Manual

Issue 1, September 2016 Model 362 User Guide
Page 8 Studio Technologies, Inc.
362’s circuitry. A 10BASE-T connection is
not sufficient and a 1000BASE-T (“GigE”)
connection is not supported unless it can
automatically “fall back” to 100BASE-TX
operation. The Model 362 supports Ether-
net switch power management, enumerat-
ing itself as a PoE class 1 device.
The Ethernet connection is made by way
of a Neutrik etherCON protected RJ45
connector that is located on the bottom
of the Model 362’s enclosure. This allows
connection by way of a cable-mounted
etherCON connector or a standard RJ45
plug. The Model 362’s Ethernet interface
supports auto MDI/MDI-X so that a “cross-
over” or “reversing” cable will never be
required.
Ethernet Connection without PoE
As previously discussed in this guide, the
Model 362 was designed such that the
Ethernet connection will provide both data
and Power-over-Ethernet (PoE) power.
There may be situations where the asso-
ciated Ethernet switch does not provide
PoE power. In such cases an external PoE
midspan power injector can be used. If
the selected midspan power injector is
802.3af-compatible it should function cor-
rectly. Midspan units are available from a
variety of sources, including many online
retailers.
Headphone Output
The Model 362 provides a 2-channel
headphone output by way of both ¼-inch
and 3.5 mm 3-conductor phone jacks.
These jacks are electrically in common
(“multed”) with each other: tip-to-tip, ring-
to-ring, sleeve-to-sleeve. Devices such as
stereo headphones or stereo (“dual-muff”)
broadcast-style headsets can be directly
connected using a 3-conductor ¼-inch or
3.5 mm plug. Following the usual conven-
tion the left channel should be terminated
on the plug’s tip lead, the right channel on
the ring lead, and common on the sleeve
lead.
It’s also possible to use a monaural
(“single-muff”) headset or broadcast-type
single earpiece. If a 3-conductor plug is
to used by the device it should be wired
such that audio positive is on the tip lead
and audio common is on sleeve lead;
the plug’s ring lead should be left uncon-
nected. But it’s also very likely that the
monaural device will be terminated on a
2-conductor (“tip and sleeve”) plug. When
this plug is inserted into one of the Model
362’s headphone jacks the Model 362’s
right headphone output channel will be
shorted to common since the output jack’s
ring lead will be shorted to its sleeve lead.
This can lead to stress on the right channel
headphone output circuitry as well as extra
PoE current draw. To prevent this condition
the headphone output mode configuration
choice (switches SW1 and SW2) should
be set for single-channel monaural. This
disables the right headphone output chan-
nel and sends the audio signals only to the
left output channel. As such a short-circuit
condition presented to the ring lead on
either of the output jacks will not result in
an issue. Refer to the Configuration section
later in this guide for details on setting the
headphone output mode.
Dante Configuration
For audio sources to pass to the Model
362 requires that several Dante-related
parameters be configured. These configu-
ration settings will be stored in non-volatile
memory within the Model 362’s circuitry.
Configuration will typically be done with the
Dante Controller software application which