RME Audio ADI-8 QS User Manual page 45

D-Sub Analog Inputs / Outputs
The 25 pin D-sub connectors of analog input and output are wired according to the Tascam
scheme, as shown in this table:
Channel 1+ 1-
D-sub 24 12
GND is connected to pins 2, 5, 8, 11, 16, 19, 22, 25. Pin 13 is unconnected.
The servo balanced input circuitry allows to use unbalanced connections with no loss in level.
For this to work, pins 3 (-) and 1 (GND) have to be connected.
The output circuitry does not operate in a servo-balanced way. When connecting unbalanced
devices make sure that pin 3 (-) stays unconnected.
TRS jacks analog inputs / outputs
The stereo ¼" TRS jacks of the analog inputs are wired according to international standards:
Tip = + (hot)
Ring = – (cold)
Sleeve = GND
The servo-balanced circuitry allows to use monaural TS jacks (unbalanced) with no loss in
level. This is the same as when using a TRS-jack with ring connected to ground.
2+ 2- 3+ 3- 4+
10 23 21 9
User's Guide ADI-8 QS © RME
4- 5+ 5- 6+
7 20 18 6 4
6- 7+ 7- 8+
17 15 3 1 14
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