatic Backup for Every Suspension On the "RAM Backup" Screen, please check it 'ON' the "RAM data will be backed up before suspension.". (Factory setting is 'ON' as default) Press the [OK] key on title bar. After that, "RAM Backup" screen will close automatically. 1.4.3 Set the Restoration Disabled after Hardware Reset On the "RAM Backup"...

  • Page 25: Hardware Reset

    1 NOMENCLATURE AND FUNCTIONS 1.5 Hardware Reset If your instrument not responding or an application hangs, please try to perform a software reset first. Still, when useless, please perform hardware reset. You will lose all of data on the device other than that in the "Internal Disk" after hardware reset and will need to reinstall the applications and the data you install on your instrument.

  • Page 26: Touch Panel Calibration

    1 NOMENCLATURE AND FUNCTIONS 1.7 Touch Panel Calibration If your instrument is not responding properly to your taps, you may need to calibrate the touch panel. • How to calibrate the touch panel Press the icon [Start]-[Settings]-[Control Panel]- [Stylus]. You can see the "Stylus Properties" screen on Display.
  • Page 27 1 NOMENCLATURE AND FUNCTIONS Using the stylus pen, press the center of the targets on the screen. After pressing all targets (5 points), press the [ENT] key, or tap the display. Press the [OK] key. The display returns to previous menu.

  • Page 28: Operating Panel Key

    1 NOMENCLATURE AND FUNCTIONS 1.8 Operating Panel Key To operate the keys on the screen, touch them lightly with either the accessory stylus pen or your finger. Use either the stylus pen or your finger. Do not use a ballpoint pen or a pencil. 1.8.1 Operating Key Microphone Light sensor...

  • Page 29: Turning Off The Touch Panel Function

    1 NOMENCLATURE AND FUNCTIONS 1.8.2 Turning OFF the Touch Panel Function To wipe away tarnish and dirt on the touch panel while the power is turned ON, you can shut down the touch panel function according to the following directions. •...

  • Page 30: Function Key (Soft Key)

    1 NOMENCLATURE AND FUNCTIONS 1.10 Function Key (Soft Key) The functions are according to the displayed message. Angle measuring mode (Page 1) Angle measuring mode (Page 2) Angle measuring mode (Page 3) Distance measuring mode (Page 1) Distance measuring mode (Page 2) Coordinate measuring mode (Page 2) Coordinate measuring mode (Page 1)
  • Page 31 1 NOMENCLATURE AND FUNCTIONS Angle measuring mode Soft Page Display Function 0SET Angle of horizontal is set to 0° 00'00". HOLD Holds the horizontal angle. HSET Sets the horizontal angle by input value. The function of soft keys on next page (P2). Sets the tilt function, ON/OFF.

  • Page 32: Star Key Mode

    1 NOMENCLATURE AND FUNCTIONS 1.11 Star Key Mode Press the star( ) key to view the instrument options. The following instrument options can be selected from the star key: Reticle illumination icon Point guide icon Signal level icon Electric circular level icon Prism / Non-prism / Non-prism long switching icon Laser pointer icon (Only for GPT-7500)
  • Page 33 1 NOMENCLATURE AND FUNCTIONS • Point guide ON/OFF This feature is most useful when doing stake out work. The Point Guide's red LEDs on the GTS-750/GPT-7500 Series telescope assist the rod person in getting on-line. The Point Guide feature is fast and simple to use. Instrument The Point Guide should be used within a distance of 100 meters (328 ft.).
  • Page 34 1 NOMENCLATURE AND FUNCTIONS • Signal level mode The light acceptance quantity level (Signal level) is displayed in this mode. When reflected light from the prism is received, a buzzer sounds. This function is good for easy collimation when the target is difficult to find. The received return signal level is displayed with bar graph as follows.
  • Page 35 1 NOMENCLATURE AND FUNCTIONS • Laser Pointer ON/ON(blink)/OFF (GPT-7500) The laser pointer assists with collimation by radiating visible laser light from the objective lens to the target. The laser pointer can be used for the Prism, Non-prism and Non-prism long mode. Laser aperture •...

  • Page 36: Switching Measurement Distance Modes

    1 NOMENCLATURE AND FUNCTIONS 1.11.1 Switching Measurement Distance Modes Pressing the [Prism / Non-prism / Non-prism long switching] icon displays the following screen. Each mode can be switched by using the buttons as shown below. • Setting Measurement distance range of ‘Non-prism long mode’ It is possible to measure long distance in the Non-prism Long mode.

