The ADCA412 provides exceptional 24 bit conversion from analogue audio to AES/EBU, giving out clear, noise-free audio.

With two independent channels this space-saving 100mm x 266mm module fits 24 converters in 2U, at a price comparable to other single channel products.

The ADCA412 can be used with any sampling data rates between 30kHz and 50kHz, with most applications typically involving 48kHz sampling.

It offers the flexibility to take the reference from three different sources: Black & Burst video (48kHz sampling only), another AES feed or word clock.

The crystal controlled phase locked loop ensures an extremely stable clock is generated at 48kHz even when referenced to video, resulting in the best possible performance. Having the AES locked to video is especially useful for audio which may later be embedded into a video feed.

The ADCA412 is available in two versions, with the AES outputs configured as either 110 ohm balanced or 75 ohm unbalanced depending on which OPAES output module is fitted.

Analogue audio input levels are preset to give either +18dBu or +24dBu for 0dBFS digital (the most common audio levels within television stations), or can be continuously adjusted from +12dBu to +28dBu.

Powerful features include a channel swap function allowing channels 1 and 2 to be transposed, while the phase of the right hand channel can be inverted to correct phasing errors.

Should multiple outputs from a single stereo input be required, there is an option to convert to single channel operation.

Listening to each incoming analogue stereo pair is quick and easy: just insert headphones into the jack at the front of the board.

The choice of six frame rear modules means you can choose the outputs you need for your application.

The RM03, RM11 and RM35 rear modules give four 110 ohm AES outputs per channel, with the 'easywire' RM35 featuring its audio connections on a 64-way DIN 41612 connector which stretches the full width of the rear module and therefore gives more room to solder the wires on to the individual pins.

The RM13 rear module gives three 75 ohm AES outputs per channel with a rear module Black and Burst loop-through, the RM14 four 75 ohm AES outputs per channel with a rear module Black and Burst loop-through and the RM21 two 75 ohm AES outputs per channel.

Control and status monitoring on the ADCA412 is flexible and sophisticated. Options include board edge, an active front panel on the frame, a remote control panel, SNMP or the Statesman PC Control System.

GPI functionality is especially useful, with available warnings including sustained silence – ideal for continuous feeds. The duration of silence before a warning is given can be programmed from 1.5 to 120 seconds in eight second steps.

The ADCA412 is ideal for any environment where you need to convert from analogue to digital audio, especially multi-channel applications.