User's Guide ADI-2 SyncAlign TM TM SyncCheck Intelligent Clock Control TM TM SteadyClock Hi-Precision 24 Bit / 192 kHz 2-Channel AD / DA-Converter AES / SPDIF / ADAT Interface Hi-Power Hi-End Headphone Output AES/EBU 192 kHz / 24 Bit Interface
Contents 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 2 Introduction ...............................................................3 Supplied Contents ....................................................3 Brief Description and Characteristics.....................3 Technical Specifications 4.1 Analog Specs .........................................................4 4.2 Digital Specs ..........................................................5 4.3 Digital Interface ...............................................
1. Introduction Congratulations on your purchase of a ADI-2. This hi-quality analog to digital and digital to analog converter includes AES/SPDIF and ADAT optical digital interfaces. It represents a sophisticated, highly flexible and universal tool. Advanced circuit technology combined with latest integrated circuits result in a unique and outstanding device, meeting highest quality standards. The ADI-2 will excite you even after many years of operation. 2.
. Technical Specifications • • • • • • • • Power supply: external switching power supply, 100 - 240 V AC, 20 Watts Accepted power supply voltage: DC 8 V – 28 V, AC 8 V – 20 V Current at 12 V: 670 mA (8 Watts) Dimensions including rack ears (WxHxD): 265 x 44 x 165 mm (10.5" x 1.73" x 6.5") Dimensions without rack ears/handles (WxHxD): 218 x 44 x 155 mm (8.6" x 1.73" x 6.1") Weight: 1 kg ( 3.3 lbs) Temperature range: +5° up to +50° Celsius (41° F up to 122°F) Relative humidity: < 75%, non condensing 4.
4.2 Digital Specs • • • • • • • • Clocks: Internal, ADAT In, SPDIF In Low jitter design: < 1 ns in PLL mode, all inputs Internal clock: 800 ps jitter, random spread spectrum Jitter suppression of external clocks: about 30 dB (2.4 kHz) Effective clock jitter influence on AD and DA conversion: near zero PLL ensures zero dropout, even at more than 100 ns jitter Digital Bitclock PLL for trouble-free varispeed ADAT operation Suppoerted sample rates: 30 kHz up to 200 kHz 4.
. First Usage - Quick Start Connect the TRS-jacks or the XLR connectors with the analog signal source. Change the input sensitivity by pressing INPUT - LEVEL until the input level is sufficient to avoid noisy operation. Try to achieve an optimum input level by adjusting the source itself. Raise the source’s output level until the yellow –3 LEDs light up. The analog line inputs of the ADI-2 can be used with +4 dBu and -10 dBV signals.
. Inputs and Outputs 7.1 Analog Inputs The ADI-2 provides balanced Line inputs via Neutrik combo jacks, XLR and 1/4" TRS. 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. When using unbalanced cables with XLR jacks, pin 3 of the cable's jack should be connected to pin 1 (ground). Otherwise noise may occur, caused by the unconnected negative input of the ADI's balanced input.
7.2 Analog Outputs The short circuit protected, low impedance and balanced line outputs are available as (stereo) 1/4" TRS jacks and XLR jacks. Both are internally connected, and can be used simultaneously. The electronic output 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.
7.3 Headphones The PHONES output on the front is fed from the DA-converter too. Although this output is not balanced, it still offers the same outstanding technical specifications as the rear outputs (e.g. 119 dBA SNR), so can be used as high quality Line output as well ( see chapter 12, Connector Pinouts). The level of the headphone output can be changed in a stepless way using the VOL pot.
7.5 Digital Outputs The ADI-2 has a coaxial and an optical digital output. The key OUTPUT sets the format: • ADAT: The optical TOSLINK output operates in ADAT mode. Included support for Sample Split (S/MUX) enables sample rates up to 96 kHz. • PRO: The output signal carries the Channel Status Professional. The physical output level at the RCA connector is raised, making the signal compatible to AES-3 and AES/EBU. The same signal is found at the optical output.
8. Clock Section The ADI-2's unique clock section layout makes it easy to use, easy to understand and easy to read. Additionally RME's Intelligent Clock Control (ICC) enables a flexible operation of the ADand DA-converter with internal clock or the digital input signals. A clear display of the lock and sync state further improves the clock section's usability. The chosen clock state is valid for both AD- and DA-conversion simultaneously.
9. Noise level in DS / QS Mode The outstanding signal to noise ratio of the ADI-2 can be verified even without expensive test equipment, by using our famous DIGICheck tool or the record level meter of Steinberg's WaveLab. When activating the DS and QS mode, the displayed noise level will rise from -110 dB to -104 dB at 96 kHz, and –82 dB at 192 kHz. This is not a failure.
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12. Connector Pinouts TRS jacks of analog input / output The stereo ¼" TRS jacks are wired according to international standards: Tip = + (hot) Ring = – (cold) Sleeve = GND The servo balanced input and output 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.
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15. Warranty Each individual ADI-2 undergoes comprehensive quality control and a complete test before shipping. The usage of high grade components should guarantee a long and trouble-free operation of the unit. If you suspect that your product is faulty, please contact your local retailer. Do not open the device by yourself as it may get damaged. It has been sealed with tamper-evident material, and your warranty is void if those seals have been damaged.
CE / FCC Compliance CE This device has been tested and found to comply with the limits of the European Council Directive on the approximation of the laws of the member states relating to electromagnetic compatibility according to RL2004/108/EG, and European Low Voltage Directive RL2006/95/EG. FCC This device complies with Part 15 of the FCC Rules.
