Playback; Analog Recording; Digital Recording - RME Audio ADI-2 Pro User Manual

5.5 Playback

In the audio application being used, the ADI-2 Pro must be selected as output device. It can
often be found in the Options, Preferences or Settings menus, as Playback Device, Audio De-
vices, Audio etc. After selecting a device, audio data is sent to an analog or digital port, depend-
ing on which has been selected as playback device.
Increasing the number and/or size of audio buffers may prevent the audio signal from breaking
up, but also increases latency i.e. output is delayed.

5.6 Analog Recording

For recordings via the analog inputs the corresponding record device has to be chosen.
Channels 1/2 of the ADI-2 Pro have digitally controlled gain and four hardware reference levels.
The digitally controlled gain offers a gain setting in steps of 0.5 dB within a range of 0 dB to +6
dB, for fine-tuning the input sensitivity. The four hardware-based Reference Levels allow a
coarse adaption to the current source signal. The ADI-2 Pro has global as well as channel level
meters. Setting the correct Ref Level to avoid clipping/overload is easy to do.
The combo XLR/TRS sockets are designed for line signals. Sources that require higher input
impedances, like guitars, need an additional impedance buffer in front of the ADI-2 Pro.

5.7 Digital Recording

The easiest way to perform digital recordings with the ADI-2 Pro is to set the SRC to the cur-
rently used input (SPDIF or AES), then set the Clock to INT(ernal) and the desired sample rate
– then start recording.
The SRC serves as clock decoupler. When not using the SRC, the ADI-2 Pro must be in total
Sync to the external digital device, as either master or slave. Taking this into account, RME
added a comprehensive I/O signal status display to the ADI-2 Pro, showing sample frequency,
lock and sync status in the State Overview screen and the bottom status bar.
The sample frequency shown in the State Overview is useful as a quick display of the current
configuration of the unit and the connected external equipment. If no sample frequency is rec-
ognized, it will show - - (No Lock).
This way, configuring any suitable audio application for digital recording is simple. After con-
necting it the ADI-2 Pro displays the internal and external sample rate. This parameter can then
be changed in the application's audio attributes (or similar) dialog.
User's Guide ADI-2 Pro © RME
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