DADA-VF

Distribute AES audio anywhere

The DADA-VF is a dual digital audio distribution amplifier, ideal for use in all broadcast areas where AES signals need to be distributed.

The DADA-VF can be set to reclock to provide high protection and correct unstable AES inputs. Alternatively the reclocking can be switched off where the quality of the AES inputs is known or for Word Clock distribution.

This flexible product includes support for 110 ohm and 75 ohm input and output impedance, as well as supporting a range of input sampling frequencies from 32kHz to 192kHz, with automatic detection of sample rate.

Configure your inputs and outputs

The DADA-VF can be configured either as a dual channel device with two inputs and up to four outputs of each channel, or alternatively as a single channel device with one input and up to eight outputs. When used as a dual channel device it can fit up to 40 channels in 3U.

If you're using 110 ohm AES you'll get four outputs of each channel with the single slot VR21 frame rear module. If you're using 75 ohm AES, you can select either the single slot VR20 rear module to get three outputs of channel 1 and two outputs of channel 2, or the double slot VR22 for the maximum outputs (four outputs of each channel).

Detect system faults

Audio silence detection can help alert you to system faults.

A delay and threshold before an alarm is asserted can be set to prevent false alarming during quiet audio periods. An audio level check is performed for AES 1 and AES 2, and if the audio signal level falls below the selected level for a period of time from two to 120 seconds, then an alarm is triggered. The audio silence level setting can be selected from -48dBFS, -54dBFS, -60dBFS, -66dBFS, -72dBFS, -78dBFS, -84dBFS and -90dBFS.

Remote control

All control is done remotely. The DADA-VF is Crystal Vision's first digital audio DA to include remote control and monitoring, with the options including an integrated control panel on the Vision frame, the VisionPanel remote control panel, our ASCII and JSON protocols, SNMP and the VisionWeb web browser control. Try the DADA-VF VisionWeb demo...

The DADA-VF features remote selection of dual or single channel, reclocking or non-reclocking, 110 ohm or 75 ohm input and output and the silence indication delay and threshold. There is remote monitoring of input presence, audio silence and sample rate for each channel.

Save rack space

Fitting in the standard Vision frames (currently available in 3U size), the DADA-VF is a space-saving 96mm x 325mm card that sits in one frame slot - allowing up to 20 DAs in 3U, depending on the rear module fitted.

MECHANICAL

Standard Vision card 96mm x 303mm (96mm x 325mm including finger pull)

Weight: 150g

Power consumption: 4 Watts

AUDIO INPUTS

Two AES inputs (16, 20 or 24 bit)

110 ohm (balanced) D-Type or 75 ohm (unbalanced) BNC

32kHz to 192kHz input with optional reclocking

Supports Word Clock distribution (no reclocking)

Standards supported for balanced and unbalanced audio: AES3-2009 parts 1 to 4

AUDIO OUTPUTS

Outputs 1-4 always from input 1

Outputs 5-8 selectable to come from either input 1 or input 2

Up to four AES outputs per channel when configured as dual channel device, depending on impedance and frame rear module used: three outputs of channel 1 and two outputs of channel 2 with single slot VR20 (75 ohm), four outputs of each channel with single slot VR21 (110 ohm) and four outputs of each channel with VR22 (75 ohm)

Up to eight AES outputs when configured as single channel device, depending on impedance and frame rear module used: five outputs with single slot VR20 (75 ohm), eight outputs with single slot VR21 (110 ohm) and eight outputs with double slot VR22 (75 ohm)

DELAY THROUGH BOARD

Less than 100us with reclocking enabled. Delay through board is reduced when not reclocking

AUDIO SILENCE

An audio level check is performed for AES 1 and AES 2. The audio silence level setting can be selected from -48dBFS, -54dBFS, -60dBFS, -66dBFS, -72dBFS, -78dBFS, -84dBFS and -90dBFS. If the audio signal level falls below the selected level for a period of time from 2 to 120 seconds, then an alarm is triggered. AES 1 and AES 2 share the same silence time and threshold settings. The audio on the channels must be continuously silent for the full period – a single non-silent sample restarts the delay period

LED INDICATION OF:

Power okay

REMOTE CONTROL

Control from integrated control panel on Vision frames and remote panel

VisionWeb Control is available via the web server on the frame and allows control and monitoring using a standard web browser on a computer, tablet or phone

SNMP monitoring and control available as standard

Control using ASCII and JSON protocols

Remote control of dual channel/single channel mode selection, reclocking/non-reclocking, silence indication time delay and threshold, 110 ohm balanced/75 ohm unbalanced input termination and 110 ohm balanced/75 ohm unbalanced output termination

Remote monitoring of input presence, audio silence and sample rate (32, 44.1, 48, 96 and 192 kHz) for AES 1, and input presence, audio silence and sample rate (32, 44.1, 48, 96 and 192 kHz) for AES 2

NB. No board edge control available

 

Signal inputs and outputs are accessed by using an appropriate rear module.

