A cost-effective converter for almost all stereo A/D and D/A duties
The ADA stereo, 24-bit, 96kHz 1U rackmount unit that produces an AES/EBU or SPDIF output from a balanced or unbalanced analogue stereo input, and a stereo balanced or unbalanced output from an incoming AES/EBU or SPDIF input. Designed to complement CEDAR's award-winning DNS-series and Duo-series hardware modules as well as CEDAR Cambridge, the ADA offers four sync modes, professional and consumer formats, emphasis on/off, user-selectable input levels of up to 27dBu, and a maximum output level of +24dBu.
With both professional (XLR) and consumer (phono) analogue inputs and outputs, the ADA is usable in almost all analogue and digital environments. With a dynamic range of greater than 110dB and a signal to noise ratio of better than 109dBfs, it's suitable for all but the very most demanding converter tasks.
The clock signals are generated internally by an on-board master clock at a userselectable rate: 32kHz, 44.1kHz, 48kHz, 64kHz, 88.2kHz or 96kHz.
If a digital signal is present at the selected digital input, the ADA synchronises to it. If no such signal is present, no output is generated.
If a digital signal is present at the selected digital input, the ADA synchronises to it. If no such signal is present, the ADA uses its internal master clock at the userselected sample rate.
Auto Lock Mode
This operates in the same manner as Auto Mode except that, if no digital signal is present, the ADA uses its internal master clock running at the most recently synchronised sample rate.
When operating in any other than Master Mode, the front panel power LED will flash whenever the ADA is not synchronised to an incoming digital signal.
Input and Output
The CEDAR ADA has analogue inputs and outputs at both professional and consumer signal levels. The professional level signals are electronically balanced and use XLR connectors, while the consumer signals are unbalanced and are carried by RCA (phono) connectors. In each case, the input level is adjustable over a range of 18dB, and the output level may be set to one of three levels, each separated by 6dB.
There is a button to select professional or consumer input. Both outputs are active at all times. There are also buttons to select the AES/EBU or SPDIF input or output for the D/A and A/D sections. You may define the channel status bits embedded within the digital audio. For sample rates of 32kHz, 44.1kHz and 48kHz, the status bits can be set to Professional or Consumer mode. For sample rates above 48kHz, the status bits will be forced to Professional mode because the ADA does not support Consumer mode at these rates.