Studio Technologies 210 2008 - Manual (Page 28)

Issue 4, October 2008 Model 210 User Guide
Page 28 Studio Technologies, Inc.
Studio Technologies’ developed high-
performance IFB interface units. These
products do an excellent job of providing
power and audio to connected devices
such as the Model 210. However, un-
like other products, the power supplied
by these units’ IFB circuits maintain their
output voltage all the way to their full rated
current. The result is being able to power
more devices over longer cable runs. In
addition, the audio quality of these units
is superior. For further information please
refer to the Studio Technologies website.
LED Colors
As previously described, two LED indica-
tors are associated with the main output
and are located directly above the main
output pushbutton switch. The red LED,
located on the left, is lit whenever the
main output is muted. The green LED,
located on the right, is lit whenever the
main output is active. The thought pro-
cess behind the color choices was that
red would relate to the main output being
muted (“stop”) while green would relate
to the main output being active (“go”). It’s
possible that these color choices may not
meet the needs of all users and applica-
tions. For example, it’s reported that one
European broadcaster typically uses these
two colors in the opposite fashion. Their
choice is to have the red LED lit whenever
the main output is active, warning the tal-
ent that they are “on-air.” The green LED
is lit whenever the main output is muted,
indicating to the talent that it’s “safe” to
say whatever they wish, about whomever
they wish to say it about!
For consistency, the LED associated
with the talkback button was selected to
be green. This lights whenever talkback is
active. It’s possible that some applications
may benefit from revising this LED color
too. While red is certainly one possible
choice, other colors are also a possibility
including amber, orange, or blue—these
days there are lots of choices available.
The only limitation is the amount of current
available to light each LED. Using series
resistors of no less than 560 ohms will
ensure correct Model 210 operation.
A qualified technician can easily revise
the LED colors to meet an application’s
exact needs. The process would begin
by disassembling the Model 210’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 resistor is electrically
in series with each LED. An 820 ohm,
¼-watt resistor is associated with the
red LED while a 560 ohm, ¼-watt resistor
is associated with each green LED. These
resistors would also have to be unsol-
dered, removed, and reinstalled. Then
the unit would be reassembled and tested
to confirm that the changes function as
desired.
For additional information about chang-
ing 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
210 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 210, its associated 24 volt DC
power supply, and documentation. Some