RME Fireface UCX II 40-Channel USB-B Audio/MIDI Interface User Manual
Page 18
 
18
User's Guide Fireface UCX II
© RME
Buffer Size (Latency)
The setting
Buffer Size
determines the latency between incoming and outgoing ASIO and WDM
data, as well as affecting system stability (see chapter 9.1). 
 
USB Diagnosis
indicates USB transmission errors. The display will be reset on any start of a
playback/record. More information can be found in chapter 40.3. 
 
 
Output Format 
Word 
– Single Speed
The word clock output signal usually equals the current sample rate. Selecting
Single Speed
causes the output signal to always stay within the range of 32 kHz to 48 kHz. So at 96 kHz and 
192 kHz sample rate, the output word clock is 48 kHz. 
 
Optical
The optical TOSLINK output can operate as ADAT or SPDIF output. ADAT: includes channels 
ADAT 1 to 8. SPDIF: includes channels SPDIF opt. L/R, in TotalMix ADAT ½. In SPDIF mode 
Channel Status is fixed to Consumer. 
 
SPDIF
The output SPDIF coaxial (RCA) can have the Channel Status Professional or Consumer. For 
further details please refer to chapter 21.3. 
 
 
Options 
DSP - EQ+D for Record
Switches EQ and Dynamics of all input 
channels into the recording path. In case 
Loopback has been activated the EQ 
and Dynamics of the Output channel are 
within the recording path. See also chap-
ter 27.6. 
 
TMS
activates the transmission of
Channel Status data and Track Marker 
information on AES and SPDIF inputs. 
In case these information are not re-
quired the feature should be turned off. 
 
Word Clock In Termination
Checking this option terminates the word 
clock input internally with 75 Ohms. 
 
Word Clock Output
This option switches the BNC socket 
into word clock output mode. 
 
WDM Devices
Reduce the number of WDM devices to 
the ones really needed to improve per-
formance of the operating system.