Operation
6.4 Post Processing
6.4.1 Averaging
Averaging is used to smooth the output signal. The signal is smoothed depending on the defined time basis, whereby the output signal tracks the detector signal with significant time delay but noise and short peaks are damped. Use a longer average time for more accurate damping behavior. The average time is the amount of time the output signal needs to reach 90% magnitude of an object temperature jump.
Temp
output temperature object temperature
temperature jump
90% of temperature jump
average time
Time
Figure 25: Averaging
A low level input (GND) at external input FTC3 will promptly interrupt the averaging and will start the calculation again.
Attention: The disadvantage of averaging is the time delay of the output signal. In case of having a temperature jump at the input (hot
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