Optical Systems OSD840 SERIES, Руководство оператора

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OPTICAL SYSTEMS DESIGN
DOC ID: 10104804.doc
OSD840 OPERATOR MANUAL
PAGE 3
1 TECHNICAL SUMMARY
1.1 BRIEF DESCRIPTION
1.1.1 OVERVIEW
The OSD840T modem consists of an optical transmitter section which transmits a video signal plus
data, two audio and Ethernet signals in digital format as well as an optical receiver section for similar
data, audio and Ethernet signals transmitted to the camera for control and communication purposes.
The OSD840T control signal receiver provides adjustment free operation over the full optical range.
The OSD840R incorporates a high performance optical digital receiver for incoming video, data, two
audio and Ethernet signals and a transmitter, which outputs a digital optical signal consisting of two
audio signals and four data channels. It is designed to be used with the OSD840T. The OSD840R
receiver provides a constant video output level, which is independent of link loss. The audio/data
section of the OSD840R is also adjustment free over all link lengths. Audio and data signal interface
levels and impedance’s are the same as those of the OSD840T.
1.1.2 APPLICATIONS
V
High quality CCTV networks requiring
full duplex Ethernet, data and/or audio
transmission between cameras and either
control centre
V
Extremely high quality video
conferencing
V
Broadcast television systems
V
Transportation communication system
1.1.3 FEATURES AND BENEFITS
V
One way optic transmission of PAL,
NTSC or SECAM video plus full duplex
transmission of
•
One 10/100 Base-T Ethernet channel
•
Two audio channels
•
Three data channels
•
One relay contact channel
V
Studio quality 10 bit video and 24 bit
audio
V
Video bandwidth of 10MHz
V
Remote control of Pan, Tilt and Zoom for
video surveillance
V
Transmission of alarm and control signals
from the camera site
V
Full duplex 2-wire audio intercom with
100Hz to 5kHz bandwidth and associated
on hook/off hook signaling with industry
standard RJ11 connector
V
Operating range of at least 3km on
multimode fiber, depending on optical
devices
V
Video inputs have 3dB overload
capability and can be equalised for up to
300m of coaxial cable