5
1.2
Connecting the USI
The USI is delivered with three identical 9-pin straight-through serial cables. Use only
straight-through serial cables with the USI. Begin by connecting one of the serial cables to
the radio’s serial port (often labeled “CAT”). Then connect the free end of that cable to
either of the USI’s connectors marked “RADIO.”
Using the two remaining serial cables, connect the AT-AUTO
(
tm
)
to the connector marked
“AT-AUTO”, and the computer to the connector marked “COMPUTER.”
AT−AUTO Rear Panel
INPUT COAX
AUX CIV PORTS
TRANSCEIVER
DATA INPUT
BALANCED
OUT
OUTPUT COAX
Personal Computer
RS−232 DATA
INPUT
Universal Interface
"Normal" Serial Data Cables
Ant
CAT
Transceiver
OR
Figure 1.2: Universal Serial Interface Hookup Diagram
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