Operand On Change; Operand On Delta Change; Avg Const (Averaging Parameter Description) - Teltonika FMB920 User Manual

5.21.6 Operand On Change

Record is generated when value changes.

5.21.7 Operand On Delta Change

Record is generated when value changes and absolute value of last value minus actual
input value becomes equal or higher than high level value.
Current value != last value

5.21.8 Avg const (Averaging parameter description)

If avg const value is 10, new value must be present for 1 second to register change to
new value. Internally sampling is done every 40ms, so 25 samples are taken in second. To
configure 5 seconds averaging multiply 10 by 5 yielding 50. The same logic works even if
device is in deep sleep mode.
Averaging follows RC exponential curves, see image bellow:
Figure 46 Hysteresis operand logic
Current value != last value
Figure 47 On change operand logic
|Last value - Current value|
Figure 48 On Delta Change operand logic
Generate record
>=
High level
Generate record
64