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Topcon GPT-7500 Series, Instruction Manual

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Topcon GPT-7500 Series Instruction Manual Download Page 106

104

   7 SETTING THE PRISM / NON-PRISM CONSTANT CORRECTION VALUE

7

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.

[Example]

•

How to Set Prism Constant Value

Note:

Confirm the non-prism constant value is set at 0 when measuring target such as walls in 
Non-prism mode/Non-prism long mode.

Prism name

Prism constant value

Prism constant correction value

General Topcon prism

0mm

0mm

Pinpole prism set L1

Pinpole prism holder L1

+22mm or 0mm

-22mm or 0mm

Prism unit A2

-14mm

+14mm

Prism unit A5

-18mm

+18mm

Prism unit A6

0mm

0mm

Prism unit A7

+2mm

-2mm

1

Turn the power switch on.

2

Press the [

] key.

3

Press the 
[Prism constant value, Atmospheric correction] 
icon.

4

Press the [Prism constant value] icon.

[Prism constant value] icon

[Prism constant value, Atmospheric correction] icon

[Non-Prism constant value] icon

Summary of Contents for GPT-7500 Series

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

Page 2: ......

Page 3: ...k 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 f...

Page 4: ...heck Confirm battery level remaining before operating Memory back up The back up battery built in the instrument needs to be charged approximately 24hrs before using it for the first time after purcha...

Page 5: ...empt to repair the instrument yourself Cause eye injury or blindness Do not stare into beam High temperature may cause fire Do not cover the charger while it is charging Risk of fire or electric shock...

Page 6: ...ducts CAUTION Do not connect or disconnect equipment with wet hands you are at risk of electric shocks if you do Use of controls or adjustment or performance of procedures other than those specified h...

Page 7: ...manufactured and sold in accordance with Performance Standards for Light Emitting Products FDA BRH 21 CFR 1040 or Radiation Safety of Laser Products Equipment Classification Requirements and User s Gu...

Page 8: ...ol Mark while the Laser is Emitting These symbol marks will come on while the laser is working When the Laser Pointer light is ON Class 2 CLASSI I Laser When distance is being measured Class 1 CLASS I...

Page 9: ...ch Panel Calibration 24 1 8 Operating Panel Key 26 1 8 1 Operating Key 26 1 8 2 Turning OFF the Touch Panel Function 27 1 9 Power OFF 27 1 10 Function Key Soft Key 28 1 11 Star Key Mode 30 1 11 1 Swit...

Page 10: ...cking of the accuracy of the non prism mode non prism long mode 86 6 2 Checking the Optical Axis 87 6 2 1 Checking the optical axis of EDM and theodolite 87 6 2 2 Checking the optical axis of Laser po...

Page 11: ...9 16 MESSAGE ERROR DISPLAYS 121 16 1 Message 121 16 2 Error 122 17 SPECIFICATIONS 123 18 APPENDIX 128 Dual Axis Compensation 128 19 INDEX 130...

Page 12: ...eveling screw Base Handle fixing screw Sighting collimator Carrying handle Laser pointer Laser aperture Card cover lever Card cover Hardware reset switch Inside the cover Tribrach fixing lever USB con...

Page 13: ...s Display window With touch panel Cover sensor Inside the cover Power supply connector Serial Signal Connector Vertical motion clamp 1 Vertical tangent screw 2speed way GPT 7501 7502 7503 GTS 751 752...

Page 14: ...ent Error of vertical angle 0 datum Setting instrument constant value Compensation systematic error of Instrument Checking the optical axis of EDM see Chapter 6 CHECK AND ADJUSTMENT PARAMETERS SETTING...

Page 15: ...S Single measurement N N coordinate N N times measurement E E coordinate PPM Atmospheric correction value Z Z coordinate PSM Prism constant correction value EDM working NPM Non Prism constant correcti...

Page 16: ...easuring key To be angle measuring mode Distance measuring key To be distance measuring mode Coordinate measuring key To be coordinate measuring mode REC REC key Result of measurement is transferred S...

Page 17: ...ht brightness by itself when it s not in use In addition the instrument can control the backlight brightness automatically by an equipped illuminometer You can adjust the settings of this function to...

Page 18: ...ATURE AND FUNCTIONS 3 Press the time menu down arrow to select the reducing time Factory setting is 3 minutes as default 4 Press the OK key on title bar After that Power Properties screen will close a...