  • Page 37: Setting By Using Star Key

    1 NOMENCLATURE AND FUNCTIONS 1.11.2 Setting by Using Star Key [Example] : Switch on the laser pointer Turn the power switch on. Press the [ ] key. Press the [Laser pointer] icon. The laser pointer will be turned on.

  • Page 38: Auto Power Off

    1 NOMENCLATURE AND FUNCTIONS 1.12 Auto Power Off To save battery power, the GTS-750/GPT-7500 would automatically turn the power off (suspend) by itself when it’s not in use. You can adjust the settings of this function. • How to adjust the settings of auto power off function Press the icon [Start]-[Settings]- [Control Panel]-[Power].
  • Page 39 1 NOMENCLATURE AND FUNCTIONS Press the [OK] key on title bar. After that "Power Properties" screen will close automatically. While on external power, the auto power off function can be enabled too. To set this function, please check it 'ON' the "Enable suspend while on external power” on the "Power Off "...

  • Page 40: Using The Usb Port

    1 NOMENCLATURE AND FUNCTIONS 1.13 Using the USB Port Type miniB(Active Sync) Type A (USB Memory) • Using ActiveSync For Type mini B, refer to Chapter 2.9 “Active Sync”. • Using a USB memory Open the USB Port cover. Insert a USB memory into the Type A side. Confirm that the USB memory has been recognized.

  • Page 41: Preparation For Measurement

    2 PREPARATION FOR MEASUREMENT PREPARATION FOR MEASUREMENT 2.1 Power Connection Obtain power from BT-65Q battery or an external battery. • When using the BT-65Q, leave the power of the instrument switched ON. • When using an external battery, leave the BT-65Q battery mounted onto the instrument. External battery •...

  • Page 42: 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 43: Power Switch Key On

    2 PREPARATION FOR MEASUREMENT 2.3 Power Switch Key ON Confirm the instrument is leveled. Turn the power switch ON. Progress bar will be displayed during reloading the Operating System, after you turn the instrument on at the first time or perform hardware reset.

  • Page 44: Battery Power Remaining Display

    2 PREPARATION FOR MEASUREMENT 2.4 Battery Power Remaining Display Battery power remaining display indicates the power condition. Battery Power Remaining Display Measurement is possible. The power is poor. The battery should be recharged or replaced with a fully charged battery. Measurement is impossible -- need to recharge or replaces the battery.

  • Page 45: Vertical And Horizontal Angle Tilt Correction

    2 PREPARATION FOR MEASUREMENT 2.5 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 46: Setting Tilt Correction By Soft Key

    2 PREPARATION FOR MEASUREMENT 2.5.1 Setting Tilt Correction by Soft Key [Example] Setting Tilt OFF Press the [F4] key to get the function page 2. Press the [F1] key. Current setting is displayed. Press [OFF] key. Press [EXIT] key. The display returns previous mode. •...

  • Page 47: Compensation Of Systematic Error Of Instrument

    2 PREPARATION FOR MEASUREMENT 2.6 Compensation of Systematic Error of Instrument 1) Error of vertical axis (X,Y tilt sensor offset) 2) Collimation error 3) Error of vertical angle 0 datum 4) Error of horizontal axis The above mentioned errors can be compensated by software, which calculated internally according to each compensation value.

  • Page 48: How To Enter Numerals And Alphabet Letters

    2 PREPARATION FOR MEASUREMENT 2.7 How to Enter Numerals and Alphabet Letters This instrument supports two ways to enter numerals and alphabet letters. One is by physical(hardware) keyboard that is similar to cellular phone method. Three alphabet characters are assigned to one numeral key. The other is by using the software input panel.
  • Page 49 2 PREPARATION FOR MEASUREMENT Press the [ ] key to be entering alphabet letter mode. Alphabet letter mode indicator will be appeared on the task bar. Alphabet letter mode indicator Enter Alphabets. Input 'j', Press [4](JKL)key, then the sub window featuring 'j' character will appear on the display which indicate a entering character.
  • Page 50 2 PREPARATION FOR MEASUREMENT Press the [ ] key to be returning numeric mode. Alphabet letter mode indicator will be disappeared on the task bar. Input ‘104’, Press [1], [0], [4]. Then ‘104’ will be appended after ‘job_’. Press the [ENT] key. In alphabet letter mode, [Shift] + [0-9,.-] keys perform uppercase character.
  • Page 51 2 PREPARATION FOR MEASUREMENT • Invoke the software input panel. Press the [ ] key or press keyboard icon on the task bar and select “Keyboard” You can see the software input panel on display. You can input data as if you were typing on your PC keyboard.

