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Related Manuals for RME Audio ADI-648
Summary of Contents for RME Audio ADI-648
- Page 1 User's Guide ADI-648 Multichannel Audio Digital Interface SyncAlign SyncCheck Intelligent Clock Control SteadyClock Hi-Precision 24 Bit / 192 kHz 64 Channel MADI / ADAT Converter 16 x 16 Matrix Router MIDI embedded in MADI MADI 24 Bit Interface Firmware 2.5 or up...
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Page 2: Table Of Contents
MADI Basics ....................24 12.4 SteadyClock ....................25 Controls and Connectors ................26 Block Diagram ....................27 MIDI Implementation Chart 15.1 Basic SysEx Format ...................28 15.2 Message Types ..................28 15.3 MADI Input State – Redundancy Mode............28 Warranty......................31 Appendix ......................31 User's Guide ADI-648 © RME... -
Page 3: 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-648 © RME... - Page 4 User's Guide ADI-648 © RME...
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Page 5: Introduction
88.2 and 96 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 understand- able display of the Lock and Sync states. -
Page 6: Technical Specifications
• Overvoltage protection • Level range: 1.0 Vpp – 5.6 Vpp • Lock range: 27 kHz – 112 kHz • Jitter when synced to input signal: < 1 ns • Switch for internal termination 75 Ohm User's Guide ADI-648 © RME... -
Page 7: Outputs
• PLL ensures zero dropout, even at more than 100 ns jitter • Additional Bitclock PLL for trouble-free varispeed ADAT operation • Supported sample rates: 32 / 44.1 / 48 / 64 / 88.2 / 96 / 176.4 / 192 kHz User's Guide ADI-648 © RME... -
Page 8: First Usage Quick Start
MADI input signal. The Matrix Router is deactivated. A quick guide for operation and functionality of the ADI-648 can be found on the next page. For transmission of the digital signals into a computer we recommend RME's interface cards of ®... -
Page 9: Operating The Adi-648
ADI-648 operates correctly even without changing to 96k Frame mode, because Double Wire will be converted 1:1 to ADAT (S/MUX). RME's intelligent clock control (ICC) offers extensive and professional means. To start with, the clock source can be set to Internal (crystal), External (BNC word clock) and Input, while Input lets you select between ADAT and MADI. -
Page 10: The Madi To Adat Converter General
ADAT ports and therefore operates in 8-channel blocks, an AUDIO LED will show audio data from 8 channels simultaneously. The green LED is lit as soon as one of the channels of an 8-channel block contains audio data, means is no longer digital zero. User's Guide ADI-648 © RME... -
Page 11: Outputs Adat Optical
Double Wire, Quad Wire (Sample Split = Single Speed) and 96K Frame (Double Speed). In both cases the number of channels is reduced to 28/32 or 14/16. At the same time the Matrix Router no longer operates in 8-channel, but in 4-channel or 2-channel blocks. User's Guide ADI-648 © RME... -
Page 12: The Adat To Madi Converter General
648 operates in 8-channel blocks, an AUDIO LED will show audio data from 8 channels simul- taneously. The green LED is lit as soon as one of the channels of an 8-channel block contains audio data, means is no longer digital zero. User's Guide ADI-648 © RME... -
Page 13: Outputs Madi
MADI input. A missing or invalid clock source signal is indicated by flashing of the corre- sponding LED. EXT. With EXTERNAL, the ADI-648's word clock input is used as clock reference. The LED will flash, if the word clock is missing or unusable. User's Guide ADI-648 © RME... -
Page 14: Lock And Synccheck
In practice, SyncCheck allows for a quick overview of the correct configuration of all digital de- vices. So one of the most difficult and error-prone topics of the digital studio world finally be- comes easy to handle. User's Guide ADI-648 © RME... -
Page 15: Word Clock Input And Output
As soon as a valid signal is detected, the EXT LED is constantly lit, otherwise 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 16: Word Clock
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-648 © RME... -
Page 17: Cabling And Termination
T-adapter, but to use the ADI-648'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-648 © RME... -
Page 18: Midi
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 19: Remote Control Software
10.3 Remote Control Software The Windows and Mac software MIDI Remote can be downloaded for free from the RME web- site. 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 combination with a HDSP MADI (PCI card), offering a direct control of the ADI-648 via MADI. - Page 20 Options – Program Device ID Opens a dialog to program a device ID into the ADI-648. Note: programming is fast and not confirmed. Attention: Programming is only possible when only one ADI-648 is connected via MIDI! User's Guide ADI-648 © RME...
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Page 21: Special Modes
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-648 can handle this task with ease. User's Guide ADI-648 © RME... -
Page 22: Madinet
Example 1: A mixing desk sends 48 channels via MADI. 16 more channels from two RME Oc- taMic-D (8-channel microphone preamps with ADAT output) shall be recorded by a HDSP MADI into a computer. This application requires only one ADI-648, which has to be inserted into the MADI line. -
Page 23: Technical Background
Therefore in Quad Speed mode the ADI-648 is limited to 2 chan- nels at the ADAT outputs. As MADI also uses the Quad Wire method at Quad Speed, only 16 channels are available instead of 64. User's Guide ADI-648 © RME... -
Page 24: 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-648 © RME... -
Page 25: Steadyclock
Latest circuit designs like hi-speed digital synthesizer, digital PLL, 200 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 26: Controls And Connectors
Input/Output ADAT 44.1 / 48 kHz On/Off Select MADI 96k Frame Reset 88.2 / 96 kHz Clock Source Remote control via Input Word MIDI Internal Rear Power MADI I/O ADAT I/O Wordclock I/O MIDI I/O User's Guide ADI-648 © RME... -
Page 27: Block Diagram
14. Block Diagram (excluding MIDI) User's Guide ADI-648 © RME... -
Page 28: 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-648 © RME... - Page 29 4Eh matrix output 15 1 Byte, 0..15 = input no., 16 = no input 4Fh matrix output 16 1 Byte, 0..15 = input no., 16 = no input 60h device ID 1 Byte (00h..7Eh, 7Fh = broadcast) User's Guide ADI-648 © RME...
- Page 30 ADAT in 1 / 3 / 5 / 7, 0 = error, 1 = lock, 2 = sync bits 4..6 ADAT in 2 / 4 / 6 / 8, 0 = error, 1 = lock, 2 = sync User's Guide ADI-648 © RME...
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Page 31: 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 32 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-648 © RME...