System Overview

 

System Unit Rear Panel Connectors

 

The audio electrical specification for this workstation are summarized in

 

Table 1.

Table 1

Audio Electrical Specifications

Frequency Response

25-20,000 Hz

Input Sensitivity/Impedance

 

Line In

2.0Vpk/47k ohm

Microphone

22mVpk/1k ohm

 

 

Max Output Level/Impedance

 

Line Out

2.8Vpp/47k ohm

Headphone

2.75Vpp/50 ohm

Speaker (internal)

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

≈

dB

-[---20------log---------10------]-

--6----

 

 

 

 

For example, for 61dB S/N then n=61/6 or approx. 10 significant bits, or in other words, about 6 bits of noise.

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