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Setting the
Sampling Interval
to zero allows the system to collect samples as fast
as possible. If Sampling
Interval
is zero,
Subsamples
will not show.
Setting the
Subsamples
to one means that each sample will consist of only one
data point (default).
The number of samples collected will be logged if the setting
Details
(see
below
)
is enabled. Additionally if
Details
is enabled, it can be accessed by typing LAST
in the command line. Regardless of whether
Details
is enabled, the number of
samples can be seen using the
Diagnostic Menu->Measurement Details
menu via
the front panel.
Slope
Offset
Every measurement is computed by taking the sensor reading, multiplying it by
slope and adding offset to it.
Measurement result = (sensor output)*slope + offset
Slope defaults to 1.0 and offset defaults to 0.0, meaning they will not affect
measurement result by default.
Traditionally, when using an analog sensor, slope and offset are required to
convert the voltage output by the sensor into desired units. The required slope
and offset are provided by the sensor manufacturer.
Note that MONITOR supports more complex equation processing (see
Equations
below).
Slope and offset are applied after equations.
The reading before slope and offset are applied is referred to as the
raw
reading.
For example, if an analog sensor were to provide a voltage of 2 volts, and the user
had setup the
Slope
as 5 and
Offset
as 1, the final reading would be 11 (2*5 + 1).
The
raw
reading would be 2. The
raw
reading can be viewed using
Diagnostic
Menu->Measurement Details
menu via the front panel. Additionally, if
Details
is
enabled, the raw reading is displayed on the command line by typing MEAS or
LAST.
MONITOR offers easy ways to change the current reading of the measurement by
modifying just the offset or both the slope and offset. Please see the sections on
measurement calibration
and
two point calibration
.
Use Equation
Equation
MONITOR allows the data collected from sensors to be processed by an equation.
If the reading provided by the sensor needs more than just an offset and a slope
applied, equations provide that functionality.
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