Owner`s manual
INTERFACING 
The 
Source 
communicates 
with 
the 
outside 
world 
through 
its 
rear 
panel 
connections. 
The 
audio 
output 
has 
already 
been 
discussed; 
without 
it, 
no 
signals 
can 
be 
heard. 
The 
remaining 
jacks 
send 
control 
signals 
to 
and 
from 
The 
Source. 
Communication 
between 
electronic 
devices 
is 
called 
interfacing. 
The 
audio 
connection 
between 
The 
Source 
and 
an 
amplifier 
is 
a 
very 
simple 
interface; 
more 
sophisticated 
interfaces 
will 
allow 
The 
Source 
to 
control, 
or be 
controlled 
by, 
other 
synthesizers. 
OUTPUTS 
Control 
Voltage 
Out 
The 
control 
voltage 
(CV) 
in/out 
is 
a 
dual 
function 
jack 
that 
sends 
and/or 
receives 
control 
voltages, 
depending 
on 
the 
plug 
used. 
When 
used 
as 
an 
output, 
the 
CV 
jack 
outputs 
all 
control 
voltages 
generated 
by 
The 
Source 
(except 
the 
two 
contour 
generators). 
This 
includes 
the 
keyboard, 
LFO, 
pitch 
wheel, 
both 
sequences, 
arpeggiator, 
and 
sample and 
hold. 
The 
voltage 
at 
the 
CV 
output 
is 
intentionally 
scaled 
high 
to 
allow 
for 
discrepancies 
in 
other 
synthesizers. 
The 
output 
voltage 
may 
have 
to 
be 
run 
through 
a 
10K 
linear 
potentiometer 
to 
achieve 
1.00 
volts/octave. 
Trigger 
Out 
Used 
as 
an 
output, 
the 
trigger 
in/out 
jack 
generates 
an 
S-Trig 
(switch 
trigger 
— 
a 
short 
to 
ground) 
when 
a 
trigger 
is 
generated 
in 
The 
Source. 
This 
occurs 
when: 
1. 
A 
new 
key 
is 
depressed 
in 
the 
multiple-trigger 
mode, 
or 
all 
keys 
are 
released 
and 
a 
new 
key 
(or 
keys) 
is 
depressed 
in 
the 
single-trigger 
mode. 
2. 
The 
sequencer 
generates 
a 
trigger. 
3. 
The 
arpeggiator 
is 
running. 
4. 
The 
Auto 
Trig 
is 
active. 
5. 
The 
sample 
and 
hold 
is 
running. 
Note: 
If 
the 
Level 
2 
[S3S3S 
(Pr°£ram 
13) 
is 
set 
to 
OFF, 
all 
external 
triggers 
are 
defeated. 
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