Studio Technologies 220 2004 - Manual (Page 25)

Issue 2, August 2004 Model 220 User Guide
Page 26 Studio Technologies, Inc.
• Hybrid: This mode is a combination
of push to talk and alternate action. If
the function is selected to be enabled,
whenever the button is pressed and
held talkback output 2 will become ac-
tive until the button is released. If the
button is momentarily “tapped” the out-
put will change state. Upon Model 220
power up talkback output 2 will be in its
muted state.
Headphone Output Level Controls
Two rotary controls (“pots”) are located
on the Model 220’s front panel and are as-
sociated with the headphone output. The
way the controls function depends on the
selected configuration. One configuration
parameter sets the controls to operate in a
level/level or a level/balance mode. Anoth-
er parameter allows the left/right assign-
ment of the controls to be reversed. A third
parameter selects whether the headphone
output channels will maintain a minimum
output level or can be fully muted.
Level/Level Mode
When set to the level/level mode, the
two controls operate independently. Each
control sets the output level of one chan-
nel of the stereo headphone output. If con-
figured to the normal mode, the control on
the left side is used to adjust the level of
the headphone output’s left channel. The
control on the right is used to adjust the
level of the right channel. If configured
to the reverse left/right mode, the control
on the left side adjusts the headphone
output’s right channel. The control on
the right adjusts the left channel.
When in the level/level mode, and the
minimum output level is set for –40 dB,
turning each control to its fully counter-
clockwise position will place its respective
output level 40 dB below its maximum.
This setting ensures that talent will never
be fully “isolated” from potentially impor-
tant cue signals. If present on one of the
Model 220’s inputs and assigned to the
headphone channels, some audio signal
will always be present on the headphone
output. If set to the full mute mode, turning
each control to its fully counterclockwise
position will cause its respective output
to fully mute.
Each level control has a mechanical step
(detent) that is located at the halfway
(50%) position of its rotation range. This
is intended to serve as an aid to Model
220 users. In an ideal installation, setting
the controls to their detent position will
result in a comfortable headphone output
level. The user, in response to a changing
operating environment, can then move the
level controls to get more or less level as
desired. The detent position will always
remain as a useful reference point. To
achieve this condition the audio level on
the connected IFB circuit, or line inputs,
will have to be calibrated as required. This
is somewhat counter to the usual mental-
ity of just providing the user with whatever
level comes up by default. Spending a few
extra minutes “trimming” the audio levels
can result in much happier, and more pro-
ductive, talent. As previously mentioned,
a level trim potentiometer is associated
with each line input. If the line inputs are
utilized as cue sources, adjusting the trim
pots may be helpful in achieving the de-
sired adjustment range of the level con-
trols. Refer to the Technical Notes section
of this user guide for details.
Level/Balance Mode
When set to the level/balance mode, the
two controls operate together to adjust
the desired headphone output level. The
control on the left adjusts the overall level