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2 atmospheric correction – Pentax R-315EX(NX) User Manual

Page 71

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Error Message

Meaning

What to do

13.2 Atmospheric Correction

The speed at which light travels through the air varies depending on the temperature and
atmospheric pressure. The R-300X series is designed to measure distances at the speed of light
in order to measure accurately, atmospheric correction needs to be used. The instrument is
designed to correct for weather conditions automatically if the temperature and pressure are
input. Correction is then carried out based on the following formula.

Calculation formula:

K= (276.26713 - 78.565271 • P ) x10

-6

K: Atmospheric Correction Constant
P: Atmospheric pressure (hPa)
t: Temperature(°C)
Distance after Atmospheric Correction D = Ds (1+K)
Ds: Measured distance when no Atmospheric Correction is used.

71

273.14941 + t

ERROR!! EDM ERROR
04 -05, 34-39, 50-53

ERROR!!
ETH ERROR 70-76

ERROR!!
MEMORY ERROR 19

ERROR PS DATA of EDM
ERROR P DATA of EDM

ERROR ETH DATA

Distance measurement
system problem

Angle measurement
system problem

Memory problem

Problem of the internal
EDM parameters

Problem of the internal
ETH parameters

Turn the power off,
and then turn on again.
Repair is needed when
the message appears
consistently.

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