User's Manual

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JMA-9100 Instruction Manual > 3.BASIC OPERATION > 3.4 GENERAL RADAR OPERATION

3.4.2 Switch Transmitter Pulse Length [GAIN]

Procedures

1) Press [GAIN] dial

Values of the transmitter pulse width are switched.

Usable transmitter pulse width differs according to the type of antenna being used

and the observation range being used. For usable pulse width, see Section 11.8

"SCANNER UNIT (NKE-1139)" ～Section 11.14 "SCANNER UNIT (NKE-

2103-6HS)".

Effects of transmitter pulse width

With selected: The transmitter pulse becomes shorter, and the

range resolution improves. The effect of

suppressing sea clutter returns and rain/snow

clutter returns heightens.

Recommended condition for selection: In bays/harbors where targets are densely

crowded. Rough sea state due to torrential rain or

stormy weather.

With selected: The normal transmitter pulse length is set. Both

range resolution and gain are appropriately set.

Recommended condition for selection: General navigation

With selected: The transmitter pulse becomes longer, and gain

improves. Small targets are zoomed and are easy

to observe. When the sea state is bad, detection

performance decreases.

Recommended condition for selection: Detection of small targets in good weather

conditions.

MP1 MP2 LP1 LP2