ATI Audio MX200 - Manual (Page 13)

Audio Technologies Inc. 856-719-9900 [email protected] www. audio.com
The PPA-1 Rechargeable 24VDC Battery Pack mounts directly to the underside
of the MXS100 and allows approximately four hours of remote operation. A dual
mode charger is included for quick (3 - 4 hours) recharge. The PPA-1 uses
rugged sealed gel cells capable of 500 charge - discharge cycles (typical) with no
memory effect degradation. Replacement batteries are readily available from
distributor stock or from ATI.
MAINTENANCE
There is no routine maintenance required by your NANOAMP. 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 Wall Wart
power supplies. If all else fails, read your warranty in the front of this book (which
probably ran out yesterday) and call us for sympathy and overpriced parts.
Power
Supply
Levels
The recommended loaded DC input voltage range is 22VDC minimum to 32VDC
maximum. The audio circuits continue to work with reduced headroom below
22VDC but the VU meter will blink at full scale. Momentary surges up to 36VDC
will cause increased internal heating, but above 36V call ATI for some expensive
ICs.
Operating
Points
An internal reference voltage equal to 1/2 the supply voltage is generated by A15
in the MXS100 and MX200 and by A7 in the XPS100. All IC inputs and outputs
should show a DC level equal to this voltage when measured with a high
impedance meter. XLR audio inputs and outputs are capacitor coupled and
ground referenced. The expansion buss input is at the DC reference level and
must not be accidentally grounded by dangling audio interconnects cables.