Studio Technologies 80 1999 - Manual (Page 12)

Issue 5, October 1999 Model 80 User Guide
Page 12 Studio Technologies, Inc.
• For practice, mess up the settings of
the level and right trim controls. Again
follow the calibration procedure and
again get things set up correctly.
• For future reference it may be helpful
to mark the correct input level and right
trim adjustment points. Use a grease
pencil or a piece of adhesive tape so
as not to damage the front panel.
• Disconnect the 1kHz signal and con-
nect the normal audio source.
Output Level Selection
Each of the eight stereo line-level outputs
is individually configurable for a –10 or
+4dBu nominal output level. Eight DIP-
type switches, located on the right side of
the front panel, are used to set the output
levels. The legend on the switches corre-
spond to the output channel numbers. A
switch that is set to the up position sets its
associated output channel for –10dBu. A
switch set to the down position sets the
output for +4dBu. A small screw driver
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, as there
is almost nothing to do on a day-to-day
basis. For peace of mind, the ExactCal
LEDs will give you a visual indication
whenever audio signals are present on
the Model 80’s input.
The LED labeled Lo will light whenever
the input signal is within the range of 18dB
below and 0.5dB above the nominal oper-
ating level. The LED labeled Hi will light
any time the input signal is greater than
0.5dB below the nominal operating level.
This sounds a bit confusing but isn’t really
so hard to understand. As an example, if
you have a nominal “+4” signal con-
nected to the Model 80’s line input and
the ExactCal section has been used to
calibrate the input, the Lo LED will light
when the signal is between –14 and
+4.5dBu, the Hi LED will light when the
signal exceeds –3.5dBu.
In most cases the input level control
shouldn’t be changed, as it will change
the input calibration. In special applica-
tions you may want to use it as a fader,
simultaneously adjusting the level on all
eight stereo outputs. In the fully counter-
clockwise position the eight outputs are
completely off. Before you use the level
control as a fader ensure that you mark
the position of the knob where the input
is calibrated.
If you change the input source you can
use the ExactCal section to recalibrate the
input. Refer to the configuration section of
this guide for details.
Each of the eight outputs are fully inde-
pendent. 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 level of any or all of
the outputs whenever you wish.
Troubleshooting
If you’re having problems getting the
Model 80 up and running, this section can
help. If you haven’t read the other sections
of this guide, you should do so before
proceeding.