HEB900 - HD, SD 8 channel enhanced digital audio embedder with ‘TWINS’ dual channel function (3Gb/s upgradeable)

Description

The HEB900 is a HD SDI and SD SDI digital audio embedder. It is capable of inserting or appending up to 4 free-running AES/EBU digital audio channels (16 mono channels). The core of these modules consists of four embedder-blocks Emb_A, Emb_B, Emb_C and Emb_D and 2 delay blocks. These blocks can be used in series for a single SDI 4 group embedder with up to 1 sec of video offset delay, or in parallel for 2 individual channels with each 2 group embedders and individual 500ms offset delay in a fully separate (clock lock*) channel TWINS function. Each block is capable of embedding 4 audio channels into one group, which gives a total of 16 audio channels into four (or 2x2) groups. The TWINS mode is a single command operation and controls 4 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 Emb_A to Emb_D blocks is identical. The local AES inputs can be controlled to adjust Phase, Gain and delay (on the fly).

The HEB900 can be future upgraded to HEB990, GEB900 or GEB990. This allows for staged implementation of HD infrastructures and spread the cost over multiple budget years.

Specifications

•  2 SDI inputs (with auto switch on carrier loss, and switch back fun

• Compatible with the following input formats (auto selecting)

• 1080i/59.94 1080i/50 1035i/59.94  720p/59.94  720p50 720p30 720p25 720p24 SD525 SD625

• Dual offset audio delay adjustable between 0 and 500ms
• Dual (TWINS) or single channel SDI mode when sources are clock locked (not phase locked*)
• 4 AES/EBU inputs with sample rate converter (available with 110 Ohm and 75 Ohm inputs)
• AES/EBU inputs accept synchronous streams like Dolby E and asynchronous up to 96kHz sampling via the built in Sample Rate Converters.
• Auto SRC-off for bitstream sources like Dolby E
• 8 extra AES/EBU inputs through the Synapse bus
• 2 (2x1) SDI + embedded audio outputs
• 8 presets that configure all 16 input channels at once. controlled by GPI or ACP (Cortex)
• Append and overwrite modes
• Audio level and phase control
• Audio offset delay up to 3000 ms
• 16 extra audio channels (4 groups) with ADD-ON card for input multiplexing
• 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 or 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)