User's Guide ® CDS ® Constant Double Speed Analog Processing Digital Processing Hi-Precision 24 Bit / 96 kHz Stereo DSP based Analog / Digital-Converter Contents Introduction ................................................................. 3 Supplied Contents....................................................... 3 Brief Description and Characteristics.......................... 3 Technical Specifications ............................................. 4 4.1 Analog Specs ............................................................ 4 4.2 Digital Specs ............................................................. 4 5 First Usage - Quick Start ............................................ 5 6 Operation and DSP Functions .................................... 6 7 General DSP Functions 7.1 Input ......................................................................... 7 7.2 Output....................................................................... 8 7.3 Setup ........................................................................ 9 7.4 Boot other Function ................................................ 10 7.5 Information ............................................................. 11 7.6 Correlator ............................................................... 12 8 Serial Interface.......................................................... 13 9 DSP Software Dual Mono A/D 9.1 Brief Description and Characteristics .................... 14 9.2 Low Cut ................................................................. 15 9.3 Delay ..................................................................... 16 9.4 Expander ............................................................... 17 9.5 De-esser................................................................ 18 9.6 Non Linear Compressor ........................................ 19 9.7 Auto Level Control................................................. 20 9.8 Look Ahead ........................................................... 21 9.8.1 Expander........................................................ 21 9.8.2 Auto Level Control.......................................... 22 9.9 Remote Control .................................................... 23 9.10 Table of Parameters (Presets) ............................. 24 10 DSP Software Stereo A/D 10.1 Brief Description and Characteristics .................. 26 10.2 Remote Control ................................................... 26 10.3 Table of Parameters (Presets) ............................ 27 11 DSP Software Audio Analyser 11.1 Brief Description and Characteristics .................. 28 11.2 Keyboard Operation ............................................ 28 11.3 Software Audio Analyser ..................................... 29 11.4 Settings Spectrum Analyser ................................ 30 11.5 Notes on Operation ............................................. 31 12 Controls and Connectors .......................................... 32 13 Warranty ................................................................... 32 14 Addendum................................................................. 32 1 2 3 4 Copyright © RME, Matthias Carstens, 7/99. Version 1.4 All entries in this User´s Guide have been thoroughly checked, however no guarantee for correctness can be given. RME cannot be held responsible for any misleading or incorrect information 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. Changes due to technical reasons will and can happen without the need of notification to anyone. Trademarks All trademarks or registered trademarks belong to their respective owners. 2 User's Guide ADI-96 PRO © RME 1. Introduction Congratulations on your purchase of a ADI-96 PRO. This hi-quality analog to digital converter uses the unique Constant Double Speed technology to precisely convert analog audio data into different digital audio formats. Newest circuit technology combined with modern integrated circuits resulted in a unique and outstanding device, meeting highest quality standards. The ADI-96 PRO will excite you even after many years of operation. 2. Supplied Contents Please ensure that all the following parts are included in ADI-96 PRO's packaging box: · · · · · ADI-96 PRO Manual Power cord Serial cable 9-pin D-type RME Driver CD including Windows and BeOS software Remote Control 3. Brief Description and Characteristics The ADI-96 PRO is a 2-channel analog to digital converter in a 19" rackmount enclosure of 1 U height. Newest 24 bit converters using 64 times oversampling result in 115 dBA dynamic ratio. This value is not only printed in the brochure, thanks to our Low Jitter Design it is available with every sold unit. The servo balanced line inputs are fitted with both XLR and 1/4" TRS jacks separately. The signal path from the jacks to the ADC is totally balanced. A super low noise amplifier stage provides 20 dB adjustable gain, set by two hi-precision potentiometers on the front panel. This brings a perfect adaptation to the most used levels -10 dBV and +4 dBu for each channel separately. The integrated low noise and low distortion microphone preamp works totally independent from the line circuits. A high quality relais connects the output of the line and mic electronics directly to the AD-converter. The Mic XLR jacks also provide +48 V of phantom power for condenser microphones. The clearly structured front panel design ensures an easy start when working with the device for the first time. The Peak Level Meter is visualized by a hi-precision LED chain with reliable Over detection. The AD-converter is able to sample with 32, 44,1, 48, 64, 88,2 and 96 kHz. The digital output is available at SPDIF (coaxial and optical) and AES/EBU (XLR) connectors. Thanks to the unique Constant Double Speed technology the crystal clear sound of 96 kHz sample rate is preserved even when using common sample rates below 64 kHz, as the ADI96 PRO samples and calculates in double speed. RME's exclusive Analog Processing brings typical analog behaviour and sound to the digital domain. When using Look Ahead our Digital Processing technology minimizes changes in sound even with heavy processing. The DSP adds phase shift, low cut and mid/side processing in pure digital 48 bit quality. Processing all data in the DSP avoids all unwanted effects typical for analog circuitry, like additional noise, distortions, changes