Studio Technologies 220 2004 - Manual (Page 22)

Model 220 User Guide Issue 2, August 2004
Studio Technologies, Inc. Page 23
is important. This could occur when the
connected headset or headphones are at
times placed on a desk or tabletop.
Main Output Source
Switch SW4-4 is used to select which
audio source is routed to the main output.
The choices are the output of the micro-
phone preamplifier or the output of the
compressor circuit. For most on-air ap-
plications the output of the microphone
preamplifier is the desired source. This
will provide the most natural audio qual-
ity with the potential for a large amount of
dynamic range.
output operates vis-à-vis the talkback out-
puts. Understanding how the two modes
impact overall system operation will en-
sure that correct operation and maximum
usability will occur. When selected to the
on-air mode, the main output will mute
whenever either talkback output is active.
The LED indicators associated with the
main output will light accordingly. The on-
air mode should be selected for all on-air
broadcast applications. It’s imperative that
the main output be muted whenever on-air
talent uses one or both of the talkback
outputs to communicate with production
personnel.
When the system mode is set for pro-
duction, the main output is never muted
in response to a talkback output being
active. This mode allows the main output
Figure 16. System mode settings
Figure 15. Main output source settings
In some applications it may be desirable
for the output of the compressor circuit to
be routed to the main output. Appropriate
applications could include on-air broad-
cast situations where nonprofessional
talent is present. Controlling the dynamic
range of the audio signals on the main
output can limit the chance of cable cross-
talk and equipment overload. Another typi-
cal application where using the output of
the compressor would be when the Model
220’s system mode is selected for produc-
tion. In this case the main output would be
used as an additional talkback output and
dynamic range control could be beneficial.
System Mode
Switch SW4-8 is used to configure the
overall operating mode of the Model 220.
Specifically, it determines how the main
to be used, for example, as an additional
talkback output. In this way the main and
talkback outputs can be used indepen-
dently, with neither impacting the other.
This also allows all three buttons to be
used simultaneously. When selected for
the correct application, the production
mode can prove to be very useful. But it’s
not appropriate for on-air use!
Conclusion
Once the switches have been set to the
desired configuration, it may be time to
reattach the security plate. The exception
is if the trim pots associated with the line
inputs are going to be adjusted. Details