Miranda DCO-1781-3RU 4 AES audio change-over w/ optional silent...

The DCO-1741/1781 is a 2/4 AES change-over. The switch is performed electronically by an internal router. In the event of a power failure, the signal is protected by the relays fitted on the rear module, maintaining the integrity of the selected signal at the output....
Manufacturer: Grass Valley
$1,462.00
Availability: In stock
SKU
DCO-1781-3RU
Manufacturer: Grass Valley

Miranda DCO-1781-3RU 4 AES audio change-over with optional silent switch - DCO-1781-3RU



The DCO-1741/1781 is a 2/4 AES change-over. The switch is performed electronically by an internal router. In the event of a power failure, the signal is protected by the relays fitted on the rear module, maintaining the integrity of the selected signal at the output. The DCO card allows switching as a regular router, or alternatively the module can perform an audio silent switch between sources using the silent switch software option. Input selection can be performed manually or automatically.

Key Features


  • Up to 4 AES on each input

  • Electronic switching with relay backup (on rear module)

  • Automatic mode using internal signal analysis with alarm parameters

  • Manual change-over by local frame controller, iControl, iControl Solo or GPI

  • GPI outputs give status of selected source for tallies

  • Alarm reporting to iControl facility monitoring and control system

  • GPI I/O (IN1, IN2, AUTO, BYPASS)

  • Optional silent switch function

  • Frame reference input

  • Audio level meter streaming

  • Emergency audio tone

Specifications

AUDIO INPUTS (4 AES per input)

  • Sampling freq.: 48 kHz ±100 ppm

  • Quantization: 16 to 24 BITS

  • All A inputs must be synchronized with each other.

  • All B inputs must be synchronized with each other.

  • AES3

    • Level: 0.2 to 7 Vp-p

    • Impedance:

      • Transformer balanced

      • 110Ω (bypass off)

      • >5 kΩ (bypass on)





  • AES3-id

    • Level: 0.2 to 2 Vp-p

    • Impedance:

      • 75Ω (bypass off)

      • >5 kΩ (bypass on)





  • Return loss: >15 dB up to 12 MHz

  • AUDIO OUTPUT (4 AES)

  • Sampling freq.: 48 kHz ±100 ppm

  • AES3

    • Level: 4 Vp-p

    • Impedance: 110Ω balanced



  • AES3-id

    • Level: 1 Vp-p

    • Impedance: 75Ω

    • Return loss: >15 dB up to 12 MHz




REFERENCE INPUT

  • Signal: URS for Densité


PROCESSING PERFORMANCE

  • Quantization: 24 bits

  • Sampling: 48 kHz, synchronous

  • Number of channels: 8

  • Latency:

    • 3 audio samples

    • 40 ns (direct mode)




ALARM PARAMETERS


  • AES audio alarm

    • AES carrier

    • No Lock

    • Parity

    • CRCC

    • Validity

    • Not 48 kHz



  • Audio type

    • PCM

    • Dolby-E

    • Dolby Digital AC 3

    • Non PCM



  • Overload

    • Level

    • Max

    • Min

    • Silence

    • Overload



  • Dynamic

    • Low dynamics

    • AES imbalance

    • AES phase

    • AES stereo width



  • Metadata

    • Program config

    • Dialnorm






MISCELLEANEOUS

  • Tone generator: 1 kHz sine wave interrupted on left channels (250 ms / 3s) EBU R49

  • Emergency audio clip: storage provided for one or two files, with a total duration from 11.3s (for stereo signal sampled at 48 kHz) to 45s (for mono signal sampled at 24 kHz)


ELECTRICAL

  • Power: 10W

Diagram

DCO-1781-3RU
Manufacturer: Grass Valley
More Information
ManufacturerGrass Valley
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