Dolby Laboratories Lake LP4D12, Руководство пользователя

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Dolby
®
Lake
®
Processor System Manual Back-Panel Interface
39
5.3.2 Analog Output Card
Figure 5-5 Output Card
Each output card provides balanced analog audio input connections using male XLR
connectors.
5.3.3 Iso-Float Ground Isolation System
Analog input and output cards both feature the Iso-Float
TM
ground isolation system.
The Iso-Float technology combines the benefits of transformer-coupled isolation with
the advantages of clean, direct-coupled inputs and outputs. Iso-Float provides a
unique, cost-effective, and audibly superior alternative to isolation transformers for
avoiding ground loops in audio systems. While isolation transformers are typically an
expensive option for many processors, Iso-Float is standard on all converter cards for
the Dolby Lake Processor.
The audio converters are galvanically isolated, and not connected to the main ground.
High-speed transformers and opto-isolators create a barrier between the Processor and
possible grounding aberrations from the outside electrical environment.
Additionally, you can change the grounding of any input or output card remotely
through the Dolby Lake Controller software interface.
As shown in Figure 5-6, Iso-Float control is provided by a switch on the back panel
of A/D and D/A converter cards.