  • Page 52: Data Memory Card

    2 PREPARATION FOR MEASUREMENT 2.8 Data Memory Card How to insert a data memory card(CF card) • Card cover Card guide Data memory Card cover card lever Push up the card cover lever to open the card cover. Insert a data memory card. Please make sure you have the front and back of the CF cards facing correctly when inserting into the card slot.

  • Page 53: Active Sync

    2 PREPARATION FOR MEASUREMENT 2.9 Active Sync Microsoft ActiveSync is the data synchronization software: It synchronizes data between Windows CE devices (such as the GTS-750/GPT-7500) and PCs. Using ActiveSync, the GTS-750/GPT-7500 can exchange data to a PC via USB cable. To establish a connection between the instrument and your PC, you first need to install ActiveSync in your PC.

  • Page 54: Standard Measurement Mode

    3 STANDARD MEASUREMENT MODE STANDARD MEASUREMENT MODE STANDARD MEASUREMENT MODE Angle measurement, Distance measurement, Coordinate measurement . Press the [MEAS] icon. 3.1 Angle Measurement 3.1.1 Measuring Horizontal Angle Right and Vertical Angle Make sure the mode is in angle measurement Collimate the 1st target (A).

  • Page 55: Switching Horizontal Angle Right/Left

    3 STANDARD MEASUREMENT MODE 3.1.2 Switching Horizontal Angle Right/Left Make sure the mode is angle measurement. Press the [F4] key to get the function as on page 2. Press the [F3] key. The mode Horizontal angle Right(HR) switches to angle Left(HL) mode. Measure the target in the same manner as HR mode.

  • Page 56: Measuring From The Required Horizontal Angle

    3 STANDARD MEASUREMENT MODE 3.1.3 Measuring from the Required Horizontal Angle 1) Setting by Holding the Angle Make sure the mode is angle measurement. Set the required horizontal angle, using Horizontal tangent screw. Example : 90°20'30" Press the [F2] (HOLD) key. Collimate the target.*1) Press the [YES] key to finish holding the horizontal angle.

  • Page 57: Vertical Angle Percent Grade(%) Mode

    3 STANDARD MEASUREMENT MODE 3.1.4 Vertical Angle Percent Grade(%) Mode Make sure the mode is angle measurement. Press the [F4] key to get the function as on page 2. Press the [F2] key. *1) *1) Every time pressing the [F2] key, the display mode switches.

  • Page 58: Distance Measurement

    3 STANDARD MEASUREMENT MODE 3.2 Distance Measurement Note: Those distance shorter than 1m and 400m or more will not be displayed in Non-prism mode. Those distance shorter than 4.5m and 2010m or more will not be displayed in Non- prism long mode. •...
  • Page 59 3 STANDARD MEASUREMENT MODE • Precautions for Use of Non-prism long mode GPT-7500 series made non-prism measurement possible to reach the distance that had never been achieved before. In the non-prism long mode, the following attentions need to be paid because the farther the target object be, the weaker the reflection from the target and the larger the beam diameter become.

  • Page 60: Setting Of The Atmospheric Correction

    3 STANDARD MEASUREMENT MODE 3.2.1 Setting of the Atmospheric Correction When setting the atmospheric correction, obtain the correction value by measuring the temperature and pressure. Setting the atmospheric correction, see Chapter 8 “SETTING ATMOSPHERIC CORRECTION” . 3.2.2 Setting of the Correction for Prism Constant Topcoat’s prism constant value is 0.
  • Page 61 3 STANDARD MEASUREMENT MODE Input the distance range by pressing the numeric key. *1) Example:10m Press the [ENTER] key. [ENTER] key The display returns to the star key mode. *1) Input range: 5 m ~ 1,800 m (17 ft. ~ 5,900 ft.)

  • Page 62: Distance Measurement (Continuous Measurement)

    3 STANDARD MEASUREMENT MODE 3.2.4 Distance Measurement (Continuous Measurement) Make sure the mode displays angle measurement Collimate the center of prism. Press the [ ] key. *1),*2) [Example]: Horizontal distance / Relative elevation mode The result are shown.*3) ~ *7) *1)The following characters will be shown on the 4th line right hand of the display to represent measurement mode.

