Studio Technologies 212 2006 User Manual
Page 21

Model 212 User Guide
Issue 3, July 2006
Studio Technologies, Inc.
Page 21
As you may have already guessed, when 
selecting the reverse left/right mode of 
operation everything is reversed! To be 
more specific, when selected for reverse 
mode, and the level/level mode is also 
selected, the left control adjusts the head-
phone output’s right channel (output 
jack’s ring lead) while the right control 
adjusts the left channel. When selected to 
the reverse mode, and the level/balance is 
also selected, turning the balance control 
in the counterclockwise direction increas-
es the perceived level of the right channel 
output, and vice versa.
The reverse mode is provided specifically 
for cases where a headset’s left and right 
ear pieces are placed on a user’s head 
in a reverse orientation. This ensures 
that the user is provided with a consistent 
and easy-to-use set of headphone level 
controls.
Minimum Level Mode
Switch SW3-6 is used to configure the 
headphone output’s minimum level. In the 
–40 dB mode the minimum headphone 
output level is 40 dB below maximum. The 
headphone output channels will never fully 
mute. This ensures that any audio signal 
present on the selected cue audio source 
will always be present on the headphone 
output. In most on-air broadcast applica-
tions this is the appropriate setting.
Figure 12. Headphone output minimum level 
settings
When the full mute mode is selected, 
and the level/level mode is also selected, 
moving either control to its fully counter-
clockwise position will cause its associ-
ated channel to fully mute.
When the full mute mode is selected, and 
the level/balance mode is also selected, 
turning the level control to its fully coun-
terclockwise position will cause both 
headphone channels to mute. Turning the 
balance control to either its fully clock-
wise or fully counterclockwise position will 
cause the appropriate channel to mute.
Selecting the full mute mode may be 
appropriate for applications where mini-
mizing the chance of audio “leakage” 
is important. This could occur when the 
connected headset or headphones are at 
times placed on a desk or tabletop.
Digital Input Source
Switches SW3-7 and SW3-8 are used to 
select which one of the three digital inter-
faces will be used by the Model 212 as its 
audio source and reference clock input. 
The two audio channels associated with 
the selected digital input can be assigned 
to the headphone output channels. In 
addition, the clock signal derived from the 
selected digital input is used by the digi-
tal audio circuitry. This clock signal is the 
master “sync” reference that the Model 
Figure 11. Headphone control operation 
settings
