Studio Technologies 43 - Manual (Page 6)

Model 43 User Guide Issue 1, July 2004
Studio Technologies, Inc. Page 7
circuit was developed by Studio Technolo-
gies 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 voltage
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.
Compatibility
The Model 43’s audio inputs are com-
patible 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
43’s audio inputs. The Model 43’s IFB
circuit allows virtually any 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 announcer
console units combine a variety of micro-
phone 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 IFB applications,
the Model 43 can be used to create a
high-performance stereo headphone cue
system. Line-level signals coming from
audio consoles, routing switchers, or off-air
receivers can be connected to the Model
43’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. The
Model 43’s IFB circuit will support up to six
Model 35 Talent Amplifiers.
Setup
In this section you will be unpacking and
reviewing the Model 43. For permanent
applications a specific location will be
selected. Audio input and IFB circuit output
connections will be made by way of 3-pin
XLR-type connectors. A 24 volt DC power
source will be connected by way of the
2.1 x 5.0 mm coaxial input power jack.
System Components
The shipping carton contains the Model
43 Interface, 24 volt DC power supply, and
associated user guide. For units shipped
to destinations in North America and Japan
the power supply will have a nominal AC
mains input of 120 volts. For other desti-
nations a power supply compatible with
220/240 volts will be included.
Locating the Model 43
The location selected for the Model 43
depends on how the unit is going to be
used. In a permanent application the unit
can be placed on a shelf that’s available
in an equipment room or rack cabinet.
For portable applications the unit can be
placed on most any table or available
surface. (The reality might be that the unit
is simply “tossed” in a convenient location