Flexible Synchronisation
DN9650 supports 24 bit audio operation at 48 kHz and 96 kHz independently in both the AES50 domain and the third party network domain. If the on-board oscillator (AES50 internal clock) is selected, then all three AES50 ports can either be set to globally operate at either 48 kHz or 96 kHz. If AES50 external clock is selected as the clock source, then each AES50 port can be set to provide 24 bidirectional channels at either 48 kHz or 96 kHz sample rate on an individual basis.
Word clock input and output connections plus a black burst horizontal video sync input are provided on BNC connectors, with the latter supporting PAL, SECAM and NTSC formats in standard defi nition and high definition 720P, 1080P and 1080i formats. The word clock output can be derived from the AES50 clock domain, the third party network clock domain or the word clock input.
DN9650 features a precision “AES Grade 1” reference temperature-compensated clock oscillator with 1 part-per-million (ppm) stability which is used as the AES50 internal clock source. This highly accurate clock source can be used as the reference clock for digital audio systems, providing a very defi ned sound image free of jitter and other digital clocking error artefacts.
The AES50 domain can be synchronised to the incoming AES50 external clock signal, the AES50 internal clock, the word clock input or the video black burst video sync input.
The third party network domain can be synchronised to the external network clock (with or without word clock synchronisation), the network module onboard clock, the word clock input or the black burst video sync input, as well as optionally slaving to the AES50 clock domain if the ASRC is bypassed.