Manual

Model 204 User Guide Issue 2, October 2018
Studio Technologies, Inc. Page 11
MODEL 204
ANNOUNCER’S CONSOLE
and Power-over-Ethernet (PoE) power.
There may be situations where the as-
sociated 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 correctly.
Midspan units are available from a variety
of sources, including many online retailers.
Microphone Input
The Model 204 provides a 3-pin female
XLR connector that allows a balanced
dynamic or phantom powered condenser
powered microphone to be connected. The
microphone can be a standalone handheld
(“stick”) type or can be part of a broadcast-
style headset. The Model 204’s microphone
input is directly compatible with balanced
dynamic or P48 phantom powered micro-
phones. A microphone should be connected
such that its associated XLR connector has
pin 1 as common, pin 2 as signal high (+),
and pin 3 as signal low (–). A configura-
tion setting allows the P48 phantom power
source to be enabled or disabled as de-
sired. Details on configuration settings will
be described later in this guide.
While the Model 204 provides an excellent
source of P48 phantom power, it’s possible
that an input on an associated piece of
equipment is already providing microphone
power. This could be connected to the
Model 204 by way of the microphone output
connector. This would not create a problem
since the circuitry that connects audio from
the Model 204’s microphone output con-
nector to the Model 204’s microphone input
connector will pass this microphone power
through without interruption. This situation
could be relevant when the Model 204’s
microphone output connector is interfaced
with the microphone input on a broadcast
camera, audio console, microphone mixer,
or similar equipment. Inputs on these de-
vices would typically offer phantom power
which in some cases may have been
enabled.
Headphone Output
The Model 204 provides a 2-channel
headphone output interfaced by way of a
3-conductor ¼-inch phone jack. Devices
such as stereo headphones or stereo
(“dual-muff”) broadcast-style headsets can
be directly connected using a 3-conductor
¼-inch plug. Following the usual conven-
tion the left channel should be terminated
on the 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 earbud but in these cases care must
be taken. If a 3-conductor ¼-inch plug is
used by a device it should be wired to the
tip and sleeve leads; the plug’s ring lead
should be left unconnected. But it’s also
possible that the monaural device will
be terminated on a 2-conductor (“tip and
sleeve”) plug. When the plug is inserted
into the Model 204’s headphone jack the
Model 204’s right headphone output chan-
nel will be shorted; the ring lead will be
directly connected to the sleeve lead. This
can lead to stress on the right channel
headphone output circuitry as well as extra
current draw. To prevent this undesirable
condition ensure that no input audio signal
is routed to the right headphone output
channel. Refer to the Configuration section
later in this guide for details on setting the
headphone audio routing to best accom-
plish this condition.
Microphone Output
A 3-pin male XLR connector provides a
microphone-level output that’s directly re
-
lated to the microphone input. Technically