Studio Technologies 5150 V.1 - Manual (Page 10)

Issue 5, March 2014 Model 5150 User Guide
Page 10 Studio Technologies, Inc.
Model 5150
Video Generator Module
Optical SDI Output
This section applies only when the spe-
cific Model 5150 module being installed
was configured at the factory to provide an
optical output. A video SFP (small form-
factor pluggable) optical module is used to
provide the optical SDI output. A range of
SFP modules can be installed in the “cage”
at the back of the Model 5150. These in-
clude transceiver modules that have both
an optical output (transmitter) and an opti-
cal input (receiver), as well as output-only
(transmitter) modules. The technical char-
acteristics of the optical output will depend
on the specific module installed. The most
common transceiver or output-only SFP
module used in the Model 5150 will have
an FP (Fabry-Perot) laser emitting “light” at
a wavelength of 1310 nanometers. Other
modules can utilize a higher-performance
DFB (distributed feedback) laser that is
manufactured to produce light at one of the
18 CWDM wavelengths. (For broadcast
applications, the common first-utilized
CWDM wavelengths are often 1490 and
1550 nanometers.)
An LC plug terminated on a single-mode
optical fiber is used to mate with the SFP’s
optical output. When referenced to the
front of an SFP transceiver or output-only
SFP module the optical output is located
on the SFP module’s left side. To indicate
the optical output port a graphic arrow icon
pointing “out” may be present on the top of
the module. Refer to Figure 2 for a detailed
view. When terminating the LC plug with the
socket on the SFP module be certain that
the plastic plug’s locking tab is fully en-
gaged into the slot of the SFP module. This
will help prevent the LC plug from becom-
ing disconnected due to physical stress or
vibration on the fiber. Also ensure that the
end (“face”) of the plug’s ferrule has been
cleaned using appropriate methods.
Note that as of the time this user guide
was written the Model 5150 supports only
single-mode optical cable. Contact Studio
Technologies should support for multi-
mode fiber be required.
The Model 5150 module should remain
without power whenever its optical output
has not been terminated. This ensures that
the optical energy will not project into free
space and possibly into the eyes of instal-
lation personnel. The optical output power
of video SFP modules selected by Studio
Technologies adheres to the class 1 laser
standard. As such, they do not emit suf-
ficient power to be considered hazardous.
But best safety practices require that the
optical output port and all unconnected
fiber ends not be directly viewed.
No configuration setting is required to
activate the optical output. It is always ac-
tive and will contain the same SDI data as
that found on the coaxial (BNC) output. As
such there is no problem in simultaneously
connecting to both the optical and coaxial
(BNC) outputs.
Optical SDI Input
If supported by the specific Model 5150
module being installed, an HD- or 3G-SDI
signal transported on a single-mode opti-
cal fiber can be connected. For an input to
be present a video SFP transceiver or a
receive-only SFP module must have been
installed in the SFP “cage” in the back of
the unit. The optical receiver circuitry in an
SFP module is “broadband” and doesn’t
need to receive a specific wavelength of
single-mode optical signal for correct op-
eration. As long as the optical signal has