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User's Guide
ADI-642
Multichannel Audio Digital Interface
TM
SyncAlign
TM
SyncCheck
TM
Intelligent Clock Control
TM
SteadyClock
Hi-Precision 24 Bit / 192 kHz
MADI - AES/EBU Interface
8-Channel / 64-Channel Format Converter
Analog 24 Bit / 192 kHz Stereo Monitor
72 x 74 Matrix Router
MIDI embedded in MADI
RS232 embedded in MADI
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Table of Contents
Related Manuals for RME Audio ADI-642
Summary of Contents for RME Audio ADI-642
- Page 1 User's Guide ADI-642 Multichannel Audio Digital Interface SyncAlign SyncCheck Intelligent Clock Control SteadyClock Hi-Precision 24 Bit / 192 kHz MADI - AES/EBU Interface 8-Channel / 64-Channel Format Converter Analog 24 Bit / 192 kHz Stereo Monitor 72 x 74 Matrix Router MIDI embedded in MADI RS232 embedded in MADI...
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Page 2: Table Of Contents
11.4 RS232 ..............23 Application Examples 12.1 Digital AES/EBU Breakout box ......24 12.2 Digital AES/EBU Multicore ........25 12.3 MADI to MADI Converter ........27 12.4 AES Patchbay and Splitter........27 12.5 MADI Coax/Optical Converter......27 12.6 MADI Merger............27 12.7 MADInet ...............28 User's Guide ADI-642 © RME... - Page 3 14.4 MADI Basics ............36 14.5 SteadyClock............37 Block Diagram............38 MIDI Implementation Chart 16.1 Basic SysEx Format ..........39 16.2 Message Types ........... 39 16.3 MADI Input State – Redundancy Mode ....39 16.4 Table ..............40 User's Guide ADI-642 © RME...
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Page 4: Important Safety Instructions
When mounting in a rack, leave some space between this device and others for ventilation. Unauthorized servicing/repair voids warranty. Only use accessories specified by the manufacturer. Read the manual completely. It includes all information necessary to use and operate this device. User's Guide ADI-642 © RME... -
Page 5: General
User's Guide ADI-642 General User's Guide ADI-642 © RME... -
Page 6: Introduction
The unique Intelligent Clock Control (ICC) allows for a flexible use with internal clock (44.1 up to 192 kHz), external word clock or the digital input signals. These options are intelligently coupled in a way typical for RME, and easy to apply thanks to a clear and easily understandable display of the Lock and Sync states. -
Page 7: First Usage - Quick Start
AES INPUT STATE displays the presence of a valid input signal separately for each AES input. RME's exclusive SyncCheck indicates via flashing LEDs if one of these inputs is locked, but not synchronous to the others. In the CLOCK SECTION... -
Page 8: Quick Start
The ADI-642 remembers all settings before switching off, and sets them automatically when switching on the next time. The storing process is triggered 4 seconds after the last change, and is signalled in the display as quickly moving point. User's Guide ADI-642 © RME... -
Page 9: Warranty
All entries in this User’s Guide have been thoroughly checked, however no guarantee for cor- rectness can be given. RME cannot be held responsible for any misleading or incorrect informa- tion provided throughout this manual. Lending or copying any part or the complete manual or its contents as well as the software belonging to it is only possible with the written permission from RME. - Page 10 For this the device has to be sent free to the door to: IMM Elektronik GmbH Leipziger Straße 32 D-09648 Mittweida Germany Shipments not prepaid will be rejected and returned on the original sender's costs. User's Guide ADI-642 © RME...
