HP Visualize b132L Technical Reference Manual page 14

Frequency Response
Input Sensitivity/Impedance
Line in
Microphone
Max Output Level/Impedance
Line Out
Headphone
Speaker (internal)
Speaker (external jack)
Output Impedence
Line Out
Headphone
Speaker (external jack)
Signal to Noise*
Line Out
Headphone
Speaker
Line in
Microphone
THD (w nominal load)
Line Out
Headphone
Speaker
Line in
Microphone
* To convert from dB to number of significant bits use the formula:
For example, for 61dB S/N then n= 61/6
significant bits, or in other words, about 6 bits of noise.
PS/2 Keyboard and Mouse Interfaces
The PS/2 connectors provide an interface for the PS/2 style keyboard and mouse to the system.
HP Parallel I/O Interface
The 25–pin HP Parallel I/O interface uses Centronics interface protocols to support peripheral
devices such as printers and plotters. Consult the documentation that accompanies each peripheral
device for specific information concerning its use.
General Information
Hewlett–Packard Preliminary and Confidential
Table 1–2. Audio Electrical Specifications
25–20,000Hz
2.0Vpk/47kohm
22mVpk/1kohm
2.8Vpp/47kohm
2.75Vpp/50ohm
5.88Vpp/48ohm
4.2Vpp/8ohm
619ohm
118ohm
11ohm
65dB
61dB
63dB
61dB
57dB
–73dB
–70dB
–68dB
–75dB
–73dB
n = dB dB
.
20 log
6
10
10