User Manual
User's Guide Fireface UCX © RME
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Note: TotalMix is part of the hardware of each Fireface. Up to three mixers are available, but 
these are separated and can't interchange data. Therefore a global mixer for all units is not 
possible. 
When using more than one Fireface UCX the USB/FW bus might get overloaded. To prevent 
this connect all units to different busses. See chapter 32.3 and 32.4 for further notes on USB 
and FireWire performance. 
12. DIGICheck Windows 
The DIGICheck software is a unique utility developed for testing, measuring and analysing digi-
tal audio streams. Although this Windows software is fairly self-explanatory, it still includes a 
comprehensive online help. DIGICheck 5.34 operates as multi-client ASIO host, therefore can 
be used in parallel to any software, be it WDM or ASIO, with both inputs and outputs (!). The 
following is a short summary of the currently available functions: 
•  Level Meter. High precision 24-bit resolution, 2/10/28 channels. Application examples: Peak 
level measurement, RMS level measurement, over-detection, phase correlation measure-
ment, dynamic range and signal-to-noise ratios, RMS to peak difference (loudness), long 
term peak measurement, input check. Oversampling mode for levels higher than 0 dBFS. 
Supports visualization according to the K-System. 
•  Hardware Level Meter for Input, Playback and Output. Reference Level Meter freely con-
figurable, causing near zero CPU load, because calculated from the Fireface hardware. 
•  Vector Audio Scope. World wide unique Goniometer showing the typical afterglow of a 
oscilloscope-tube. Includes Correlation meter and level meter. 
•  Surround Audio Scope. Professional Surround Level Meter with extended correlation 
analysis, ITU weighting and ITU summing meter. 
•  Spectral Analyser. World wide unique 10-, 20- or 30-band display in analog bandpass filter 
technology. 192 kHz-capable! 
•  Bit Statistics & Noise. Shows the true resolution of audio signals as well as errors and DC 
offset. Includes Signal to Noise measurement in dB and dBA, plus DC measurement. 
•  Totalyser. Spectral Analyser, Level Meter and Vector Audio Scope in a single window. 
•  Channel Status Display. Detailed analysis and display of SPDIF and AES/EBU Channel 
Status data. 
•  Global Record. Long-term recording of all channels at lowest system load. 
•  Completely multi-client. Open as many measurement windows as you like, on any chan-
nels and inputs or outputs! 
To install DIGICheck, go to the \DIGICheck directory on the RME Driver CD and run setup.exe. 
Follow the instructions prompted on the screen. 
DIGICheck is constantly updated. The latest version is always available on our website 
www.rme-audio.com, section Downloads / DIGICheck. 