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Page 11: Usage And Operation
User's Guide ADI-642 Usage and Operation User's Guide ADI-642 © RME... -
Page 12: Front Panel Controls Madi Input
The LEVEL LED lights up as soon as the digital signal carries an information other than digital zero. The channel doesn't matter. So there is only one channel of audio information necessary for the LED to light up. The amount of level is not indicated. User's Guide ADI-642 © RME... -
Page 13: Clock
MADI input, as the sample rate range of the MADI audio data can not be detected automati- cally. Activation of Follow Clock: while the firmware version is shown press the CLOCK STATE but- ton. Both LEDs DS/QS light up. Deactivation: same, both LEDs stay dark. User's Guide ADI-642 © RME... -
Page 14: Remote
Monitor: The phones output is shown in the display as Ph. It can be assigned to any of the inputs, but always uses the next input channel too. So when selecting 02 the MADI channel 2 is sent to the left output, MADI channel 3 will be sent to the right output. User's Guide ADI-642 © RME... - Page 15 RS232 input data from the ADC Master via all ADC Slaves to the next ADC Master. See chapter 11.4. * The ADI-642 uses the user bit of channel 19 to transmit the ADC and Auto Channel state to other devices. User's Guide ADI-642 © RME...
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Page 16: Monitor
2 channels per AES wire. The effective sample frequency equals the clock on the AES wire. In case a conversion from/to Single, Double and Quad Wire is required, the ADI-192 DD, an 8-channel universal sample rate and format converter, is highly recommended. User's Guide ADI-642 © RME... -
Page 17: Outputs
1 of the XLR - not to the phono plug. Note that most consumer HiFi equipment with phono SPDIF inputs will only accept signals having a Channel Status ‘Consumer’ format! In such cases the above adapter cable will therefore not work. User's Guide ADI-642 © RME... -
Page 18: Word Clock
As soon as a valid signal is detected, the WCK LED is constantly lit, oth- erwise it is flashing. Thanks to RME's Signal Adaptation Circuit, the word clock input still works correctly even with heavily mis-shaped, dc-prone, too small or overshoot-prone signals. Thanks to automatic signal centering, 300 mV (0.3V) input level is sufficient in principle. -
Page 19: Technical Description And Background
22 MHz from a slow word clock of 44.1 kHz is no problem anymore. Additionally, jitter on the input signal is highly rejected, so that even in real world usage the re-gained clock signal is of highest quality. User's Guide ADI-642 © RME... -
Page 20: Cables And Termination
T-adapter, but to use the ADI-642's word clock output instead. Thanks to SteadyClock, the input signal will both be freed from jitter and - in case of loss or drop out – be held at the last valid frequency. User's Guide ADI-642 © RME... -
Page 21: Midi And Rs232
Technically every single MADI channel includes several additional bits, containing various in- formation (Channel Status). RME use the usually unused User Bit of channel 56 (channel 28 in 96k frame mode), to transmit MIDI data invisibly within MADI, ensuring full compatibility. -
Page 22: Remote Control Software
11.3 Remote Control Software A free remote software for Windows and Mac OS X can be downloaded from the RME website. MIDI port within the system to perform remote control and status requests of all ADI-642 via a simple mouse click. Most appealing is the combination with a HDSP MADI (PCI card), offering a direct control of the ADI-642 via MADI. -
Page 23: Rs232
(Tx) comes from the MADI input. Normal / ADC Master ADC Slave However, at the ADC Slaves the serial input signal is ignored, the data of the MADI input will be sent directly to the MADI output. User's Guide ADI-642 © RME... -
Page 24: Application Examples
12.1 Digital AES/EBU Breakout box As MADI from/to AES/EBU converter the ADI-642 is an ideal breakout box for RME's HDSP MADI PCI card. In order to convert the 64 channels of the MADI card to AES up to eight ADI- 642 will be connected in a serial way. -
Page 25: Digital Aes/Ebu Multicore
36 48 µs, 51 samples 1 ms. 15 36 26 44 18 39 32 50 24 samples at 192 kHz equal 125 µs, 48 samples 250 µs. 21 42 24 45 27 48 30 51 User's Guide ADI-642 © RME... - Page 26 User's Guide ADI-642 © RME...
