Vaisala DMT340 - Manual (Page 112)

User's Guide _______________________________________________________________________
110 __________________________________________________________________ M210704EN-G
FILT
Use the serial line command FILT to set the filtering level.
FILT [level] [extfactor]
where
level = Filtering level. The options are:
OFF (no filtering)
ON (standard filtering, enabled by default.
Approximately 13 s moving average)
EXT (extended filtering, approximately 1 min average by
default but configurable by changing the extfactor)
extfactor = Weighted average factor for extended filtering level.
Range 0 ... 1, default 0.030.
In extended filtering mode, the output is calculated based
on the following formula:
[(new result * extfactor) + (old result * (1.0 - extfactor))]
This means that with extfactor value 1 the transmitter
will take only the latest measurement into account, but
with extfactor value 0.1 a new output is a combination of
the previous output (90%) and the latest measurement
(10%).
Example (enable extended filtering):
>filt ext
Filter : EXT
>