|
The IRT DDT-4210 transmitter and DDR-4211
receiver are modules designed principally for use as a
270 Mb/s SMPTE/EBU serial digital video fibre
optic transmission link, using 9/125µm single mode
fibre, with optical paths losses up to 31dB.
The transmit / receive system specifications apply to
all signal conditions, including the SMPTE 259M
pathological test sequence.
In addition, the link may be used for ASI transport
streams for use with MPEG compressed video
streams or other 270 Mb/s type data. On board links may also be set to transport STM-1 (155 Mb/s) type signals.
The transmitter features automatic input cable
equalisation and a choice of plug-in LASER modules
of various wavelengths (ordered separately).
LED indicators are provided for digital signal
presence, DC power and LASER output power out of
range.
|
The DDR-4211 receiver uses a PIN photodiode
detector with signal conditioning and reclocking
circuits. The data rate is factory set for 270 Mb/s
operation. Link settings allow STM-1 data rates (electrical and optical) to be set for interfacing with IRT's STM-1 interface cards.
Two serial digital outputs are provided. LED
indicators are provided for digital signal presence
and power.
Relay contact outputs are also provided for external
use of alarm signals on both modules.
An optional SNMP (Simple Network Management
Protocol) plug-in module is available, for each unit,
for remote monitoring when used in conjunction with
IRT's 4000 series frame fitted with SNMP capability.
The DDT-4210 and DDR-4211 are Eurocard
modules designed to fit IRT's standard Eurocard
frames as well as IRT's 4000 series frames for use
with IRT's SNMP system and may be used alongside any other of IRT’s analogue or digital Eurocards.
|
