Compatibility, Alternate applications – Studio Technologies 41 2004 User Manual
Page 6
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Model 41 User Guide
Issue 1, October 2004
Studio Technologies, Inc.
Page 7
supporting IFB user devices over a wide
range of conditions. Connected devices
can draw up to the full rated 200 milli-
amperes of current with little drop in DC
voltage. This output voltage stability is the
key—whether drawing 50, 100, or 200 mil-
liamperes, the output will remain close to
30 volts. In practical terms this means that
reliable IFB-based cue systems can now
be deployed in more stadiums, concert
halls, or motor racing facilities than was
previously possible; longer cable runs,
more user devices, excellent performance.
Monitor Section
To help ensure proper installation and
operation, the Model 41 includes a sophis-
ticated monitor section. Two 5-segment
LED meters provide an indication of the
IFB audio levels as they appear directly on
the output connectors. This unique feature
makes it simple to adjust and maintain the
correct level of the audio sources so as to
provide optimal IFB performance. A head-
phone output is also provided, allowing
“real world” checking of IFB audio quality.
In addition to being able to manually
select the IFB circuit to be monitored by
the meters and headphones, an “auto
scan” mode is included. This allows each
of the four IFB circuits to be monitored in
a continuously repeating sequence.
The DC output voltage present on pin 2
of each IFB circuit is also monitored. Four
LED indicators, one for each IFB circuit,
will “flash” if the voltage on its associ-
ated IFB circuit falls below the acceptable
value. Over-current or short-circuit condi-
tions will no longer fall “below the radar,”
causing problems for IFB device users
with little chance of early detection.
Compatibility
The Model 41 is compatible with virtu-
ally every digital matrix intercom system,
including those from Clear-Com®, Drake,
RTS™, and Riedel Communications.
Interfacing requires only the connection
of analog output ports from the intercom
system to the Model 41’s audio inputs.
With the Model 41’s excellent audio and
power delivery performance it’s an ideal
alternative to the interface devices offered
by the intercom system vendors. Using
the Model 41 the intercom system’s audio
quality can be maintained all the way to
the IFB users.
The Model 41’s IFB circuits allow virtually
every IFB user device to be supported.
These include the Model 30-series listen-
only belt packs and Model 200-series
announcer console products from Stu-
dio Technologies. The 200-series units
combine a variety of microphone control,
headphone monitoring, IFB and intercom
system interfacing, and related functions
into compact desktop units. Industry-
standard listen-only belt packs from RTS,
including the 4020 and 4030, can also be
directly supported.
Alternate Applications
In addition to broadcast intercom applica-
tions, the Model 41 can be used to create
high-performance stereo headphone cue
systems. Stereo line-level signals coming
from audio consoles, routing switchers,
or off-air receivers can be connected to
the Model 41’s audio inputs. The IFB cir-
cuits can be connected to listen-only belt
packs, several models of which are avail-
able from Studio Technologies. For exam-
ple, the Model 35 Talent Amplifier will allow
one or two pairs of stereo headphones to