Studio Technologies 212 2013 - Manual (Page 18)

Issue 5, May 2013 Model 212 User Guide
Page 18 Studio Technologies, Inc.
the Model 212’s nominal operating level
of –20 dBFS before signal compression
would start taking place. This setting is
appropriate for most applications. The –4
dBFS setting allows 16 dB of signal above
nominal and in this case the compressor
would essentially act to prevent signals
from reaching digital maximum ( 0 dBFS).
“Hard” clipping of a signal by reaching
digital maximum will result in very nasty
audio performance.
Headphone Source Selection
Switch assembly SW2 is used to configure
the source or sources that are routed to
the stereo headphone output. Up to four
sources may be available with the choices
being digital input channel 1, digital input
channel 2, auxiliary input 1, and auxiliary
input 2. The digital input channels are pro-
vided by the selected digital input source.
The digital input source is configured
from these choices: the AES3id input, the
optional AES3 input, or the bidirectional
digital interface. The auxiliary inputs are
analog and available only if optional line
input cards have been installed.
Each of the available input sources can be
assigned to the headphone output’s left
channel, right channel, or both the left and
right channels. The Model 212’s circuitry
allows any combination of input assign-
ments to be made. For example, consider
the situation where a single digital input
channel is actively connected to the Model
212. In this case it may be desirable to
assign this signal to both the left and right
headphone channels. This would entail
setting switches SW2-1 and SW2-5 to their
on positions. All other switches would
remain in their off positions.
A more complex application might have a
2-channel digital audio signal connected
to the Model 212, with an optional line
input card installed. Line-level audio from
a golf event “spotter” is connected to the
line input. In a case such as this, it would
be typical for digital input channel 1 to
be assigned to the headphone’s left
channel, digital input channel 2 assigned
to the right channel, and auxiliary input 1
also assigned to the right channel. This
would allow both digital input channel
2 and “spotter” audio to be heard in the
headphone’s right-channel output. To
achieve this would require that switches
SW2-1, SW2-6, and SW2-7 be placed in
their on positions. Note that using another
Studio Technologies 200-series announc-
er’s console at the “spotter” location could
also prove effective. It would provide all
the necessary microphone preamplifier,
talkback routing, and headphone monitor-
ing resources.
Figure 7. Left and right channel headphone
source selection settings