Frequency - Simrad SX90 - REFERENCE MANUAL REV D Reference Manual

307670/D

Frequency

The parameter dialog opens when you click the
Frequency
button in the
Frequency
menus.
Dialog description
This parameter dialog is used to select the transmitter 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.
Note
This parameter dialog will only be available if the triple or
multiple frequency option has been installed on the sonar.
Options
• + (plus): Click to increase the operational sonar frequency.
• – (minus): Click to decrease the operational sonar frequency.
• : Click to close the parameter dialog.
Close
• : Click to access the on-line help.
Help
Related topics
• Horizontal menu on page 83
• Vertical menu on page 85
• Vertical 180 menu on page 86
, and
Horizontal Vertical
Parameters
Vertical 180
131