OM POWER OM4000A, Инструкция по эксплуатации

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KEY IN RCA Phono - Input signal PTT switching voltage / current 5V /2 mA)
KEY OUT RCA Phono - Output signal PTT (maximum switching of 30V / 50mA)
CI-V Mono 3.5mm Jack for connection of ICOM TCVRs or devices that provide
compatible CI-V protocol. Correct baud rate is important.
TCVR DB9 serial port RS232 for KENWOOD, YAESU and ELECRAFT TCVRs. Correct
baud rate and type is required for successful operation. If both CI-V and
TCVR cables are connected then CI-V disables RS232. Otherwise selection
of interface is done via TCVR type.
PC DB-9 RS232 port is used for communication with your PC. Please use
setting you would normally use if using direct TCVR – PC connection.
ALC RCA Phono – Automatic Level Control is used when tuning the PA to block
drive level.
BYPASS COM Connector (5.5/2.1mm) allows you to connect an external 12V DC power
supply (rated at 200mA max.), which allows independent communication
between the PC and the TCVR. It means the ability to communicate even
if the PA is turned OFF. External source is separated from the internal
supplying; this means that it can remain permanently connected to the PA.
CAUTION!
We only recommend using ALC feature while operating RTTY, FM and other 100% duty modes.