Testing involves the following tests: 1) Frequency sweep 300 to 3000 Hz 2) Roll off 500 to 2500 Hz with -2 to +8 range Request 300 to 3000 Hz with -3 to +12 range 1000 Hz tone loss -16, 1% in either direction 3) Signal to noise ratio 24 Db level 4) White noise C message Dbrnco 5) Envelope delay measurement 6) Phase jitter not to exceed 10% 7) Impulse noise
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