Studio Technologies 210 2012 - Manual (Page 31)

Model 210 User Guide Issue 5, September 2012
Studio Technologies, Inc. Page 31
male XLR connector so that the line-level
audio source designated as IFB channel
1 is connected with signal high on pin 2
and low/shield on pin 1. The audio source
designated as IFB channel 2 should
be connected with signal high on pin 3
and low/shield on pin 1. With this connec-
tion scheme the nominal input level is
–10 dBu, the same as with an IFB circuit.
This may require that an external attenua-
tor (“pad”) be used to reduce the level of
the connected signal. As expected, pow-
ering the Model 210 requires an external
source of 24 volts DC to be connected.
Additional Connectors
Two spare connector locations are provid-
ed on the Model 210’s back panel. From
the factory they contain blank plates that
can be readily removed and replaced with
a variety of XLR connectors. These spare
connector locations are specifically includ-
ed so that a Model 210 can be customized
to meet the many specific needs that arise
in broadcast and related audio applica-
tions. Expected uses for these locations
include adding a 5-, 6-, or 7-pin XLR
connector to allow direct connection of
a broadcast headset. Other uses include
creating a “loop through” or “mult” func-
tions for the talkback output or IFB input
connections. In addition, Studio Technolo-
gies offers an optional line input card that
mounts directly in a spare connector loca-
tion. This was previously described in this
user guide.
The spare connector locations are com-
patible with the Neutrik DL-series of
connectors. For flexibility, versions are
available that provide from three to seven
contacts. For example, a compatible 3-pin
female connector would be Neutrik part
number NC3FD-L-1. To support headsets
the NC6FDS-L-1 is often used. This is a
6-pin female connector with the unique
Switch-craft 6-pin arrangement. The hard-
ware that secures the blank plates to the
Model 210’s back panel is also intended
to secure the replacement connectors.
If connectors are added to the Model
210’s spare connector locations adding
labels to those connectors can be helpful.
For a great look it is recommended that
Brother® P-Touch ¼-inch (6 mm) labels be
created. Tape material that prints white text
on a black background works out well for
the Model 210. The Brother label cassette
number TX-3151, white on black, is appro-
priate for use with many of their printers.
In addition to the spare connector loca-
tions on the back panel, provision has
been made to allow easy interconnection
with the Model 210’s printed-circuit-board-
mounted input and output connectors. This
was accomplished by including numerous
3-position male “header” connectors on
the Model 210’s circuit board. These head-
ers, on 0.1-inch centers, are wired in paral-
lel with the Model 210’s connectors. This
“no solder” solution makes customizing
a Model 210 a simple process. The head-
ers, located on the Model 210’s printed
circuit board, are Molex® part number
22-23-2031. They mate with Molex housing
number 22-01-3037. To make the intercon-
nection, separate crimp terminals are at-
tached to loose wires and then “snapped”
into the housing. Molex part number
08-50-0114 specifies crimp terminals that
are appropriate for wires of 22 to 30 gauge.
These parts are available worldwide from
sources such as Digi-Key (www.digikey.
com).
To make the process of connecting to
the Model 210’s headers a simple task