The Vision rear modules slot on at the back of the frame and typically feature BNC, Micro BNC, D-Type and LC fibre connectors.

There are three rear modules available for the DADA-VF...

VR20 rear module label and connections

VR21 rear module label and connections

VR22 rear module label and connections

For more visual technical information, download the DADA-VF block diagram.

First you need the 96mm x 325mm card...

DADA-VF

Dual channel digital audio distribution amplifier with up to four outputs per channel

Next select your frame...

Vision 3

3U frame with integrated control panel and smart CPU for up to 20 Crystal Vision cards from the Vision range. Includes two PSU3-VF power supplies for redundancy. Allows Ethernet connection to a PC

You need a rear module to access your inputs and outputs...

VR20

Single slot frame rear module. Allows 20 DADA-VF in 3U. Uses BNCs. Gives access to two 75 ohm AES inputs with three 75 ohm AES outputs of the first channel and two of the second

VR21

Single slot frame rear module. Allows 20 DADA-VF in 3U. Uses D-Types. Gives access to two 110 ohm AES inputs with four 110 ohm AES outputs of each channel

VR22

Double slot frame rear module. Allows ten DADA-VF in 3U. Uses BNCs. Gives access to two 75 ohm AES inputs with four 75 ohm AES outputs of each channel

Finally - control. Use the frame's integrated control panel, the VisionWeb web browser control or SNMP (both included in the frame for free), or alternatively order the item below...

VisionPanel

3U Ethernet remote control panel with touch screen

 

Users of the DADA digital audio distribution amplifiers in the Vision and Indigo ranges include...

4KXL (UK) Advanced System Integrated Co., Ltd. (Taiwan) Andrew Biller (UK) AVC (UK) Bắc Ninh TV (Vietnam) BBC (UK) BBC Millbank (UK) BBC Northern Ireland (UK) BBC Studioworks (UK) BEC Multimedia (Thailand) Benchmark Broadcast Systems (India) BFE Studio (Austria) British Telecom (UK) Channel 4 (UK) Coronation Street/ITV Studios (UK) Custom Consoles (UK) CVP (UK) Czech TV (Czech Republic) dB Broadcast (UK) Dega Broadcast Systems (UK) DigiTurk (Turkey) Doordarshan Kendra (India) E to E (UK) Emmerdale/ITV Studios (UK) ENGs – Electronic News Gathering Services (Greece) FAL Systems (UK) Fountain Studios (UK) Fox International Channels Philippines, Inc. (Philippines) Gems TV (India) Gems TV (UK) Giga-Com (UK) Glocom (UAE) Gold Coast Video (USA) Grupo RBS (Brazil) Hai Duong Radio and Television Station (Vietnam) HD Vietnam (Vietnam) Hitachi (UK) INA TV (Greece) Indira Ghandi National Open University (India) Interspot (Austria) IPE (UK) ITFC (UK) ITV (UK) KERO (USA) Kholoud Telecommunications and Broadcast Solutions (Jordan) Lime Pictures (UK) Major Oak Productions (UK)

MCOT (Thailand) Media Broadcast Technology (Vietnam) MediaGuru (India) Megahertz Broadcast Systems (UK) MTV (UK) ORF (Austria) ProSiebenSat.1 Media (Germany) Puls 4 (Austria) Radio Clyde (UK) Radio Televisyen Malaysia (Malaysia) Rentak Setia (Malaysia) Royal Opera House (UK) RTVS (Slovakia) Satcom Scientific, Inc. (USA) Show TV (Turkey) Siemens (UK) Studios A/S (Denmark) Televideo (UK) The First Baptist Church of Panama City (USA) The National Stadium Warsaw (Poland) The One Show (UK) Triple V Broadcast (Thailand) TRT (Turkey) TrueVisions Group Company Limited (Thailand) TV AlHijrah (Malaysia) Universal Media Services (USA) University of York (UK) Viacom International Media Networks (UK) Vizrt (Austria) VSC Design (UK) Westminster Live (UK) William Hill (UK) WIN Television (Australia) WXXV-TV (USA)