Current Help System: PC-DMIS Portable (View Core Help)

### Environmental Parameters tab

Machine Options dialog box - Environmental Parameters tab

Atmospheric Conditions

- Use Temperature Station: This determines whether or not the Leica Meteo Station is used. A Meteo Station collects data automatically and requires no manual interaction.

If no Meteo Station is connected, make sure that the correct values are entered manually. This is also possible from the Tracker Status bar.

- Air Temperature: Allows you to specify the current temperature of the working environment in either Fahrenheit (F) or Celsius (C).

- Pressure: Allows you to specify the air pressure of your working environment in terms of mBar, HPascal, MmHg, or InHg.

- Humidity: Allows you to specify the percentage of humidity of your working environment.

Important: These Meteo parameters have a direct influence on the distance measurement. A change of 1°C causes a measurement difference of 1ppm. A change of 3.5mbar causes a measurement difference of 1ppm.

Refraction Index

- IFM: Displays the Interferometer refraction value.

- ADM: Displays the Absolute Distance Meter refraction value.