Page 19: ...ght 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 2 Adjust the brightness by pressing UP DOWN butt...

Page 20: ...utomatic lighting column Factory setting is The light is switched on with an illuminometer as default 2 Press the OK key on title bar After that Power Properties screen will close automatically The Ti...

Page 21: ...Key light is always on Key light synchronizes with backlight 1 Press the tab Key Light You can see the Key Light screen on Display 2 Select a Radio button Factory setting is Key light synchronizes wit...

Page 22: ...asiness Your data will be restored to latest condition 1 automatically when rebooting by using the Backup function The Backup function saves all data files of RAM except for OS files registry file and...

Page 23: ...be incomplete if remaining capacity of Internal Disk is not enough Please make sure the remaining capacity of Internal Disk before proceeding to the data back up Restoration will be impossible if you...

Page 24: ...ion Factory setting is ON as default 2 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 1 On the RAM Backup S...

Page 25: ...reinstall the applications and the data you install on your instrument If the battery cover is not completely closed the instrument will not operate normally regardless of whether the battery or the...

Page 26: ...t is not responding properly to your taps you may need to calibrate the touch panel How to calibrate the touch panel 1 Press the icon Start Settings Control Panel Stylus You can see the Stylus Propert...

Page 27: ...E AND FUNCTIONS 4 Using the stylus pen press the center of the targets on the screen 5 After pressing all targets 5 points press the ENT key or tap the display 6 Press the OK key The display returns t...

Page 28: ...inputting values Tab Tab key Moves the cursor to the right or downwards B S Back space key When inputting numbers or characters return the cursor to the left Shift Shift key Used with other keys Refer...

Page 29: ...Press the Esc key The touch panel function will resume operation 1 9 Power OFF When turning off the power be sure to turn off the GTS 750 GPT 7500 s power switch Do not turn off the power by removing...

Page 30: ...functions are according to the displayed message Coordinate measuring mode Page 1 Angle measuring mode Page 1 Distance measuring mode Page 1 Angle measuring mode Page 2 Distance measuring mode Page 2...

Page 31: ...ches R L rotation of horizontal angle F4 P2 The function of soft keys on next page P1 1 F1 MEAS Distance measuring starts F2 MODE Sets to the mode for Fine Coarse or Coarse 10mm F3 F4 P1 The function...

Page 32: ...graphic This function is good for level the instrument when the circular level is difficult to see directly In the displays of reverse side the graphic bubble moves in reverse Signal level icon Point...

Page 33: ...st and simple to use Instrument Illuminate Blink The Point Guide should be used within a distance of 100 meters 328 ft The quality of its results will depend on the weather conditions and the user s e...

Page 34: ...limation when the target is difficult to find The received return signal level is displayed with bar graph as follows Reticle illumination Select the brightness by sliding UP DOWN slider The brightnes...

Page 35: ...ointer when looking through the telescope Therefore please look directly with the naked eye at the point indicated by the laser pointer The distance to which the laser pointer can be used will vary wi...

Page 36: ...he object and the measurement may cause inaccuracies See Precautions for Use of Non prism long mode on page 57 If there is a certain distance between the object and its rear or front the correct measu...

Page 37: ...NOMENCLATURE AND FUNCTIONS 1 11 2Setting by Using Star Key Example Switch on the laser pointer 1 Turn the power switch on 2 Press the key 3 Press the Laser pointer icon The laser pointer will be turne...

Page 38: ...en it s not in use You can adjust the settings of this function How to adjust the settings of auto power off function 1 Press the icon Start Settings Control Panel Power You can see the Power Properti...

Page 39: ...erties 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...

Page 40: ...ync Using a USB memory 1 Open the USB Port cover 2 Insert a USB memory into the Type A side 3 Confirm that the USB memory has been recognized When using the USB port Mini B Type A do not rotate the in...

Page 41: ...ng 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 Selecting an external battery When using an external bat...

Page 42: ...ment horizontally by using the Horizontal motion clamp screw and place the plate level parallel with the line connecting leveling screws A and B and then bring the bubble to the center of the plate le...

Page 43: ...Remaining Display 1 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...

