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DC detected (Digital)
This warning message appears when the digital source signal
has too high DC component and the current VOLUME setting
exceeds a certain value. The digital DC detection protects all
analog outputs from faulty digital signals. They will be discon-
nected (relais) until the DC in the source signal has been re-
duced or eliminated. Alternatively, if the VOLUME setting is set
very low, the output will also be released again. For details see
chapter 34.23.
Power Fail
In case the operating voltage drops below 9.3V the internal
power supply of the analog I/Os is switched off (overcurrent
protection). However, the digital part will operate even with
only 5V. Therefore connecting a wrong power supply could
pretend a fully working unit - which doesn't receive or emit any
audio. This warning informs about the undervoltage problem.
Internal Error
During power-on the unit performs a self-test. When this test
fails USB will be deactivated, with record and playback no
longer functional. In such a case please contact your local
RME distributor.
The ADI-2/4 Pro SE also shows certain Info Messages during normal operation, to explain the
current state and to point out possible problems.
In AD/DA and DAC mode, a Non-Audio Channel Status causes the DA section to be muted. An
info message Non-Audio signal at SPDIF input gives a hint why there is currently no analog audio
at the outputs present.
In USB mode, an Emphasis Channel Status brings up the info message Emphasis detected at
SPDIF input. This reminds the user that the Emphasis indication gets lost when recording through
a computer.
On any change of the Basic Operation mode, the new mode is shown for 2 seconds in the display
(Preamp mode active, AD/DA mode active, USB mode active, Dig Through mode active).
When plugging in two connectors into the front with Balanced Phones mode Auto active, Balanced
Phones mode active will be shown briefly.
In case the deactivated Digital DC Protection detects high DC within the source signal, the mes-
sage DC detected on <channel name> is shown briefly.
User's Guide ADI-2/4 Pro SE - v 1.0
38
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