Vaisala HUMICAP HMP155 Guía de usuario descargar pdf (Pagina 39)

Chapter 4 ________________________________________________________________ Operation

VAISALA _______________________________________________________________________ 37

System Commands

The commands introduced in this section are used for setting the filtering

level, checking the probe configuration, listing available commands and

possible error messages, and displaying the software information of the

probe.

FILT [0.1…1]

Use the FILT [xxx] serial line command to set the filtering level. The

default setting is 1. The output is calculated based on the following

formula: [( new result * filt) + ( old result * (1.0 - filt))]. This means that

with

FILT value 1 the probe will take only the latest measurement into

account, but with

FILT value 0.1 a new output is a combination of the

previous output (90%) and the latest measurement (10%).

FILT [xxx]

where

xxx = 0.1…1 where 1.0 = no filter and 0.1 = about 16 moving average

Example:

>filt

Filter : 0.800 ?

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 83 84

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Vaisala HUMICAP HMP155 Guía de usuario Pagina 39