Icom CY-F121S [13/21] In ac operation
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Icom CY-F121S [13/21] In ac operation

Icom CY-F121S [13/21] In ac operation
Make sure the [POWER] switch is turned OFF
when connecting an AC power cable or a backup
battery (emergency power supply).
The CY-F121S/221S series can operate with an
AC or DC power supply. If AC power is interrupted
when operating the repeater with an AC power
supply, power is automatically provided to the
[BATTERY] terminals.
NOTE:
rear panel switch, wait a few seconds before
turning it back ON. Otherwise, Logic circuits
may not sense the transition and operate
correctly.
In AC operation
• Use the supplied AC power cable for
connection to a domestic AC outlet.
• Extension cords should not be used unless
absolutely necessary. Using improper
extension cords could result in  re risk.
In DC operation
CAUTION:
Voltages greater than 16 V DC
will damage the repeater. Check the source
voltage before connecting the power cable.
•
DO NOT place the backup battery on or near
the repeater. Lead-acid batteries should be
placed at least 5 m (16.4 ft.) away from the
repeater. Use a heavy duty cable to make
the connection and be sure both the positive
(red) and negative (black) terminals are
correctly connected.
•
When connecting to the battery, connect the
DC power cable to the repeater  rst, then
the positive (red) terminal and negative
(black) terminal to the battery. This is to
prevent electric shock or circuit damage.
■
Power
INSTALLATION AND CONNECTIONS 2
10

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