HDB900 - HD, SD 8 channel digital audio de-embedder with ‘TWINS’ dual channel function (3Gb/s upgradeable)

Description

The HDB900 is a HD SDI and SD SDI digital audio de-embedder. It is capable of extracting up to 4 AES/EBU digital audio channels (16 mono channels). The core of these modules consists of four de-embedder-blocks DeEmb_A, DeEmb_B, DeEmb_C and DeEmb_D. In front of these de-embedders are SDI channel selection muxes that allow for individual de-embedding out of the two SDI inputs. The delay blocks can be used in series for a single SDI 4 group de-embedder with up to 1 sec of video offset delay, or in parallel for 2 individual channels with each 2 group de-embedders and individual 500ms offset delay in a fully separate channel TWINS function. Each block is capable of de-embedding 4 audio selectable out of 16 channels from each input. The TWINS mode is a single command operation and controls 2 individual selection switches as can be seen in the block diagram.

In addition, four ADD-ON cards can be connected to create a routing matrix. The architecture of DeEmb_A to DeEmb_D blocks is identical. The local AES outputs can be controlled to adjust Phase, Gain and delay (on the fly).

 The HDB900 can be future upgraded to HDB990, GDB900 or GDB990. This allows for staged implementation of HD infrastructures and spread the cost over multiple budget years.

Specifications

• Dual (TWINS*) or single channel SDI mode
• 4 AES/EBU outputs (available with 110 Ohm and 75 Ohm connectors)
• 8 extra AES/EBU inputs through the Synapse bus
• 2 SDI inputs (with auto switch on carrier loss and switch back function)
• 2 SDI + embedded audio outputs
• Pre and post delay de-embedding
• 8 presets that configure all 16 output channels at once. controlled by GPI or ACP (Cortex)
• Audio level and phase control
• Audio offset delay up to 1300 ms
• Video offset delay up to one second (or 2x 500ms)
• 16 extra audio channels (4 groups) with ADD-ON card for additional audio outputs
• Peak detection 0, -6, -12 and -18dBFS
• Silence detection with threshold (-100 to -20dBFS) and time control (1 to 255 sec)
• Transparent for ATC time code RP188, RP196, RP215
• Locks to Tri-level, Bi-level syncs and SDI input
• Full control and status monitoring through the front panel of the SFR04/SFR08/SFR18 frame and the Ethernet port (ACP)
• Optional 1 or 2 fiber inputs, 1 or 2  fiber outputs or a fiber in and output (replacing 1 SDI in and output) on the I/O panel
• Optional relay bypass (BHX18 or BHX18D)