Studio Technologies 591 - Manual (Page 13)

Issue 1, September 1999 Model 58/591 User Guide
Page 16 Studio Technologies, Inc.
Connecting the Model 591 to
the Model 58
A cable with 9-pin D-sub plugs (males)
on each end is used to interconnect the
Model 591 Control Console with the Model
58 Central Controller. A 20-foot (6.1m)
cable is provided with each Model 58/
Model 591 system. Connect one plug to
the Model 58 connector labeled “To/From
Control Console,” the other plug to the
Model 591.
Should a cable of different length be
required it should be wired in a one-to-one
fashion for all 9 pins. Pin 1 carries power
supply common, and must be intercon-
nected using a conductor. A cable shield
connection should be connected to pin 1
at one, or both, ends.
For best performance the cable generally
should not exceed 50 feet (15.3m) in
length. The reality is that a cable much
longer in length should work, as long as
an excellent-quality cable is utilized. We
define “excellent” as extensive shielding
along with very low capacitance. The low
cable capacitance limits the amount of
data-signal waveform distortion. As far
as the maximum length, go ahead and
try it—if it works, it works!
AC Mains Power
The Model 58 is internally configured to
operate from either 100, 120, or 220/240V,
50/60Hz. Units shipped to North America
are factory selected for 120V operation.
Units bound for Japan are selected for
100V, while our friends “down under” and
in Europe receive units set for 220/240V.
Before connecting the Model 58 to mains
power, check that it is configured to match
the local mains voltage. Look on the back
panel (adjacent to the power entry connec-
tor) for the configured voltage(s). Note
than an incorrect configuration could
seriously damage the unit. Should it be
necessary to change the unit’s operating
voltage it must be performed only at
the factory or by an authorized service
technician.
The Model 58 uses an IEC standard
connector to mate with the AC mains
cord. The wire colors in the AC mains
cord should conform to the internationally
recognized CEE color code and must
be wired accordingly:
Connection Wire Color
Neutral (N) Light Blue
Line (L) Brown
Protective Earth (E) Green/Yellow
Safety Warning: The Model 58 does
not contain an AC mains disconnect
switch. As such, the mains cord plug
serves as the disconnection device.
Safety consideration requires that the
plug and associated outlet be easily
accessible to allow rapid disconnect-
ion of mains power should it prove
necessary.
As soon as mains power is applied, the
power-present LED on the Model 58 will
light. The Model 591 will go through its
power-up sequence lighting each LED in
a rapid sequence.
Note that any time one of the Model 58’s
configuration DIP switches is changed,
mains power must be disconnected and
reconnected. This ensures that the logic
circuitry is fully reset to match the new
operating parameters. (This is not a bug
in software—we designed it this way to