HP Visualize J5000 hp Visualize J5000, J7000 workstations service handbook (a4 - Page 28

Table 1-5.

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D Audio Inputs D Audio Outputs D Audio CODEC Line-in Mono microphone compatible with 1.5V phantom supply (bias voltage supplied by the system) CD-ROM audio (if internal CD-ROM is installed) Line-out Headphone Mono speaker jacks Built-in mono speaker Crystal CS4215 The audio electrical specifications for this workstation are summarized in Table 1-5. Table 1-5. Audio Electrical Specifications Frequency Response Input Sensitivity/Impedance Line in Microphone Max Output Level/Impedance Line Out Headphone Speaker (internal) Output Impedence Line Out Headphone Signal to Noise* Line Out Headphone Speaker Line in Microphone THD (w nominal load) Line Out Headphone Speaker Line in Microphone 25-20,000Hz 2.0Vpk/47kohm 22mVpk/1kohm 2.8Vpp/47kohm 2.75Vpp/50ohm 5.88Vpp/48ohm 619ohm 118ohm 65dB 61dB 63dB 61dB 57dB -73dB -70dB -68dB -75dB -73dB * To convert from dB to number of significant bits use the formula: n = dB  dB . For example, for 61dB S/N then n= 61/6 20 log 10 6 significant bits, or in other words, about 6 bits of noise. ~~  10 1-14 Product Information

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1–14
Product Information
D
Audio Inputs
Line-in
Mono microphone compatible with 1.5V phantom supply
(bias voltage supplied by the system)
CD-ROM audio (if internal CD-ROM is installed)
D
Audio Outputs
Line-out
Headphone
Mono speaker jacks
Built-in mono speaker
D
Audio CODEC
Crystal CS4215
The
audio electrical specifications for this workstation are summarized in Table 1–5.
Table 1–5.
Audio Electrical Specifications
Frequency Response
25–20,000Hz
Input Sensitivity/Impedance
Line in
2.0Vpk/47kohm
Microphone
22mVpk/1kohm
Line Out
2.8Vpp/47kohm
Headphone
2.75Vpp/50ohm
Speaker (internal)
5.88Vpp/48ohm
Max Output Level/Impedance
Output Impedence
Line Out
Headphone
Speaker
Line in
Microphone
Line Out
Headphone
Speaker
Line in
Microphone
Line Out
Headphone
619ohm
118ohm
Signal to Noise*
65dB
61dB
63dB
61dB
57dB
THD (w nominal load)
–73dB
–70dB
–68dB
–75dB
–73dB
* To convert from dB to number of significant bits use the formula:
n =
dB
20 log
10
dB
6
.
For example, for 61dB S/N then n= 61/6
significant bits, or in other words, about 6 bits of noise.
~
~
10
±
±