Speck Electronics Xtramix - Manual (Page 12)

The Xtramix is delivered in a special, protective container and was
carefully inspected both mechanically and electrically before shipment.
It should be physically free of mars and scratches and in perfect
electrical order upon receipt. To confirm this, the product should be
inspected for physical damage that may have occurred in transit. Any
damage should be reported to your dealer and delivery company as soon
as possible.
The Xtramix will operate satisfactorily over a wide range of ambient
temperatures, and the power supply will operate from 10 to 50 degrees
C. If the power supply is installed in an equipment rack that also
contains heat producing equipment such as power amplifiers or other
power supplies, adequate ventilation should be provided. This will
prolong component life and maximize operational stability.
While the internal circuitry of the Xtramix is fully shielded by the steel
chassis, installation should nevertheless be planned to avoid locating the
Xtramix or any low level audio equipment immediately adjacent to
power amplifiers, power supplies, or any source of Electromagnetic
emissions.
To protect operating personnel, the National Electrical Manufacturers
Association (NEMA) recommends that the instrument panel and rack
cabinet be grounded. All Speck power supplies are equipped with a
three conductor power cord which, when plugged into an appropriate
receptacle, grounds the power supply. The offset pin on the power cord's
three-prong plug is the ground wire.
The three conductor line cord and plug assembly is wired in accordance
with NEMA convention (line - black, Neutral - white, and safety earth -
green). Audio signal grounds and DC grounds from the mixer are
isolated from the AC safety earth.
When using the Xtramix and its power supply outside North America, it
may be necessary to adapt a different power cord for that specific
country.
8 Chapter 2 Initial Preparation
Unpacking and
Inspection
Grounding
Environmental
Considerations
Initial Preparation
CAUTION!
DO NOT REMOVE, DEFEAT, OR DISABLE THE SAFETY
EARTH TERMINAL ON THE POWER CORD. DO NOT USE
A GROUND LIFT ON THE POWER SUPPLY.