  • Page 63: Distance Measurement (Single/N-Times Measurement)

    3 STANDARD MEASUREMENT MODE 3.2.5 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 or 0, it does not display the average distance, because of single measurement.

  • Page 64: Fine / Coarse / Tracking Measuring Mode

    3 STANDARD MEASUREMENT MODE 3.2.6 Fine / Coarse / Tracking Measuring Mode GTS-750 •Fine mode : This is a normal distance measuring mode. Measurement time 0.2mm mode : approx.2.8 seconds 1 mm mode : approx.1.2 seconds 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.
  • Page 65 3 STANDARD MEASUREMENT MODE Non Prism Long Mode : This is a normal distance measuring mode. •Fine mode Measurement time : approx. 1.5~6 seconds The unit to be displayed is 1mm. (0.005ft) • : This mode measures in shorter time than in fine mode. Coarse mode Use this mode for the objects which may be slightly unstable.

  • Page 66: Stake Out (S.o)

    3 STANDARD MEASUREMENT MODE • To select distance measurement mode Confirm the distance measurement mode Collimate the center of prism. Press the [F2] key. The first letter of the current mode is displayed.*1) Select the measurement mode by pressing the [F1], [F2] or [F3] key.
  • Page 67 3 STANDARD MEASUREMENT MODE [Example : Horizontal distance] Press the [F4] key in the distance measurement mode to get the function as in page 2. Press the [F1] key . The current setting value is displayed. With the [HD] - [SD] keys, select a mode for inputting the standard distance.

  • Page 68: Coordinate Measurement

    3 STANDARD MEASUREMENT MODE 3.3 Coordinate Measurement 3.3.1 Setting Coordinate Values of Occupied Point Set the coordinates of instrument (occupied point) according to coordinate origin, and the instrument automatically converts and displays the unknown point (reflector point) coordinates following the origin. Reflector (n,e,z) Inst.Point C Origin(0,0,0)
  • Page 69 3 STANDARD MEASUREMENT MODE Press the [N] key. Input the N coord. Press the [SET] key.*1) Press the [E] key. Input the E coord. Press the [SET] key.*1) Press the [Z] key. Input the Z coord. Press the [SET] key.*1) Press the [EXIT] key.

  • Page 70: Setting Of The Instrument Height / Reflector(Prism) Height

    3 STANDARD MEASUREMENT MODE 3.3.2 Setting of the Instrument Height / Reflector(Prism) Height Measure the coordinates by entering the instrument height / reflector height, coordinates of unknown point will be measured directly. [Example] : Instrument height Confirm the angle measurement mode. Press the [ ] key.

  • Page 71: Execution Of Coordinate Measuring

    3 STANDARD MEASUREMENT MODE 3.3.3 Execution of Coordinate Measuring Measure the coordinates by entering the instrument height and reflector height, coordinates of unknown point will be measured directly. • When setting coordinate values of occupied point, see section 3.3.1“Setting Coordinate Values of Occupied Point”...

  • Page 72: Data Output

    3 STANDARD MEASUREMENT MODE 3.4 Data Output Result of measurement is transferred from the GTS-750/GPT-7500 series to Data Collector. [Example: Distance measurement mode] With the SETUP mode, set the communication parameters. Refer to Chapter 5 “PARAMETERS SETTING MODE” . After setting the communication parameters, select the distance measurement mode.

  • Page 73: Data Output By [Rec] Key

    3 STANDARD MEASUREMENT MODE 3.5 Data Output by [REC] Key It is also possible to output the result of measurement by pressing the [REC] key . [Example: Distance measurement mode] With the SETUP mode, set the communication parameters. Refer to Chapter 5 “PARAMETERS SETTING MODE”...

  • Page 74: Program Mode

    4 PROGRAM MODE PROGRAM MODE Select the menu by pressing panel icon. Main menu Press the [PROG] icon. Program mode menu Repetition angle measurement Refer to Chapter 4.4 “Repetition Angle Measurement (REP)” . Missing line measurement Refer to Chapter 4.3 “Missing Line Measurement (MLM)” . Remote elevation measurement Refer to Chapter 4.2 “Remote Elevation Measurement (REM)”...

