User`s guide

User's Guide DIGI96/8 PST © RME
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9.2 Analog Output
Whenever the card's output operates in ADAT format the 2-channel analog output will play
back one of the four stereo pairs. The desired pair can be selected in the 'Track' field of the
Settings dialog.
The analog output level can be set coarse (four 6 dB steps) or fine using the faders in the field
'Volume'. Both methods operate simultaneously and with digital precision. The shown damping
values are exactly the ones used. The used technique avoids changes in frequency response
and distortion. Only the dynamic range will decrease at higher dampings, as the noise level of
the analog output stage remains unchanged.
9.3 ADAT Mode
The switch 'Force Adat' is a mighty function of the DIGI96/8 series. It forces the digital output
into ADAT mode (i.e. 8-channel operation).
The DIGI96 series allows the ADAT optical inputs and outputs to be used with stereo Sound
Manager applications. When an ADAT input signal is detected channels 1 and 2 will be auto-
matically used as the Left and Right inputs.
When using non ASIO-based audio software to playback a stereo file, the data can be sent
over the SPDIF or the ADAT interface! Activating the 'Force ADAT' setting option will change
the optical output to be in ADAT format with the stereo signal as tracks 1 and 2.
When the DIGI is set to pass through operation (constant monitoring of the input signal by se-
lecting 'Input' mode) it turns into a real-time SPDIF to/from ADAT converter, which operates in
hardware without any additional software.
In pass through mode activated 'Force Adat' allows to use the card as format converter from
SPDIF to ADAT. The stereo signal at the input is copied to all 4 stereo pairs of the output.
The switch 'A/S Conv.' forces the card's output into stereo operation. Then the card works as
format converter from ADAT to SPDIF. Use the 'Track' buttons to define which one of the 4
stereo input pairs will be routed to the SPDIF output.
9.4 Boot Option ADAT
The jumper JP4, labelled 'Boot ADAT', configures the card's state between power-on of the
computer and completed boot of the OS. Normally the jumper is set, the card starts in ADAT
mode. This option was introduced because several external devices, especially digital mixing
desks like Yamaha's 01V or Spirit's 328 will produce noise when an SPDIF signal is present at
their ADAT input.
The other way round will normally not cause any problem, as most SPDIF and AES/EBU input
circuits recognize 'wrong' formats and automatically mute the digital audio signal. To start the
card in SPDIF mode simply pull off jumper JP4.