Manual
Table Of Contents
Issue 5, November 2017 Model 216 User Guide
Page 20 Studio Technologies, Inc.
• When selected to the on-air mode the
audio signal on the main output channel
will mute whenever the audio signal on
any of the talkback output channels is
active. The on-air mode should be se-
lected for all on-air broadcast applications
when it’s imperative that the audio signal
on the main output channel be muted
whenever on-air talent uses a talkback
output channel to communicate with
production personnel.
• When the system mode is set for produc-
tion with dim the audio signal on the
main output channel is never muted in
response to the audio signal on any of
the talkback output channels being ac-
tive. In addition, the level of the head-
phone output is dimmed (reduced in level
or attenuated) by 18 dB whenever the
main or talkback output channels have
audio present. In this way the four output
channels can be used independently,
with none impacting the other. And, the
headphone output can be connected to
amplified loudspeakers. The speakers
will reduce in level whenever one of the
output channels is active, preventing
acoustical feedback.
• When the system mode is set for produc-
tion the audio signal on the main output
channel is never muted in response to the
audio signal on any of the talkback output
channels being active. This mode allows
the main output channel to be used, for
example, as an additional talkback out-
put. In this way the main and talkback
output channels can be used indepen-
dently, with neither impacting the other.
This also allows all four pushbuttons to
be used simultaneously. When selected
for the correct application, this production
mode can prove to be very useful. But
it’s not appropriate for on-air use!
Figure 9. System mode settings
When the rotary level control on the right
side of the front panel has been assigned
to control the sidetone level the setting of
the headphone minimum level mode will
not impact it. In this case when the control
is in its fully counterclockwise position it
will always cause the sidetone level to be
fully muted.
System Mode
Switches 10, 11, and 12 are used to con-
figure the system mode of the Model 216.
Specifically, they determine how the main
output channel operates vis-à-vis the talk-
back output channels, whether the head-
phone output level is reduced during talk
operation, and whether a high-frequency
tone is added to the talk signal. Under-
standing how these five modes impact
overall system operation will ensure that
correct operation and maximum usability
will occur.
On-Air (talkback status impacts
main out status)
Production (talkback status
does not impact main out status)
SW1-10, SW1-11, SW1-12 – System Mode
1 2 3
4
5 6
7
8
O
N
9 10 11
12
1 2 3
4
5 6 7
8
O
N
9 10 11
12
1 2 3
4
5 6
7
8
O
N
9 10 11
12
1 2 3
4
5 6
7
8
O
N
9 10 11
12
Production with Dim (talkback status
does not impact main out status;
headphone out dims during talk)
1 2 3
4
5 6
7
8
O
N
9 10 11
12
Production with Dim & Tone (talkback
status does not impact main out status;
headphone out dims during talk;
18 kHz tone added to talk audio)
Production with
Tone (talkback status
does not impact main out status;
18 kHz tone added to talk audio)