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Related Manuals for RME Audio ADI-8 DS Mk III
Summary of Contents for RME Audio ADI-8 DS Mk III
- Page 1 User’s Guide ADI-8 DS Mk III A true industry standard ™ SyncAlign ™ SyncCheck ™ SteadyClock Hi-Precision 24 Bit / 192 kHz Reference Low Latency Conversion 8-Channel Analog <> AES / ADAT Interface 24 Bit / 192 kHz Digital Audio ADAT <>...
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Page 2: Table Of Contents
13.3 Latency and Monitoring........33 13.4 DS – Double Speed ..........34 13.5 QS – Quad Speed..........34 13.6 AES/EBU – SPDIF ..........35 13.7 Signal to Noise ratio in DS / QS Operation..36 13.8 SteadyClock ............37 Block Diagram ............38 User’s Guide ADI-8 DS © 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-8 DS © RME... - Page 4 User’s Guide ADI-8 DS © RME...
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Page 5: General
User’s Guide ADI-8 DS General User’s Guide ADI-8 DS © RME... -
Page 6: Introduction
1. Introduction RME's ADI-8 DS is an 8-channel high-end AD/DA converter with a truly unique feature set. The device combines excellent analog circuit design with the latest generation of outstanding low latency AD/DA converter chips. Along with its integrated SteadyClock, the ADI-8 DS offers AD and DA conversion of the highest quality. -
Page 7: First Usage - Quick Start
ADI-8 DS operate in the range of 100V to 240V AC. It is short- circuit-proof, has an integrated line-filter, is fully regulated against voltage fluctuations, and sup- presses mains interference. User’s Guide ADI-8 DS © RME... -
Page 8: Quick Start Operation
On the DA-side just choose the desired digital input by pressing D/A INPUT. A coarse correc- tion of the analog output level can be done by pressing the D/A REFERENCE button. The ADI-8 DS stores all current settings and automatically activates them when the device is turned on. User’s Guide ADI-8 DS © RME... -
Page 9: Accessories
5. Accessories RME offers several optional components for the ADI-8 DS: Part Number Description OK0050 Optical cable, Toslink, 0.5 m (1.7 ft) OK0100 Optical cable, Toslink, 1 m (3.3 ft) OK0200 Optical cable, Toslink, 2 m (6.6 ft) OK0300 Optical cable, Toslink, 3 m (9.9 ft) OK0500 Optical cable, Toslink, 5 m 16.4 ft) -
Page 10: 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 11 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-8 DS © RME...
- Page 12 User’s Guide ADI-8 DS © RME...
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Page 13: Usage And Operation
User’s Guide ADI-8 DS Usage and Operation User’s Guide ADI-8 DS © RME... -
Page 14: Front Panel Controls A/D Reference
In single speed mode, the ADAT output signal is mirrored to the ADAT AUX output, so two ADAT devices can receive the same signal from the ADI-8 DS. This feature is available in any mode as long as the unit does not use sample rates higher than 48 kHz. User’s Guide ADI-8 DS © RME... -
Page 15: Clock Section
The AES outputs 1-8 carry a signal in the range of 176.4 kHz up to 192 kHz. ADAT stays at no higher than 48 kHz, with the data transmitted in the S/MUX4 format. Therefore ADAT is limited to 4 channels (2 per optical output) in this mode. User’s Guide ADI-8 DS © RME... -
Page 16: D/A Input
When selecting +24 dBu the LEDs +19 dBu and +24 dBu are lit at the same time, indicating that the TRS jacks stay at +19 dBu while the D-sub connector outputs are operated at +24 dBu. User’s Guide ADI-8 DS © RME... -
Page 17: Inputs And Outputs
User’s Guide ADI-8 DS Inputs and Outputs User’s Guide ADI-8 DS © RME... -
Page 18: Analog Inputs / Outputs Line In
The red LED OVR lights up 2 dB before full scale level (-2 dBFS) with half brightness, and full brightness at 0 dBFS. The ADI-8 DS uses the following level references: Reference 0 dBFS @ Headroom @ +4 dBu Other RME devices +24 dBu 20 dB +19 dBu 15 dB... -
Page 19: Line Out
