Input Trim; Output Trim; Id (Id) - RME Audio ADI-8 QS User Manual

When all LEDs of a column are turned off, the corresponding attenuation is:
Channel 8 -6 dB
Channel 7 -12 dB
Channel 6 -18 dB
When changing the Global Output Level the individual settings of Output Trim are maintained.
So the gain of all channels can be increased or decreased without them loosing their level rela-
tions.

9.3 Input Trim

Default: 0 dB
Available settings: 0 up to +6 dB in steps of 0.5 dB
Additionally to the four hardware-based reference levels a digital amplification of up to +6 dB
can be applied to any input channel. This allows for an individual and separate level calibration
of the AD-conversion. At the same time the ADI-8 QS is provided with a near stepless input
sensitivity from +7 dBu up to +24 dBu, adjustable in steps of 0.5 dB.
Naturally the digital amplification reduces the signal to noise ratio according to the current gain.
At +6 dB the maximum SNR of 114 dB is reduced to 108 dB.

9.4 Output Trim

Default: 0 dB
Available settings: -6 dB up to +6 dB, in steps of 0.5 dB
Additionally to the four hardware-based reference levels a digital gain change of +/- 6 dB can be
applied to any output channel. This allows for an individual and separate level calibration of the
DA-converter outputs, as required in a surround monitoring setup.
With a full scale signal (0 dBFS) positive values cause an overload of the DA-converter, but this
is clearly shown on the output level meter. Using the ADI-8 QS as converter for surround moni-
toring, overloads are usually no issue. The typical operation range of the volume control is
about -6 and -12 dB. With this there is enough headroom available for an amplification of up to
6 dB.

9.5 ID (Id)

Default: 1
Available settings: 1, 2, 3, 4, 5, 6, 7, 8
To remote control more than one ADI-8 QS each device can have its own ID, providing a sepa-
rated remote control of multiple devices via a single MIDI channel.
I64 MADI Card: The ID defines the 8-channel group within the MADI signal that is used to insert
the device's audio data:
ID 1: channels 1-8
ID 2: channels 9-16
ID 3: channels 17-24
18
Channel 5 -28 dB
Channel 4 -40 dB
Channel 3 -54 dB
ID 4: channels 25-32
ID 5: channels 33-40
ID 6: channels 41-48
User's Guide ADI-8 QS © RME
Channel 2 -78 dB
No LED Mute
ID 7: channels 49-56
ID 8: channels 57-64