User`s guide

T
ECHNICAL
R
EFERENCE
Calibration Numbers
93
C
ALIBRATION
N
UMBERS
To increase performance, the software maintains calibration numbers separately
from the weather station. If you do not set calibration numbers from the software,
the weather station and software will not “agree” on what the calibration number
is. Therefore, you must set all calibration numbers (temperature, humidity,
barometer) from the software.
The following explanation of how the station and software determine barometric
pressure may help you understand this better.
The weather station actually reads atmospheric pressure not barometric pressure.
When you set the barometric pressure from the station console, the station auto-
matically calculates the difference between the barometric pressure you enter and
the atmospheric pressure it reads. This difference gets stored as the barometric
pressure calibration number. When displaying the barometric pressure, the sta-
tion reads atmospheric pressure and adds the calibration number to determine
barometric pressure.
When you enter barometric pressure from the software, the software calculates
the calibration number and stores it in the weather station’s memory (in the same
way it would if you set the barometer from the station console) and in the sta-
tion’s configuration file. The station calculates barometric pressure normally,
while the software reads atmospheric pressure from the station and the calibra-
tion number from the station configuration file in order to determine the baromet-
ric pressure.
If you enter barometric pressure (or any calibration number) from the software,
both the software and station will “agree” on the calibration number. If you enter
barometric pressure (or any calibration number) from the weather station console,
nothing gets stored in the station’s configuration file. The calibration number in
the software now differs from the calibration number in the station, and your bul-
letin readings and database will be incorrect.
Note: The software does not support wind speed calibration numbers.
D
ATABASE
O
RGANIZATION
Station Directory
When you create a new station the software creates a station directory (using the
first eight characters of the station name, not including any spaces and punctua-
tion) in the root program directory. Inside of this directory, the software will create
subdirectories to contain station-specific files.
▲ DATANOTE
The DATANOTE directory contains any notes you have entered for database
records. The software assigns its own coded file names to database files. If you
want to delete a note, it is best to do so from the software. Do not rename a
note file.
▲ PLOT
The software automatically creates a PLOT directory into which you may
store plots, plot templates, and strip chart templates. You may, of course, save
plot and strip chart files into any directory you wish.