Installation manual

Simrad SH80

Frequency

The Frequency parameter dialogue opens when you click the

Frequency button in the Horizontal and Vertical menus.

This parameter dialogue is used to select the transmitter and

receiver frequency. In addition to the standard frequency, an

optional multiple frequency version is available.

Note

This parameter dialogue will only be available if the triple or

multiple frequency option has been installed on the sonar.

If multiple frequencies are installed, they are mainly intended for

suppression of interference from other hydroacoustic equipment.

However, the sound absorption in salt water decreases with the

frequency, thus giving lower frequencies a longer range. If only

the standard frequency is installed, Simrad offers a one-month

free test period for the multiple frequencies.

The following options are available in the

Frequency parameter

dialogue:

• + (plus): Click to increase the operational sonar frequency.

• – (minus): Click to decrease the operational sonar frequency.

•

Close: C lick to close the parameter dialogue.

•

Help: Click to access the on-line help.