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RME Audio ADI-648 User Manual
Summary of ADI-648
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User's guide adi-648 multichannel audio digital interface syncalign ® synccheck ® intelligent clock control tm steadyclock tm hi-precision 24 bit / 96 khz 64 channel madi / adat converter 16 x 16 matrix router midi embedded in madi firmware 1.5 or up madi 24 bit interface.
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2 user's guide adi-648 © rme contents 1 introduction.................................................................................................... 3 2 supplied contents ......................................................................................... 3 3 brief description and character...
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User's guide adi-648 © rme 3 1. Introduction with the adi-648 you have an incredibly versatile digital interface to your supply. What at first looks like a simple madi to adat format converter, turns out to be an extremely flexible prob- lem solver at a closer look. From small project studios to bro...
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4 user's guide adi-648 © rme 4. Technical specifications • power supply: internal, 100-240 v ac, 10 watts • dimensions: 483 x 44 x 205 mm • weight: 2 kg 4.1 inputs madi • coaxial via bnc, 75 ohm, according to aes10-1991 • high-sensitivity input stage ( • optical via fddi duplex sc connector • 62.5/1...
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User's guide adi-648 © rme 5 4.2 outputs madi • coaxial via bnc, 75 ohm, according to aes10-1991 • output voltage 600 mvpp • output voltage 1 vpp / 1.5 vpp optional, via dip switch • cable length: more than 100 m • optical via fddi duplex sc connector • 62.5/125 and 50/125 compatible • cable length:...
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6 user's guide adi-648 © rme 5. First usage 5.1 quick start the user interface of the adi-648 is characterized by a clearly structured architecture and an unambiguous labelling of the front and rear sides. The device can thus be used easily without a manual, because numerous leds show the state of t...
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User's guide adi-648 © rme 7 5.3 operating the adi-648 join us for a small 'tour de adi', starting on the left side at the madi to adat converter. Con- figuration starts with choosing the input, bnc or optical. The state of the input signal is dis- played by 12 leds. Shown are active input, automati...
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8 user's guide adi-648 © rme 6. The madi to adat converter 6.1 general this part of the adi-648 converts madi to adat optical. Madi offers 64 channels of 24 bit audio at up to 48 khz sample rate, and 32 channels at up to 96 khz. Transmission happens over a single line, either coaxial (bnc) or fiber ...
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User's guide adi-648 © rme 9 6.4 outputs adat optical the adi-648 provides 8 outputs in adat optical format. They are fully compatible to all adat optical inputs. A usual toslink cable is sufficient for connection. With the matrix router de-activated, all madi channels are copied to the 8-channel ad...
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10 user's guide adi-648 © rme 7. The adat to madi converter 7.1 general this part of the adi-648 converts adat optical to madi. Adat optical carries 8 channels of 24 bit audio at up to 48 khz sample rate, and 4 channels at up to 96 khz. Transmission is done via a single optical line (toslink). The l...
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User's guide adi-648 © rme 11 7.4 outputs madi at the rear side of the adi-648 there are two madi outputs. The bnc output is built according to aes10-1991. The output's impedance is 75 ohm. The output voltage will be 600 mvpp when terminated with 75 ohm. Using two dip switches on the rear of the uni...
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12 user's guide adi-648 © rme int. For internal, 44.1 khz or 48 khz sampling rate is available. Note: the key 96k frame does only affect the the format of the madi output, not channel distribution or sample rate of the adat outputs. For the internal clock setting it is mandatory that the clock rate ...
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User's guide adi-648 © rme 13 8.3 word clock input and output steadyclock guarantees an excellent performance in all clock modes. Its highly efficient jitter suppression refreshes and cleans up any clock signal, and provides it as reference clock at the bnc output (see section 12.3). Input the adi-6...
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14 user's guide adi-648 © rme 9. Word clock 9.1 operation and technical background in the analog domain one can connect any device to another device, a synchronization is not necessary. Digital audio is different. It uses a clock, the sample frequency. The signal can only be processed and transmitte...
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User's guide adi-648 © rme 15 9.2 cabling and termination word clock signals are usually distributed in the form of a network, split with bnc t-adapters and terminated with resistors. We recommend using off-the-shelf bnc cables to connect all devices, as this type of cable is used for most computer ...
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16 user's guide adi-648 © rme 10. Midi 10.1 midi transmission madi allows for a transmission of 64 audio channels over long distances with a single line – perfect. But what about midi? Be it remote control commands or sequencer data, in practice only a single madi line will not suffice. Therefore th...
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User's guide adi-648 © rme 17 10.3 remote control software a tiny windows software can be downloaded for free from the rme website. It can use any existing midi port within the system to perform remote control and status requests of all adi- 648 via a simple mouse click. Most appealing is the combin...
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18 user's guide adi-648 © rme 11. Special modes 11.1 madi to madi converter madi has been used for quite some time now and therefore not all interfaces from different manufacturers are compatible with each other. An ams neve logic dfc e. G. Only accepts the 56 channel input format and when a 64 chan...
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User's guide adi-648 © rme 19 12. Technical background 12.1 ds - double speed when activating the 96k frame, the madi output of the adi-648 operates at double sample rate. The internal clock 44.1 khz turns to 88.2 khz, 48 khz to 96 khz. The internal resolution is still 24 bit. Sample rates above 48 ...
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20 user's guide adi-648 © rme 12.2 madi basics madi, the serial multichannel audio digital interface, has been defined already in 1989 as an extension of the existing aes3 standard following several manufacturers' wish. The format also known as aes/ebu, a balanced bi-phase signal, is limited to two ...
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User's guide adi-648 © rme 21 12.3 steadyclock the steadyclock technology of the adi-648 guarantees an excellent performance in all clock modes. Its highly efficient jitter suppression refreshes and cleans up any clock signal, and pro- vides it as reference clock at the word clock output. Usually a ...
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22 user's guide adi-648 © rme 13. Controls and connectors front left part front right part power rear matrix router signal source bnc optisch status display error sync audio matrix router on/off input/output select reset clock source adat madi clock section status display input sync audio clock sour...
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User's guide adi-648 © rme 23 14. Block diagram (excluding midi).
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24 user's guide adi-648 © rme 15. Midi implementation chart adi-648 15.1 basic sysex format value name f0h sysex header 00h 20h 0dh miditemp manufacturer id 64h model id (adi-648) 00h..7eh, 7fh device id. 7fh = broadcast (all ids) mm message type nn parameter number (see table 1) oo databyte f7h eox...
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User's guide adi-648 © rme 25 table 1 no. Name request value set value value response databytes 00h madi input select x x x 1 byte, 0 = bnc, 1 = optical 01h madi input state x x 1 byte, 0 = normal operation, 1 = redundancy mode 02h madi sync state x x 1 byte, 0 = error, 1 = lock, 2 = sync 03h madi a...
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26 user's guide adi-648 © rme table 2 1st byte bit 0 input 1 audio indication 1st byte bit 1 input 2 audio indication 1st byte bit 2 input 3 audio indication 1st byte bit 3 input 4 audio indication 2nd byte bit 0 input 5 audio indication 2nd byte bit 1 input 6 audio indication 2nd byte bit 2 input 7...
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User's guide adi-648 © rme 27 ce this device has been tested and found to comply with the limits of the european council direc- tive on the approximation of the laws of the member states relating to electromagnetic com- patibility (emvg) according to en 55022 class b and en50082-1. Fcc compliance st...