1.5Adjusting Display Contrast, Brilliance
1.With the power turned on, press the [POWER/BRILL] key momentarily to show the brilliance/contrast adjustment window.
BRILL/CONTRAST
LOW HIGH 
CONT: 
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LOW HIGH 
BRILL:9
[MENU/ESC] : Exit.
Brilliance/contrast adjustment window
2.Press ◄ or ► to adjust contrast.
3.Press ▲ or ▼ to adjust brilliance.
4.Press the [MENU/ESC] key to escape.
Note: The radar starts up with the
1.6 Choosing the Range
The range selected automatically determines the range ring interval, the number of range rings and pulse repetition rate.
Press the [RANGE+] or
Range 
6 nm
Range ring | 2 |
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interval |
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EBL - - |
| RNG 3.652nm |
VRM - - - |
| BRG 60.2° |
| TTG 00H40M | |
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Location of range and range ring
interval indications
1. OPERATION
1.7 Receiver Sensitivity
The gain control adjusts the sensitivity of the receiver. It works in precisely the same manner as the volume control of a broadcast receiver, amplifying the signals received. The proper setting is such that the background noise is just visible on the screen. If you set up for too little sensitivity, weak echoes may be missed. On the other hand excessive sensitivity yields too much background noise; strong targets may be missed because of the poor contrast between desired echoes and the background noise on the display.
To adjust receiver sensitivity, adjust the gain control so background noise is just visible on the screen.
1.Press the [GAIN] key consecutively until the display shown below appears.
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| GAIN | ||
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| AUTO | : MODERATE | |||
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| MANU |
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| 20 |
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[GAIN] | : A/C SEA MENU | ||||
[MENU/ESC] : Exit.
Gain adjustment window
2.Press ▲ or ▼ to choose AUTO or MANU as appropriate.
Automatic gain adjustment
1)Press ► to open the automatic gain options window.
ROUGH
MODERATE
CALM
Automatic gain options
2)Press ▲ or ▼ to choose ROUGH, MODERATE or CALM depending on sea conditions.
3)Press ◄ to close the window.
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