Studio Technologies 42 - Manual (Page 6)

Model 42 User Guide Issue 1, July 2004
Studio Technologies, Inc. Page 7
circuit topology, a unique IFB circuit was
developed by Studio Technologies to
achieve the desired performance goals.
The result is a major improvement in
effectively supporting IFB user devices
over a wide range of conditions. Con-
nected devices can draw up to the full
rated 200 milliamperes of current with
little drop in DC voltage. This output volt-
age stability is the key—whether drawing
50, 100, or 200 milliamperes, 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.
Compatibility
The Model 42 is compatible with virtually
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 42’s audio inputs.
With the Model 42’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 42 the intercom system’s audio
quality can be maintained all the way to
the IFB users.
The Model 42’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 Studio
Technologies. The 200-series units com-
bine 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 42 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 42’s audio inputs. The IFB circuits
can be connected to listen-only belt packs,
several models of which are available
from Studio Technologies. For example,
the Model 35 Talent Amplifier will allow
one or two pairs of stereo headphones to
be supported. Each of the four Model 42
IFB circuits will support up to six Model 35
Talent Amplifiers.
Installation
In this section you will be installing and
interconnecting the Model 42. The one-
rack-space unit will be mounted in an
equipment rack. Audio input connections
will be made by way of a 25-pin D-sub-
miniature connector. IFB circuits will be
interfaced using four 3-pin XLR-type
connectors. AC mains power is connected
by means of a detachable cord set that is
compatible with the Model 42’s 3-pin IEC
320 C14-type inlet connector.
System Components
The shipping carton contains the Model 42
Interface and associated user guide. Units
destined for North America and Japan
also include an AC mains cord. Your