JRC JMA-3300 Series Instruction Manual page 51

Marine radar equipment
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Starting transmission
1 Press the [TX/PRF] key.
The radar starts transmission and the antenna starts rotating.
Reference:
The radar cannot start transmission if you press the [TX/PRF] key while the preheating time
is displayed.
Stopping transmission
1 Press the [STBY] key on the display unit.
The radar stops transmission and the antenna stops rotating.
Maintain the standby state if radar observation is restarted in a relatively short time.
Only pressing the [TX/PRF] key starts observation.
Power Off
1 Press the [STBY] key and the [TX/PRF] key simultaneously.
The system is turned off.
When conducting maintenance work, make sure to turn off the
power and unplug the power connector J1 of the display unit so
that the power supply to the equipment is completely cut off.
Some equipment components can carry electrical current even
after the power switch is turned off, and conducting maintenance
work without unplugging the power connector may result in
electrocution, equipment failure, or accidents.
WARNING
Chapter 2 OPERATIONS
2.3 POWER ON/OFF
2
2-5

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