Operation Manual

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8-39
８
Do not change the set quantization level carelessly. If the level deviates
from the proper value, the ARPA acquisition and tracking functions will
deteriorate.
Otherwise, this may cause accidents to occur.
CAUTION
Procedures
Quantization Level･････････････････････････････････････････
The quantization level determines the minimum signal level of the input video to the ARPA
target detection circuit. In this test, the value of the quantization level can be set in a
range of 1 to 63.
If the value is set to a lower level, weak target echoes will be inputted to the ARPA target
detection circuit, but much radar noise will also be inputted to the circuit together, and
target acquisition and tracking may be disabled. Therefore, it is important to set a value
that is 4 or 5 higher than the detected noise level.
1 Click MENU on the screen. Or press OPTION2 key.
The MAIN Menu will appear.
2 Click CODE INPUT .
The CODE INPUT Menu will appear.
3 Click 0 , then END .
The ADJUST Menu will appear.
4 Click ARPA/AIS .
The ARPA/AIS Menu will appear.
5 Click VIDEO LEVEL .
The VIDEO LEVEL Menu will appear.
6 Click the “3.HIGH LEVEL”edit box.
3.HIGH LEVEL will be selected.
ARPA/AIS
ADJUST
０．
EXIT
3.HIGH LEVEL
1-63
VIDEO LEVEL
45
1.TD LEVEL
2.LOW LEVEL
1-63
35
1-63
40