  • Page 75: Setting A Direction Angle For Backsight Orientation(Bs)

    4 PROGRAM MODE 4.1 Setting a Direction Angle for Backsight Orientation(BS) (Entering the instrument and backsight coordinate values) This program uses the input coordinate values of the occupied point, (instrument), and backsight point to calculate the backsight orientation direction angle. The occupied and backsight coordinate input display appears.
  • Page 76 4 PROGRAM MODE Input N and E coordinate of occupied point C. Example : N coordinate; 5.321m : E coordinate; 8.345m Input N and E coordinate of backsight point A. Example : N coordinate; 54.321m : E coordinate; 12.345m To memorize the occupied point, press the [SET OCC] key.

  • Page 77: Remote Elevation Measurement (Rem)

    4 PROGRAM MODE 4.2 Remote Elevation Measurement (REM) The Remote Elevation program calculates the vertical distance (height) of a remote object relative to a prism and it's height from a ground point, (without a prism height). When using a prism height, the remote elevation measurement will start from the prism (reference point).
  • Page 78 4 PROGRAM MODE Press the [YES] key. Collimate prism. Press the [Meas Prism] key. Press the [SET] key. (To measure the distance again, press the [RE-TRY] key.) Collimate target K. Vertical angle(VA) and Vertical distance(VD) will be shown.
  • Page 79 4 PROGRAM MODE 2)Without prism height input Press the [REM] icon. Select the [NO] button. Collimate prism. Press the [Meas Prism] key. Press the [SET] key. Collimate ground point G. Press the [Meas Ground] key. Press the [SET] key. Collimate target K. Vertical angle(VA) and Vertical distance(VD) will be shown.

  • Page 80: Missing Line Measurement (Mlm)

    4 PROGRAM MODE 4.3 Missing Line Measurement (MLM) The Missing Line Measurement program calculates the horizontal distance (dHD), slope distance (dSD) and elevation (dVD) between two target prisms. The instruemt can accomplish this in two ways: MLM Method (A-B, A-C): Measurement is A-B, A-C, A-D, ..MLM Method (A-B, B-C): Measurement is A-B, B-C, C-D, ..
  • Page 81 4 PROGRAM MODE Collimate prism B, and press the [MEAS] key. Horizontal distance between the instrument and prism B will be shown. And then, the horizontal distance (dHD), relative elevation (dVD) and slope distance (dSD) between prism A and B will be shown. To measure the distance between points A and C, repeat procedure •...

  • Page 82: Repetition Angle Measurement (Rep)

    4 PROGRAM MODE 4.4 Repetition Angle Measurement (REP) Repetition Angle Measurement program calculates horizontal angles and shows the total angle (Ht) and the mean (Hm) of all the angles measured. The program also keeps track of the amount of complete sets of horizontal angles measured. Repetition Angle Measurement program can be done by horizontal angle right measurement mode.
  • Page 83 4 PROGRAM MODE The total of angle and the mean of angle are shown. Repeat procedure to measure the desired number of repetitions. • Horizontal angle can be accumulated up to 99 times. • To clear all data, press the [RESET] key.

  • Page 84: Parameters Setting Mode

    5 PARAMETERS SETTING MODE PARAMETERS SETTING MODE PARAMETERS SETTING MODE In this mode, setting of parameters regard with measuring and communications will be done. When a parameter is changed and set, the new value is stored into the memory.

  • Page 85: Parameter Setting Options

    5 PARAMETERS SETTING MODE 5.1 Parameter Setting Options 5.1.1 Measurement Menu Selecting Item Contents MEASUREMENT 1 MINI ANG READING NORM / MINI Select the minimum display angle reading unit. FINE READING 1mm / 0.2mm Select 1mm/0.2mm for the minimum distance in fine mode. TILT OFF/X-ON/XY-ON Select the tilt sensor option for OFF, X-ON, XY-ON.

  • Page 86: Communication

    5 PARAMETERS SETTING MODE 5.1.2 Communication Factory default settings are indicated with underlines. Menu Selecting Item Contents COMMON PARAMETER RECKey Data Out RS232C Select communication route for REC key data output. Select to record coordinates in standard or 11 digits with raw STANDARD/WITH NEZ REC FORM data.

