Technical data

Chapter 3 __________________________________________________________________ Software
VAISALA________________________________________________________________________ 39
Example: temperature value, string presentation:
Original: -18.7 (5bytes)
Offset: -18.7+50=31.3 (if -50 is minimum of measured value)
Scale: 31.3*10=313 (if 0.1 is resolution of measurement)
313 -> BASE32 -> 9P (2bytes)
BCD Compression
The BCD (Binary Coded Decimal) method is a Positional Number
System, with a radix of 10 and coefficients expressed in 4-bit binary
words. The BCD formatting method produces non-printable binary
reports.
Example2:
3 | 1 | 3
8421|8421|8421
0011|0001|0011
313 -> BCD -> 001100010011 (1,5bytes)
Communication
The available telemetry devices are selectable from the list. All
equipment has its own default setting which can be modified by the
user whenever necessary.
List of Communication Equipment