Simrad SX90 - REFERENCE MANUAL REV D Reference Manual page 89

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• : Use this setting to tip the vertical slice to avoid the blind
Tip
zone. (► Tip on page 169)
• : Use this function to adjust the bearing. (► Bearing
Bearing
(Vertical) on page 117)
• : This setting controls the amplification of the received
Gain
echoes in the vertical presentation. If you activate the
(Automatic Gain Control) function, this gain setting is
influenced. (► Gain on page 132)
• : Use this function to select the form of the
Pulse Form
transmitted pulse. This could either be FM (Frequency
modulation) with different pulse lengths and number of
frequencies, or CW with different pulse lengths. (► Pulse
Form on page 147)
• : This button controls the transmission power.
TX Power
(► TX Power on page 177)
• : On the SX90 you can alter the sonar's transmission
Frequency
frequency. This is very useful to eliminate interference from
other equipment on board, or from other vessels in the vicinity.
(► Frequency on page 131)
• : Time Varied Gain. This function will automatically
TVG
adjust the gain in the sonar to compensate for geometric
spread and absorption. Note that the TVG will only work
within the first 1000 meters. (► TVG on page 176)
• : Automatic Gain Control. This function will
AGC
automatically reduce the gain if you experience reverberation
and noise, or increase it if the conditions permit it. Using the
AGC will ensure best possible signal processing. (► AGC
on page 112)
• : Reverberation Controlled Gain. This function will
RCG
automatically remove unwanted reverberation from the
bottom or from the sea surface. It may however also remove
scattered fish. (► RCG on page 151)
• : The Ping-to-Ping filter will only show you the
PP Filter
echoes if they are still present after several consecutive pings
(2, 4 or 8). This function will provide you with a more stable
echo presentation, as spurious echoes will be suppressed.
(► PP Filter on page 146)
Menu descriptions
AGC
87