Connec�ng the XPA125B Amplifier to the G90/S (Op�onal)
The G90/S connects to the XPA125B power amplifier using the CE-19 adapter.
The XPA-125B’s antenna tuner is rated for full power output from the
amplifier (at least 100w).
Once connected, the G90/S can automa�cally control the band switching of
the XPA125B. The transmit ALC connec�on is also handled via the CE-19
adapter. If the G90/S output power exceeds the maximum input power to the
XPA125B , the ALC control automa�cally decreases the G90/S’s output power
to avoid over-driving the amplifier.
Schema�c Diagram of Wiring for G90/S Data Communica�on
Le� side
of the
computer
Insert into the
communica�on port
on the head unit.
XIEGU general data wire
Insert the cable to
the computer audio
Input / output port(s)
Insert into
the USB
port of
the
computer
8-core ACC connec�ng line
The wiring of the 3.5mm sockets are shown on the CE-19 board.
The port labelled X5105 is also for the G90/S and accepts the 8-core
cable from the ACC port of the radio.
The audio cable is connected as
follows:
AF_OUT: to PC Audio input.
AF_IN: from PC audio output.
Schema�c Diagram of Wiring between G90 and XPA125B
G90S
CE-19
XPA125B
ACC interface
8-core wire
6-core wire
TO XPA125
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