Steinberg Nuendo DD8 Mode D'emploi page 21

TDIF AUX
Carries the channels 5 to 8 in Double Speed mode. Transmission of
channels 9-16 in Copy Mode.
General tips for TDIF operation
TDIF and word clock
When the Nuendo DD 8 is slave, no additional word clock connection is
necessary. In case DA88 and/or DA38 are slave, the word clock output
of the Nuendo DD 8 has to be connected to the word clock input of the
first (master) recorder. When using more than one recorder, a special
sync cable (Tascam part number PW-88S) is needed.
7.3 Input State Display
The input state is being displayed by means of 16 LEDs. A missing or
invalid input signal is indicated by slow flashing of the SOURCE LED. In
case ADAT or TDIF are selected all four SYNC and Emphasis LEDs are
showing the same information. In DS mode both two and two LEDs
show the state of the MAIN (1/2) and the AUX (3/4) inputs.
If MAIN and AUX are not synchronous to each other, the corresponding
input's SYNC LEDs will be quickly flashing. If the input is not chosen as
clock reference, SyncCheck takes the chosen clock (internal, external
etc.) as reference and compares it to the clocks of the inputs. Non syn-
chronous inputs will be indicated by quick flashing of the correspond-
ing SYNC LEDs.
If the TDIF input signal contains emphasis information, all four EMPHASIS
LEDs in the output state area will light up. The AES/EBU output channel
status will then be changed from 'no emphasis' to '50/15 µs' (emphasis).
Because this coding cannot be changed manually, and unfortunately
does not necessarily have to be correct in the source, we chose red LEDs
to give both a note and warning.
Each channel's audio level is shown by a level LED. The green LED be-
comes active from -90 dBFS and above, a higher level yields brighter
light. Thus only one LED is necessary to see if there is an audio signal or
digital zero, only noise floor or a useful signal.
NUENDO DD 8
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