EMM Labs DAC8 MKIV - Manual (Page 11)

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OPTIC / WIRE: Selects the physical connector for input data (optical or
WIRE). For the WIRE selection an additional switch is
necessary to define WIRE as either BNCor XLR.
BNC / XLR (WIRE): Selects BNC or XLR as input when OPTIC / WIRE switch
is set to WIRE
Interface Format Section
RAW / SDIF-3: When PCM is on BNC this switch needs to be set to
“RAW DSD” which is equivalent for SDIF-2, when DSD is
on BNC this switch selects between RAW DSD and
SDIF-3 formats
DSD / PCM: Selects format for BNC output for all situations where
PCM is selected as input format to D/A converter. This
switch has to be in DSD position when DSD is the
selected input format via optical to the D/A and is
ignored when BNC DIR is set to IN.
Oversampling Ratio
64FS / 128: For PCM input this switch selects the oversampling ratio
and for DSD inputs it selects the sample rate of the DSD
input data. It also selects the sample rate of the DSD
output on the BNC connectors.
Error Indicator Is lit for illegal switch positions
Table 2: Functional Modes of D/A
Conversion BNC Analog AES/EBU Optical In Optical Out
DSD to DSD,
analog
DSD In Out - - DSD
PCM to DSD,
analog
PCM In Out - - DSD
PCM to DSD,
analog
PCM Out or
DSD Out or
-
Out PCM In - DSD
DSD to DSD,
analog
DSD Out Out - DSD DSD