Page 44: ...2 For general usage of the battery see Chapter 10 POWER SOURCE AND CHARGING 3 The battery power remaining display shows the power level regarding to the measurement mode now operating The safety condi...

Page 45: ...X and Y directions For more information about dual axis compensation see Chapter 18 APPENDIX The display of Vertical or Horizontal angle is unstable when instrument is on an unstable stage or a windy...

Page 46: ...ple Setting Tilt OFF The setting performed here will be interlocked with setting in Chapter 5 PARAMETERS SETTING MODE 1 Press the F4 key to get the function page 2 2 Press the F1 key Current setting i...

Page 47: ...d 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...

Page 48: ...assigned to one numeral key The other is by using the software input panel Press the key or press keyboard icon on the task bar will invoke the software input panel Example Enter job_104 as the New F...

Page 49: ...n the display which indicate a entering character Then j will be displayed 5 Input o Press 5 MNO 5 5 The character in the sub window will be altered m n o Then o will be appended after j 6 Input b Pre...

Page 50: ...y to be returning numeric mode Alphabet letter mode indicator will be disappeared on the task bar 9 Input 104 Press 1 0 4 Then 104 will be appended after job_ 10 Press the ENT key In alphabet letter m...

Page 51: ...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 To change the keyboard Press the CAP key or the au key 2 To h...

Page 52: ...ith your hand to protect the card against falling 3 Extract the card 4 Close the card cover Please make sure you have the front and back of the CF cards facing correctly when inserting into the card s...

Page 53: ...C if it is not already installed 2 Connect the instrument to your PC with an interface cable F 25 as shown below 3 The instrument will give the prompt Conneting to Host 4 The PC will prompt you to set...

Page 54: ...ake sure the mode is in angle measurement 1 Collimate the 1st target A 2 Set horizontal angle of target A at 0 00 00 Press the F1 key and the YES key 3 Collimate the 2nd target B The required H V angl...

Page 55: ...o that the cross hairs are clearly observed Turn the diopter ring toward you first and then backward to focus 2 Aim the target at the peak of the triangle mark of the sighting collimator Allow a certa...

Page 56: ...s the F2 HOLD key 3 Collimate the target 1 4 Press the YES key to finish holding the horizontal angle The display turns back to normal angle measurement mode 1 To return to the previous mode press the...

Page 57: ...MENT MODE 3 1 4 Vertical Angle Percent Grade Mode Make sure the mode is angle measurement 1 Press the F4 key to get the function as on page 2 2 Press the F2 key 1 1 Every time pressing the F2 key the...

Page 58: ...h over Prism mode to Non prism mode or Non prism long mode press the NP P soft key in each measurement display NP of Non prism mode indicator will be shown at the right corner of the display in Non pr...

Page 59: ...rightly as in the cases below may cause incorrect measurement In such cases collimate the position where the beam is not fallen besides the measured surface set measurement distance range Chapter 3 2...

Page 60: ...of another manufacture the appropriate constant shall be set beforehand Setting the prism non prism constant value see Chapter 7 SETTING THE PRISM NON PRISM CONSTANT CORRECTION VALUE The setting value...

Page 61: ...ANDARD MEASUREMENT MODE 4 Input the distance range by pressing the numeric key 1 Example 10m 5 Press the ENTER key The display returns to the star key mode 1 Input range 5 m 1 800 m 17 ft 5 900 ft ENT...

Page 62: ...cters will be shown on the 4th line right hand of the display to represent measurement mode F Fine C Coarse t Tracking R Continuous Repeat S Single N N times 2 When EDM is working the mark appears in...

Page 63: ...been set at single measurement at factory 1 Setting the number of times Refer to Chapter 5 PARAMETERS SETTING MODE 2 Measuring Method Confirm the angle measurement mode 1 Collimate the center of the p...

Page 64: ...or 0 005ft Coarse mode This mode measures in shorter time than in fine mode Use this mode for the objects which may be slightly unstable Measurement time approx 0 5seconds The unit to be displayed is...

Page 65: ...ed is 5mm 0 015ft Tracking mode This mode measures in shorter time than in coarse 5mm mode Use this mode for stake out measurement It is very useful when tailing the moving object or carrying out stak...

Page 66: ...an be performed for horizontal distance HD relative elevation VD or slope distance SD 1 Collimate the center of prism 2 Press the F2 key 3 Select the measurement mode by pressing the F1 F2 or F3 key 2...

