Studio Technologies M233-01151 - Manual (Page 29)

Model 233 User Guide Issue 5, November 2014
Studio Technologies, Inc. Page 29
Operation
At this point the desired input, output, and
power connections should have been
made. The button labels may have been
revised. After carefully reviewing the appli-
cation, the configuration switches should
have been set. Normal operation of the
Model 233 can now begin. The unit will
begin functioning as soon as a power
source is connected. As previously dis-
cussed, power for the Model 233 can be
provided by an intercom line or an exter-
nal source of 24 volt DC. It’s important to
highlight the fact that the Model 233 is an
active device. Audio signals will not be
present on the outputs unless power has
been supplied. Specifically, the micro-
phone does not passively “cut through”
to the main output connector!
Upon Model 233 power up, the four status
LEDs will light in succession as a firmware
“boot up” indication. The unit will then
begin normal operation. Depending on
the selected configuration, one LED as-
sociated with the state of the main output
may be lit. The user is now presented with
three buttons, four LEDs, and three rotary
controls. These are simple to operate and
understand, as will be described in the
following paragraphs.
Pushbutton Switches and
Status LEDs
Three pushbutton switches are used to
control the main output and the talkback
functions. The way each operates de-
pends on the selected configuration. Four
LED indicators are located adjacent to the
buttons. They reflect the status of the main
output and talkback functions.
Main Output Button and LED Indicators
The button on the left, factory labeled
as COUGH, functions according to the
selected configuration. Two LED indicators,
located directly above the button, are
associated with the status of the button
and/or the main output. If the Model 233
is set to either the on-air or stadium an-
nounce mode the green LED, located on
the right, is lit whenever the main output
is active. This could be considered as an
“on-air” or mic active indicator. At the least
it should serve as a “careful what you say”
warning! The red LED, located on the left,
will be lit whenever the main output is
muted. This indicates that it’s safe to
speak as one sees fit.
If the Model 233’s system mode is config-
ured for production the red LED will never
light. This is to reflect the fact that the main
output button has now taken on a function
similar to that of one of the talkback but-
tons. To clarify, when the Model 233 is set
to the production mode the red LED will
never light while the green LED will light
whenever the main output is active.
Main Output Button Modes
If the Model 233 is set for the on-air or
stadium announce mode:
• Push to mute: If this mode is selected the
main output is normally active. The main
output will mute whenever the button is
pressed and held.
• Push to talk: If this mode is selected the
main output is normally muted. The main
output will become active whenever the
button is pressed and held.
• Alternate action: If this mode is selected
the main output will alternate between
its active and muted states whenever the
button is pressed. Upon power up the
main output will be in its muted state.