  • Page 87: Setting Parameters

    5 PARAMETERS SETTING MODE 5.2 Setting Parameters [Example setting] S/A BUZZER: OFF Press the [SETUP] icon. Press the [MEASUREMENT] key. Press the [MEASUREMENT1] key. Press the [NEXT] key three times. Select the [OFF] button of S/A BUZZER.*1) When the [SET] key is pressed, the setting will be set and the SETUP MODE screen will reappear.

  • Page 88: Check And Adjustment

    If the difference of the prism mode and non-prism mode is the range of ±10mm even one time, the instrument is normal. If the difference is never the range of ±10mm, contact TOPCON or your TOPCON dealer. Non-prism long mode 1) Set a prism 30 to 50 meter apart from the instrument and measure the distance to the prism by prism mode.

  • Page 89: Checking The Optical Axis

    If displacement is more than one-fifth in the above case, and still remains so after rechecking the original line of sight, the instrument must be adjusted by competent technicians. Please contact TOPCON or your TOPCON dealer to adjust the instrument. Red light spot...
  • Page 90 6 CHECK AND ADJUSTMENT GPT-7500 Check each of the optical axis of EDM and theodolite about prism mode and non-prism mode in order. (In non-prism long mode: Check the same way in non-prism mode.) 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.
  • Page 91 6 CHECK AND ADJUSTMENT • H direction confirmation (Do not move V direction). Turn the horizontal tangent screw, move the collimating point to the left side of prism gradually until buzzer sound stops. Prism Reticle Turn the horizontal tangent screw slowly, and move the collimating point to the prism center gradually until at the position buzzer starts.
  • Page 92 90°08'30" Reading to prism center 90°08'50" Difference 20" If the difference is more than mentioned value, contact with your Topcon dealer or Topcon. • For non-prism mode If the instrument is in the hold mode, press the [HOLD] key to release the hold mode.
  • Page 93 Repeat the previous procedure 6 to 14 in the same way in the non-prism mode. If the difference is within 2', no problem for use. If the difference is more than mentioned value, contact with your Topcon dealer or Topcon.

  • Page 94: Checking The Optical Axis Of Laser Pointer

    6 CHECK AND ADJUSTMENT 6.2.2 Checking the optical axis of Laser pointer (Only for GPT-7500) Check whether the optical axis of the laser pointer coincides with the optical axis of the telescope by carrying out the following steps. The laser pointer indicates the approximate collimation position of the telescope. It does not indicate the exact collimation position.
  • Page 95 6 CHECK AND ADJUSTMENT About30 ° The direction of the laser pointer About30 ° As seen from above Adjustment screws When screws A, B and C are turned clockwise (the direction for tightening them), the laser pointer, as seen on the target from the standpoint of the GPT-7500, will move in the direction shown in the drawing. •...

  • Page 96: Checking/Adjusting The Theodolite Functions

    6 CHECK AND ADJUSTMENT 6.3 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 97: Checking /Adjusting The Plate Level

    6 CHECK AND ADJUSTMENT 6.3.1 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 98: Adjustment Of The Vertical Cross-Hair

    6 CHECK AND ADJUSTMENT 6.3.3 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 running lines).

  • Page 99: Collimation Of The Instrument

    6 CHECK AND ADJUSTMENT 6.3.4 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. •...

  • Page 100: Checking / Adjusting The Optical Plummet Telescope

    6 CHECK AND ADJUSTMENT First, loosen the capstan adjustment screw on the side to which the vertical cross-hair line must be moved. Then tighten the adjustment screw on the opposite side by an equal amount which will leave the tension of the adjustment screws unchanged. Revolve in the counterclockwise direction to loosen and in the clockwise direction to tighten, but revolve as little as possible.

  • Page 101: Adjustment Of Vertical Angle 0 Datum

    6 CHECK AND ADJUSTMENT 6.3.6 Adjustment of Vertical Angle 0 Datum If when measuring the vertical angle of target A at telescope position normal (direct) and reverse settings, the amount of normal and reverse measurements combined is other than 360° (ZENITH-0), half of the difference from 360°...

  • Page 102: How To Set The Instrument Constant Value

    6 CHECK AND ADJUSTMENT 6.4 How to Set the Instrument Constant Value To set the Instrument constant which is obtained in section 6.1“Checking and Adjusting of Instrument Constant” , follow as below. Press the [ADJUST] icon from the main menu. Press the [INST.