Page 67: ...value is displayed 3 With the HD SD keys select a mode for inputting the standard distance 4 Enter the horizontal distance for stake out 5 Press the SET key 6 Press the EXIT key 7 Collimate the Prism...

Page 68: ...occupied point according to coordinate origin and the instrument automatically converts and displays the unknown point reflector point coordinates following the origin Confirm the angle measurement m...

Page 69: ...6 Press the SET key 1 7 Press the E key 8 Input the E coord 9 Press the SET key 1 10 Press the Z key 11 Input the Z coord 12 Press the SET key 1 13 Press the EXIT key The display returns to coordinate...

Page 70: ...will be measured directly Example Instrument height Confirm the angle measurement mode 1 Press the key 2 Press the F4 key to get the function as in page 2 3 Press the F2 key The previous data will be...

Page 71: ...ted from the center point of the instrument n e z Coordinates of unknown point N1 E1 Z1 N1 N0 n E1 E0 e Z1 Z0 INST HT z R HT Confirm the angle measurement mode 1 Set coordinates values of occupied poi...

Page 72: ...stance data only HD VD or SD 1 With the SETUP mode set the communication parameters Refer to Chapter 5 PARAMETERS SETTING MODE 2 After setting the communication parameters select the distance measurem...

Page 73: ...Distance measurement mode 1 With the SETUP mode set the communication parameters Refer to Chapter 5 PARAMETERS SETTING MODE 2 After setting the communication parameters select the distance measurement...

Page 74: ...Setting a Direction Angle for Backsight Orientation BS Repetition angle measurement Refer to Chapter 4 4 Repetition Angle Measurement REP Missing line measurement Refer to Chapter 4 3 Missing Line Me...

Page 75: ...and backsight coordinate input display appears After the coordinate values are entered for both points the instrument calculates the backsight direction angle for orientation Also the occupied coordin...

Page 76: ...oordinate 8 345m 3 Input N and E coordinate of backsight point A Example N coordinate 54 321m E coordinate 12 345m 4 To memorize the occupied point press the SET OCC key 5 Press the YES key 6 Press th...

Page 77: ...easurement will start from the prism reference point If no prism height is used the remote elevation will start from any reference point in which the vertical angle is established In both procedures t...

Page 78: ...E 5 Press the YES key 6 Collimate prism 7 Press the Meas Prism key 8 Press the SET key To measure the distance again press the RE TRY key 9 Collimate target K Vertical angle VA and Vertical distance V...

Page 79: ...the REM icon 2 Select the NO button 3 Collimate prism 4 Press the Meas Prism key 5 Press the SET key 6 Collimate ground point G 7 Press the Meas Ground key 8 Press the SET key 9 Collimate target K Ve...

Page 80: ...mplish 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 Example MLM Method A B A C Procedure of MLM Method A B B C is completely same as Met...

Page 81: ...ent 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 6 To measure the distance between points A and C re...

Page 82: ...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 angl...

Page 83: ...MODE The total of angle and the mean of angle are shown 6 Repeat procedure 2 5 to measure the desired number of repetitions Horizontal angle can be accumulated up to 99 times To clear all data press t...

Page 84: ...G MODE 5 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 s...

Page 85: ...e power is on to angle measurement or distance measurement DIST MODE FINE CRS TRK After turning on the power select the same measuring mode FINE CRS TRK as when distance measurement was initially carr...

Page 86: ...ernal device the protocol for handshaking can omit the ACK coming from the external device so data is not sent again OFF Omit the ACK ON Standard Menu Selecting Item Contents DIST MEAS COUNT SET 0 99...

Page 87: ...e SETUP icon 2 Press the MEASUREMENT key 3 Press the MEASUREMENT1 key 4 Press the NEXT key three times 5 Select the OFF button of S A BUZZER 1 6 When the SET key is pressed the setting will be set and...

Page 88: ...line s actual length If the difference between the two is within the range of the nominal accuracy change the instrument constant of the non prism mode and the instrument constant of the non prism lon...

Page 89: ...prism on the cross hairs 3 Set to the measure mode to distance measurement or set audio 4 Sight through the eyepiece and focus the blinking red light spot by turning the focusing knob in the directio...

