User Manual

Sonik G2BT Base Transmitter User Manual
March 14, 2002 34 7M487C4
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The control chassis power supply has been designed by Mesa Power Systems. It has its own AC
power supply with provision battery-back-up for up to 15 minutes of operation. Internally, it uses
an
off-the-shelf AC-DC switching power converter. A simple micro-controller monitors the AC
supply, battery voltage and current, and battery charging. It communicates this status information
to the CPU via the SPI bus.
The back-up battery powers the control chassis, and does not power the RF power amplifiers, so
no RF output will be produced when operating off of the internal back-up supply. The internal
network interface will continue to operate off of the back-up supply.