Endurance
®
Series
Users Manual, Rev. 2.0, Jun 2020
58
Figure 6-7: Signal Drop: Averaging
6.3.3 Advanced Peak Hold
This function searches the signal for a local peak and writes this value to the output until a new local peak is found.
Before the algorithm restarts searching for a local peak, the object temperature must drop below a predefined
threshold. If the object temperature rises above the held value which has been written to the output so far, the
output signal follows the object temperature again. If the algorithm detects a local peak while the object temperature
is currently below the predefined threshold the output signal jumps to the new maximum temperature of this local
peak. Once the actual temperature has passed a peak above a certain magnitude, a new local peak is found. This
magnitude is called hysteresis.
The threshold is set by means of the programming command <C>, for hysteresis use the command <XY>.
Figure 6-8: Advanced Peak Hold
6.3.4 Valley Hold
This function works like the peak hold function, except it will search the signal for a minimum. The output signal
follows the object temperature until a minimum is reached. The output will hold the minimum temperature value for
the selected duration of the valley hold time. Once the hold time is expired, the valley hold function will reset and
the output will resume tracking the object temperature until a new valley is reached.
The range for the valley hold time can be set from 0.1 to 300.0 s, whereas just 0.1 - 299.9 s will be interpreted as
valley hold duration. Once Valley Hold is set above 0, it automatically activates. A value of 300.0 s indicates that
valley hold post processing depends on an external trigger signal. A low level input (GND) at external input (Trigger)
will promptly interrupt the valley hold function and restarts the valley holding with the current temperature reading.
output temperature
object temperature
Temp
Time
output temperature
object temperature
hysteresis
th
re
sh
o
ld
Temp
Time