  • Page 103: Compensation Systematic Error Of Instrument

    6 CHECK AND ADJUSTMENT 6.5 Compensation Systematic Error of Instrument 6.5.1 Adjustment of Compensation Systematic Error of Instrument 1) Error of vertical axis (X,Y tilt sensor offset) 2) Collimation error 3) Error of vertical angle 0 datum 4) Error of horizontal axis The above mentioned errors will be compensated by software, which calculated internally according to each compensation value.
  • Page 104 6 CHECK AND ADJUSTMENT Turn the telescope in reverse telescope setting. Collimate target A. Press the [SET] key ten times. The number of measurements is displayed at the top right of the display. Collimate target B (more than ±10° from the level) in reverse telescope setting.

  • Page 105: Showing Compensation Systematic Error Of Instrument

    6 CHECK AND ADJUSTMENT 6.5.2 Showing Compensation Systematic Error of Instrument Press the [ADJUST] icon from the main menu. Press the [3AXIS COMPENSATION] key. Press the [CONSTANT DISPLAY] key. Press the [EXIT] key. The display returns to previous menu.

  • Page 106: Setting The Prism / Non-Prism Constant Correction Value

    SETTING THE PRISM / NON-PRISM CONSTANT CORRECTION VALUE The prism constant value of Topcon is set to zero. When using prisms 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 107 7 SETTING THE PRISM / NON-PRISM CONSTANT CORRECTION VALUE There are two ways to enter a prism constant correction value as described below: [ENTER] key [Directly entering the prism constant correction value] Press the prism selection switch and select [Manual]. Enter the prism constant correction value.

  • Page 108: Setting Atmospheric Correction

    8 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 109: Setting Of Atmospheric Correction Value

    8 SETTING ATMOSPHERIC CORRECTION 8.2 Setting of Atmospheric Correction Value • How to Set Temperature and Pressure Value Directly Measure the temperature and air pressure surrounding the instrument beforehand. • Example : Temperature: +15°C, Pressure:1013.3 hPa Turn the power switch on. Press the [ ] key.
  • Page 110 8 SETTING ATMOSPHERIC CORRECTION • How to Set the Atmospheric Correction Value Directly Measure the temperature and air pressure to find atmospheric correction value(PPM) from the chart or correction formula. Turn the power switch on. Press the [ ] key. Press the [Prism constant value, Atmospheric correction] icon.
  • Page 111 8 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 1014 hPa...
  • Page 112 8 SETTING ATMOSPHERIC CORRECTION...
  • Page 113 8 SETTING ATMOSPHERIC CORRECTION...

  • Page 114: Correction For Refraction And Earth Curvature

    9 CORRECTION FOR REFRACTION AND EARTH CURVATURE CORRECTION FOR REFRACTION AND EARTH CURVATURE The instrument measures distance, taking into account correction for refraction and earth curvature. 9.1 Distance Calculation Formula Distance Calculation Formula; with correction for refraction and earth curvature taken into account. Follow the Formula below for converting horizontal and vertical distances.

  • Page 115: Power Source And Charging

    10 POWER SOURCE AND CHARGING POWER SOURCE AND CHARGING 10.1 On-board Battery BT-65Q • To remove Pull the battery cover lever and open the cover. Remove the battery. POWER LED CHARGE LED BT-65Q Battery cover lever BC-30D AD-14 AD-14 AC-cable Battery To charge •...
  • Page 116 10 POWER SOURCE AND CHARGING • Do not charge continuously, otherwise the battery and the charger may be deteriorated. If charging is necessary, use the charger after stopping charge for approximately 30 minutes. • Do not charge the battery in right after the battery is charged, it causes deterioration of the battery in rare cases.

  • Page 117: Detach/Attach Of Tribrach

    11 DETACH/ATTACH OF TRIBRACH DETACH/ATTACH OF TRIBRACH The instrument is easily detached or attached to the tribrach. Tribrach alignment groove Securing screw Tribrach fixing lever Alignment piece Tribrach alignment groove • Detachment 1) Loosen the tribrach fixing lever by turning counterclockwise. 2) Lift the instrument straight upwards and off.

  • Page 118: Special Accessories

    12 SPECIAL ACCESSORIES SPECIAL ACCESSORIES Mini prism The mini prism (25.4mm) is made from precision ground glass and mounted in high impact plastic housings. The mini has the unique capability of being positioned either at a "0" or "–30" with the same prism. Tribrach TR-2 Optical plummet tribrach TR-2P This is detachable tribrach having tribrach fixing...
  • Page 119 12 SPECIAL ACCESSORIES Prism unit case, Model 6 Prism unit case, Model 9 Fixed 9 prisms unit or tilting 3 prisms unit can be This is the plastic case to store and carry various stored in this case. Especially, this is a very easy case sets of prisms.

