MDC-4910:   SMPTE-310 to ASI Network Interface Adapter.

FEATURES:


      SMPTE-310M to ASI, ASI to SMPTE-310M on the one card.
      ATSC rates of 8 VSB and 16 VSB supported.
      Automatic Input equalisation up to 200m.

Brochure  

User Manual  

GENERAL:


The MDC-4910 is part of a family of network interface adapters for converting between the commonly used MPEG2 Transport Stream formats for video distribution in the broadcast industry.

With the MDC-4910 a SMPTE-310M type signal at either 8 VSB (19.393 Mb/s) or 16 VSB (38.785 Mb/s) rate is converted to an ASI type of signal for transport over an ASI link.

The MDC-4910 also does the reciprocal conversion from an appropriate ASI encoded signal back to the original SMPTE 310M signal.

The MDC-4910 can be used at either transmission end or receiving end. Both conversions operate independently from each other allowing the one card to be used in a bi directional link.

ASI input1 is automatically equalised for lengths of up to 200m of Belden 8281 or equivalent cable.

Front panel LEDs show when a valid SMPTE 310M signal or ASI signal is present and the rate at which it operates. A relay alarm indicates if there is an input data rate violation.

The MDC-4910 is designed to fit IRT's standard Eurocard frames and may be used alongside any other of IRT's Eurocards, as well as in conjunction with IRT's ASI interface cards.


NOTE 1: It is recommended that the SMPTE-310 input has a minimal cable length connected between it and the SMPTE-310 source to minimise input jitter (also applicable on output).


TECHNICAL SPECIFICATIONS:


Inputs:
Type 1
1 x SMPTE-310M 75 Ω, 800 mVp-p, BNC connector.
Data Rate
Biphase Mark encoded for 8 VSB (19.393 Mb/s), or 16 VSB (38.785 Mb/s).

Type 2
1 x ASI-C 75 Ω @ SMPTE-310M encoded rate, 800 mVp-p, BNC connector.
Data Rate
8 VSB (19.393 Mb/s), or 16 VSB (38.785 Mb/s).

Equalisation2
Automatic, better than 200 metres at 270 Mb/s for Belden 8281 or equivalent cable.

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

Type 2
1 x SMPTE-310M 75 Ω, 800 mVp-p, BNC connector.

Alarms:
Major
Open circuit on loss of sync on serial (SMPTE-310M) input, or loss of power.
Minor
Open circuit on no valid input ASI stream present, or loss of power.

Power Requirements:
Voltage
28 Vac CT (14-0-14) or 16 Vdc.
Power consumption
6 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.

NOTE:             2
It is recommended that the SMPTE-310 input has a minimal cable length connected between it and the SMPTE-310 source to minimise input jitter (also applicable on output).



       



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