User's Manual

User’s Guide ADI-2 DAC v2.2 © RME

24.3 Multi-interface Operation

OS X supports the usage of more than one audio device within an audio software. This is done

via the Core Audio function Aggregate Devices, which allows to combine several devices into

one. All units have to be in sync, i.e. have to receive valid sync information via a digital input

signal, then all channels can be used at once.

If one of the devices is set to clock mode Master, all others have to be set to clock mode Slave,

and have to be synced from the master by feeding AES, SPDIF or ADAT. The clock modes of

all units have to be set up correctly in their Settings dialog.

25. DIGICheck Mac

The DIGICheck software is a unique utility developed for testing, measuring and analysing

digital audio streams. Although this software is fairly self-explanatory, it still includes a

comprehensive online help. DIGICheck 0.73 operates in parallel to any software, currently only

showing the SPDIF input data. The following is a short summary of the currently available func-

tions:

• Level Meter. High precision 24-bit resolution, 2 channels. Application examples: Peak level

measurement, RMS level measurement, over detection, phase correlation measurement,

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.

• Spectral Analyser. World wide unique 10-, 20- or 30-band display in analog bandpass filter

technology. 192 kHz-capable!

• Vector Audio Scope. World wide unique Goniometer showing the typical afterglow of a

oscilloscope-tube. Includes Correlation meter and level meter.

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

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

analysis, ITU weighting and ITU summing meter.

• 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.

• Completely multi-client. Open as many measurement windows as you like, on any

channels and inputs or outputs!

To install DIGICheck, go to www.rme-audio.com, section Downloads / DIGICheck. Download

the latest version, unzip and run the installer. Follow the instructions prompted on the screen.