unD3IO
User Manual
Attero Tech LLC 2018
Page 7
614-00017 Rev 05_a
For the same connections but using a 2-core + shield cable, connect the positive and grounds as before but this time,
short the negative conductor to the shield at the source connection instead.
+
Source
+
-
Shield
Sink
Figure 4 - 3-Wire Unbalanced Source to Balanced Sink Connection
2.2.3 – Balanced Source to Unbalanced Sink
Use the following if using a single core cable with shield to connect a balanced source to an RCA or stereo jack input on
the unD3IO or to connect the XLR output from the unD3IO to an unbalanced input on another device. Connect the
positive output of the balanced source to the positive input of the unbalanced sink. Connect both the source and sink
input grounds together and short the negative input of the source to ground at the output of the source.
Source
+
Shield
Sink
+
-
Figure 5 - 3-Wire Balanced Source to Unbalanced Sink Connection
For the same connections but using a 2-core + shield cable, connect the positive and grounds as before but instead,
short the negative conductor to the shield at the sink end of the cable instead.
+
Source
+
-
Shield
Sink
Figure 6 - 3-Wire Balanced Source to Unbalanced Sink Connection
2.2.4 – Unbalanced Output to an Unbalanced Sink
To connect an unbalanced source to unD3IO RCA or stereo jack input, or connect the stereo jack output to an
unbalanced sink, connect the positive output to the sink’s positive input and connect the grounds together through the
cable shield.
+
+
Sink
Shield
Source
Figure 7 – Unbalanced Source to Unbalanced Sink Connection