Issue 1, June 2018
Model 371A User Guide
Page 10
Studio Technologies, Inc.
MODEL 371A
INTERCOM BELTPACK
STcontroller allows observation and selec-
tion of functions that include:
• Microphone input type (dynamic or
electret)
• Microphone preamplifier gain
• Sidetone level
• Mic kill support
• Talk button operation
Changes made using STcontroller will be
immediately reflected in the unit’s opera-
tion; no Model 371A “reboot” is required.
Each time a change is made the three
buttons, talk 1, talk 2, and call, on the
top panel will momentarily flash orange
in a distinctive pattern to indicate that a
command from STcontroller has been
received.
Using STcontroller
Immediately after starting STcontroller the
application will locate and display the de-
vices that it can control. The one or more
Model 371A units that are recognized will
appear in the device list. Use the
Identify
command to allow easy recognition of a
specific Model 371A unit. Double clicking
on a device name will cause the associ-
ated configuration menu to appear. Re-
view the current configuration and make
changes as required.
Microphone Input Type
Choices are
Dynamic
and
Electret
.
If the associated headset has a dynamic
(non-powered) microphone select the
Dynamic
input type. If the headset has
an electret microphone that requires a
source of low-voltage DC power for opera-
tion select
Electret
. Note that the Model
371A cannot supply P12 or P48 phantom
power that may be required for balanced
condenser (capacitor) microphones. This
should not pose an issue as this type of
microphone is essentially never associ-
ated with a headset that would be used for
intercom applications.
Microphone Preamplifier Gain
Choices are
Low (42 dB)
and
High (48 dB)
for dynamic input type and
Low (22 dB)
and
High (30 dB)
for electret input type.
A total of four microphone preamplifier
gain settings are provided. Which are
available depends on the configuration
of the microphone input type. Dynamic
microphones have an output level that is
typically lower than that provided by elec-
tret microphones. As such, the gain asso-
ciated with the low and high settings when
the input type is
Dynamic
are significantly
greater than the gain choices available
when the input type is
Electret
.
When the input type is
Dynamic
the
Low
(42 dB)
gain setting will be appropriate for
most applications. (Technically this gain is
approximately equal to the gain provided
within an RTS® BP-325 analog party-line
beltpack.) The
Low (42 dB)
gain setting
could also be valuable should the con-
nected microphone have a high sensitivity
(high output level for a given acoustical
input) or an enthusiastic user routinely
talks loudly into the microphone. Setting
the gain for
High (48 dB)
may be helpful in
some applications, such as with headsets
that have a low microphone output level.
The higher gain setting may also be useful
when the Model 371A is going to be de-
ployed at events where users are not able
to speak at normal levels, e.g., sporting
events such as golf tournaments.
Содержание 371A
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