Madrigal Audio mark levinson Nº30 Operating Manual - page 7
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polarity invert
Pressing this button inverts the polarity of the digital signal, to
compensate for differences in phase during the recording process.
Some recordings may simply "sound better" when this function is
active.
While polarity invert is selected, the LED above the button will light.
Note: polarity invert doesn't affect the digital outputs, and
isn't available for inverting the polarity of digital signals to be
recorded.
Note: polarity invert may be operated by infrared remote
control, but only when the Nº30 is connected to certain
compatible Mark Levinson components. Complete
instructions are included in those components' operating
manuals.
8
copy protect LED
This LED lights when the Nº30 detects encoded copy protection in
the digital program being processed.
9
aes/ebu LED
This LED lights when the Nº30 detects that the digital program
being processed conforms to the AES/EBU professional standard.
Note: The aes/ebu LED lights only when AES/EBU professional-
standard recording information is present in the data stream.
Using AES/EBU-standard interconnections doesn't activate
this LED unless AES/EBU data is present in the source material.
Playback of non-AES/EBU CDs or DATs won't activate the
aes/ebu LED, even if the associated transport is connected
according to the AES/EBU standard.
10 emphasis LED
This LED lights when the Nº30 detects recording pre-emphasis in the
digital program being processed, and subsequently employs its
de-emphasis circuitry (see "Specifications").
Note: The de-emphasis circuitry of the Nº30 is designed to be
compatible with all known digital standards. Under certain
conditions, however, the emphasis LED will light in error (that
is, when the digital program doesn't contain recording pre-
emphasis).
This isn't a malfunction of the Nº30. Rather, it's the result of
incorrect signals generated by the program source's
transport. Depending on your transport and how you
operate it, you may never see this condition. Even when the
condition exists, it has no effect on sonic quality.