Manual

Issue 5, December 2018 Model 215 User Guide
Page 26 Studio Technologies, Inc.
The user, in response to a changing op-
erating environment, can then move the
level controls to get more or less level as
desired. The detent position will always
remain as a useful reference point. To
achieve this condition the audio level on
the appropriate audio inputs will have to
be calibrated as required. This is some-
what counter intuitive to the usual mental-
ity of just providing the user with whatever
level comes up by default. Spending a few
extra minutes “trimming” the input audio
channel levels can result in much happier,
and more productive, users.
One of the headphone output modes uses
the control in the center of the unit as a
balance function. In this case the detent
position will send approximately equal
levels to both the left and right headphone
output channels. This is as one would
expect from a “stereo” balance control
such as provided in consumer electronic
equipment.
When the headphone minimum level con-
figuration is set to –40 dB, turning a level
control to its fully counterclockwise posi-
tion will cause the level of its associated
headphone output channel(s) to 40 dB
below maximum. This ensures that users
will never be fully “isolated” from poten-
tially important cue signals. In addition,
when a control is set to provide a balance
function, turning it to either its fully clock-
wise or fully counterclockwise position will
cause the level on the applicable head-
phone output channel to be 40 dB below
its maximum.
If the headphone minimum level configu-
ration is set for full mute, turning a level
control to its fully counterclockwise posi-
tion will cause the level of the associated
channel(s) to fully mute. In addition, when
a control is configured to provide a bal-
ance function, rotating it to either its fully
clockwise or fully counterclockwise posi-
tion will cause the level of the applicable
channel to fully mute.
The overall level of the headphone output
can be configured as desired for specific
applications. The default setting, low, is
designed so that users will typically set
the rotary controls at approximately 50%
of rotation. The high setting would be
applicable in cases where an extreme
headphone output level is required or the
source material that is provided on the
Dante receiver (input) channels is lower
than typical.
USB Interface
A USB type A connector and associated
status LED is located on the back panel of
the Model 215. This data interface is used
only for updating the unit’s operating firm-
ware (embedded software). No audio data
of any kind will pass through it. For details
please refer to the Technical Notes section
of this guide.
Technical Notes
IP Address Assignment
By default the Model 215’s Ethernet inter-
face will attempt to obtain an IP address
and associated settings using DHCP
(Dynamic Host Configuration Protocol). If
a DHCP server is not detected an IP ad-
dress will be assigned using the link-local
protocol. This protocol is known in the
Microsoft® world as Automatic Private IP
Addressing (APIPA). It is also sometimes
referred to as auto-IP (PIPPA). Link-local
will assign an IP address in the IPv4 range
of 169.254.0.1 to 169.254.255.254. In this