User's Manual

Furuno Sounders

LF: Lower frequencies, (50 kHz) The 50 kHz frequency is

useful for general detection and judging bottom condition.

HF: Higher frequencies, (200 kHz) The higher frequency of

the ultrasonic signal the better the resolution. For this reason the

200 kHz frequency is ideal for detailed observation of fish schools..

Note: At this time the Zoom modes are not available (only HF or LF

screen are supported)

The graphical Echo can be displayed either in Single Frequency or Dual Frequency depending on

your choice.

Single Frequency

Following picture shows the depth graphical echo when Single Frequency is chosen. The Single

frequency display shows either the HF (left-hand on picture)graphical echo or LF (Right-hand on

picture) graphical echo. To select transmission frequency mode, click the appropriate button (either HF

or LF) on the Sounder ribbon toolbar.

Dual Frequency

Following picture shows the depth graphical echo when Dual Frequency is chosen. The Dual

Frequency display provides both HF (on Left-hand frame in the picture) and LF (on Right-hand frame in

the picture). This display can be useful for comparing same picture with two different sounding

frequencies.