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SYSTEM-500 Complete Set

Roland SYSTEM-500 Complete Set, SYSTEM-500 540 User guide

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  • What are the different types of waveform shapes outputted by the Roland SYSTEM-500's LFO?
    What are the parameters of the Roland SYSTEM-500's Envelope Generator?
    What is the function of the Roland SYSTEM-500's EXT jack?
    How do I start the envelope cycle on the Roland SYSTEM-500?
    What is the purpose of the Roland SYSTEM-500's KEY OFF switch?
About ENV (Envelope Generator) and LFO (Low Frequency Oscillator)
An envelope generator produces a time-varying voltage according to the attack (A), decay (D), sustain (S), and
release (R) settings; you can use this voltage to control the sound’s character or volume over time.
An LFO produces a cyclically changing voltage according to its settings; you can use this voltage to produce eects
such as vibrato or tremolo.
The Parameters of the 540
The 540 is a module containing two ENV (Envelope Generator) units that have the same parameters, and one LFO (Low Frequency Oscillator) unit.
A D
S
R
KEY ON
KEY OFF
Time
Voltage
(Volume)
540
WAVE FORM
These jacks output the LFO signal as pulse wave, triangle
wave, sawtooth wave, reverse sawtooth wave, and sine
wave.
EXT
If you want to turn the envelope generator on/o from
an external source, use this jack to input a gate signal.
MANUAL
Starting the envelope cycle.
Gate trigger switch
Starts the envelope cycle
and selects the external
signal that will control it.
EXT Trigger by EXT or MANUAL
CYCL
Self cycling by ATTACK
and DECAY setting
FREQ
Species the frequency of the LFO.
DELAY
Species the time from when an input signal is received
until the LFO starts operating.
KYBD TRIG
RESET LFO waveform by envelope 1 or 2.
CV FREQ
If you want to use an external source to control the LFO
frequency, input a voltage here.
FREQ RANGE
Selects the LFO oscillating frequency.
DELAY TRIG
RESET LFO DELAY trigger by envelope 1 or 2.
F/S switch
Switching the Envelope speed.
F Fast
S Slow
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01
ATTACK, DECAY, SUSTAIN, RELEASE sliders
These sliders specify attack time (the time over which the sound rises), decay
time (the time over which the sound decays), sustain level (the level that is
sustained after the envelope reaches the peak), and release time (the time
over which the sound disappears after the signal input ends).
Output jacks
These are output jacks. Outputting two positive
waveforms and one negative waveform.
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