in frequency response and deviations between both channels. Calculating Phase, Low Cut, Expander, De-esser, M/S-Processing and Compressor by a 48 bit/96 kHz DSP results in a previously unreached sound quality. User's Guide ADI-96 PRO © RME 3 4. Technical Specifications · Power supply: Internal, 110 / 230 V AC, 30 Watts · Dimensions 483 x 44 x 205 mm · Weight: 2 kg 4.1 Analog Specs · · · · · · · · · · · Resolution AD: 24 bit Dynamic ratio: > 115 dBA THD+N: > 100 dB, < 0,001 % Maximum input level AD: +22 dBu Minimum Line input level for 0 dBFS: +2 dBu Minimum Mic input level for 0 dBFS: -50 dBu Frequency response AD, -0,1 dB: 5 Hz - 45 kHz (sf 96 kHz) Input Line: XLR, 1/4" TRS, servo balanced Input impedance Line: 10 kOhm Input Mic: XLR, servo balanced, +48 V phantom power switchable Input impedance Mic: 2 kOhm 4.2 Digital Specs · · · · · · · · · · · · · Super Low Jitter Design: < 3 ns in word clock PLL operation Output voltage: coaxial 0,5 Vpp, XLR 5 Vpp Output format: Consumer with/without copyright, Professional Supported sample rates: 32 kHz, 44,1 kHz, 48 kHz, 64 kHz, 88,2 kHz, 96 kHz Supported sample rates by word clock: 25 kHz - 105 kHz Internal resolution: 48 bit Resolution on digital output: 8, 16, 20, 24 bit Dither: 0 / 0,5 / 1 LSB triangular switchable Dither method: DC-offset free adding and rounding Output optical (TOSLINK), coaxial, XLR Format output SPDIF and AES/EBU (Consumer/Professional) Word clock input or output switchable Serial RS-232 interface 4 User's Guide ADI-96 PRO © RME 5. First Usage - Quick Start Connect your analog signal source to the ADI-96 PRO's XLR or TRS input jacks. First adjust the knobs fully counterclockwise and try to achieve an optimum input level by adjusting the source itself. Fine adjusting the input level can easily be done by watching the Peak Level Meter while turning the knobs. The best input level is present when all LED's except the Over LED's are lit at the loudest parts of the signal. When there is no level indication at all check the actual input state (Mic/Line) in menu INP for left and right channel. The analog line inputs of the ADI-96 PRO can be used with +4 dBu and -10 dBV signals. The ADI provides (stereo) TRS and XLR jacks. Both are internally connected, so not operational at the same time. The electronic input stage is built in a servo balanced design which handles monaural and stereo jacks correctly. When used unbalanced it automatically corrects the gain by 6 dB. G When using unbalanced cables with XLR jacks we recommend to short pin 3 of the cable's jack to pin 1 (ground). Otherwise noise may occur, caused by the unconnected negative input of the ADI-96 PRO's input jack. The Mic XLR jacks also provide +48 V of phantom power for condenser microphones (menu INP, Mic. Phantom Powered, separately for left and right channel). When switched on for the first time the DSP software Dual Mono A/D is started. To change to another DSP software see chapter 7.4 'Boot other function'. It is more than likely that when using the device for the first time some additional settings in the digital section have to be changed. The device is shipped with 16 presets, of which preset 1 and 2 are highly compatible to common equipment. Please choose correct sample frequency and format (Professional, Consumer) in menu OUT according to the capabilities of the device connected to the ADI-96 PRO's output. G Coaxial, optical and XLR jack of the digital output always carry the same signal. A connection to professional devices with AES/EBU inputs requires the channel status Professional. With this setting consumer DAT's connected in parallel will not start to record, as they require the format 'Consumer'. Transferring digital data into a PCI bus equipped computer is best done using RME's digital in® terface cards of the DIGI96 series. These cards with highest reputation are the ultimate solution for master and multitrack tasks. Drivers are available for Windows 95/98/NT and MacOS, soon for Linux, Unix, Solaris and BeOS. User's Guide ADI-96 PRO © RME 5 6. Operation and DSP Functions The ADI-96 PRO's user interface is easy to understand thanks to its clearly structured front panel design. The big and bright 2 x 20 character LC-display plus a simple and straight cursor controlled menu structure will probably make you never look into this manual. Because of the numerous functions found in the ADI and its software we strongly encourage you to study this manual. Let's start with a short introduction into the ADI-96 PRO's user interface philosophy. After power-on and automatic calibration the Info window will come up and show the currently loaded DSP software. The device remembers all settings even without saving them. To be sure a certain setup is being used unaltered you should first reload it using Recall (see 6.9 Setup). Press Enter to bring up the Overview window, which displays all configurations and the available DSP functions. Each function is represented by three letters, and is the highest menu of several submenus. On this level each function can be activated and de-activated (Bypass) by the +/- keys, that's why they are also labeled ON/OFF. Below this row of functions two lines out of thin lines, fat lines and bars can be seen. These two lines represent one channel each. The state of each function is shown by a thin line (off) and a fat line (on). The screenshot below shows all functions activated except LOC (Low Cut). A global bypass, useful for comparing the sound with/without DSP functions can be set by pressing the additional key Bypass DSP. To avoid pan shifts between left and right channel the control paths (sidechains) of some functions can be linked. As shown in the above screenshot, Link is activated for the function EXP (Expander), because both channel rows are no longer separated but combined by bars. The functions OUTPUT and SETUP can not be deactivated nor set up separately so no lines are shown at all. INPUT can't be deactivated, but in the stereo version of the DSP software the channels are linked. To enter a sub menu first use the arrow keys to move the cursor (shown as a blinking of the corresponding three letters) in the desired direction. The Overview window will begin to scroll because not all functions can be displayed simultaneously. An arrow will show up at the left and right border of the display, indicating that some ...