GPT-3000 SERIES - FLT Geosystems

12 SETTING ATMOSPHERIC CORRECTION● How to Set the Atmospheric Correction Value DirectlyMeasure the temperature and air pressure to find atmospheric correction value (PPM) from the chart orcorrection formula.Operating procedure Operation Display1 Press the [F4] key to get the soft key page 2 in thedistance measurement mode or page 3 in thecoordinate measurement.2 Press the [F3](S/A) key to set Set Audio Modefrom distance or coordinate measurement mode.[F4][F3]HR: 120°30'40"HD* 123.456 mVD: 5.678 mMEAS MODE NP/P P1↓OFSET S.O S/A P2↓PSM:0.0 PPM 0.0NPM:0.0SIGNAL:[❙ ❙ ❙ ❙ ❙]PRISM PPM T-P –––3 Press the [F2](PPM) key.Current setting value is displayed.[F2]PPM SETPPM :0.0 ppmINPUT ––– ––– ENTER4 Enter atmospheric correction value. *1)Mode returns to Set Audio mode.[F1]Enter Data[F4]*1) Refer to Section 2.6 “How to Enter Alphanumeric characters”.● Input range : –999.9ppm to +999.9ppm,0.1ppm step12-2