DN9652 Architect's & Engineer's Specification

The Dual Network Bridge shall provide bidirectional asynchronous sample rate conversion of up to seventy-two (72) simultaneous channels of 24-bit resolution digital audio, between two third party network module interfaces in a standard 1U high 19” rack mount chassis.

The Dual Network Bridge shall have one (1) Ethernet Control Port for the purposes of remote configuration from a computer web browser interface and the updating of internal software.

The Dual Network Bridge shall have two clock domains (identified as A & B), one for each third Party Network, separated by an Asynchronous Sample Rate Converter (ASRC). The Sample Rate Converter shall have a Bypass option with the facility to lock one of the clock domains to the other.

Each Network Clock domain shall support clock synchronisation to incoming clock via third party network module, Word Clock Input or Video Black Burst Input which shall support incoming video synchronisation signals in PAL/ SECAM/NTSC formats in Standard Definition (SD) and High Definition (HD) resolutions, as well as optionally slaving to the other clock domain if the Sample Rate Converter is bypassed.

The Word Clock Output shall be capable of being derived from either clock domain or the Word Clock Input.

The Dual Network Bridge shall have a precision clock reference provided by a temperature-controlled crystal oscillator (TCXO) with 1 part-per-million (1 ppm) stability.

The Dual Network Bridge shall have user-selectable functions for both clock domains to stop an output clock if the corresponding input clock fails, to propagate network failures across the ASRC for the purposes of automatic or manual redundancy switchover.

The Dual Network Bridge shall support data format word length truncation and dithering on data received and transmitted via the third party network module interfaces.

The unit shall be capable of operating from a 100 to 240V ±10%, 50 to 60Hz AC power source.

The Dual Network Bridge shall be the KLARK TEKNIK DN9652 and no alternative option is available.

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