BSS Audio
FCS-930/960 User Manual v3.0
Page 6
eliminate potential ground loop hums by removing signal currents from the cable
screen.
5
.3 Ground loop control
Strict adherence to the wiring conventions noted above within a fully balanced
signal system will yield the best possible results with none of the problems
normally associated with interconnected audio equipment.
Wherever possible, cable screens should not be connected to any signal pin, but
rather left to perform a cable shielding function only.
Where it is not possible to control all of the external cabling, it might become
necessary to have the internal electronic ground of your unit separated from the
case safety ground. Provision is made internally within the FCS-930/960 to
separate these two grounds at a convenient point, or to add a suitable impedance
network as part of a house system requirement.
Please refer to section 9.1; Chassis/0v Removal
for information on this procedure.
Under no circumstances should the safety ground wire be removed from the
mains AC power connector as an interim measure to achieve similar results.
5
.4 Powering up
When the FCS-930/960 is switched on by operating the power on-off switch
located on the rear panel, the front panel LED showing the normal MODE will be
illuminated. This indicates to you that the internal power supply circuitry is
functioning correctly. The unit will also be in it’s bypass mode. Should you
subsequently have the EQ IN switch selected before power up, there will be a
slight delay before the bypass relays operate, to allow time for the internal circuitry
to settle down. This ensures a silent power up without danger of causing damage to
other equipment connected to the units outputs.
