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5.4.2 Digital In
When Digital In is selected, the card will slave to the clock that is presented to its digital
inputs. In the case of the E44, where there are two pairs of digital inputs available, you can
choose between “Digital In 1” or “Digital In 2”. As with word clock, it is crucial that the
clock source be set to the same sample rate as the project or audio file being played.
If the clock source is a SPDIF device, make sure that the digital input is configured for
SPDIF (see Section 5.1: Hardware Installation).
5.4.3 Multiple Lynx cards
The E22/E44 cannot be used in a system with Lynx PCI cards, such as the AES16 or
LynxTWO. However, multiple E22/E44 and Lynx AES16e cards can be used in one
computer. Up to four of any combination of PCIe Lynx cards can be used in a single system.
In a multi-card system there are two primary options for insuring clock synchronicity:
A. The first way is to have one Lynx card be the clock master. In this scenario, clock is
distributed internally from one card to the others. Each Lynx card has two clock
header connections on the PCIe edge of the board. One connector is labelled “Clock
In” and the other is labelled “Clock Out”. The Lynx CBL-ICC cable is used to
connect these ports together.
Connect the CBL-ICC cable from the “Clock Out” of the card that you wish to be
Card #1, to the “Clock In”: of Card #2. If there are more than two cards in the system,
continue to daisy chain: “Clock Out” from card 2 to “Clock In” for card #3, etc. If
there are four cards in the system, we would not recommend this clock method.
Instead, all cards should be clocked externally for optimal performance.
In multiple Lynx card configurations, cards are identified numerically as Card #1,
Card #2, etc. in the Lynx Mixer as well as in the driver devices that you will see in
your recording software. The card order can be changed after the fact by the user,
from within the Lynx Mixer. See Section 8.1.2: Setting device order. In a multi-card
configuration it is essential that that the card that is the clock Master be Card #1.
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