RME ADI-4 DD

Overview

RMEs ADI-4 DD is a highly cost-efficient AES to ADAT and ADAT to AES converter. Support for up to 96 kHz and a built-in jitter suppression are just two of several outstanding features.

The actual states of incoming and outgoing signals and ongoing operations within the unit are displayed by LEDs in an easily overseeable way. SyncCheck SyncCheck
When working with several digital sources it is not only necessary that these are all properly locked, they also have to be totally synchronized. Else drop outs and crackling occurs.
RME's exclusive SyncCheck checks all input signals. In clock mode Master the synchronous operation to the internal clock is checked. This outstanding and unique technology helps to find errors immediately. The actual state of each input is displayed in the settings dialog. ® , already found in other RME products, not only shows if an input signal is locked, but also if multiple inputs are in synchronicity. Furthermore RMEs SyncAlign SyncAlign
SyncAlign includes several methods and techniques to guarantee absolute data alignment with regard to time and channels. No RME digital audio card will ever swap channels, not in stereo nor in multi channel mode, regardless what you do with the card and the signals it gets. SyncAlign also controls the timing among the channels, no matter how much are used, they will always start sample-aligned.
When the record while play mode is activated, the corresponding software first starts record and then playback (or playback then record.) SyncAlign can compensate the time difference so that an exact simultaneous start of record and playback in the record while play mode is guaranteed. In asynchronous mode (different programs use different stereo devices of one card) this part of SyncAlign is automatically deactivated. ® technology prevents accidental errors of ± 1 sample misalignment between the AES/EBU inputs. The AES output signal can be set to Professsional or Consumer subcode. Channel 1/2 can optionally be received and output optically (TOSLINK).

RME's SteadyClock^(TM) technology guarantees an excellent performance in all clock modes. Its highly efficient jitter suppression enables the ADI-4 DD to refresh and clean up any clock signal, and to provide the clock signal as reference clock at the word clock output. Additionally, Intelligent Clock Control Intelligent Clock Control (ICC)
Our unique SyncCheck and AutoSync technology has evolved into the new Intelligent Clock Control of the Hammerfall DSP system. HDSP is the only digital I/O-system worldwide capable of measuring and displaying the frequency of all clock sources. Even word clock! Based on validity and current sample rate the system then decides which clock source should be used - fully automated and performed in hardware! With this the HDSP system offers the most easiest handling of the present clocks, although having a lot digital inputs, plus the most advanced support when configuring the clock setup. (ICC) will maintain the last sample rate detected as valid in case of fault and loss of input signal. The device can be stacked without limit, all devices will be sample synchronous by using word clock. All settings are stored at power-off.

Features

The device basically consists of two converters: four AES-3 inputs to double ADAT outputs, and double ADAT inputs to four AES-3 outputs. The double ADAT ports enable full 8 channel support, from 32 kHz up to 96 kHz (S/MUX). The unit provides one XLR I/O directly. A DB-25 connector allows for a use of industry standard AES-3 I/O breakout cables. Setting an internal connector easily changes the DB-25 connector to meet the pinout of Tascam (Digidesign), Yamaha and Euphonix cables.

Application examples:

• AES/EBU frontend for RME's digital I/O cards (ADAT optical I/O)
• Serves as 8-Channel AES and ADAT I/O for all digital mixing desks with ADAT or AES ports
• Allows to operate up to 4 SPDIF or AES devices
• Converts between AES-3, SPDIF and SPDIF optical
• Removes jitter from AES-3 and ADAT signals

Conversion modes (selection):

• 8-Channel AES to ADAT optical converter (96 kHz)
• 2-Channel AES to 8-Channel ADAT splitter (96 kHz)
• 8-Channel ADAT to AES converter (96 kHz)
• 2-Channel AES to 8-Channel AES splitter (96 kHz)
• 4-Channel AES Double Wire to AES Single Wire converter (96 kHz)
• 4-Channel AES Single Wire to AES Double Wire converter (96 kHz)

All in all the ADI-4 DD shows an unsurpassed flexibility together with a sensational price point. It is a perfect interface solution in all areas, from home user up to broadcast applications.

Tech Specs

Input AES/EBU: 1 x XLR, 4 x via DB-25 connector, electrically isolated, highly sensitive input stage (< 0.3 Vpp), SPDIF compatible

Output AES/EBU: 1 x XLR, 4 x via DB-25 connector, transformer balanced, 5 Vpp

SPDIF Optical: Second ADAT port can be switched to serve as SPDIF I/O

Input ADAT^® optical 2 x TOSLINK, 24-Bit, Bitclock PLL

Output ADAT^® optical: 2 x TOSLINK, 24-Bit

Input word clock: BNC, Signal Adaptation Circuit (functional from 1.2 Vpp input signal)

Output word clock: BNC, low-impedance driver stage, 4 Vpp into 75 Ohms, short-circuit-proof

Sync sources: ADAT optical, AES/EBU, word clock

Varipitch: by input signal or word clock

Sample rates: 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, variable (Sync/word clock)

Sample rate range: AES, word clock: 27 kHz-105 kHz, ADAT 33 kHz - 57 kHz

Jitter: Internal clock < 1 ns, word clock In < 2 ns, ADAT In < 2 ns

Jitter sensitivity: all PLLs operate even at 100 ns Jitter without problems

Jitter suppression: circa 30 dB (2.4 kHz)

Power Supply: Operates with voltages ranging from 7-30V DC oder AC, allowing operation with practically any power source, including batteries

External high-quality switching power supply included, for worldwide operation at 100-240 Volt

Dimensions: 215 x 44 x 100 mm

Cables (not included)

BO25MXLR4M4F3: Digital Breakout Multicore, D-Sub to 4 x XLR-F / 4 x XLR-M, 3 m

BO25MXLR4M4F6: Digital Breakout Multicore, D-Sub to 4 x XLR-F / 4 x XLR-M, 6 m

Accessories

• External Power Supply for CardBus (NTCB-EU)
• Line Cord for Power supply (NETZ-CB)
• Car Cable for CardBus (AUTOK)
• Cable for Storage Battery (AKKUK)