Page 90: ...ess the EDM CHECK key In non prism long mode The unit can not switch into EDM check mode In EDM check mode The unit can not switch into star key mode 4 Collimate the center of a prism by prism mode Th...

Page 91: ...display to adjust at the level of one to two as shown in below by turning the horizontal tangent screw 8 Note the horizontal angle displayed 9 Turn the horizontal tangent screw move the collimating po...

Page 92: ...difference is within 2 no problem for use Vertical direction confirmation Do not move Horizontal direction 14 Carry out as Horizontal direction confirmation Compare the reading vertical angle of cent...

Page 93: ...OLD key to hold the quantity of the light The mark will appear on the right side of the signal level indicator 18 Repeat the previous procedure 6 to 14 in the same way in the non prism mode If the dif...

Page 94: ...there will be no problems with using the instrument If the distance is greater than 6 mm carry out the following steps to align the center of the laser pointer with the point of intersection and to a...

Page 95: ...n shown in the drawing About30 The direction of the laser pointer Adjustment screws As seen from above About30 Tighten the 3 screws so that they are equally tight Do not lose the rubber caps of the ad...

Page 96: ...ten by revolving in the direction of tightening tension 4 The attachment screws must also be tightened sufficiently upon completion of adjustments 5 Always repeat checking operations after adjustments...

Page 97: ...by this method 2 Correct the remaining amount of the bubble displacement with the leveling screws 3 Rotate the instrument 180 or 200g around the vertical axis once more and check bubble movement If t...

Page 98: ...point appears to be displaced from the vertical cross hair as the telescope is swung vertically then proceed with the following adjustment Adjustment 1 Unscrew the cross hair adjustment section cover...

Page 99: ...once more and tighten the horizontal motion clamp 7 Loosen the vertical motion clamp only and rotate the telescope 180 or 200g around the horizontal axis once more and fix a sight on Point C which sho...

Page 100: ...instrument 180 or 200g around the vertical axis once more and check the center mark If it is coincided to the point then further adjustment is not required Otherwise repeat the adjustment First loose...

Page 101: ...or vertical angle 0 setting is the criteria for determining instrument coordinate origin use special care for adjustment 1 Level the instrument properly with the plate level 2 Press the ADJUST icon 3...

Page 102: ...hich is obtained in section 6 1 Checking and Adjusting of Instrument Constant follow as below 1 Press the ADJUST icon from the main menu 2 Press the INST CONSTANT key 3 Press the PRISM key 4 Input val...

Page 103: ...ing 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 side...

Page 104: ...get B more than 10 from the level in reverse telescope setting 11 Press the SET key ten times The number of measurements is displayed at the top right of the display 1 12 Turn the telescope in normal...

Page 105: ...6 5 2 Showing Compensation Systematic Error of Instrument 1 Press the ADJUST icon from the main menu 2 Press the 3AXIS COMPENSATION key 3 Press the CONSTANT DISPLAY key 4 Press the EXIT key The displa...

Page 106: ...firm the non prism constant value is set at 0 when measuring target such as walls in Non prism mode Non prism long mode Prism name Prism constant value Prism constant correction value General Topcon p...

Page 107: ...4mm When the prism constant value is 14mm the prism constant correction value will be 14mm 1 Input range 99 9mm to 99 9mm 0 1mm step 7 Press the ENTER key The prism constant correction value has been...

Page 108: ...Ka l Measured distance when atmospheric correction is not set Example In case Temperature 20 C Air pressure 847hPa l 1000 m 50 10 6 50 ppm L 1000 1 50 10 6 1000 050 m GPT 7500 The followings are the c...

Page 109: ...Turn the power switch on 2 Press the key 3 Press the Prism constant value Atmospheric correction icon 4 Press the TEMP icon 5 Input Temp value and Press value Example 1 Temp 15 0 C Press 1013 3hPa 6...

Page 110: ...ric correction value PPM from the chart or correction formula 1 Turn the power switch on 2 Press the key 3 Press the Prism constant value Atmospheric correction icon 4 Press the PPM icon 5 Input atmos...

Page 111: ...y 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 atmospheri...

Page 112: ...110 8 SETTING ATMOSPHERIC CORRECTION...

Page 113: ...111 8 SETTING ATMOSPHERIC CORRECTION...

