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Operational notes
Monocle Brightness
The brightness of the monocle can be adjusted to suit the ambient conditions of the dive location. For
example if the dive zone is very dark with very little ambient light then it may be advantageous to reduce
the monocle brightness to avoid glare affecting the diver’s peripheral vision.
The adjustment of monocle brightness is made via the software GUI from the surface control computer.
The standard default setting is 50% and this can be adjusted either up or down via the arrow buttons.
When using a dual frequency 1200ik multibeam sonar there are some operational factors
which must be considered in order to make best use of the dual channel capability of the sonar.
Dual Frequency Options
Low Frequency
– 720 kHz
has a 120° horizontal field of view at +/- 10° about the
horizontal axis (20° in total). In this mode of operation the sonar can image targets up to its maximum range
however the definition of targets will be lower than when used in its higher frequency mode.
High Frequency
– 1200 kHz
also has a 120° horizontal field of view at +/- 6° about the
horizontal axis (12° in total) a slightly reduced vertical beam-width when compared with the lower frequency
channel. This mode will produce higher definition images when compared with the lower frequency
mode. In high frequency (1200kHz) mode, the user has the option of switching to using just a 65° sector
which will double the update rate when compared to utilising the full 120° sector scan.
High frequency (HF) 1200 kHz will work best over the 0
– 40M range scale providing the user with higher
resolution images than if operating on the lower (LF) 720 kHz channel.
Due to acoustic principals the effectiveness of 1200 kHz operation drops of significantly at range. When
operating in auto frequency mode the sonar will automatically switch to LF operation at 40M.
For more details on Genesis operation see the QS guide on our website here -
