User manual LUCID AUDIO SRC9624

[. . . ] SRC9624 High Definition Sample Rate Converter User's Guide TABLE OF CONTENTS Introduction Operator Safety Summary Fast Setup Product Description SRC9624 Front Panel SRC9624 Rear Panel 7 8 9 15 16 17 1 2 4 Section 1 Section 2 Section 3 Section 4 Section 5 Section 6 Section 7 Section 8 Using the SRC9624 Specifications Warranty and Service Declaration of Conformity Rev A. 01, March 2000 Part number 53SR960A01 Specifications subject to change without notice. Lucid is a registered trademark of Symetrix, Inc. Mention of third-party products is for informational purposes only and constitutes neither an endorsement nor a recommendation. Lucid assumes no responsibility with regard to the performance or use of these products. [. . . ] If you were to set the output rate to 48k, the signal will actually be sent at a 24 kHz frame rate, a format which is not generally used. Input A Source The INPUT A switch selects the desired source connection for INPUT A. The INPUT A STATUS LEDs monitor certain bits in the digital audio stream--pro or consumer, and audio 5 or non-audio (e. g. , AC3). These bits are fed through the unit to the output. If the selected input is not present, the input A source LED flashes. Input B Source The INPUT B switch selects the desired source connection for Input B, either XLR, coaxial, or TOSLINK. The INPUT B STATUS LEDs will monitor certain bits in the digital audio stream--pro or consumer, and audio or non-audio (e. g. , AC3). These bits are fed through the unit to the output. If the selected input is not present, the Input B source LED flashes. Output Sample Rate The OUTPUT SAMPLE RATE switch determines the sample rate of the digital audio output on both outputs A and B. For word clock input, AES11 Sync input and Input A input, the selected sync source's LED will flash if a valid clock signal is not present on that connector. For the internal clock frequencies, the selected sync source's LED illuminates. Output Dither This switch determines the word length of all outputs. Settings of 20-bit or 16-bit indicate that the output signal has been dithered, using triangular PDF dithering, to these word lengths. 6 PRODUCT DESCRIPTION - SRC9624 FRONT PANEL SECTION 4 Feature ROUTING Description LEDs indicate the current signal routing. The toggle switch moves the selection up or down. Independent Distribution 96 kHz Dual AES (source) Input A drives Output A, Input B drives Output B. This could be a sync-only signal or it could be a digital audio signal (the audio portion is ignored). WORD IN AES11 Digital Output A and B The two sets of outputs are driven separately and there is no interaction between the connectors. Connect to any or all, as required by your application. Signals appearing at these outputs vary according to the setting of the ROUTING selector switch. OPTICAL (S/PDIF) AES3 Digital Input A and B The digital inputs are all separate; any or all may be connected. The actual connector used as the signal source depends on the setting of the INPUT A SOURCE or INPUT B SOURCE selector switches. Input A may also be used as a sync or sample rate source. [. . . ] Cable Length Limitations AES3-1992 states that the AES3 data format is intended for use with shielded twisted-pair cable of conventional design over distances of up to 100-meters at sample rates of up to 50 kHz. Beyond this length, special cable, equalization, or repeaters may be needed. You can use the SRC9624's dual-AES connection to work around this limitation. At 44. 1 kHz and 48 kHz this transmission format reduces the amount of data presented to each cable, which then allows you to violate the 100-meter limit using ordinary cables. 13 References 1. [. . . ]