Signal Post Processing Details; Averaging; Peak Hold - Fluke Endurance 1RL Operating Instructions Manual

7 Signal Post Processing Details

7.1 Averaging

Averaging is used to smooth the output signal. The signal is smoothed depending on the defined time
basis. The output signal tracks the detector signal with significant time delay in which noise and short
peaks are damped. A longer average time smoothens the damping behavior. The average time is the
amount of time the output signal needs to reach 90% magnitude of an object temperature jump. The
range for the average time can be set from 0.1 to 300.0 seconds, whereas just 0.1 - 299.9 seconds will be
interpreted as averaging duration. A value of 300.0 seconds indicates that averaging post processing
depends on an external trigger signal. A low level input (GND) at external input (Trigger) will
promptly interrupt the averaging and will restart the average calculation with the current temperature
reading.
Attention: The disadvantage of averaging is the time delay of the output signal. If the temperature
jumps at the input (hot object), the output signal reaches only 90% magnitude of the actual object
temperature after the defined average time.
Once Averaging is set above 0, it automatically activates. Note that other hold functions (like Peak
Hold or Valley Hold) cannot be used concurrently.

7.2 Peak Hold

The output signal follows the object temperature until a maximum is reached. The output will „hold"
the maximum temperature value for the selected duration of the peak hold time. Once the hold time is
expired, the peak hold function will reset and the output will resume tracking the object temperature
until a new peak is reached. The range for the peak hold time can be set from 0.1 to 300.0 seconds,
whereas just 0.1 - 299.9 seconds will be interpreted as peak hold duration. A value of 300.0 seconds
indicates that peak hold post processing depends on an external trigger signal. A low level input
(GND) at external input (Trigger) will promptly interrupt the peak hold function and restarts the peak
holding with the current temperature reading.
ENDURANCE 1R
info@Raytek-Direct.ca
Temp
Signal Post Processing Details
temperature jump
average time
Figure 21: Averaging
Rev. E1 Sep 2015
output temperature
object temperature
90% of temperature
jump
Time
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