Manual

Issue 3, August 2019 Model 374A User Guide
Page 12 Studio Technologies, Inc.
MODEL 374A
INTERCOM BELTPACK
input sources to be routed to both the left
and right channels. But the Model 374A’s
flexibility allows each source to be inde-
pendently configured for sending to the
left only, right only, or both left and right
headphone channels.
When using a stereo headset sending all
inputs to both channels is often referred to
as a dual-channel mono output. If a mon-
aural (“single muff”) headset is used the
Left configuration option allows the four
input channels to be combined to monau-
ral so that the listener can simultaneously
hear both sources.
Sidetone – Level
Choices are Off, Low, Medium Low,
Medium, Medium High, and High.
The Model 374A includes a sidetone
function that allows microphone audio
coming from the microphone preampli-
fier to be sent to the both channels of
the headphone output. This serves as a
user confirmation that they are actively
sending audio to one or more of the talk
output channels. Sidetone audio will only
be routed to the headphone output when
at least one of the talk channels is ac-
tive. The level of the sidetone audio can
be selected from among five values. The
correct value is simply the one that makes
the user most comfortable. Sidetone
audio can also be disabled by selecting
Off. Selecting Off would be useful only
in special applications such as during
troubleshooting or where user talk audio is
being returned as part of their listen audio
signals. The four rotary level controls will
not impact the sidetone level.
Button Operation
Choices are Push to Talk, Push to Talk/
Tap to Latch, Talk Disabled, Talk Disabled/
Phones Tap to Latch, and Call (button 4
only).
This configuration section allows indepen-
dent selection of how the four buttons will
function. When the Push to Talk mode is
selected the operation is self-explanatory.
Only when a button is pressed and held
will talk audio be sent out its associated
Dante transmitter channel.
When the Push to Talk/Tap to Latch mode
is selected a “hybrid” function of sorts is
enabled. Pressing and holding the button
will enable audio to be sent out its associ-
ated Dante transmitter channel. When the
button is released audio will stop being
sent out its associated transmitter channel.
Tapping (momentarily pressing) the button
will cause the function to “latch” into the
talk active mode. Tapping the button again
will cause the function to “unlatch” and
talk will no longer be active.
Many applications are best served when
the buttons are configured in the Push
to Talk mode. This ensures that a chan-
nel can’t accidentally be left in its active
mode. But there are certainly valid situa-
tions when the Push to Talk/Tap to Latch
mode setting will prove to be very useful.
When the Talk Disabled mode is selected
microphone audio will never be sent out
the associated Dante transmitter channel.
This can be useful when the audio input
associated with this channel is going to
be monitored but talk audio is not allowed
to “join” this specific intercom channel.
When the Talk Disabled/Phones Tap to
Latch mode is selected the associated
button will not impact talk audio but will