Channel Count Under Wdm; Multi-Client Operation - RME Audio Fireface 400 User Manual

12.4 Channel Count under WDM

The Fireface's ADAT optical interface offers sample rates of up to 96 kHz using a standard
ADAT recorder. For this to work single-channel data is spread to two ADAT channels using the
Sample Multiplexing technique. This reduces the number of available ADAT channels from 8 to
4 per ADAT port.
Whenever the Fireface 400 changes into Double Speed (88.2/96 kHz) or Quad Speed mode
(176.4/192 kHz) all unusable devices are automatically removed.
WDM Stereo device
Fireface 400 Analog (1+2)
Fireface 400 Analog (3+4)
Fireface 400 Analog (5+6)
Fireface 400 Analog (7+8)
Fireface 400 SPDIF
Fireface 400 ADAT (1+2)
Fireface 400 ADAT (3+4)
Fireface 400 ADAT (5+6)
Fireface 400 ADAT (7+8)

12.5 Multi-client Operation

RME audio interfaces support multi-client operation. This means several programs can be used
at the same time. Also all formats, like ASIO, MME and GSIF can be used simultaneously. The
use of multi-client operation requires to follow two simple rules:
•
Multi-client operation requires identical sample rates!
I.e. it is not possible to use one software with 44.1 kHz and the other with 48 kHz.
•
Different software can not use the same channels at the same time.
If for example Cubase uses channels 1/2, this playback pair can't be used in WaveLab, no mat-
ter if ASIO or WDM. However, this is no limitation at all, because TotalMix allows for any output
routing, and therefore a playback of multiple software on the same hardware outputs. Note that
identical inputs can be used at the same time, as the driver simply sends the data to all applica-
tions simultaneously.
ASIO-Multiclient
RME audio interfaces support ASIO multi-client operation. It is possible to use more than one
ASIO software at the same time. Again the sample rate has to be identical, and each software
has to use its own playback channels. Again the inputs can be used 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 already occupied. Therefore DIGICheck
is able to analyse and display playback data from any software, no matter which format the
software uses.
Double Speed
Fireface 400 Analog (1+2)
Fireface 400 Analog (3+4)
Fireface 400 Analog (5+6)
Fireface 400 Analog (7+8)
Fireface 400 SPDIF
Fireface 400 ADAT (1+2)
Fireface 400 ADAT (3+4)
Fireface 400 ADAT (5+6)
Fireface 400 ADAT (7+8)
User's Guide Fireface 400 © RME
Quad Speed
Fireface 400 Analog (1+2)
Fireface 400 Analog (3+4)
Fireface 400 Analog (5+6)
Fireface 400 Analog (7+8)
Fireface 400 SPDIF
Fireface 400 ADAT (1+2)
Fireface 400 ADAT (3+4)
Fireface 400 ADAT (5+6)
Fireface 400 ADAT (7+8)
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