Alesis QS Series Service Manual page 93

PC Personal Computer generically. IBM style specifically as used here.
PCMCIA Personal Computer Multi Card Interface Adapter. A manufacturer's standard for
computer interfaces. Used by the QS series for RAM and ROM sound cards.
PUP Power UP
PUP Mute A circuit which eliminates noise during the power up/down cycle when transients
of the outputs can cause damage to equipment further along in the audio chain.
Q8 The latest generation of Alesis Keyboard Synths with an improved PC Serial
interface and piano weighted keys
R.F.I. Radio Frequency Interference
Rail A positive or negative regulated power supply line.
RAM Random Access Memory
ROM Read Only Memory
S4 Alesis' original Rack Mount Version of the QuadraSynth.
S5 Alesis' original QuadraSynth Keyboard.
S6 Alesis' 2
action and the first direct PC serial connector.
S7 The latest generation of Alesis Keyboard Synths with an improved PC Serial
interface.
S8 Also known as the S4+, this significant upgrade added a more extensive sound
library, an improved user interface, as well as improved and expanded effects.
S9 Also known as the QuadraSynth+ or S5+, this significant upgrade added a more
extensive sound library, an improved user interface, as well as improved and
expanded effects.
SG Sound Generator
SRAM Static Random Access Memory
Strain Gauge A method of using changing resistance to electrically measure changing physical
pressure.
Sys-Ex System Exclusive. A method in MIDI for allowing instrument specific information to
be stored, manipulated, and retrieved by computer.
VCO Voltage Controlled Oscillator.
Velocity A measure of the force used to press a key. Also used to describe the volume of a
sound.
Alesis QS Series Keyboards Service Manual V1.00
nd
generation QS Keyboard. Smaller than the S5, it featured better key
84 11/19/06