Page 38 February 2020 – TD 266 OPERATING MANUAL – ZPulse® DCS 4420/4830/4520/4930
2.5.4 Compensation settings
Figure 2-21: Surface cell configuration
Sound Speed (m/s) is the fixed sound speed setting in m/s. This value is used for calculation of current speed values.
Variable sound speed values can be used while sensor is running in Smart Sensor Terminal mode. Default value for
sea water is 1500.
Enable Fixed Heading might be used if there is any magnetic disturbance that might interfere with a compass heading
and the instrument has a fix position. Then Fixed Heading (Deg) can be used to set the offset between the Sensor
North direction and the Magnetic North.
Enable Tilt Compensation is recommended to set active at all time because then the sensor will automatically
compensate for any tilt.
2.5.5 Transducers
Figure 2-22: Configuration of Transducers
Activation X-axis controls active transducers on the X-axis: Alternative settings are 1, 3 or 1+3. Default is 1+3. If there
is a fixed obstruction in front of one transducer this transducer might be turned off by only selecting the other transducer
on that axis.
Activation Y-axis controls active transducers on the Y-axis: Alternative settings are 2, 4 or 2+4. Default is 2+4. If there
is a fixed obstruction in front of one transducer this transducer might be turned off by only selecting the other transducer
on that axis.
Enable Forward Ping. If set to yes the sensor will try to only measure upstream to reduce problems related to
turbulence. If enabled the sensor will start to measure using one transducer on each axis, then it will continue using
these transducers as long as they measure a positive Doppler shift. If one transducer then changes to negative Doppler
shift it will change to the other transducer on the same axis.
To Next Page
Loading...