Valley Hold - Fluke Endurance 1RL Operating Instructions Manual

Signal Post Processing Details
Temp
Once Peak Hold is set above 0, it automatically activates. The output signal remains the same until one
of two things happens:
The peak hold time runs out. In this case, the signal reverts to actual temperature.
•
• The actual temperature goes above the hold temperature. In this case, starts holding new
peak.
Note that other signal processing functions (like Averaging or Valley Hold) cannot be used
concurrently with Peak Hold.

7.3 Valley Hold

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 seconds, whereas just 0.1 - 299.9 seconds will be interpreted as valley hold duration. A value of
300.0 seconds 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.
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hold time
Figure 22: Peak Hold
Rev. E1 Sep 2015
output temperature
object temperature
hold time
Time
ENDURANCE 1R
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