Optical Systems Design OSD8327 Series, Руководство оператора

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OPTICAL SYSTEMS DESIGN
DOC ID: 10116601
OSD8327 OPERATOR MANUAL
PAGE 4
1 TECHNICAL SUMMARY
1.1 BRIEF DESCRIPTION
1.1.1
OVERVIEW
The OSD8327 series is a high-quality fiber optic serial digital video (SDI) and data transmission
system. The system consists of the OSD8327T transmitter and the OSD8327R receiver, which are
designed to be used as a pair to reliably transport SDI and duplex serial data over fiber for long
distances using 1310nm, 1510nm and CWDM wavelengths. The OSD8327 pair is suitable for point to
point applications.
The OSD8327T accepts one HD/SDI video input signal. It has a SDI equalizer to effectively
compensate for coaxial cable losses such as the Belden 1694A cable. This allows flexibility for
permanent and temporary installations when SDI source is some distance away from the unit. The user
can disable the equaliser with a toggle switch mounted on the front panel.
Both the OSD8327T and OSD8327R have built-in user bypassable automatic reclocking. The units will
lock at 270Mbps, 1.485Gbps and 2.97Gbps. The user can disable the reclocker with a toggle switch
mounted on the front panel. The OSD8327R has HD/SDI received optical power LED indicators on the
front panel displaying <0dBm, <-6dBm, <-12dBm, <-18dBm and <-24dBm. The OSD8327T and
OSD8327R transmit and receive duplex serial data. Supported data are 2 and 4-wire RS485, TTL,
RS422, Manchester, Biphase and RS232 operation from DC to 1Mbps.
1.1.2 APPLICATIONS
▲
Any digital broadcast application
such as studio signal routing and
temporary OB or studio links
requiring HD/SDI transmission plus
duplex serial data
▲
Very high performance surveillance
networks
1.1.3
FEATURES AND BENEFITS
▲
Basic functionality is that of OSD’s
well established OSD8327T/
OSD8327R HD/SDI link plus the
OSD138 multi-protocol serial data
link
▲
2 and 4-wire RS485, TTL, RS422,
Manchester, Biphase and RS232
operation from DC to 1Mbps
▲
Available with built in user
bypassable automatic reclocking at
270Mbps, 1.485Gbps and 2.97Gbps
▲
Operates from 19.4Mbps to 2.97Gbps
in non-reclocked mode
▲
Compatible with SMPTE 310M,
292M, 259M, 297M, 372M and 424M
▲
Automatic equalisation of up to 350m
@ 270Mbps and 140m @ 1.485Gbps
and 70m @ 2.97Gbps of Belden
1694A cable
▲
Immune to pathological signals
▲
Capable of operation over more than
30km
▲
Capable of running off any
unregulated supply from 10 to 28V
DC
▲
Indication of HD/SDI operating rate