Koden MDC-5204, Installation Manual

Page: 9 / 182

MDC-5200/5500 Series Preface
0092655002-03 1
Preface
[Precaution for safety issues]
Precaution for operation
• Caution about rotating antenna:
The radar antenna may start rotating without notice. Please keep away from the antenna for your
safety.
• Caution about health risks caused by radio wave:
Powerful electromagnetic waves are emitted from the antenna during operation. These waves can
cause ill effects on human bodies when exposed to continuous radiation.
International criteria
Though the international regulation states that the electromagnetic waves with a high-frequency
power density of not more than 100 W/m
2
do not have an ill effect on human bodies, medical
devices such as a pace makers are sensitive to electromagnetic waves with minute electric power
and their operation may become unstable. In any event, any person with such a device must keep
away from electromagnetic sources.
Specified power density and distance from antennas (according to the
provision as specified in IEC 60945)
Transmission power / antenna
length
100 W/m
2
50W/m
2
10 W/m
2
4 kW / 3 feet antenna 0.9 m 1.3 m
m
2.8 m
M
4 kW / 4 feet antenna 1.0 m 1.4 m 3.1 m
4 kW / 6 feet antenna 1.2 m 1.7 m 3.7 m
6 kW / 4 feet antenna 1.5 m 2.1 m 4.5 m
6 kW / 6 feet antenna 1.7 m 2.4 m 5.4 m
12 kW / 4 feet antenna 2.1 m 2.9 m 6.4 m
12 kW / 6 feet antenna 2.4 m 3.4 m 7.6 m
12 kW / 9 feet antenna 2.9 m 4.1 m 9.0 m
25 kW / 4 feet antenna 2.9 m 4.1 m 9.2 m
25 kW / 6 feet antenna 3.5 m 4.9 m 10.9 m
25 kW / 9 feet antenna 4.1 m 5.8 m 13.0 m
• Caution about dangerous internal high voltage in the device:
High voltage that may cause risk of life is present in the Antenna unit and the Display unit of this radar.
This high voltage can remain in the circuit after the switch has been turned off. The high-voltage circuit
has a protective cover with a label “Caution against high voltage” so that no one will accidentally touch
it. Please ensure for your safety that the power switch is turned off and residual voltage in the capacitor