Channel Count Under Wdm; Multi-Client Operation - RME Audio Fireface UC User Manual

9.4 Channel Count under WDM

The Fireface's ADAT optical interface offers sample rates of up to 192 kHz using a standard
ADAT recorder. For this to work single-channel data is spread to two or four ADAT channels
using the Sample Multiplexing technique. This reduces the number of available ADAT channels
from 8 to 4 or 2 per ADAT port.
Whenever the Fireface changes into Double Speed (88.2/96 kHz) or Quad Speed mode
(176.4/192 kHz) all devices no longer available vanish automatically.
WDM Stereo devices
Fireface UC Analog (1+2)
Fireface UC Analog (3+4)
Fireface UC Analog (5+6)
Fireface UC Analog (7+8)
Fireface UC SPDIF
Fireface UC AS (1+2)
Fireface UC ADAT (3+4)
Fireface UC ADAT (5+6)
Fireface UC ADAT (7+8)
Note: Under Vista/7 the analog outputs 1/2 show up as Loudspeaker.

9.5 Multi-client Operation

RME audio interfaces support multi-client operation. Several programs can be used at the same
time. The formats ASIO and WDM can even be used on the same playback channels simulta-
neously. As WDM uses a real-time sample rate conversion (ASIO does not), all active ASIO
software has to use the same sample rate.
However, a better overview is maintained by using the channels exclusively. This is no limitation
at all, because TotalMix allows for any output routing, and therefore a playback of multiple soft-
ware on the same hardware outputs.
Inputs can be used from an unlimited number of WDM and ASIO software at the same time, as
the driver simply sends the data to all applications simultaneously.
RME's sophisticated tool DIGICheck is an exception to this rule. It operates like an ASIO host,
using a special technique to access playback channels directly. Therefore DIGICheck is able to
analyse and display playback data from any software, no matter which format it uses.
Double Speed
Fireface UC Analog (1+2)
Fireface UC Analog (3+4)
Fireface UC Analog (5+6)
Fireface UC Analog (7+8)
Fireface UC SPDIF
Fireface UC AS (1+2)
Fireface UC ADAT (3+4)
Fireface UC ADAT (5+6)
Fireface UC ADAT (7+8)
User's Guide Fireface UC © RME
Quad Speed
Fireface UC Analog (1+2)
Fireface UC Analog (3+4)
Fireface UC Analog (5+6)
Fireface UC Analog (7+8)
Fireface UC SPDIF
Fireface UC AS (1+2)
Fireface UC ADAT (3+4)
Fireface UC ADAT (5+6)
Fireface UC ADAT (7+8)
19