A
ddendA
– 3
L-12 / Sep 2014
Note each power supply is fitted with a 3-wire grounded AC cord that
should be plugged into a “clean” AC power source, that is, an AC source
that feeds only the control room audio gear. This source should be a separate
feed from those powering lighting, air-conditioning, or any other non-audio
machinery. The third pin ground wire of the AC source should be tied to
the central system ground point.
The power feed recom-
mended in the text is often
installed and referred to in
studios as an “isolated AC
ground” outlet. It is usually
orange in color.
Energizing
Assuming the L-12 control surface mainframe is properly placed, and its PSE-L power
supply correctly rackmounted and connected to the control surface, you may now energize
the rackmount power supply by plugging it into the AC mains. The power supply’s front
panel green “POWER” LED should light up to indicate that the power supply is on. The
control surface’s switches will assume factory default settings.
Note: To de-energize the control surface, unplug the rackmount power supply’s AC
cord from the AC mains. Never de-energize the control surface by disconnecting the
cable that connects the control surface and power supply together.
