Chapter 4 RA83/84/85/93/94/95 Series
Installation OperationManual
4.7.3.3 Manual STC setting
This setting allows the maximum STC range to be effective up to 6 NM. Use the
following procedure to set up.
(1) Set radar controls as follows:
Range scale: 12 NM, RAIN/SEA: 0, GAIN: 8, BRILL: 10 (Max)
(2) Activate VRM 1 per: DISP>MARK>VRM 1>ON and press the ENT key.
(3) Set VRM 1 to 6.0 NM.
(4) Turn off IR 2 per: DISP>ECHO>IR>OFF and press the ENT key.
(5) Set SEA, GAIN and RAIN to MANUAL mode.
(6) Set SEA to 10 notch (Maximum).
(7) Go ADJUST>PRESET>SEA MANUAL and display the numeral entry window.
(8) Press the Joystick up or down to allow the background noise speckle is reduced
to about 6 NM. Press the ENT key to fix the setting. Record the value.
(9) Repeat the above procedure to the rest of the range scales using the same
value.
(10) Change range scale from one to the other with the SEA control set to maximum.
If the STC effect is not uniform on some ranges, reset the setting repeating the
above
procedure.
(11) Reset IR2 to be activated.
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