Studio Technologies M233-01151 - Manual (Page 39)

Model 233 User Guide Issue 5, November 2014
Studio Technologies, Inc. Page 39
A qualified technician can easily revise
the LED colors to meet an application’s
exact needs. The process would begin
by disassembling the Model 233’s enclo-
sure and detaching the pushbutton/LED
printed circuit board assembly. The LEDs
would then be unsoldered, removed, and
reinstalled (or replaced) in the desired
locations. To control the LED current and
set the brightness, a 825 ohm 1206-size
surface-mount resistor is electrically in
series with each LED.
For additional information about changing
the LED colors, please contact Studio
Technologies’ technical support.
Travel Case
For portable applications it may be desir-
able to store and transport each Model
233 in a protective case. After much travel
with prototype announcer console units,
Studio Technologies personnel learned
to appreciate the Pelican Model 1450
case. Purchased with the foam interior
option, it does an excellent job of holding
one Model 233, its associated 24 volt DC
power supply, and documentation. Some
applications may benefit from selecting a
larger case that would also hold a related
headset, cables, etc. A larger case could
also be selected that would hold multiple
Model 233 units. Pelican sells their prod-
ucts through a dealer network, many of
which can be located via a web search.
Additional Connectors
Three spare connector locations are
provided on the Model 233’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
included so that a Model 233 can be cus-
tomized 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 “loop through” or “mult” functions
for the line-level talkback output or inter-
com interface connections.
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
Switchcraft 6-pin arrangement. The hard-
ware that secures the blank plates to the
Model 233’s back panel is also intended
to secure the replacement connectors.
If connectors are added to the Model
233’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 233. The Brother label
cassette number TX-3151, white on black,
is appropriate 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 233’s printed-circuit-board-
mounted input and output connectors.
This was accomplished by including
numerous 3-position male “header” con-
nectors on the Model 233’s circuit board.
These headers, on 0.1-inch centers, are
wired in parallel with the Model 233’s con-
nectors. This “no solder” solution makes