- Weight Nett: 1.7kg
- Gross: 2.3kg
- Dimensions Raw: 48cm (W) x 15.8cm (D) x 4.2cm (H) (1U)
- Boxed: 53cm (W) x 25.5cm (D) x 6cm (H)
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The RB-ADDA2 A/D and D/A converter is a 1U rack-mount which produces an AES/EBU, S/PDIF or TOSlink optical level digital audio output from a balanced XLR or unbalanced phono stereo audio input.
It also produces a stereo balanced XLR or unbalanced phono output from an incoming AES/EBU, S/PDIF or TOSlink optical digital input signal.
The RB-ADDA2 is a high performance, enhanced version of the RB-ADDA providing the following additional features:
It supports higher sample frequency rates up to and including 176.4kHz and 192kHz.
It has additional independent AES/EBU and Word Clock synchronising inputs, so that the A/D and D/A sections can operate independently, with the digital outputs synchronised to an external master reference clock.
It has TOSlink optical digital audio input and output.
It has front panel push-button switches for all the main settings which are easily accesible. The buttons are arranged in sets, where pressing the button advances the current selection and LED indicator.
A serial RS232 port is included so that the RB-ADDA2 settings can be controlled remotely. The front panel LED indicators alter automatically when using RS232 commands.
The A/D SOURCE push-button is used to select from either the balanced or unbalanced stereo analogue inputs and this push-button also defines the input level for full scale digits at one of +12dBFS, +18dBFS or +24dBFS. These values can then be fine-tuned by using rear-panel pre-set potentiometers which give another ±3dB of gain adjustment, allowing a signal range from +9dBu to +27dBu. The RCA phono inputs have a further 10dB gain incorporated to give a total gain range of -1dBu to +17dBu for full-scale digits.
For the digital output, there are three push-button switches to select the sample frequency, bit depth and status bit modes. The FREQUENCY button allows selection of the master sample frequency from one of 32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz or 192kHz.
The BITS button sets the output bit depth as one of 16, 20 or 24 bits, and the CS DATA button defines the content of the channel status bits embedded within the digital audio stream.
The channel status bits will be forced to Professional Mode for sample rates above 48kHz as they are not supported by the Consumer Mode.
For sample rates of 32kHz, 44.1kHz and 48kHz, the status bits can be forced to either Professional Mode (PRO), Consumer Mode (CON) or to follow the mode of the input (FOLLOW).
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