Nortek DVL 1000 300m, Руководство пользователя

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Practical Elements of Operation 21
© 2017 Nortek AS
Water Track Data: This is the data output (and recording if selected) format for the DVL's Water
track. The DF22 binary data format includes complete DVL data products, while variants of PD# are
available for platforms limited to this legacy format. A complete description is found in the DVL
Integrators Guide.
Current Profiling (licensed feature)
Enable Current Profiling: Check this box to enable current profiling.
Interleave Ratio: This determines how frequently current profile data is measured (bottom track and
current profiling do not operate concurrently). The ratio, N, specifies that every Nth measurement is a
current profile measurement. An interleave ratio of 2, for example, will provide alternating pings
between bottom track and current profiles whereas a ratio of 3 will configure two consecutive bottom
tracks measurements followed by one current profile measurement.
Cell Size: This is the size of the cell (along the DVL's Z-axis) for which velocity estimates are
performed.
Blanking Distance: This is the distance at which the current profile begins. Note that position of the
first cell is the sum of the blanking distance and cell size. This follows standard ADCP principles.
Range to Last Cell: This is the distance along the DVL's Z-axis to the last measurement cell.
Velocity Range: This is the velocity range (positive and negative) along the beam axes to estimate
currents. The corresponding horizontal velocity range is scaled the same way as the Bottom Track
velocity range.
Transmit Power: This the amount of acoustic energy that is output from the DVL. Lower power is
sometimes desirable if there is an interest in reducing power consumption or if the DVL will only be
operating close to the bottom. The value of 0 dB represents maximum power output. Power is
decreased by applying negative values.
Coordinate System: This specifies if the data is output in beam coordinates or the DVL's XYZ
coordinates.
Data: Selects the data format for outputting current profile estimates. The DF3 data format is the
most complete and efficient format while the PD0 is complete but contains irrelevant fields and thus
consumes more space. NMEA formats are also available. A complete description is found in the
DVL Integrator's Guide.