Manual

Issue 1, January 2020 Model 348 User Guide
Page 24 Studio Technologies, Inc.
MODEL 348
INTERCOM STATION
considered an operational limitation as typi-
cally an audio console will provide the program
audio source at a nominal line level. As such,
any needed adjustment of the signal level can
be performed on the console.
All IFB
When a button function has been configured
for All IFB and the pushbutton is pressed or
the function is active then all of the other but-
tons configured for IFB will become active.
The LED in the pushbutton will light green
whenever the function is active. The Dante
IFB program audio input will continuously be
connected to the associated Dante output
channel. This is provided as a Program or
Program Only audio signal for use in a dual-
channel IFB implementation. Typically, the first
channel of a dual-channel IFB signal or “feed”
is referred to as Interrupt or Program with In-
terrupt while the second channel is referred to
as Program or Program Only. Using this Dante
input-to-output loop-through arrangement can
be valuable as any latency (time delay) that
occurs within the Model 348’s IFB function will
be matched in the All IFB signal path. In this
way, the Model 348’s audio latency will essen-
tially be matched in the program with interrupt
and program-only audio paths.
18 kHz Tone
When a button function has been configured
for 18 kHz Tone the channel’s operation is
very simple. When the pushbutton is pressed
or the function is active an 18 kHz sine wave
tone at –20 dBFS is connected to the associ-
ated Dante output channel. No voice or IFB
program audio is connected to the associated
Dante output channel.
20 kHz Tone
When a button function has been configured
for 20 kHz Tone the operation is very simple.
When the pushbutton is pressed or the func-
tion is active a 20 kHz sine wave tone at
–20 dBFS is connected to the associated
Dante output channel. No voice or IFB pro-
gram audio is connected to the Dante output
channel.
Disabled
When a button function has been configured
for Disabled no audio action will take place.
If the pushbutton is pressed it will flash red to
indicate that this specific button is disabled.
No voice, tone, or IFB program audio is con-
nected to the Dante output channel.
Using the Rotary Encoders
On the front panel of the Model 348 there are
ten rotary encoders. Eight of the rotary encod-
ers are located above the channel pushbut-
ton switches. They are associated with the
Dante audio input channels. A single rotary
encoder is associated with the level of the
headset’s headphone outputs. And finally, a
rotary encoder is associated with the monitor
section, impacting the internal loudspeaker
and, if configured for post-fader, the two
Dante monitor output channels. Each encoder
has 24 steps (“clicks” or “detents”) for each
360 degrees of rotation. Turning an encoder
knob clockwise by 1 and 1/3 rotations (32
steps or 480 degrees) is required to change
from audio minimum to audio maximum. (As
expected, the same action occurs in reverse:
when rotating an encoder counterclockwise
by 32 steps the audio level will change from
maximum to minimum.) Pressing on the top of
an encoder’s knob will activate a momentary
switch function that is used to mute the asso-
ciate audio signal(s).
The top surface of each encoder’s knob is
translucent and RGB (red-green-blue) LEDs
within each encoder can display a wide range
of colors. An encoder knob that is dimly lit with
a dark blue color indicates that its associated
function is active. This provides a physical
identification of each encoder’s location when