Yaesu FT-902DM Instruction Manual page 43

DC-DC CONVERTER
The optional D C-DC converter is easy to install in
a matter of minutes. Please follow the instructions
c are fully , in order t o m ake the proper connections .
( 1 ) Install the DC-DC converter m odule as shown
in the drawing. Use the four screws supplied
with the kit . D o n o t force the plug into the
socke t , as the connection should be sm ooth.
( 2) Check the DC cable fuse socket, locat e d in
the positive (red) lead, to be certain that a
2 0 amp fuse is installed.
When m aking connections to the battery, be
( 3 )
a bsolutely certain that the proper polarit y is
observed. The RED lead should be connected
to the POSITIVE
the B LACK lead should b e connected to the
NEGATIVE ( - ) terminal. OUR WARRANTY
DOES NOT COVE R DAMAGE CAUSED
REVE RSED POLARITY
Bla c k
F use
" '
B l a c k
INSTALLATION
(+)
battery term inal, and
B Y
CONNECTIO N S .
Red
( 4) B e fore connecting the D C power cable to the
transceiver, check the automobile voltage
regulator level with the engine running ( ba t­
tery charging) . Th e m aximum charging rate
should be 1
h igher than this level , please adjust th e voltage
regulator for a m aximum of 1 5 volts. This
p re caution applies, as well, to bench p ower
supplies , which should b e adjuste d in the
same fashion. Also, the transceiver should not
be operated from a supply voltage o f less than
1 2 volts.
( 5 ) Connect the DC cable to the transceiver.
Power connections are made automatically
when the DC cable is connecte d to the
POWE R jack.
Fuse holder
- 4 1 -
5 volts or less. If the voltage is
( + )
Red
( - )
Black