Studio Technologies 82 - Manual (Page 11)

Model 82 User Guide Issue 1, January 2000
Studio Technologies, Inc. Page 11
The LED labeled Lo will light first, then
both LEDs will light, then only the LED
labeled Hi will light. The correct setting
is where both LEDs light their brightest.
Careful adjustment is required as the
“window” where both LEDs light is
somewhat less than 1dB.
• Repeat the above procedure for the
trim pot and LEDs associated with
the right input. When the configuration
is correct both LEDs associated with
the right channel input will be lit to their
brightest.
• Disconnect the 1kHz signal and con-
nect the normal audio source.
Output Level Selection
Each of the four stereo line-level outputs
is individually configurable for a –10dBV
or +4dBu nominal output level. Four 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 its up position config-
ures its associated output channel for
–10dBV. A switch set to its down position
configures 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 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 82’s
input.
The LEDs labeled Lo will light whenever
an input signal is within the range of 18dB
below and 0.5dB above the nominal oper-
ating level. The LEDs labeled Hi will light
any time an 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 82’s line input and
the ExactCal section has been used to
calibrate the input, the Lo LEDs will light
whenever the signal is between –14 and
+4.5dBu, the Hi LEDs will light whenever
the signal exceeds –3.5dBu.
The four outputs are fully independent.
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.
Remember that if you change the input
source you may need to use the ExactCal
section to recalibrate the input. Refer to
the configuration section of this guide for
details.
Troubleshooting
If you’re having problems getting the
Model 82 up and running, this section can
help. If you haven’t read the other sections
of this guide, you should do so before
proceeding.
If the Model 82 Doesn’t Work At All
A source of AC mains power must be
connected to the Model 82. Depending on
the version you have purchased, 100, 120,
or 220-240Vac, 50/60Hz is required. Con-
firm what mains voltage is required by