Operation Manual

Simrad SH80
104
850-164385 / Rev.C
Frequency
The Frequency parameters can be called from the Horizontal
and Vertical menus.
Note that this parameter dialogue is optional, it will only be
available if the triple or multiple frequency option has been
installed on the sonar.
TheF requencyparameter dialogueisusedtoselect thetransmitter
and receiver frequency. In addition to the standard frequency, an
optional multiple frequency version is available.
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.