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12-3

12 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

There fore,

The correction value is +10ppm

Default Chapter4
- General Handling Precautions4
- Display for Safe Use5
- Safety Cautions5
- User6
- Exceptions from Responsibility6
- Laser Safety7
- Labels7
- Symbol Mark While the Laser Is Emitting7
- Table of Contents8
- Standard Set Composition11
1 Nomenclature and Functions12
- Nomenclature12
- Display14
- Operating Key15
- Function Key (Soft Key)16
- Star Key Mode18
- Serial Signal RS-232C Connector21
2 Preparation for Measurement22
- Power Connection22
- Setting Instrument up for Measurement23
- Power Switch Key on24
- Battery Power Remaining Display25
- Vertical and Horizontal Angle Tilt Correction26
- How to Enter Alphanumeric Characters28
- Point Guide29
- Laser Plummet ON/OFF (Only for Laser Plummet Type)30
3 Angle Measurement31
- Measuring Horizontal Angle Right and Vertical Angle31
- Switching Horizontal Angle Right/Left32
- Measuring from the Required Horizontal Angle32
  - Setting by Holding the Angle32
  - Setting a Horizontal Angle from the Keys33
- Vertical Angle Percent Grade(%) Mode33
- Repetition Angle Measurement34
- Buzzer Sounding for Horizontal Angle 90° Increments35
- Compasses ( Vertical Angle)36
4 Distance Measurement37
- Setting of the Atmospheric Correction37
- Setting of the Correction for Prism Constant / Non-Prism Constant37
- Distance Measurement (Continuous Measurement)37
- Distance Measurement (N-Time Measurement/Single Measurement)39
- Fine Mode/Tracking Mode/Coarse Mode40
- Stake out (S.O)41
- Offset Measurement42
5 Coordinate Measurement51
- Setting Coordinate Values of Occupied Point51
- Setting Height of the Instrument52
- Setting Height of Target (Prism Height)52
- Execution of Coordinate Measuring53
6 SPECIAL MODE (Menu Mode)54
- Application Measurement (PROGRAMS)55
- Setting the GRID FACTOR69
- Setting Illumination of Display and Cross Hairs70
- Setting Mode 171
- Setting Contrast of Display76
7 Data Collection77
- Preparation79
- Operational Procedure of DATA COLLECT83
- Data Collect Offset Measurement Mode86
- NEZ Auto Calculation93
- Point to Line Measurement94
  - To Change to the Point to Line Measurement94
  - Executing a Point to Line Measurement95
- Editing PCODE Library [PCODE INPUT]96
- Setting Parameter of Data Collect [CONFIG.]97
8 Layout98
- Preparation100
- Executing a Layout106
  - Layout of Coordinates of Point to Line108
- Setting a New Point109
  - Side Shot Method109
  - Resection Method111
9 Memory Manager Mode115
- Display Internal Memory Status116
- Searching Data117
- File Maintenance121
- Coordinate Data Direct Key Input124
  - Coordinate Data Input124
  - PTL (Point to Line) Data Input125
- Delete a Coordinate Data from a File126
- Editing PCODE Library127
- Data Communications128
- Initialization131
10 Set Audio Mode132
11 Setting the Prism / Non-Prism Constant Value133
12 Setting Atmospheric Correction134
- Calculation of Atmospheric Correction134
- Setting of Atmospheric Correction Value134
13 Correction for Refraction and Earth Curvature139
- Distance Calculation Formula139
14 Power Source and Charging140
- On-Board Battery BT-52QA140
15 Detach/Attach of Tribrach142
16 Selecting Mode143
- Items of the Selecting Mode143
- How to Set Selecting Mode145
17 Check and Adjustment147
- Checking and Adjusting of Instrument Constant147
- Checking the Optical Axis148
  - Checking the Optical Axis of EDM and Theodolite148
  - Checking the Optical Axis of Laser Pointer151
- Checking/Adjusting the Theodolite Functions153
- How to Set the Instrument Constant Value160
- Adjustment of Compensation Systematic Error of Instrument161
- EDM Alignment Checking Mode162
18 Precautions163
19 Special Accessories164
20 Battery System167
21 Prism System168
22 Error Displays169
23 Specifications171
Appendix174
- Dual Axis Compensation174
- Precaution When Charging or Storing Batteries176

Brand	Topcon
Model	GPT-3000 Series
Category	Measuring Instruments
Language	English

Topcon GPT-3000 Series User Manual

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Topcon GPT-3000 Series Specifications

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