Gates Radio Company Stereo Statesman Console M-6540C Instruction Book

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ADDENDUM
CAUTION - To prevent severe ground loops, all wiring connected to this console must
be free from ground c'onnections in the source and load equipment (microphones,
turntables, tape players, recorders, speakers, etc.). An ohmmeter check is necessary
to be certain that each wire is not grounded before connecting it to the console.
If any source or load equipment has a grounded connection wire, an isolating trans-
former must be used between that equipment and the console.
A final ohmmeter check is recommended: After all system connections are made,
temporarily disconnect the station ground from the console and measure the resistance
(ohms) from the console ground stud to the station ground. A very high resistance is
.
.
normal - a low reading indicates a ground loop. All ground loops must be eliminated
before operqting the console. Be sure to re-attach the station ground to the console
after testing.
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Gates Rudio Cornpany
Quincy, Illinois