Studio Technologies M212-00151 - Manual (Page 18)

Issue 2, June 2006 Model 212 User Guide
Page 19 Studio Technologies, Inc.
The headphone output monaural mode
feature was specifically included so that
a special “2-channel headphone mix”
mode can be created. By enabling the
mono mode, the two front-panel user level
controls (“pots”) can be used to create
the desired “mix” of signals being sent
to the headphone output. Many applica-
tions, especially in production settings,
can benefit from this capability. The
desired cue sources must be carefully
assigned to take advantage of the monau-
ral mode. The first cue source should be
assigned, using the DIP-type switches,
to the left channel. Its output level will be
adjusted by the left control. The second
cue source should be assigned to the
right channel. Its output level will be
adjusted by the right control.
There is one limitation related to the head-
phone mono output mode. It’s the fact
that the output will be 2-channel mon-
aural. Whatever signal is present on the
headphone output’s left channel will also
be present on the right channel. A stereo
headphone mix can’t be created. But in
most cases this limitation won’t over-
shadow the benefit of being able to create
the mix. For signal-flow clarification please
review the block diagram located at the
end of this user guide.
Operating Modes
The twelve switches associated with
switch assembly 3 are used to configure
the Model 212’s operating modes. Techni-
cally, these switches “talk” to the micro-
controller integrated circuit and associated
software that give the Model 212 its
“smarts.” The software has been carefully
designed to provide a number of different
ways in which the unit can function. It’s
critical to carefully review the available
Figure 8. Main output button mode settings
options and choose the ones that best
meet the needs of a specific application.
Note that switches can be changed even
while the Model 212 is powered up and
operating. The unit’s operating character-
istics will change in “real-time” in response
to configuration changes.
Main Output Button Mode
Switches SW3-1 and SW3-2 configure
how the main output button functions.
There are four available modes:
• Push to mute: In this mode the main
output channel is normally active. The
main output channel will mute (have
minimum digital audio level) whenever
the button is pressed and held. This is
the “cough” mode typically used for
on-air sports broadcasting applications.
• Push to talk: In this mode the main
output channel is normally muted.
The main output channel will become
active whenever the button is pressed
and held.
• Alternate action: In this mode the main
output channel will change between
its active and muted state whenever
the button is pressed. Upon power up
the main output channel will be in its
muted state.