  • Page 120: Battery System

    13 BATTERY SYSTEM BATTERY SYSTEM In case of On-board battery In case of External battery PC-21 BT-65Q External 12V battery GTS-750/GPT-7500 series Charging Charging time BT-65Q BC-30D Quick charge Approx. 5h for AC100V~240V use Note: Use only recommended batteries or external power source. Use of batteries or an external power source not recommended by us may result in equipment failure.

  • Page 121: Prism System

    14 PRISM SYSTEM PRISM SYSTEM Arrangement according to your needs is possible. Target pole-2 (not used with 9 prisms) Prism-2 Tilting prism Tilting prism Single prism Triple prism Tilting triple prism holder-1 9 prism holder-2 holder-3 holder-2 holder-2 holder-2 with target Plug-3 plate-2 Tribrach...

  • Page 122: 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 123: Message/Error Displays

    16 MESSAGE/ERROR DISPLAYS MESSAGE/ERROR DISPLAYS 16.1 Message Message code Description Countermeasures No value was entered at time of Please Input Value! Input numerical value. numerical value input. A value outside permissible range was Please Input Exact Value! Input exact numerical value. input at time of numerical value input.

  • Page 124: Error

    ----- LNP Range Read Error If this error code is consistently dis- played, repair is required. ----- Prism Constant Set Error • If error still persist after attempting to clear them, contact your local Topcon dealer or Topcon head office.

  • Page 125: Specifications

    3" (GPT-7500) Minimum focus : Not above 1.3 m (distance from the center of rotation of the telescope) Reticle illumination : Provided Distance measurement Measurement range (GTS-750 series) Atmospheric conditions Model Prism Condition 1 Condition 2 Mini prism 1,000m (3,300ft)
  • Page 126 0.5 meter) Kodak gray card (White surface, A square 5 to 2000 m (16.4 to 6561 ft) wall with sides of 1 meter) Measurement accuracy/Least Count in Measurement/Measurement Time (GTS-750 series) • Prism mode Measuring distance Least Count...
  • Page 127 17 SPECIFICATIONS • Non-prism mode (Diffusing Surface) Measuring distance Measurement Least Count Measurement mode Measurement accuracy in Measurement Time 0.2mm 3 sec. 0.2mm mode (0.001ft) (Initial 4 sec.) Fine ± (5mm) m.s.e. 1.2 sec. 1mm mode (0.005ft) (Initial 3 sec.) 1mm mode (0.005ft) 0.5 sec.
  • Page 128 17 SPECIFICATIONS Accuracy(Standard deviation based on DIN 18723) GTS-751/GPT-7501 : 1"(0.3mgon) GTS-752/GPT-7502 : 2"(0.6mgon) GTS-753/GPT-7503 : 3"(1.0mgon) GTS-755/GPT-7505 : 5"(1.5mgon) Diameter of circle : 71 mm Tilt Correction Type : Automatic vertical and Horizontal index Method : Liquid type Compensating Range : ±6' Correction unit : 1"(0.1mgon)
  • Page 129 17 SPECIFICATIONS Weight Instrument GTS-750 : 5.9 kg (12.9 lbs) GPT-7500 : 6.6 kg (14.2 lbs) Battery(BT-65Q) : 0.2 kg (0.4 lbs) Carrying case : 4.0kg (8.8 lbs) Durability Protection against water and dust : IP54 (Based on the standard IEC60529) Ambient Temperature Range : –20°C to +50°C (–4°F to +122°F) External Battery...

  • Page 130: Appendix

    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 : •...
  • Page 131 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.

  • Page 132: Index

    19 INDEX INDEX Task Manager ......14 Touch Panel Calibration ....24 TRIBRACH ......115 Active Sync ....... 51 Angle Measurement ....... 52 Angle measuring mode ....29 Vertical Angle Percent Grade(%) Mode ..55 Auto Power Off ......36 Backlight Adjustment ...... 15 Battery Power Remaining Display ...
  • Page 134 ©2007 TOPCON CORPORATION ALL RIGHTS RESERVED...

Table of Contents