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4464A SDI to Analogue Composite Video & Audio DAC

4464A SDI to Analogue Composite Video & Audio DAC

The 4464A SDI to analogue composite video & audio DAC extracts two balanced stereo audio pairs from any group in the ancillary data space of a 270Mb/s SDI signal and provides broadcast quality composite video and analogue audio outputs.

Analogue audio outputs are converted by a 24 bit DAC (sampled at 20 or 24 bits dependant on embedded audio format). De-embedding conforms to SMPTE 272M and allows audio to be extracted from any of the four groups.

Composite video is converted using a 10-bit DAC with 4x oversampling. Anti-aliasing filters and precision DC restoration provide the kind of conversion previously only available in rack mount systems.

It is housed in an extremely compact and rugged aluminium case and is suitable for both field and studio applications.

The unit requires an external power supply or a rack mounting frame. Please see MiniBlox Accessories.

Key features

  • 20 or 24 bit de-embedding
  • AdExtracts two balanced analogue audio stereo pairs from any group
  • High quality 24 bit audio DAC
  • Automatic detection of 525/625 SDI
  • justable full scale output levels to meet all international standards
  • LEDs show group status and input signal presence
  • Automatic input cable equalisation to over 350m
  • 10-bit video DAC with 4x over-sampling
  • Compact and rugged design
  • Locking connector for PSU

Control switches

  • Audio group select
  • Output level adjustment
  • PAL N or NTSC Japan selection

Technical Specifications
Video Specification
SDI video input
StandardsSMPTE 259M 270Mb/s 525/625 SDI
Connectors75 Ohm BNC
Signal level800mV p-p ±10% (terminated)
Return loss>18dB up to 270MHz
Cable equalisation> 350m automatic (Belden 8281)
Analogue video output
StandardsComposite PAL (B, D, G, H, I), PAL N, NTSC USA & Japan
Connector75 Ohm BNC
Signal level1V p-p +10%
DC offset±50mV
Return loss>36dB to 5.5MHz
Audio specification
Analogue audio input
StandardBalanced analogue
Number2 stereo pairs
Impedance<50 Ohms
Output levelMax 0dBFS=+24dBu/ Min 0dBFS=+8.5dBu
Maximum level+24dBu into 10KOhms
ConnectorRemovable screw terminals
Audio de-embedding
StandardsSMPTE 272M
Embedding20 or 24 bits
Electrical Specification
Power810mA @ 6V
ConnectorLocking 2.5mm jack (centre +ve)
Other Specifications
LEDsShow group status and signal presence
Size (mm)63.5 x 84 x 30 plus connectors
Temperature0°C to 40°C
Humidity80% max (non condensing)
Description      Each:
Price Qty
DTL 4464AMiniBlox SDI to analogue composite video & audio DAC£775.00
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