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Page 27: Madi To Madi Converter
A HDSP MADI card allows to record 64 channels simultaneously into a computer. To also use the remaining channels, further channels have to be added to the origi- nal MADI signal. Two examples will show how the ADI-642 can handle this task with ease. User's Guide ADI-642 © RME... -
Page 28: Madinet
Example 1: A mixing desk sends 48 channels via MADI. 8 more channels from a RME Oc- taMic-D (8-channel microphone preamp with AES output) shall be recorded by a HDSP MADI into a computer. This application requires one ADI-642, which has to be inserted into the MADI line. -
Page 29: Technical Reference
User's Guide ADI-642 Technical Reference User's Guide ADI-642 © RME... -
Page 30: Technical Specifications
• Generates 56 channel and 64 channel mode, and 96k frame • Single Wire: up to 64 channels 24 bit 48 kHz • Double Wire / 96k frame: up to 32 channels 24 bit 96 kHz User's Guide ADI-642 © RME... -
Page 31: Midi - Rs232
• Internal clock: 800 ps Jitter, Random Spread Spectrum • Jitter suppression of external clocks: > 30 dB (2.4 kHz) • PLL ensures zero dropout, even at more than 100 ns jitter • Group delay: typically 3 samples User's Guide ADI-642 © RME... -
Page 32: General
Internally connected are pins 1 with 6 and 4, and pin 7 with 8. 13.8 MADI User Bit Chart • RS-232: channels 1 to 9 • ADC: channel 19 • MIDI: channel 56 (48k) / 28 (96k) User's Guide ADI-642 © RME... -
Page 33: Technical Background
The Quad Wire method allows to transmit two channels at up to 192 kHz via ADAT. The method is referred to as S/MUX4. Note: All conversions of the described methods are lossless. The existing samples are just spread or re-united between the channels. User's Guide ADI-642 © RME... -
Page 34: Lock, Synccheck And Syncalign
PLLs and data buffers. Therefore a random error of ± 1 sample differ- ence between the stereo pairs can occur. The ADI-642's exclusive SyncAlign technology avoids this effect and guarantees sample synchronicity among all four stereo channels. User's Guide ADI-642 © RME... -
Page 35: Aes/Ebu - Spdif
The table shows that a Professional-coded signal would lead to malfunctions for copy prohibi- tion and emphasis, if being read as Consumer-coded data. Nowadays many devices with SPDIF input can handle Professional subcode. Devices with AES3 input almost always accept Consumer SPDIF (passive cable adapter required). User's Guide ADI-642 © RME... -
Page 36: Madi Basics
2 km. Single mode allows for much longer distances, but it uses a completely different fibre (8 µm). By the way, due to the wave-length of the light being used (1300 nm), the opti- cal signal is invisible to the human eye. User's Guide ADI-642 © RME... -
Page 37: Steadyclock
Latest circuit designs like hi-speed digital synthesizer, digital PLL, 100 MHz sample rate and analog filtering allow RME to realize a completely newly developed clock technology, right within the FPGA at lowest costs. The clock's performance exceeds even professional expectations. -
Page 38: Block Diagram
15. Block Diagram User's Guide ADI-642 © RME... -
Page 39: Midi Implementation Chart
MADI Input State Actual input in use 0 = BNC 0 = normal operation 1 = Optical 0 = normal operation Optical 0 = BNC 1 = Redundancy mode Optical 1 = Optical 1 = Redundancy mode User's Guide ADI-642 © RME... -
Page 40: Table
(dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) (dto.) User's Guide ADI-642 © RME... - Page 41 1 hex coded value of byte (see below) info byte 2 hex coded value of byte (see below) info byte 3 hex coded value of byte (see below) set device ID (request displays in header) User's Guide ADI-642 © RME...
- Page 42 LSB / 0 adc device no. MSB / 1 MIDI remote: 0 = off, 1 = DIN, 2 = MADI LSB / 0 MIDI remote AES input 192k LSB / 0 AES input 96k * Since firmware 1.4. User's Guide ADI-642 © RME...