Studio Technologies IFB Plus 2007 - Manual (Page 9)

Model 2 User Guide Issue 9, January 2006
Studio Technologies, Inc. Page 9
Model 22 Access Stations are linked to the
Model 2 Central Controller via 9-pin D-type
female connectors. Each access station
contains two connectors, allowing a simple
daisy-chain installation. The nine leads carry
all signals; audio, control, status lamp (tally),
and power. The Model 2 provides all power
required by the access stations. The Model
25A 19-Inch Rack Adapter is available to
mount a Model 22 and a Model 11A Goose-
neck Microphone in one space of a 19-inch
rack. The Model 28A Panel Adapter allows
a Model 22 and a Model 11A Gooseneck
Microphone to be mounted in a panel
opening.
Model 24 Access Station
The Model 24 is similar to the Model 22 with
the exception that it works with two Model 2
units. In this way production personnel can
access all four of the IFB channels associ-
ated with the two Model 2 units. Up to four
Model 24s can be connected to each Model
2. A Model 24 unit consists of a metal chas-
sis that holds the audio and control circuitry,
microphone and line input connectors, and
five lighted pushbutton switches.
Each of the four IFB channel pushbutton
switches display when an interrupt is taking
place on its respective channel. A fifth but-
ton is specified as “all call” and lights when
pressed. The Model 2 supports connection
of a Model 11A Gooseneck Microphone or
a line-level signal. The latter is transformer-
balanced, allowing compatibility with virtu-
ally any line-level source. A switch is used
to selection the interrupt audio source. A
second switch allows the Model 24 to mute
the monitor output on each of the Model 2
units whenever an IFB channel is activated.
Model 24 Access Stations connect to the
Model 2 units using two 9-pin D-submin-
iature connectors. The nine conductors
that link each Model 2 with the Model 24
support all the audio, signaling, and power
requirements. No external power source is
required. The Model 27A allows a Model 24,
along with a Model 11A Gooseneck Micro-
phone, to be mounted in one space of a
standard 19-inch rack enclosure.
Model 32A and Model 33 Talent
Amplifiers
The Model 32A and Model 33 Talent Ampli-
fiers are self-contained “belt pack” units that
drive talent earpieces or headsets. A single
3-conductor microphone-type cable links
the Model 2 with the talent amplifiers. Each
Model 32A and Model 33 contains both a
male and female XLR-type connector, al-
lowing simple “loop through” connection of
multiple units. Up to four talent amplifiers
can be connected to, and powered by, a
single Model 2 Central Controller. On each
talent amplifier the audio output signal is
provided on a standard ¼-inch 2-conductor
phone jack. The Model 32A also provides
a 3.5 mm output jack. An LED on each unit
lights whenever power is present, providing
setup assistance and user confidence. Iden-
tical in size, each is housed in a lightweight,
yet rugged, aluminum housing. A belt clip
allows it to be attached to belts, clipboards,
scabbards, pizza boxes, production assis-
tants, etc. An optional mounting adapter is
available, allowing a Model 32A or Model 33
to be installed in a permanent location.
The Model 32A is intended for use by on-air
personnel, and contains a source switch,
along with an output level control. Either
IFB channel 1 or IFB channel 2 can be sent
to the talent, along with the desired audio
“volume.”
The Model 33 is unique in that a “mix” of IFB
channels 1 and 2 can be created. Two level