Safety Instructions

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Remove the upper lid first. On the right side of the PA, there are two PCBs mounted. On the right upper
side is Switch ON board where AC selector is located.
There are AC selector for each transformer.
The blue wire – one side of primary winding
is conected to N pole. Wire marked with
proper voltage connect to L pole.
AC voltage is marked at every black
terminals.
AC selector range can be changed according to the specific conditions in individual countries.
Default settings is 220, 230, 240V / 50Hz for EU market and 230, 240, 250v / 60Hz for USA
market. If you need different settings in the range of 200 – 260V, this should be specified in the
order!
Manufacturer reserves the right to make future changes in the way of connecting the
transformer to the board. Allways mark the position of the terminals before disconnecting the
transformer.
7.2. Controlling the OM4001A with Flex Radios Series 6xxx
There are two possible methods to connect the Flex Radio series 6xxx to the OM4001A:
• Using the SmartSDR CAT program
• Using the USB connector at Flex 6xxx
Flex Radio 6xxx series connection using SmartSDR CAT
Choose the control port in the SmartSDR CAT window that you will use to control the power amplifier. It
must be an existing serial port – a hardware COM port in your PC or an USB to serial port adapter. Connect
the chosen COM port and the transceiver port ( TCVR DB9 )to the OM Power amplifier with a null modem
serial cable (both ends of the cable have a female DB-9 connector and pins 2 and 3 are crossed).
Type of supported TCVR and working
frequency are visible on the display.
AUTO LED is ON.