ATI Audio MX100 - Manual (Page 10)

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lower front and rear cover screws of a single unit, to raise and to tilt it for easy use. In
addition, one or more sets of vertical stacking plates, mounting to the upper front and rear
cover screws of the bottom unit, allow multiple units to be stacked. Several units can be
desk mounted side by side and even stacked side-by-side using horizontal joiner kits
together with mounting base and stacker kits. P/N20617-501 is the angled base kit.
P/N20617-502 is the base plus one stacker kit (two high). P/N20617-503 is the base plus
two stackers (three high). P/N20617- 504 is the stacker kit by itself and P/N20604-504 is
a horizontal joiner kit.
Detailed instructions for mounting the protection plates and battery pack slides are
included with the PROK-1 and ABAG-1 if they have not been pre-assembled to the
mixer.
AUDIO CONNECTIONS
XLR type inputs and outputs are wired per figure 1 with pins 2 as HI and pins 3 as LOW.
Pin 1 of all input connectors is grounded and is the cable shield and DC return connection
for phantom microphone power. Pin 1 of the output connector is grounded. Active
balanced outputs require a reference ground connection to the receiving device for proper
operation. This ground can be provided by the rack frame or a studio buss connection but
is preferably carried through by the output cable shield.
POWER CONNECTIONS
Hum and noise performance of the XP100 can be degraded by poor DC ground
connections between it and the MX100. Use of the recommended rack and desk
mounting kits will assure a good ground connection between units by firmly strapping
their chassis together. CAUTION! The outer shell of the DC interconnect cables is
positive relative to the chassis. Do not allow a DC cable plugged into a powered unit to
hang loose where it might short against the chassis or rack frame.
MAINTENANCE
There is no routine maintenance required. If you have a problem, check panel LED
indicators to assure that the units have DC power, eliminate by substitution microphones,
input and output cables, connectors, downstream devices, Mixer to Expander
interconnect cables and power supplies. If all else fails, read your warranty in the front of
this book (even though it probably ran out yesterday) and call us for sympathy and
overpriced parts.