HD402TR
- 11 -
V1.0
4
ALARM OPERATING MODES
Above threshold (RISE): the alarm is turned on if the measurement is greater than
threshold 1 for more than T1 seconds. The alarm is turned off when the measurement
becomes less then threshold 1 minus the hysteresis for more than T2 seconds.
The up arrow on the left of the display is shown when this mode is selected.
Below threshold (FALL): the alarm is turned on if the measurement is less than
threshold 1 for more than T1 seconds. The alarm is turned off when the measurement
becomes greater then threshold 1 plus the hysteresis for more than T2 seconds.
The down arrow on the left of the display is shown when this mode is selected.
Outside thresholds (OUTS): the alarm is turned on if the measurement is greater
than threshold 2 or less than threshold 1 for more than T1 seconds. The alarm is turned
off when the measurement returs between the two thresholds for more than T2 seconds.
No hysteresis is applied to the thresholds.
The up and down arrows on the left of the display are shown when this mode is se-
lected.
Summary of Contents for HD40.2
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