Orban 424A Operating Manual page 13

Fig. 8-3:
GROUNDING
SCHEMES
GENERAL
INPUT/OUTPUT
CONNECTION RULES
INPUT
1)
Always
use
"+"
and
as the
two
input terminals to the
424A.
2)
When
the
424A
is
driven
from an unbalanced
source,
connect
shield
both
to circuit
ground of source,
and
to chassis ground
of
424A.
3)
When
the
424A
is
driven
from
a balanced source, connect
shield at source
end
to chassis ground.
Do
not connect
shield at
424A
end.
OUTPUT
1)
On
the
424A
output,
connect
shield at
424A end
to chassis
ground
(whether driving
balanced
or
unbalanced).
Do
not connect shield at
other
end.
2)
When
driving
a balanced
load,
jumper
circuit
ground to chassis
ground on
424A
(on
rear panel).
When
driving
an unbalanced
load,
do not attach
jumper.
3)
When
driving
an unbalanced
load,
connect the the
input
ground of the
driven
equipment
to the 424A's circuit
ground
(not to
the 424A's
(-)
output).
Connect the hot side of the driven equipment's
input to
the 424A's
(+)
output.
9