Operation Under Asio; General; Channel Count Under Asio - RME Audio Fireface UCX II User Manual

9. Operation under ASIO

9.1 General

Start the ASIO software and select ASIO MADIface USB as the audio I/O device or the ASIO
audio driver.
The Fireface UCX II supports ASIO Direct Monitoring (ADM).
The Fireface UCX II MIDI I/Os can be used with both MME MIDI and DirectMusic MIDI.

9.2 Channel Count under ASIO

At a sample rate of 88.2 or 96 kHz, the ADAT optical input and outputs operate in S/MUX mode,
so the number of available channels per port is reduced from 8 to 4. At a sample rate of 176.4
and 192 kHz, the ADAT optical input and output operates in S/MUX4 mode, so the number of
available channels is limited to 2.
Note: When changing the sample rate range between Single, Double and Quad Speed the
number of channels presented from the ASIO driver will change too. This may require a reset of
the I/O list in the audio software.
Single Speed
Fireface Analog 1 to 8
Fireface SPDIF L / R
Fireface AES L / R
Fireface ADAT 1 to 8
Double Speed
Fireface Analog 1 to 8
Fireface SPDIF L / R
Fireface AES L / R
Fireface ADAT 1 to 4
User's Guide Fireface UCX II © RME
Quad Speed
Fireface Analog 1 to 8
Fireface SPDIF L / R
Fireface AES L / R
Fireface ADAT 1 to 2
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