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System Unit Rear Panel Connectors
Built-in mono speaker
• Audio CODEC
Crystal CS4215
Table 4 summarizes the audio electrical specifications for the Model C160/
C180/C200/C240/C360 workstations.
Table 4 Audio Electrical Specifications
Frequency Response 25-20,000Hz
Input Sensitivity/Impedance
Line Out 2.0Vpk/47k ohm
Microphone 22mVpk/1k ohm
Max Output Level/Impedance
Line Out 2.8Vpp/47k ohm
Headphone 2.75Vpp/50 ohm
Speaker 5.88Vpp/48 ohm
Output Impedance
Line Out 619 ohm
Headphone 118 ohm
Signal to Noise
Line Out 65 dB
Headphone 61 dB
Speaker 63 dB
Line In 61 dB
Microphone 57 dB
THD (w nominal load)
Line Out -73 dB
Headphone -70 dB
Speaker -68 dB
Line In -75 dB
Microphone -73 dB
To convert from dB to number of significant bits, use the
formula: n=dB/20 log10 = dB/6. For example, for 61dB
S/N then n=61/6 10 significant bits, or in other words,
about 6 bits of noise.