Page 78 February 2020 – TD 266 OPERATING MANUAL – ZPulse® DCS 4420/4830/4520/4930
Sheet 2/3 contains Compensation settings
Sound Speed (m/s) is the fixed sound speed setting in m/s. This value is
used for calculation of current speed values. 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.M) 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.
Figure 5-7: Compensation
Sheet 3/3 contains Transducers settings
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.
When finished with the configuration, click finish to store new settings
and the X in the top right corner to leave this menu.
Figure 5-8: Transducers
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