MyTek 8X192 ADDA User Manual page 14

NORMAL OPERATION. AD AND DA ON EXTERNAL CLOCK OTHER THAN WCK.
5.
AD FEEDING THE RECORDER, DA MONITORING RECORDER
In this mode both the AD and DA run on an external clock. Although this mode does not provides the
lowest jitter performance it might be desirable for systemic reasons. For example a second 8X192 unit
running can be coupled with a master 8X192 unit via Firewire cable only. In this case the clock for the
second unit is provided via a Firewire card (DIOCARD1 in this example). External recorders (such as
DAW etc) can be either AD digital outputs (any format: AES or DIOCARD1 or DIOCARD2), converter
Worclock outputs, or can run in asynchronous Firewire mode.
This example shows 44.1 PCM, but any FS can be any selected, including DSD and 128xDSD. Also
instead of AES any other digital input to DA can be selected depending on a particular system
configuration.
The unit will output on its BNC outs Wordclock corresponding to the sampling frequency provided
externally unless it's divided by using WCK button. If the DA converter receives no selected digital in OR
this input is not synchronous with AD clock, the LED will flash and DA converter will mute. The Sample
Rate has to be selected manually to match wck or its nearest approximation. WCK will be the base of
sampling rate. If no WCK source is detected, WCK LED will flash and unit will not pass signal.
FEED THROUGH OPERATION. AD AND DA ON INTERNAL CLOCK.
6.
AD FEEDING DA DIRECTLY
In this mode both the AD and DA run on an external clock. Although this mode does not provides the
lowest jitter performance it might be desirable for systemic reasons. For example a second 8X192 unit
running can be coupled with a master 8X192 unit via a Firewire cable only. In this case the clock for
second unit is provided via Firewire card (DIOCARD1 in this example). External recorders (such as DAW
etc) can be either AD digital outputs (any format: AES or DIOCARD1 or DIOCARD2), converter Worclock
output, or can run in asynchronous Firewire mode. In this mode signal is fed from AD to digital outputs and
also to DA directly. This mode may be usefull when conversion latency has to be minimized during the
recording. It functionally corresponds to a multitrack tape machine always on"input".
This example shows 44.1 PCM, but any FS can be any selected, including DSD and 128xDSD. Also
instead of AES any other digital input to DA can be selected depending on a particular system
configuration.
The unit will output on its BNC outs Wordclock corresponding to the sampling frequency provided
externally unless it's divided by using WCK button. If the DA converter receives no selected digital in OR
this input is not synchronous with AD clock, the LED will flash and DA converter will mute. The Sample
Rate has to be selected manually to match wck or its nearest approximation. WCK will be the base of
sampling rate. If no WCK source is detected, WCK LED will flash and unit will not pass signal.
LED ON
LED OFF
LED ON
LED OFF
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