Studio Technologies 220 2004 - Manual (Page 9)

Issue 2, August 2004 Model 220 User Guide
Page 10 Studio Technologies, Inc.
utilizes a ¼-inch 3-conductor jack. The ex-
ternal source of 24 volt DC power is con-
nected by way of a 2.1 x 5.0 mm “locking”
coaxial power jack.
In the world of broadcast and produc-
tion audio it’s fair to say that applications
vary widely. To this end, up to three addi-
tional XLR-type connectors can be easily
mounted into the Model 220’s back panel.
Multiple 3-position “headers” located on
the Model 220’s circuit board provide
technician-access to literally every input
and output connection. Using a factory-
available interface cable kit, these allow
a Model 220 to be optimized to meet the
exact needs of specific applications. For
example, some applications may prefer
to use a multi-pin XLR-type connector to
interface with a headset. This could be
easily accomplished by adding the appro-
priate 5-, 6-, or 7-pin XLR-type connector
and making a few simple connections.
Other applications may benefit from hav-
ing “mult” or “loop-through” connections,
something easily incorporated into a
Model 220.
Optional Direct Mic Output
In most cases the Model 220’s standard
resources are more than sufficient to sup-
port the desired application. But special
needs always seem to arise. To that end,
several optional cards are available. Each
card contains an integral 3-pin XLR-type
connector, allowing simple installation
into a spare connector position on the
Model 220’s back panel. The direct micro-
phone output card provides access to the
dynamic or condenser microphone that
is connected to the Model 220. Passive
components, along with the auxiliary relay
contact, create a “click-free” audio signal.
200-Series Announcer
Console Products
The Model 220 is just one in a series of
announcer console products available
from Studio Technologies. For applications
that require an alternate set of features the
other products in the 200-series should be
reviewed. Complete information is avail-
able on the Studio Technologies website.
Installation and
Setup
In this section interconnections will be
made using the input and output con-
nectors located on the Model 220’s back
panel. Microphone input, IFB input, line
input, main output, and talkback output
signals are interfaced by way of 3-pin XLR-
type connectors. A ¼-inch 3-conductor
phone jack is provided for the headphone
output. A 2.1 x 5.0 mm coaxial jack
allows connection of an external 24
volt DC power source.
System Components
Included in the shipping carton are the fol-
lowing: Model 220 Announcer’s Console,
user guide, button label sheet, and 24 volt
DC power supply. For units shipped to
destinations in Japan and North America
the power supply will have a nominal AC
mains input of 120 volts. For all other des-
tinations a power supply compatible with
220/240 volt AC mains will be included.
Microphone Input
The Model 220 is compatible with bal-
anced dynamic and condenser micro-
phones. Depending on the application,
the microphone may be part of a headset,