Operating Procedure of Type C Resonating Inductor
3-30 72A-1230 Rev. F
July 22, 2005
NOTE When the telephone plug is not connected to the Coupling Box, the lower
terminal of the Coupling Capacitor is connected to the Test Set Guard
Circuit. When the telephone plug is inserted into the receptacle, the
Guard connection to the lower terminal of the Coupling Capacitor is
removed and ground is applied to the low end of the 600 Ohm resistor via
the barrel of the telephone plug.
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