Ground Connection; Power Source - Icom IC-M710 Instruction Manual

18
7
CONNECTIONS AND INSTALLATION
• Ground connection
The transceiver and antenna tuner MUST have an
adequate ground connection. Otherwise, the overall
efficiency of the transceiver and antenna tuner in-
stallation will be reduced. Electrolysis, electrical
shocks and interference from other equipment could
also occur.
For best results, use the heaviest gauge wire or
strap available and make the connection as short as
possible. Ground the transceiver and antenna tuner
to one ground point, otherwise voltage differences
between 2 ground points may cause electrolysis.
~
CAUTION:
The IC-M710 has either a negative
~
ground or floating ground depending on version.
~
NEVER connect the negative ground type to a
~
"plus-grounding ship" otherwise the transceiver
~
will not function.
• Ground system example
ro1
]~+<Rl
Tnnnoononnnonn
lt
ooQJIQQ
9~
•
Transceiver
• Good ground points
- Ship's ground terminal
- External ground plate
- External copper screen
• Acceptable ground points
- Stainless steel tuna tower
- Stainless steel stanchion
- Through mast
- Through hull
- Metal water tank
• Undesirable ground points
(these points may cause noise or electrolysis)
- Engine block
-Keel bolt
• Unusable points
(these connection may cause an explosion or
electrical shock)
- Gas or electrical pipe
-Fuel tank
- Oil-catch pan
r------'ljl
:n
J
J
~
l' - ----------,
Optional AT-130/E
Copper pipe
Metal object
• Power source
The transceiver requires regulated DC power of 13.6
V and at least 30 A. There are 3 ways to supply
power:
- Direct connection to a 12 V battery in your ship
through the supplied DC power cable.
- Use the PS-60 DC POWER SUPPLY to connect to
an AC outlet.
- Use the PS-66 DC-DC CONVERTER to connect to a
19-32 V DC power source.
%
~
CAUTION:
The supplied DC power cable
~
MUST be used to provide power to the trans-
~
ceiver. AVOID exceeding the 3m (10ft.) length
~
of the DC power cable. If it is necessary to make
~
a run of over 3 m, use #6 or similar cable instead
~ of the supplied DC power cable for a maximum
~
run of 6 m (20ft.)
Copper screen
• DC power cable connection
~
NOTE:
Use terminals for
~
the cable connection.
c;p
or
~Solder
w