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14
4
MODE BUTTON
The mode button serves two functions, one in day-to-day operation and
the other only during setup:
• In everyday use, the
mode
button allows you to see the status of the
digital output
and to turn it on or off.
• During setup, the
mode
button allows you to rename the various inputs
of the Nº36 to suit the needs of your system, making it easier to use (es-
pecially for those who use the system infrequently).
To check on whether your selected input is present at the digital output,
press
mode
once. This action causes the display to indicate whether the
digital record output is on or off. For example, the display shown below in-
dicates that the digital record output is on.
To disable the digital record output, press the
mode
button again. The dis-
play will read
RCD: OFF
and the digital output of the Nº36 will be tempo-
rarily disabled. This eliminates any potential interaction between the record
output circuitry of the Nº36 and the rest of your system. Repeatedly press-
ing the
mode
button while
RCD:
shows in the left half of the display will
toggle the Nº36 between
RCD: OFF
and
RCD: ON
for the selected source.
After a few seconds, the display will return to its normal mode, which is to
display the selected source and current sampling frequency.
5
EMPHASIS LED
The compact disc standard, as created by Sony and Philips, allows a high-
frequency boost to be employed during recording. This boost, called re-
cording pre-emphasis, increases the signal-to-noise ratio at high frequencies,
but must be countered by a high-frequency cut before playback to restore a
recording’s normal frequency response. De-emphasis may be done as the
recording is being mastered, or the compact disc (or digital audio tape)
may be made with the pre-emphasis still on, and the de-emphasis per-
formed in the playback unit.
The
emphasis LED
lights when the Nº36 detects recording pre-emphasis in
the digital program being processed, and subsequently employs its de-em-
phasis circuitry. In the Nº36, the de-emphasis filtering is done in the digital
domain.