1. Device overview 1.1. Front panel The connectors “Cat5 Connection 2“ are only available in the 64 channel version (ADX-64A-PRO). 1.2. Rear panel The connectors „ADAT 5-8/WC“ are only available in the 64 channel version (ADX-64A-PRO).
2.1. Digital snake (32 channels) The diagram below shows a typical application of the ADAT Multicore Extender: One Cat5 cable is used for both the transmission of 24 channels from the stage to the mix console, and 8 channels in the opposite direction.
Both devices are designed for maximum flexibility: The direction of data transmission can be selected individually for each ADAT connection. Thus, the ADX-32A can be operated in 32/0, 24/8, 16/16, 8/24 or 0/32 TX/RX channel configuration, and the ADX-64A-PRO can be...
Additionally, EMI is greatly reduced because the electric and magnetic fields surrounding the two wires cancel each other out. The technology used in the ADAT Multicore Extender (RS-485) has been used for a long time, e.g. for lighting applications (DMX) or harsh industrial environments (Profibus). The commonly used AES/EBU standard works in a similar manner, but is, due to its relatively low data rate, only able to transmit two audio channels over one pair.
On the other hand, when jitter occurs on an interface used for the transmission of the data (e.g. when used with an ADAT interface), it's called “interface jitter”. This kind is much less critical since it only has an audible effect if its value is so large that it prevents the proper detection of bits within the data stream (for AES/EBU, the specification allows a jitter value of ±20ns, which...
This would lead to signal loops causing undefined current flow. 6.2. Cat5 Connection 2 (ADX-64A-PRO only) Cat5 cable carrying ADAT connections 5-8 and the wordclock signal. Jacks “A” and “B” are electrically paralleled. Depending on the number of jacks used, the push button “Termination”...
(inner positive). The second module in the 64 channel version is internally supplied with power. 7.2. ADAT 1-4 ADAT Lightpipe inputs and outputs 1-4. The direction (TX or RX) must be set using the DIP switches, see 8.2. Transmission direction (ADAT 1-4).
The transmission direction (input or output) for ADAT connections 1-4 is set by the DIP-switches 1-4. Input (DIP switch in lower position = OFF): The ADAT connection is configured as input (the receiver is active). The received data is sent over the Cat5 cable.
8.4. Channel 5 mode selection (ADAT or Wordclock) The mode of operation of channel 5 is user selecteable. ADAT transmission: Set DIP switch #6 to “ON”. The direction can be set with DIP switch #1 (Output=“ON” , Input=“OFF”). The BNC wordclock jack is now disabled.
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The above configuration with only one cable end terminated is possible if the transmitter device is located at the other end of the cable and has the advantage of lowering the driver's load. However, if you have the ADAT Multicore Extender connected in the middle of the cable, both ends must be terminated.
9.2. Wordclock synchronization over ADAT Any ADAT signal can be used for wordclock synchronization as it carries an embedded clock signal. The master clock device outputs ADAT streams with the master clock timing embedded, and all slaves can extract the embedded wordclock from the stream. Please refer to your equipment's manual to ensure the appropriate wordclock source setting of the device.
Maximum number of ADAT Multicore Extenders on a daisy-chain Supported data formats ADAT Lightpipe ® up to 48kHz 24bit ADAT Lightpipe ® 96kHz 24bit (S/MUX, DS) (when using 2 optical connections per 8 channels) ADAT Lightpipe ® 192kHz 24bit (S/MUX4, QS) (when using 4 optical connections per 8 channels) ...
Tel. +41 22 550 05 42 13.3. About this document ADAT® is a registered Trademark of Alesis Corp. TOSLINK® is a registered Trademark of Toshiba Corp. EtherCon® is a registered Trademark of Neutrik AG All information provided here is subject to change without prior notice.
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