Studio Technologies 5110 V.3.2 - Manual (Page 10)

Issue 7, October 2014 Model 5110 User Guide
Page 10 Studio Technologies, Inc.
Model 5110
Mic/Line Input Module
The Model 5110 is not intended to precise-
ly control the gain applied to an input sig-
nal. The goal is to amplify the input signal
such that it can be effectively transported
to the next piece of audio equipment in the
chain. Gain should be applied only so that
the signal can reach a level that ensures
a good signal-to-noise ratio is maintained
while minimizing the risk of signal over-
load. The Model 5110’s output signals will
be connected, either directly or via associ-
ated audio transport equipment, to inputs
on an audio console which will have pre-
cise control of the signal levels.
Level Meters
Associated with each mic/line input is a
7-segment LED level meter. These meters
are provided for use during input sensitivity
setting as well as being useful for general
signal monitoring. The labeling of the
meters refers to the level in reference to
the module’s analog reference level. For
the Model 5110S (SMPTE) version the
analog reference level is +4 dBu. For the
Model 5110E (EBU) version the analog
reference level is 0 dBu. So for example, a
signal that is sufficient to just cause the “6”
LED to light will represent an analog output
level that is 6 dB above analog nominal.
This will equate to +10 dBu for the Model
5110S and +6 dBu for the Model 5110E.
This will also represent digital output levels
of –14 dBFS for the Model 5110S and
–12 dBFS for the Model 5110E.
Phantom Power
To support high-performance microphones,
the Model 5110 can provide a source of
+48 volt DC phantom power. A push-
button switch is associated with each
channel and allows phantom power on/off
control. For maximum flexibility phantom
power is available in all four input sensitiv-
ity settings (line, 15, 30, and 45 dB). While
phantom power would not typically be
used in the line setting it’s still available
for special applications.
Pushbutton Switch
“Lock Out”
To prevent unauthorized changes to the
Model 5110’s input sensitivity and phantom
power settings a pushbutton switch “lock-
out” function is provided. Simply press and
hold both +48V (phantom) pushbutton
switches for about two seconds to enable
(or disable) the pushbutton switch lock-out
function. Whenever the pushbutton switch
lock-out function is active the Data/Lock
LED, located on the bottom right side of
the front panel, will light.
Remote Control
A Model 5190 Remote Access Module
allows up to 16 Model 5110 Mic/Line Input
Modules, or a combination of up to 16
Model 5110 and other compatible 5100-
Series modules, to be monitored and
controlled using a standard web browser.
Whenever the Model 5190 is actively com-
municating with a Model 5110 the latter’s
Data/Lock LEDs will flash in response. The
Model 5190 will continually communicate
with each module about once per second.
A module identify function can be enabled
which will cause the front-panel LEDs on a
specific Model 5110 to flash on and off for
a few seconds. This is provided so that on-
site personnel can confirm which specific
module is being remotely controlled.