Manual
Table Of Contents
Issue 5, November 2017 Model 216 User Guide
Page 26 Studio Technologies, Inc.
Each level control has a mechanical step
(detent) that is located at the halfway
(50%) position of its rotation range. This is
intended to serve as an aid to Model 216
users. In an ideal installation, setting the
controls to their detent position will result in
a comfortable headphone output level. The
user, in response to a changing operating
environment, can then move the level con-
trols 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 somewhat counter intuitive
to the usual mentality of just providing the
user with whatever level comes up by de-
fault. Spending a few extra minutes “trim-
ming” the input audio channel levels can
result in much happier, and more produc-
tive, users.
One of the headphone output modes uses
the control in the center of the unit as a bal-
ance function. In this case the detent posi-
tion 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 provid-
ed 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 potentially
important cue signals. In addition, when a
control is set to provide a balance function,
turning it to either its fully clockwise or fully
counterclockwise position will cause the
level on the applicable headphone output
channel to be 40 dB below its maximum.
If the headphone minimum level configura
-
tion is set for full mute, turning a level con-
trol to its fully counterclockwise position will
cause the level of the associated channel(s)
to fully mute. In addition, when a control is
configured to provide a balance function,
rotating it to either its fully clockwise or fully
counterclockwise position 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 applica-
ble in cases where an extreme headphone
output level is required or the source mate-
rial 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 216. 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 216’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