The different output levels guarantee optimal conversion results, while still being compatible to any attached analog equipment. The ADI-8 DS uses the following level references: Reference 0 dBFS @ Headroom @ +4 dBu Other RME devices +24 dBu 20 dB +19 dBu 15 dB... -
Page 20: Digital Inputs / Outputs
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 RME ADI-192 DD, an 8-channel universal sample rate and format converter, is highly recommended. -
Page 21: Adat Optical
Speed or two channels at Quad Speed, the port labelled AUX has to be used as well. The ADAT optical inputs of the ADI-8 DS use RME's unsurpassed Bitclock PLL, which prevents clicks and drop outs even in extreme varipitch operation, and guarantees a fast and low jitter lock to the digital input signal. -
Page 22: Word Clock
As soon as a valid signal is detected, the WCK 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 (0.3 V) input level are sufficient in principle. -
Page 23: 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-8 DS © RME... -
Page 24: Cables And Termination
T-adapter, but to use the ADI-8 DS 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-8 DS © RME... -
Page 25: Technical Reference
User’s Guide ADI-8 DS Technical Reference User’s Guide ADI-8 DS © RME... -
Page 26: Technical Specifications
Line Out 1-8, D-Sub • Maximum output level: +27 dBu • Output: D-sub 25-pin, electronically balanced • Output impedance: 150 Ohm • Output level switchable +4.2 dBu, +13 dBu, +19 dBu, +24 dBu @ 0 dBFS User’s Guide ADI-8 DS © RME... -
Page 27: Digital Inputs
• Level range: 1.0 Vpp – 5.6 Vpp • Lock Range: 27 kHz – 200 kHz • Jitter when synced to input signal: < 1 ns • Jitter suppression: > 30 dB (2.4 kHz) User’s Guide ADI-8 DS © RME... -
Page 28: Digital Outputs
• Jitter suppression of external clocks: > 30 dB (2.4 kHz) • Effective clock jitter influence on AD-conversion: near zero • PLL ensures zero dropout, even at more than 100 ns jitter • Supported sample rates: 28 kHz up to 200 kHz User’s Guide ADI-8 DS © RME... -
Page 29: Connector Pinouts
3/4- 5/6+ 5/6- 7/8+ 7/8- D-Sub Signal 1/2+ 1/2- 3/4+ 3/4- 5/6+ 5/6- 7/8+ 7/8- D-Sub GND is connected to pins 3, 6, 9, 12, 14, 17, 20, 23. Pin 1 is not connected. User’s Guide ADI-8 DS © RME... - Page 30 Ring = – (cold) Sleeve = GND The servo-balanced circuitry allows to use monaural TS jacks (unbalanced) with no loss in level. This is the same as when using a TRS-jack with ring connected to ground. User’s Guide ADI-8 DS © RME...
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Page 31: Technical Background
The Quad Wire method realizes the transmission of 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-8 DS © RME... -
Page 32: Lock And Synccheck
In practice, SyncCheck allows for a quick overview of the correct configuration of all digital de- vices. This way one of the most difficult and error-prone topics of the digital studio world finally becomes easy to handle. User’s Guide ADI-8 DS © RME... -
Page 33: Latency And Monitoring
13.3 Latency and Monitoring The term Zero Latency Monitoring has been introduced by RME in 1998 for the DIGI96 series and describes the ability to pass-through the computer's input signal at the interface directly to the output. Since then, the idea behind has become one of the most important features of mod- ern hard disk recording. -
Page 34: Ds - Double Speed
Therefore in Quad Speed mode the ADI-8 DS is limited to 4 chan- nels at the ADAT outputs. The AES outputs provide 192 kHz as Single Wire only, thus transmitting all 8 channels without limitations. User’s Guide ADI-8 DS © 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-8 DS © RME... -
Page 36: Signal To Noise Ratio In Ds / Qs Operation
When limiting the measurement range from 20 Hz to 20 kHz (so called audio bandpass) the value would be -114 dB again. This can be verified with RME's DIGICheck. The function Bit Statistic & Noise measures the noise floor by Limited Bandwidth, ignoring DC and ultrasound. -
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
14. Block Diagram User’s Guide ADI-8 DS © RME...