Atmospheric Correction - Pentax R-315EX(NX) Instruction Manual

Error Message
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

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
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.
Meaning
Distance measurement
system problem
Angle measurement
system problem
Memory problem
Problem of the internal
EDM parameters
Problem of the internal
ETH parameters
273.14941 + t
What to do
Turn the power off,
and then turn on again.
Repair is needed when
the message appears
consistently.
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71