MDR-3670: G.703 to ASI Network Interface Adapter.

FEATURES:

      Wide Range of G.703 to ASI conversions.
      E3 or DS3 operation with automatic DS3 De-framing.
      Reed Solomon correction.
      De-interleaving.
      De-scrambling.
      Packet length indication.

Brochure  

User Manual  

GENERAL:

The MDR-3670 is part of a family of data transcoders for converting between the commonly used MPEG2 Transport Stream formats in the broadcast industry for video distribution.

The MDR-3670 operates with either an E3 (34.368 Mb/s) or DS3 (44.736 Mb/s) G.703 rates.

There are several industry modes of encoding that can be decoded by the MDR 3670. They are loosely classified as follows:
          Standard: IRT MDT-3570, DDC-3480
          Upstream: Similar to above
          Downstream: Packet stuffed
          Compatible: 9 bit decoding, IRT MFC-3485

This range covers most other manufacturer's equipment.

Front panel switches allow Reed Solomon correction and/or the removal of interleaving and scrambling (energy dispersal). On board switches allow 204 to 188 conversion, after decoding.

The MDR-3670 is fabricated in IRT's standard Eurocard format and may be housed in a variety of IRT's frames.


TECHNICAL SPECIFICATIONS:

Input:
Type
1 x G.703, 75 Ω BNC connector.
G.703 Rate
E3 (34.368 Mb/s) or DS3 (44.736 Mb/s), link selectable.

Output:
Type
1 x ASI-C 75 Ω, 800 mVp-p, BNC connector.

Alarms:
Major
Relay NO/NC link selectable,
(Relay energised when Input Sync is obtained).
Minor
Relay NO/NC link selectable,
(Relay energised when there are no Reed Solomon Errors).

Power Requirements:
Voltage
28 Vac CT (14-0-14) or ±16 Vdc.
Power consumption
< 5.5 VA.

Other:
Temperature range
0 - 50°C ambient.
Mechanical
Suitable for mounting in IRT 19" rack chassis with input, output and power connections on the rear panel.
Finish:             Front panel
Grey background, black lettering & red IRT logo.
                       Rear assembly
Detachable silk-screened PCB with direct mount connectors to Eurocard and external signals.
Dimensions
6 HP x 3 U x 220 mm IRT Eurocard.

Supplied accessories
Rear connector assembly including matching connector for alarm output.



       



Due to our policy of continuing development, these specifications are subject to change without notice.