R a d i o S y s t e m s , I n c .
D A - 2 / 4 x 4 b M a n u a l
5 / 0 7
P a g e 1 3
connections described above without duplicating the ground connection. Between
pieces of active balanced stereo equipment, then, 5 shielded conductors should be
run.
When testing active balanced equipment with single ended test equipment, do not
connect the - to test equipment ground. Most modern test equipment provides
balanced inputs. In many dual-trace oscilloscopes, balanced signals may be
displayed by running the two inputs in the “add” mode with one input switched to
invert. To perform a test with single-ended equipment, + and - outputs must be
tested independently and their results added. Testing only a single output results in
a 6 db loss in output level.
The active balanced equipment interconnection format makes possible state of the
art fidelity. Careful attention to detail and conservative practice will be rewarded
with outstanding flat frequency response, low distortion, and wide dynamic range.