RME Audio SteadyClock, User Manual

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User’s Guide ADI-8 QS
© RME
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11.2 Line Out
The ADI-8 QS has 8 balanced Line outputs on the rear,
provided by 1/4" TRS and a 25-pin D-sub connector. They
have their own output drivers respectively and can there-
fore – in contrary to the inputs – be used simultaneously.
The electronic output stage of the TRS jacks is built in a
servo-balanced design which handles unbalanced (mono
plugs) and balanced (stereo plugs) correctly, automati-
cally adjusting the level reference. The maximum output
level is +21 dBu.
When sel24 dBu the LEDs +19 dBu and +24 dBu
are lit at the same time, because the TRS jacks stay at the
+19 setting, while the D-sub connector outputs are oper-
ated in the +24 setting.
The electronic output stage of the D-sub connector does not operate servo-balanced! When
connecting unbalanced equipment, make sure pin 3 of the XLR output is not connected. A
connection to ground can cause a higher THD value (higher distortion)!
The 25-pin D-sub connector follows the pinout known from devices manufactured by Tascam
(pinout see chapter 16.9). Your local dealer will supply analog breakout multicores D-sub to
XLR in Tascam pinout in different lengths. The maximum output level at the D-sub connector is
+27 dBu.
Each output channel has its own 7-segment level meter, so every channel can be checked for
output signal and overloads easily. The level data are taken directly in front of the DA-converter,
so behind the digital level settings of Output Trim and Global Output Level. The red LED OVR
lights up 0.2 dB before full scale level (-0.2 dBFS).
To maintain an optimum level for devices connected to the analog outputs, the ADI-8 QS inter-
nally uses hi-quality electronic switches, which introduce no additional noise or distortion to the
audio path. The key OUTPUT allows for a perfect adaptation of all 8 channels to the most often
used studio levels. The different output levels guarantee optimal conversion results, while still
being compatible to any attached analog equipment.
The ADI-8 QS uses the following level references:
Reference 0 dBFS @ Headroom @ +4 dBu Other RME devices
+24 +24 dBu 20 dB -
+19 +19 dBu 15 dB HiGain
+13 +13 dBu 9 dB +4 dBu
+4.2 +4.2 dBu 12 dB at -10 dBV -10 dBV
The s4.2 dBu equals -10 dBV with 12 to 15 dB headroom. Set to +24 dBu the ADI-8 QS
is compatible to SMPTE (+24 dBu @ 0 dBFS, +4 dBu with 20 dB of headroom).