Chapter 3 Standard Radar Operations 57
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.
D3936-3
RAIN SEA
MANUAL MANUAL
FTC GAIN
O
F
F
75%
50%
O
F
F
D3935-3
LIGHT CONTRASTALARM
ON
25%
TUNE
O
F
F
A
U
T
O
50%
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.
D3987-1
Gain, Sea and/or Tune set to Auto
Status Bar
FTC on
3nm
126°T
AUTO
WKS
FTC
EX
RC
GZ
IR
RR
1/2
H-UP
GST
Rain on
➤ 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.
Adjusting Gain,
Sea Clutter and
Rain Clutter
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