Studio Technologies 85 - Manual (Page 8)

Issue 4, June 2011 Model 85 User Guide
Page 8 Studio Technologies, Inc.
The Model 85 uses an IEC standard con-
nector to mate with the AC mains cord.
The wire colors in the AC mains cord
should conform to the internationally rec-
ognized 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 85 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 discon-
nection of mains power should it prove
necessary.
As soon as AC mains power is connected,
the Model 85’s power present LED will
light. If a digital signal is active on an input
its associated signal present LED will light.
The unit is now ready for years of trusty
service!
Configuration
Output Source Selection
Each of the eight AES/EBU outputs is
individually configurable to have input A
or input B as its source. Eight DIP-type
switches, located on the right side of the
front panel, are used to select the source
for each output. The legend on the switch-
es corresponds to the output channel num-
bers. A switch that is set to the up position
sets its associated output channel for a
source of input A. A switch in the down
position selects input B. A small flat-blade
screwdriver may be of assistance when
setting the switches.
Operation
Now that you’ve installed and configured
the system, you’re ready to go. You should
find operation very easy; there is almost
nothing to do on a day-to-day basis. For
peace of mind, the signal present LEDs
will give you a visual indication whenever
signals are present on the Model 85’s
inputs. Note that the signal present LEDs
are not intended to provide an indication
that valid AES/EBU signals are pres-
ent. They are provided as a handy macro
method of determining if signals are active
on the inputs.
Each of the eight outputs is fully indepen-
dent. You can patch, reconnect, or even
short out an interconnecting cable without
effecting the other outputs. Using the front-
panel DIP switches you can change the
output source of any or all of the outputs
whenever you wish.
Troubleshooting
If you’re having problems getting the
Model 85 up and running, this section can
help. If you haven’t read the other sec-
tions of this guide, you should do so before
proceeding.
If the Model 85 Doesn’t Work At All
A source of AC mains power must be
connected to the Model 85. Depending
on the version you have purchased, 100,