Power Computing PowerBase Low-Profile, User Manual

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Technical Information
108
PowerCenter Pro User’s Guide
For Technical Support, Call 1-800-708-6227
Video
■
Built-in high performance EDO RAM video with hardware 2D/3D
acceleration
■
Horizontal refresh rate up to 75 Hz
■
On-the-fly resolution switching
■
2 MB EDO RAM standard video
■
4 MB EDO RAM video riser card available from Power Computing as an
option
■
3 PCI slots available for enhanced-performance cards
Audio system
■
Stereo sound generator capable of driving stereo mini-plug headphones or
audio equipment
■
CD-quality 16-bit stereo, 44.1 kHz sample rate, input and output
■
Sample rates of 44.1 kHz, 22.05, and 11.025 kHz
■
Input line level: 2 volts peak-to-peak nominal into 6.5 k
Ω
■
Input through output signal-to-noise ratio: >86 decibels (dB) with no
audible discrete tones
■
Bandwidth: 10 Hz – 19 kHz (+/– 2 dB) at 44.1 kHz sample rate
■
Total harmonic distortion plus noise: Less than 0.06%, measured 30 Hz –
60 kHz with a 2 V p-p sine wave input
Interfaces
■
Dual SCSI bus support with an internal UltraSCSI bus (20 MB/sec) and
Conventional SCSI bus (5 MB/sec)
■
Internal UltraSCSI bus supporting up to two internal devices in Minitower
enclosure and one internal device in Low-Profile enclosure
■
Conventional SCSI bus available for both internal and external devices
with a maximum of seven devices supported
■
One Apple Desktop Bus (ADB) port for up to three input devices daisy-
chained through a low-speed, synchronous serial bus
■
Three PCI bus expansion card slots, one occupied by the 20 MB/sec
UltraSCSI card
B Specs Page 108 Friday, June 6, 1997 10:17 AM