True to the Music
Radial Engineering Ltd.
OX8
™
User Guide
7
INTERNAL GROUNDING OPTIONS
The Radial OX8 features two internal grounding options
that will be of interest to system engineers when integrating
the OX8 into complex audio-visual systems. Most users will
not need these options and can accept the factory default
settings.
Internal Ground Lift - Each Channel
Each channel’s transformer features an internal ground
switch that re-connects the ground around the transformer.
It may be used on a per-channel basis to accommodate
specific grounding needs. For example, it may be neces-
sary to set this switch to closed for devices that have a
floating ground, like battery powered laptop computers or
devices powered with an AC to DC adaptor.
By default this switch is set to open, or lifted (out position)
so the transformer can decouple equipment connected to
the ISOLATED outputs. Pushing the switch in (closed) will
connect the input ground to the output ground at the ISO-
LATED output for that channel.
Internal Chassis Ground Lift - All Channels
All connectors are 100% isolated from the steel chassis
allowing chassis and signal ground to be kept separate.
However, a single internal switch is provided to connect
the pin-1 cable shields to the chassis without modifying the
OX8. By default, this switch is factory set to open or “lifted”
allowing the chassis to “float” ungrounded.
Should a specific grounding scheme require the cable
shields to be bonded to the chassis simply set this switch
to closed (pushed in position). The switch may be accessed
through a small hole in the side of the steel chassis or by
removing the top cover. The chassis ground switch does
not effect the isolation provided by the transformer at the
ISOLATED output.
On the rear panel a ground screw provides a convenient
point to bond the chassis. Use a heavy gauge solid copper
wire to bond the OX8 chassis to your technical ground.
Each channel has a lift switch
directly below the transformer.
Access the internal chassis ground
lift switch through a small hole
in the side of the chassis.
Rear panel chassis screw used
for bonding to technical ground.
Summary of Contents for OX8
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