Download HP Visualize J280 - Workstation Technical data

Table 1–1 summarizes the audio electrical specifications for this workstation.
Table 1–1. Audio Electrical Specifications
Frequency Response
Input Sensitivity/Impedance
Line in
Microphone
25–20,000Hz
2.0Vpk/47kohm
22mVpk/1kohm
Max Output Level/Impedance
Line Out
Headphone
Speaker (internal)
2.8Vpp/47kohm
2.75Vpp/50ohm
5.88Vpp/48ohm
Output Impedance
Line Out
Headphone
619ohm
118ohm
Signal to Noise Line Out
Headphone
Speaker
Line In
Microphone
THD (w/nominal load)
Line Out
Headphone
Speaker
Line In
Microphone
65dB
61dB
63dB
61dB
57dB
–73dB
–70dB
–68dB
–75dB
–73dB
~
To convert from dB to number of significant bits, use the formula:
dB .
n = dB
20 log
6
For example, for 61dB S/N then n= 61/6 10
10
significant bits, or in other words, about 6 bits of noise.
Keyboard Connectors
PS/2 Keyboard Connectors
The PS/2 connectors provide an interface for the keyboard and mouse
to the system. Consult the documentation that accompanies each input
device for specific information concerning its use.
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