Adjusting Gain, Sea Clutter And Rain Clutter - Raymarine RL70C Owner's Handbook Manual

Chapter 3 Standard Radar Operations

Adjusting Gain, Sea Clutter and Rain Clutter

Automatic adjustment of Gain, Sea and Tune is available, alternatively you can
set any of these parameters to manual and use the trackpad to adjust its value.
Rain clutter is adjusted manually using the the RAIN or FTC control. GAIN, SEA,
RAIN and FTC are accessed from the GAIN key; TUNE is accessed from the
MULTI key.
Note: Gain, Sea and Tune can only be adjusted if the control is set to Manual
adjustment.
When you select manual GAIN, SEA or TUNE adjustment the soft key icon shows
a vertical slider bar. As you press the trackpad, the value is indicated in the
slider.
When you switch FTC or RAIN On, the soft key icon shows a vertical slider bar.
As you press the trackpad, the value is indicated in the slider.
If you change the settings, the new GAIN, SEA and TUNE modes (auto or manual )
and values remain set even when you turn the radar off and on again; Rain and
FTC are reset to Off at power-on. The status bar indicates which controls are
switched to Auto or On.
Status Bar
3nm
➤ To adjust a parameter:
1. Select a range appropriate to the adjustment you wish to make. The
optimum Tune setting varies slightly for different ranges, depending on the
pulse width used.
O
O
F
F
F
F
O
F
F
126°T
D3936-3
A
U
T
O
D3935-3
Gain, Sea and/or Tune set to Auto
AUTO WKS EX GZ
GST FTC RC IR
FTC on Rain on
57
D3987-1