Studio Technologies 212 2013 - Manual (Page 27)

Model 212 User Guide Issue 5, May 2013
Studio Technologies, Inc. Page 27
both the left and right channels. The bal-
ance control, located on the right, adjusts
the relative left/right level balance. In this
mode the controls operate in a manner
reminiscent of a consumer audio ampli-
fier or receiver. If set to the normal mode,
rotating the balance control in the coun-
terclockwise direction reduces the level of
the right channel providing the user with
more perceived level in the left channel.
If set to the reverse mode, rotating the
balance control in the counterclockwise
direction reduces the level of the left chan-
nel providing the user with more perceived
level in the right channel.
When in the level/balance mode and the
minimum output level is set to –40 dB,
turning the level control to its fully coun-
terclockwise position will place both head-
phone output channels to 40 dB below
maximum. This ensures that talent will
never be fully “isolated” from potentially
important cue signals. In addition, rotat-
ing the balance control to either its fully
clockwise or fully counterclockwise posi-
tion will cause the applicable channel to
be 40 dB below its maximum. If set to the
full mute mode, turning the level control
to its fully counterclockwise position will
cause both the left and right channels to
fully mute. In addition, rotating the balance
control to either its fully clockwise or fully
counterclockwise position will cause the
applicable channel to fully mute.
Each control has a mechanical step
(detent) that is located at the halfway
(50%) position of its rotation range. The
balance control will typically be set to its
center, detent position, making the level
of the left and right channels equal. In an
ideal installation, the level control can also
be set to its detent position and provide a
comfortable headphone output level. This
will allow the user, in response to their
preference or a changing environment, to
adjust the level and balance controls as
desired. The detent positions will always
remain as a useful reference point. To
achieve this condition the audio level on
the connected sources must be adjusted
as required. Spending a few extra minutes
“trimming” the connected audio signals,
rather than just providing whatever hap-
pens to come up, should prove worth-
while. The result will be talent that is more
relaxed, and an overall production that
works more smoothly.
Technical Notes
Model 44 Interface
Some applications may benefit from us-
ing the Model 44 Interface which is also
available from Studio Technologies. The
single-rack-space unit provides operat-
ing power and digital audio interconnec-
tion for up to six Model 212 Announcer’s
Consoles. Each Model 212 interconnects
with an RJ45 port on the Model 44 using a
single 4-pair “CAT5” or “CAT6” Ethernet-
style cable. One pair of the twisted-pair
cable supplies 24 volts DC to the Model
212. Two additional pairs transport digital
audio to and from the Model 212’s AES3
interface. A fourth pair is available for
installer-specified functions. Details about
the Model 44 are available on the Studio
Technologies website.
The EtherCon® Connector Card Kit
(Studio Technologies, Inc. part number
31207) offers a simple means of preparing
a Model 212 for use with a Model 44 Inter-
face and Ethernet-style interface cables.
This optional card kit is intended to be
mounted in one of the two spare connec-
tor openings located on the Model 212’s