Manual

Issue 5, November 2017 Model 216 User Guide
Page 28 Studio Technologies, Inc.
Additional Connectors
Locations
Two spare connector locations are pro-
vided on the Model 216’s back panel. They
are labeled A and B. From the factory they
contain blank plates that can be readily re-
moved and replaced with a variety of “XLR
style” connectors. The spare connector
locations are specifically included so that a
Model 216 can be customized to meet the
many specific needs that arise in broadcast
and related audio applications. Expected
uses for these locations include adding a
6- or 7-pin XLR connector to allow direct
connection of a broadcast headset. Other
uses include creating a “loop through” or
“mult” function for the microphone input or
headphone output connections. A number
of interface cable assemblies, along with
some special function kits, are available
from Studio Technologies. Please refer to
the website for details on what is available.
The spare connector locations are com-
patible with the Neutrik DL-series of con-
nectors. For flexibility, XLR 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. The NC6FDS-L-1 is
often used to support headsets. This is a
6-pin female connector with the unique
Switchcraft® 6-pin arrangement. Other
connectors, such as the etherCON protect-
ed RJ45 and 3-conductor ¼-inch jack, can
be also be installed. The 4-40 thread-pitch
hardware that secures the blank plates to
the Model 216’s back panel are also intend-
ed to secure the replacement connectors.
If connectors are added to the Model 216’s
spare connector locations adding labels
to them 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
216. The Brother label cassette number
TX-3151, white on black, is appropriate for
use with many of their printers.
The Model 216’s enclosure must be dis-
assembled prior to installing connectors
in the spare locations. Four 6-32 button-
head machine screws, two on the bottom
front of the enclosure and two on the back
panel, must be removed. A 5/64-inch hex
driver is required. The cover can then
be carefully separated from the chassis,
remaining attached by means of a flexible
cable assembly. This “flex-cable” assem-
bly links the main printed circuit board
assembly with the board assembly that
contains the pushbutton switches and
LED indicators. Ensure that the flex cable
is not damaged while the Model 216 is
being customized.
3-Position Headers
In addition to the spare connector loca-
tions on the back panel, provision has
been made to allow easy interconnection
with the Model 216’s printed-circuit-board-
mounted input and output connectors.
This was accomplished by including sev-
eral 3-position male “header” connectors
on the Model 216’s circuit board. These
headers, on 0.1-inch centers, are wired in
parallel with some of the Model 216’s con-
nectors. This “no solder” solution makes
customizing a Model 216 a simple pro-
cess. The headers, located on the Model
216’s printed circuit board, are Molex®
part number 22-23-2031. They mate with
Molex housing number 22-01-3037. To
make the interconnection, separate crimp
terminals are attached to three loose wires
and then “snapped” into the housing.