Lynx Studio LS-ADAT - Manual (Page 12)

LS-ADAT
Page 11
ADAT Channel Mapping and S/MUX
This section describes the mapping of LStream channels to LS-ADAT channels. This mapping varies
with sample rate since S/MUX is required to support sample rates above the standard ADAT sample
rate of 48 kHz.
At 44.1 kHz and 48 kHz there is a one-for-one correspondence between LStream channels and LS-
ADAT channels. All 16 input and output channels are available.
At sample rates above 48 kHz, the signal channel capacity (and the number of required LStream
channels) is reduced since S/MUX utilizes multiple ADAT channels for each signal channel. Refer to
the following table.
88.1/96 kHz Sample Rate 176.4/192 kHz Sample Rate
LStream
Channel
ADAT Channel LStream
Channel
ADAT Channel
1 1-2 1 1-4
2 3-4 2 5-8
3 5-6 3 9-12
4 7-8 4
13-16
5 9-10 16 – 5 NOT VALID
6 11-12
7 13-14
8 15-16
16-9 NOT VALID
S/MUX is enabled on demand, based on the sample rate currently selected for recording or playback.
As such, the mapping of channels will change when the sample rate changes. The user must be
keenly aware of this “automatic” re-mapping to avoid mixing and routing problems.
Clock Synchronization
The ADAT Clock control on the LStream page of the LynxTWO/L22 Mixer provides LS-ADAT
clock source selection as follows:
Clock Source Selection Action
Slave LS-ADAT clock is slaved to the host card system clock source. The
system clock source is selected on the Adapter page of the Mixer.
Optical In 1 The word clock derived from optical IN 1 port is the clock source
for the LS-ADAT and host card.
Optical In 2 The word clock derived from optical IN 2 port is the clock source
for the LS-ADAT and host card.
Sync In The word clock derived from optical SYNC IN port is the clock
source for the LS-ADAT and host card.
Important: If a clock source other than Slave is used, the LynxTWO/L22 clock source must also be
set to LStream 2 in the Adapter page of the Mixer.