NanoClocks GL Digital Audio Genlock Masterclock

Rosendahl Nanoclocks GL:AUDIO CLOCK GENERATION The standard 44.1, 88.2 , 48 and 96 kHz audio clocks are generated directly from discrete crystal oscillators working in fundamental mode without DDS (direct digital synthesis) or PLL (phase locked loop) circuits in the clock signal path. This vintage technology is not as universal as today's digital clock synthesis circuits because it is limited to only one sample rate (+/- 50ppm) per crystal oscillator, but on the other hand it still provides the purest clock quality with lowest phase noise.Nanoclocks GL also generates -0.1% pull down sample rates using fractional division and a very high frequency PLL circuit. REFERENCE = INTERNAL Audio crystal oscillators are tuned to a TCXO timebase accurate to 0.2 ppm. REFERENCE = VIDEO Audio crystal oscillators are locked toexternal SD video syncs with 23.98, 24, 25 (PAL) or 29.97 (NTSC) fps orHD tri-level syncs with 23.98, 24, 25, 29.97, 50, 59.97 or 60 fps.All SD/HD video frame rates and standards are detected automatically. Where possible, audio clocks will also be phase locked to video v-syncs (requires a whole-number proportion of sample rate and frame rate). Two reference inputs provide automatic switchover in case of one reference signal fails. REFERENCE = AUDIO Audio crystal oscillators are tuned to external word clock or AES-11 DARS signals. Automatically follows 44.1, 48, 88.2, 96 kHz and -0.1% pull down sample rates. Lock range is +/- 50ppm. The audio reference signals are used to synchronise the internal audio crystal clock generators accordingly, so clock quality is not affected by incoming jittery reference signals. Select signal from input A or B manually or use the automatic switchover functionality. REFERENCE = DISTRIBUTION AMPLIFIER Word clock or AES11/ DARS signals on inputs A and B are directly routed to all 12 outputs. Detected sample rates are displayed and outputs are switched to word clock or AES11 levels according to the present input signal.