[TUTORIAL] Penggunaan Dasar Digital Theodolite Topcon 205L

Summary

This video provides a detailed tutorial on how to use the Topcon DT-209 digital theodolite, covering the essential steps of centering the tool, calibrating it, and understanding its features. The guide explains the proper usage of buttons and functions, such as adjusting vertical and horizontal angles, locking settings, and using the tool for topographic measurements. The presenter compares the digital theodolite with a traditional waterpass, highlighting its ability to measure both horizontal and vertical angles. The tutorial also includes tips for ensuring accurate readings, using the device's different modes, and understanding the device's key settings.

Takeaways

• 😀 Centering the theodolite is crucial for accurate measurements. Ensure proper alignment with the survey point before use.
• 😀 Power on the Topcon DT-209 using the power button, which displays the instrument's current settings and orientation.
• 😀 The instrument has two main controls for angle measurement: vertical (V) and horizontal. The V button displays vertical angle in percentages.
• 😀 The instrument allows you to lock positions with the 'Hold' button, which helps stabilize the readings.
• 😀 The 'Set to Zero' button resets the horizontal angle to 0°, useful for starting a new measurement session.
• 😀 The 'Function' button enables toggling through different modes and settings, enhancing flexibility during use.
• 😀 Use the focus adjustment ring to ensure a clear view through the instrument and make accurate measurements.
• 😀 Crosshairs (targeting lines) inside the viewfinder aid in precise alignment with the target points for measurement.
• 😀 The instrument provides both horizontal and vertical angle readings, making it suitable for topographic surveying.
• 😀 The Topcon DT-209 offers higher precision than traditional water passes, especially with its digital readouts and detailed angle measurements.
• 😀 Calculating distances from the theodolite can be done by using the vertical and horizontal readings and applying basic formulas for distance measurement.

Q & A

What is the first step in using the Topcon DT-209 digital theodolite?

The first step is centering the theodolite, ensuring that the vial tube is properly aligned and centered.

How do you adjust the theodolite's vertical axis during setup?

To adjust the vertical axis, you can use the fine movement controls, making sure the target is centered using the horizontal and vertical movements.

What is the purpose of the 'ER' and 'L' buttons on the theodolite?

'ER' (or 'Right') is used for clockwise adjustments, while 'L' (or 'Left') is for counterclockwise adjustments when measuring angles.

How does the theodolite measure vertical angles?

The theodolite measures vertical angles with precision, using a scale that displays the angle in degrees, minutes, and seconds, offering more detailed measurements than a simple water level.

What is the function of the 'Hold' button?

The 'Hold' button locks the current reading in place, ensuring that it remains fixed even if the instrument is moved.

How do you reset the horizontal angle to zero?

You can reset the horizontal angle to zero by pressing the 'Reset' button, which will set the measurement to 0°.

What are the key differences between the digital theodolite and a waterpass?

The digital theodolite can measure both vertical and horizontal angles, while a waterpass only measures horizontal alignment. The digital theodolite offers more detailed angle readings and includes advanced features like vertical and horizontal angle adjustment.

What is the purpose of the lens objective adjustment?

The lens objective adjustment is used to focus the image, ensuring that the target is clearly visible and sharp.

How is the digital theodolite similar to a waterpass in usage?

Both instruments are used to determine horizontal alignment. The digital theodolite, however, adds the capability to measure vertical angles, making it more versatile for surveying tasks.

What is the formula to calculate the distance using the digital theodolite?

The distance can be calculated by subtracting the lower crosshair value from the upper crosshair value and multiplying the result by 100.