Optical Systems Design OSD8826 Series, Operator'S Manual

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OPTICAL SYSTEMS DESIGN
DOC ID: 10110306
OSD8826 OPERATOR MANUAL
PAGE 4
1 TECHNICAL SUMMARY
1.1 BRIEF DESCRIPTION
1.1.1
OVERVIEW
The OSD8826 series is a high-quality fiber optic digital video and data transmission system. The
system consists of the OSD8826T and the OSD8826R, which are designed to be used as a pair, and
provide one-way transmission of PAL, NTSC or SECAM video, plus full-duplex transmission of one
data channel and forward path transmission of a contact closure.
The OSD8826T accepts one analog composite video input signal along with one digital data input
signal. The video signal is converted to digital with 10-bit resolution so as to preserve the quality of the
input signals. The resulting digital signal is multiplexed and transmitted as a digital bit-stream through
the fiber. The OSD8826T also includes an optical receiver section that decodes the digital signal
transmitted by the OSD8826R, to provide data output signals. Data can be TTL, RS232, RS485 or
RS422 31kHz Manchester or Bi-phase. The OSD8826T receiver provides adjustment free operation
over the full optical range of the unit.
The OSD8826R incorporates a high performance optical digital receiver for incoming video and data
signals, and a transmitter that outputs a digital optical signal consisting of one data channel. The unit
provides a constant video output level which is independent of link loss, and data section of the
OSD8826R is also adjustment free over all link lengths.
The OSD8826T and OSD8826R are available in two physical configurations: card or module. The
OSD8826R2 is a two-channel receiver card which accepts two independent OSD8826T communication
links. The card versions are designed to fit the 3RU-high 19” OSD370 or OSD350 chassis, which
allows multiple OSD card products to be conveniently powered from and located in the one chassis.
The module case versions are intended for isolated use and require an external power source.
The OSD8826 system can be used with any standard singlemode or multimode optical fiber over a
single fiber for transmission and reception.
1.1.2
APPLICATIONS
▲
High quality CCTV networks
requiring full duplex or reverse data
transmission between cameras and
their control centre
▲
Transportation communication
systems
▲
Safe city projects
1.1.3
FEATURES AND BENEFITS
▲
One way optic transmission of PAL,
NTSC or SECAM video plus one
duplex data channel and one forward
path transmission of a contact closure.
▲
Broadcast quality 10 bit video
maintained over all link lengths.
▲
Video bandwidth of 6MHz
▲
Remote control of Pan, Tilt and Zoom
for video surveillance
▲
Single fiber operation
▲
Receiver available either as a single
channel card (OSD8826R) or module
(OSD8826RC) or as a dual channel
card (OSD8826R2)
▲
Operating range of at least 5km on
multimode and 40km on singlemode
fiber, with longer distances possible
using optional optical devices
▲
Standard operation using multimode
or singlemode fiber: no need to
specify fiber type