Graham-Patten SoundPals, User Manual

Page: 103 / 117

SoundPals User's Guide Appendix B • 95
Appendix B.
External Power
About Power Supplies
An external power supply conforming to the specifications listed in the
following “
Power Supply Specifications ” section must be used to
guarantee that published SoundPals performance figures are met. Any
power supply meeting these specifications will supply adequate power
for a single SoundPals module. Although the specification is written for
power supplies running from AC line inputs, DC (battery) sources may
be used if they meet all of the listed requirements.
CE Compliance
For CE compliance, the power supply that you use must comply with the
following requirements:
•
Low Voltage Directive 73/23/EEC
•
EMC Directive 89/336/EEC
•
EMC Directive 93/68/EEC
•
The connector locking ring must be tight.
Portable Power Sources
For portable SoundPals power sources, sealed lead-acid , nickel
cadmium or alkaline primary batteries may be used. However, the
maximum voltage must
not exceed 8.6 volts, and a minimum of 5.6 volts
is required for normal operation. Current drain will be from 150 to 350
mA, depending on the model in use.