HP N31.5 manual Digital OUTPUT, Eiaj Optical

7DIGITAL OUTPUT, EIAJ OPTICAL

This output provides the digital audio signal (DAS), via optical cable equipped with the EIAJ-type optical connector (sometimes called “Toslink®”) to the digital processor.

8DIGITAL OUTPUT, ST OPTICAL

This output provides the digital audio signal (DAS), via optical cable equipped with the ST-type optical connector (sometimes called “AT&T”) to the digital processor.

9DIGITAL OUTPUT, S/PDIF ELECTRICAL

This output provides the digital audio signal (DAS) via cables equipped with RCA-type connectors to the digital processor.

This input conforms to the Sony/Philips Digital Interface Standard (S/PDIF), which calls for a 75Ω transmission of the DAS. Use a digital interconnecting cable specifically designed for the 75Ω S/PDIF standard, such as Madrigal MDC-2 cable, when using this input.

10DIGITAL OUTPUT, AES/EBU ELECTRICAL

This output provides the digital audio signal (DAS) via cables equipped with XLR-type connectors to the digital audio processor.

This input conforms to the Audio Engineering Society/European Broadcast Union (AES/EBU) professional digital audio standard, which calls for a 110Ω

transmission of the DAS. Use a digital interconnecting cable specifically de- signed for the 110Ω AES/EBU standard, such as Madrigal MDC-1 cable, when using this input, with pin assignments as indicated below:

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3

Pin 1: chassis ground (AC-coupled)

Pin 2: non-inverted digital

Pin 3: inverted digital

Connector ground lug: chassis ground

It has been Madrigal’s experience that the AES/EBU interconnection stan- dard offers the best quality of all digital transmission interfaces when fully optimized, and we recommend its use wherever possible between Mark Levinson components.

However, optimizing any digital interface completely represents a significant engineering challenge. It is entirely possible that a different type of input may actually outperform a less-than-optimized AES/EBU implementation on some brands of digital processors. For this reason, we have gone to great lengths to fully optimize all four of the digital outputs on the Nº31.5. If you are using you Nº31.5 with a different brand of processor, we recommend experimenting to determine which type of input on that processor results in the best audible performance.

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