Simrad EQ60 - Manual (Page 80)

Simrad EQ60
68
857-164342 / Rev.C
Advanced Transceiver
This dialogue box is accessed from the
Transceiver Settings
dialogue box. It displays detailed numeric information
characterising the channel. This includes transducer parameters,
exact transmit frequency and receiver processing parameters.
Parameters
The parameters shown in this dialogue box are determined
during the transceiver installation procedure.
The descriptions are included for information only. You do not
need to understand these parameters to operate the echo sounder.
Frequency [Hz] - This is the nominal resonant frequency for
the transducer.
Beam type - Three different transducer beam types are
available: Single, Split and Triple. If your system is capable of
operating a Split- or Triple beam transducer, it will also be able
to measure the position of a target in the beam. The echo
sounder can then compensate for the known beam pattern to
obtain a true target strength.
Gain [dB] - The transducer gain presented by calculating the
directivity multiplied with the transducer’s efficiency. The value
is obtained during system calibration. If no calibration takes
place, the manufacturer’s default setting is used.
Two-way beam angle [dB] - This is a key transducer
parameter. The value describes the solid angle at the apex of the
ideal conical beam.
Sa Correction [dB] - This parameter is determined during the
calibration process. The value represents the correction required
to the Sv constant to harmonize the TS and sA measurements.