Studio Technologies 210 2012 - Manual (Page 29)

Model 210 User Guide Issue 5, September 2012
Studio Technologies, Inc. Page 29
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.
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 825 ohm 1206-size
surface-mount resistor is electrically in
series with each LED.
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
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 210 units. Pelican sells their prod-
ucts through a dealer network, many of
which can be located via a web search.
Connecting Line-Level Inputs
The Model 210 is designed to directly
connect with “wet” broadcast IFB circuits.
However, there may be applications where
it would be helpful to also be able to con-
nect standard line-level audio sources.
If it’s anticipated that line-level audio
sources will frequently need to be con-
nected to the Model 210, one or two
line input cards can be installed. These
cards, available from Studio Technologies
and purchased separately (part number
31084), are mounted into the spare con-
nector locations that are provided on the
Model 210’s back panel. Each line input
card contains passive circuitry, including
a 3-pin female XLR connector and a
10 k ohm to 10 k ohm isolation trans-
former. Once installed, balanced or un-
balanced line-level audio sources can
be directly connected. Note that in cases
where only line-level signals are connect-
ed (no “wet IFB”) an external source of 24
volt DC power is required. This shouldn’t