23
Operation
Continuous Mode
: The handheld will continuously check sensor values
against the stability criteria even after the sample period and sample
count have been met.
Log Samples
: Logs the sample/s defined by the Sample Period to
memory.
Sample Period
: Time interval between samples that are used to
determine stability. Set the interval in seconds (1 to 900).
Sample Count
: Number of consecutive samples required for stability
(1 to 10).
Select Start Auto Stable to enable.
Averaging
→
Averaging
(
Figure 33
)
The averaging mode determines how the handheld will filter data. A
smaller time frame for the rolling average window allows changes in
the sensor’s measurements to be more quickly observed, while a larger
rolling window provides more stable measurement readings and a
smooth result. Each averaging mode will decrease the time span of the
rolling window if a large change in the sensor measurement is detected,
allowing the handheld to adapt when an event occurs.
The
Default
mode provides optimum averaging for all sensors. This
mode has up to 40 seconds of averaging on the sensors to curb spikes
and outliers, resulting in more stable data.
In
Accelerated
mode, changes in sensor measurements are more quickly
observed than default (approximately 10 seconds of averaging). This
mode is recommended when the sensors are moving through the water,
such as during profiling studies and most spot sampling applications.
NOTE:
For profiling applications, enable Vertical Position under
Depth Display to view unfiltered depth measurements. This
helps to ensure the depth sensor is lowered to the desired
depth without waiting for the averaged measurement.
In
Rapid
mode, sensor response is very fast (approximately 2 seconds of
averaging), but the instrument will never settle on a single steady number.
This mode is recommended when the sensors are moving quickly
through the water, such as rapid profiling and towed applications.
Figure 33
Averaging
Auto Stable
(continued)
