User Manual

ManualsBrandsRME ManualsAudio Interfaces & SystemsFireface UC - 36 Channel USB Audio/MIDI Interface

User's Guide Fireface UC © RME

When using more than one Fireface UC the USB bus might get overloaded. To prevent this

connect all units to different USB busses. This should be possible without further hardware as

many popular USB 2.0 interfaces come as twins, which can be checked in the Device Manager

as follows:

• Connect the Fireface UC to a USB port

• Start the Device Manager, View set to ‘Devices by Connection’

• Expand ACPI x86-based PC, Microsoft ACPI compatible System, PCI bus

Here you usually find two entries of a USB2 Enhanced Host Controller. All USB devices are

connected via a Root Hub, the Fireface UC will show up here too. By a simple reconnection to

other ports this view lets you check to which one of the two controllers the Fireface is connected

to. And with two units, if they use the same controller or not.

This information can also be used to makes sure that an external USB hard drive will not inter-

fere with the Fireface UC, by ensuring its connection to a different bus (controller).

Especially with laptops it can be seen that all internal devices and all sockets are connected to

the same controller, and that the second controller is not used at all. Then all units operate on

the same bus and fight against each other for bandwidth.

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 5.5 operates as multi-client ASIO host, therefore can be

used in parallel to any software, with both inputs and outputs (!). The following is a short sum-

mary 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.

Vertical and horizontal mode. Slow RMS and RLB weighting filter.Supports visualization ac-

cording 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.

• 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!

• Totalyser. Spectral Analyser, Level Meter and Vector Audio Scope in a single window.

• Surround Audio Scope. Professional Surround Level Meter with extended correlation

• ITU1770/EBU R128 Meter. For standardized loudness measurements.

• 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.

• 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