![](/images/backgrounds/3511/bg14b.png)
Specifications
11 - 3
•THD+N: < 0.005%, -20 dB FS input signal
•Common mode rejection ratio: <-61 dB, 20-20,000 Hz, no weighting
•Cross talk: <-110 dB, 20-20,000 Hz, 1 kHz, channel-to-channel
•Latency: Mic/Line inputs to outputs: 23 ms, AEC and NC processing
enabled
•Acoustic echo cancellation span: 200 ms
•Total cancellation: >65 dB
•Convergence rate: 40 dB/second
•Noise cancellation: 0-20 dB, software selectable
•Control inputs: contact closure
•Status outputs: open collector 60 V and 500 mA maximum total per
outputs
•All signal ground pins connected to chassis ground through low
impedance planes
Telco
•Input gain: -100 to +20 dB in 1 dB steps, software adjustable
•Nominal transmit level: 0 dBu in SoundStructure device yields -15 to -17
dBm to phone (country code dependent)
•Off hook loop current: 10 mA (minimum) to 120 mA (maximum)
•Output gain: -100 to +20 dB in 1 dB steps, software adjustable
•Frequency response: 250-3300 Hz
•Dynamic range: >70 dB FS, 250-3300 Hz, "A" weighted