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Model 233 User Guide Issue 1, September 2007
Studio Technologies, Inc. Page 27
modes should be considered before a
final selection is made. If possible, experi-
menting with both modes in a test environ-
ment might prove to be very helpful.
Relay Mode
Switch SW4-5 and SW4-6 configure the
operating mode of the auxiliary relay.
System Mode
Switch SW4-8 is used to configure the
overall operating mode of the Model 233.
Understanding how the two modes impact
overall system operation will ensure that
correct operation and maximum usabil-
ity will occur. When selected to the on-air
mode, the main output will mute whenever
a talkback function is active. The LED indi-
cators associated with the main output will
light accordingly. The on-air mode should
be selected for all on-air broadcast applica-
tions. It’s imperative that the main output
be muted whenever on-air talent is using
one of the talkback functions to communi-
cate with production personnel.
When configured for the production mode,
the main output is never muted in response
to a talkback function being active. The
main output will be controlled only by the
main output pushbutton. This mode allows
the main output to be used, for example,
as an additional talkback output. In this
way, the main output and talkback out-
put functions can be used independently
with neither impacting the other. This also
allows all three buttons to be used simul-
taneously. Note that as is always the case
the audio source for the main output is,
depending on its configuration, either the
output of the microphone preamplifier or
the output of the compressor.
In summary, when selected for the correct
application, both the system modes can
prove equally effective. A thorough study
Figure 19. Auxiliary relay control mode settings
Figure 20. System mode settings
Four modes are available:
• Relay disabled: In this mode the relay is
disabled and will never change state.
• Follows main output status: In this mode
the relay will follow the state of the main
output. Specifically, the relay will change
state (energize) whenever the main out-
put is active.
• Follows talkback 1 button status: In this
mode the relay will follow the state of the
talkback 1 button. Specifically, the relay
will change state (energize) whenever
the button is active.
• Follows talkback 2 button status: In this
mode the relay will follow the state of the
talkback 2 button. Specifically, the relay
will change (energize) state whenever
the button is active.