Manual

Model 215 User Guide Issue 5, December 2018
Studio Technologies, Inc. Page 25
ed state. If the audio signal was in the
“latched-on” state when talkback activity
began, once talkback activity ends that
state will resume; the audio signal asso-
ciated with the main output channel will
again be in its on (“latched”) state.
Talkback Buttons and LED
Indicators
The pushbutton in the middle, factory
labeled TALKBACK 1, controls the audio
signal associated with the talkback output
channel 1. The pushbutton on the right,
factory labeled TALKBACK 2, controls the
audio signal associated with the talkback
output channel 2. The manner in which the
talkback pushbuttons function depends
on the way they were configured. One
LED indicator, green in color, is located
directly above each talkback pushbut-
ton. It lights whenever the microphone
audio signal is connected to its associ-
ated talkback output channel. If the Model
215’s system mode is selected for on-air,
whenever either or both of the talkback
functions are active the audio signal as-
sociated with the main output channel will
be placed in its muted state. If the Model
215 is selected for the production mode,
the status of the talkback pushbuttons will
not impact the status of the audio signal
associated with the main output channel.
Talkback Button Modes
Depending on the selected configuration,
there are two ways the talkback pushbut-
ton can function:
• Push to Talk: If this mode is selected
the audio signal associated with the
talkback output channels is normally
muted. The audio signal will become
active whenever its associated talkback
pushbutton is pressed and held.
• Hybrid: This mode is a combination of
push to talk and alternate action. If the
pushbutton is pressed and held, the
audio signal associated with that talk-
back output channel will become ac-
tive until the talkback pushbutton is
released. If the talkback pushbutton is
momentarily “tapped” the audio sig-
nal will change state. Upon Model 215
power up the audio signal will always be
in its muted state.
Headphone Output
Three rotary controls (“pots”) are located
on the Model 215’s front panel and are as-
sociated with the headphone output. The
way the controls function depends on the
selected headphone output configuration.
One configuration parameter sets what
audio input signals are assigned to the
controls. There are four modes available.
Another parameter selects whether the
headphone output channels will maintain
a minimum output level or can be fully
muted.
To understand exactly how the level con-
trols on a specific Model 215 will function
requires knowledge of how that unit has
been configured. Please refer to the Con-
figuration section of this guide for details.
It may require a bit of study to fully under-
stand how the controls will function. The
author would like to be able to provide a
simple explanation. But there are really
four simple explanations, one for each
configuration choice!
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 215
users. In an ideal installation, setting the
controls to their detent position will result
in a comfortable headphone output level.