Page 114: ...cal distances Horizontal distance D AC or BE Vertical distance Z BC or EA D L cos 2 sin Z L sin cos L cos 2R Earth curvature correcting item K Lcos 2R Atmospheric refraction correcting item K 0 14 or...

Page 115: ...ging such as after the instrument has been in storage over an extended period of time in a discharge state a full charge may not be possible with a single charging In such a case recharge a second tim...

Page 116: ...sing with instrument 5 If the instrument is not used over an extended period of time store in a place at 30 C or below in a 50 charged state Over discharge will lower performance and a full charge may...

Page 117: ...ower part of the instrument with the tribrach alignment groove 2 Tighten the tribrach fixing lever firmly by turning clockwise Locking the Tribrach Fixing lever The tribrach fixing lever can be locked...

Page 118: ...plummet tribrach TR 2P This is detachable tribrach having built in optical plummet telescope Compatible with Wild Trough compass Model 6 Shock proof construction No clamp is necessary when carrying t...

Page 119: ...it case Model 9 This is the plastic case to store and carry various sets of prisms The case covers one of the following prism sets Tilt single prism set Tilt single prism set with a target plate Fixed...

Page 120: ...T 65Q GTS 750 GPT 7500 series Charging BT 65Q Charging time BC 30D Quick charge for AC100V 240V use Approx 5h Note Use only recommended batteries or external power source Use of batteries or an extern...

Page 121: ...ribrach adaptor S2 and pole adaptor F2 to coincide with the height of GTS 750 GPT 7500 series Target pole 2 not used with 9 prisms Prism 2 Tilting prism holder 2 with target plate 2 Pole adaptor A Pol...

Page 122: ...ing the carrying case and taking out the instrument place the case horizontally then open the case 7 When returning the instrument to its case be sure to match the white positioning marks provided wit...

Page 123: ...Confirm the operation procedure is correct and adjust again V Angle 0Set Error Step2 V angle 0 set is over in reverse telescope V Angle 0Set Over Total V angle 0 set is over in normal and reverse tel...

Page 124: ...ct XTILT OVER X tilt is over Instrument tilts over more than 6 minutes Level the instrument properly YTILT OVER Y tilt is over Instrument tilts over more than 6 minutes V Angle Error Displayed when th...

Page 125: ...moderate sunlight with light heat shimmer Condition 2 No haze with visibility about 40km 25 miles overcast with no heat shimmer Non prism mode Model Prism Atmospheric conditions Condition 1 Condition...

Page 126: ...2000 m 16 4 to 6561 ft Measurement mode Measurement accuracy Least Count in Measurement Measurement Time Fine 0 2mm mode 2mm 2ppm x D m s e 0 2mm 0 001ft 2 8 sec Initial 5 sec 1mm mode 1mm 0 005ft 1 2...

Page 127: ...VEY feet 1meter 3 2808333333 ft Electronic Angle Measurement Method Absolute reading Detecting system Horizontal 2 sides Vertical 2 sides Minimum reading GTS 751 GPT 7501 1 0 5 0 5mgon 0 1mgon 5mmil 2...

Page 128: ...ystem Interface Based on RS 232C 6 pin Based on CompactFlash Type I II CompactFlash is a trademark of SanDisk corporation USB Type miniB Rev 1 1 Active Sync Type A Rev 1 1 USB Memory Others Instrument...

Page 129: ...rating time when fully recharged at 20 C 68 F Including distance measurement GTS 750 Approx 8 0 hours GPT 7500 Approx 5 0 hours Angle measurement only Approx 12hours Battery Charger BC 30D with AC DC...

Page 130: ...et is 10 above the horizon and rotated 90 in azimuth from the direction of the vertical axis error Hzerr 30 sin tan10 Hzerr 30 1 0 176326 5 29 From the above example it can be seen that horizontal ang...

Page 131: ...it is necessary to keep the compensators in proper adjustment The compensators must agree with the actual level condition of the instrument Through various environmental stresses the agreement betwee...

Page 132: ...et 23 How to Enter Numerals and Alphabet Letters 46 How to Set the Instrument Constant Value 100 I Instrument Constant 86 L Laser Pointer 33 92 M Main Menu Contains 12 Memory Card 50 O Operating Panel...

Page 133: ......

Page 134: ...2007 TOPCON CORPORATION ALL RIGHTS RESERVED...

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