Home > DDA-4006 and DDA-4007 270 Mb/s ASI/SDI 8 O/P distribution amplifiers available from IRT Electronics

DDA-4006 and DDA-4007 270 Mb/s ASI/SDI 8 O/P distribution amplifiers available from IRT Electronics

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article image Distribution amplifiers

The DDA-4006 and DDA-4007 270 Mb/s ASI/SDI 8 O/P distribution amplifiers, IRT Electronics , provide users with a single standard module to cover a range of distribution and monitoring functions for ASI or SDI signals.

The DDA-4006 and DDA-4007 270 Mb/s ASI/SDI 8 O/P distribution amplifiers supersede the DVA-3006 and DVA-3007 and provide their functions together with the option of a Simple Network Management Protocol (SNMP) monitoring module for use with the IRT Electronics’ SNMP system frame.

As standard loop through techniques used in the analogue domain are unsuitable for the digital domain, most digital equipment comes with no facility to route the input signal to other locations. As a result, a DA is required at every point in the digital chain.

Serial digital signals also suffer deterioration over short cable distances. The DDA-4006 and DDA-4007 270 Mb/s ASI/SDI 8 O/P distribution amplifiers extend the working distances that can be achieved by equalising and re-transmitting the data mid route.

The DDA-4006 and DDA-4007 270 Mb/s ASI/SDI 8 O/P distribution amplifiers may also be used to provide input equalisation for devices not having this feature, as most un-equalised inputs only support cable lengths of less than 20 metres.

Frequent re-clocking of serial digital signals can lead to increases in jitter with resultant data errors. The DDA-4006 and DDA-4007 270 Mb/s ASI/SDI 8 O/P distribution amplifiers do not include re-clocking so as to minimise these errors, leaving re-clocking to be done by the receiving device. For applications requiring reclocking, the DDA-4007 distribution amplifier should be used.

An optional rear assembly, ZDA-4006RL (sold separately), provides a bypass relay to switch the input (SK1) to output 1 (SK2) in the event of a power failure. When this bypass rear assembly is used, the number of outputs is reduced to 6.

The DDA-4006 and DDA-4007 270 Mb/s ASI/SDI 8 O/P distribution amplifiers are designed to fit IRT Electronics’ standard Eurocard frame as well as IRT Electronics’ 4000 series frame for use with the IRT Electronics SNMP system and may be used alongside other IRT Electronics’ analogue or digital Eurocards.

The DDA-4006 and DDA-4007 270 Mb/s ASI/SDI 8 O/P distribution amplifiers have the following features:

  • For use as buffer or distribution amplifier
  • 8 x in-phase 270 Mb/s ASI or SDI non reclocked outputs
  • Automatic input equalisation to 250 metres
  • Automatic output muting on no input
  • Front panel monitoring output, signal presence LED and external alarm contacts
  • Optional plug-in SNMP monitoring module

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