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The IRT DVT-3610 and DVR-3610 are transmit and
receive modules designed principally for use as a
SMPTE292M 1.485 Gb/s serial digital video Fibre
Optic transmission link, using 9/125 single mode
fibre for path lengths with path attenuation of 20 dB
or less. This enables the use of space saving fibre
optic cable for reliable transmission of digital video
signals over lengths greater than can be provided with
coaxial cable. The transmit / receive system
specifications apply to all signal conditions, including
the SMPTE 292M pathological test sequence.
The DVT-3610 transmitter features an input circuit
with automatic cable equalisation for Belden 8281 (or
equivalent) coaxial cable followed by a 1300nm
LASER transmitter.
The DVR-3610 receiver uses a PIN photodiode
detector preamplifier module, signal conditioning and
a reclocking circuit for the 1.485 Gb/s data rate, with
bypass of the PLL reclocking circuit for other data
rates which allows the link to be used for the 270
Mb/s SDI and ASI signals. Two serial digital outputs
are provided from the transmission link, one in phase
output on the rear and one inverted signal monitoring
output on the front panel of the receiver.
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On the DVT-3610 transmitter LED indicators on the
front panel indicate the presence of signal, end of
cable equaliser range, loss of laser power and
presence of +5V DC power. A relay contact output
for remote indication will indicate failure of the laser
operation.
On the DVR-3610 receiver LED indicators on the
front panel indicate PLL lock at 1.485Gb/s, PLL
bypass for 270 Mb/s peration, signal presence and
presence of +5V DC power. A relay contact output
for remote indication will indicate loss of signal.
The module comes standard with SC/PC style
connectors. Other connector types available at time of
ordering.
The DVT-3610 and DVR-3610 are Eurocard
modules designed to mount in the IRT family of
Eurocard frames.
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