1-14
Table 1–1 summarizes the audio electrical specifications for this workstation.
Table 1–1. 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 Impedance
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
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.
Содержание Visualize J280 - Workstation
Страница 1: ...J 280 Owner s Guide Workstation Systems Group HP Part No A2876 90013 Edition E1196 Printed in U S A ...
Страница 3: ...xii ...
Страница 8: ...xiii Preface ...
Страница 22: ...1 9 Removable Device Bays 2 Figure 1 3 System Unit with Removable Device Door Open ...
Страница 44: ...2 8 5 Gently push the disc tray in until it is closed as shown in Figure 2 4 Figure 2 4 Disc Tray Closed ...
Страница 106: ...A 2 ...
Страница 133: ...B 23 ÅÅ ÅÅ ÅÅ ÅÅ Top View of Floppy Disk Drive 1 2 3 SCSI Terminators Figure B 12 Floppy Drive Terminators ...
Страница 139: ...B 29 6 5 4 3 2 1 0 15 14 13 12 11 10 9 8 Figure B 16 Fast Wide Hard Drive Jumper Settings ...
Страница 140: ...B 30 PCB Side of Drive Top Drive Bottom Drive Figure B 17 Replacing Hard Drive Mounting Bracket and Drive Orientation ...
Страница 153: ...B 43 Figure B 25 Replacing the CPU Assembly ...
Страница 168: ...B 58 7 Insert cover in guide and secure with screw Refer to Figure B 38 Figure B 38 Replacing EISA Assembly Cover ...
Страница 172: ...B 62 ...
Страница 194: ...C 22 Figure C 1 Rear Panel SCSI Connectors with Terminators Attached ...
Страница 236: ... ...