A-A-55568/3C
Plug termination. The plug termination shall be a 6-wire PJ7 in accordance with drawing 182513 (CAGE 08125,
see -105, on sheets 12 and 13) or equivalent configuration.
Wiring diagram. The wiring diagram shall be as specified on figure 2.
Cable assemblies. The cable assemblies' lengths shall be as specified in table I.
Frequency range. The frequency range for the headset shall be 300 to 3300 Hz.
Electrical characteristics.
Receiver.
Output level. The receiver output level shall be 75.5 ± 4 dB SPL (12.6 mV rms through 600 ohms).
Distortion. Distortion for the headset shall be less than 5 percent.
Receiver impedance. The receiver impedance shall be 600 ohms nominal.
Microphone/amplifier.
Output level. The output level shall be - 22.5 dB V ± 4 dB V (47 to 119 mV rms).
(NOTE: All transmit measurements are made with 94 dB SPL drive at 1,000 Hz into a 50 ohm resistive load at
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100 mA dc. Also 0 dB m = 1 milliwatt; 0 dB SPL = 20 micropascal's (µPA) (0.0002 dynes/cm ); 0 dB V = 1 volt.)
DC resistance. The dc resistance shall be greater than 35 ohms.
Terminal voltage. Terminal voltage shall be 4.7 V dc at 100 mA.
Microphone impedance. Microphone impedance shall be 50 ohms nominal.
Polarity. The microphone/amplifier shall be nonpolar.
Marking. Headsets supplied to this CID shall be marked with the manufacturer's (MFR's) standard commercial PIN.
(NOTE: The part number marked on the unit pack shall be the CID PIN.)
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