Coastcom D/I Mux III System User Manual page 48

Chapter 1. System Overview and Modes of Operation
Code download occurs by external indication when a PCMCIA card is inserted, and an
NVRAM power-up is initiated by pressing the ACO and BYP buttons for one minute, at
system power-up. During the power-up, the AMCU will compare its software revision with
that on the PCMCIA card and, if different, it will download the code to the AMCU. For
information about code download through menu selection, see Chapter 4. Configuration
and Operation.
AMCU Power Consumption
The AMCU consumes more power on the +5 V line than does the CCU, due chiefly to the
RISC processor, peripheral Integrated Circuits (ICs), and the Ethernet 10Base-T port.
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