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8.2.8 BACKING UP THE NON-VOLATILE MEMORY
Method for backing up to a file, and restoring from a file the contents of the non-volatile
memory of the tuner using a computer connected through the amplifier RS232 port
(using the "ACOM TERMINAL S" program, freely distributed).
8.2.9 CABLE REQUIRED FROM THE RADIO STATION
A single cable is required from the radio station to the tuner. Along with the RF power,
the coaxial cable from the ACOM amplifier to the tuner combines also the DC power
supply of +26VDC and the 60 kHz FSK data for bidirectional control. Note the
type and maximum cable length as per S. 8.1.10.
8.2.10 PROTECTION MECHANISMS
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From too high or too low power supply voltage (22 to 30VDC);
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From power supply voltage with reverse polarity;
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From excessive RF voltage at the antenna output (above 500Vrms);
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From excessive RF current at the antenna output (above 10Arms);
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From excessive reflected power at the antenna output (above 400W);
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From excessive forward power at the antenna output (above 1600W);
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From excessive input power during tuning (above 60W);
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From relay switching under RF power (hot switching);
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From extreme air temperatures within the internal volume of the tuner (-40...
+65oC / -40...+150oF);
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From accumulation of atmospheric electricity and lightning strike close to the
antenna – by a leakage resistor and lightning arrestor in the circuit of the oper-
ating antenna and direct grounding of the unused antennas;
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When the power supply is turned off, all antennas are automatically grounded.
8.3 STORAGE AND TRANSPORTATION
8.3.1 DIMENSIONS AND MASS AT STORAGE AND TRANSPORTATION
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width 457mm (18");
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depth 406mm (16");
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height 254mm (10");
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mass 8.15kg (18lbs).
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