Heat Manager Pro User Manual V1.5 Page 59
The digital filter value is used to filter the measured value.
Normally this value must be set to
1.0 second
(default), but if you have some problems during welding (temperature jumping
up/down) you can set this value a little bit higher.
Note that setting this value higher than 1.0s influences the response of the control
system. Readjusting the PID settings can compensate for this.