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Power Management Board (PMB)
Power Management Board (PMB)
PMB Component Layout
PMB Component Description
1–6
The PMB manages the power system and backup facility of iSTAR eX, charges the battery, and
supplies power to the GCM.
Figure 1-4 shows the iSTAR eX PMB.
The iSTAR eX PMB contains these major components:
RM Reader connectors – RS-485 Reader Busses (4 ports)
COM1, COM2 – RS-485 reader connectors to the GCM
Multiplex switch (S1) – used to connect RS-485 readers to either COM1 or COM2. Read1
and Read2 connect to COM1 and Read3 and Read4 connect to COM2, by default.
LEDs – indicators for power and system status of communications and RM reader bus
communications
Debug Port – for use by Software House technical support
Serial Peripheral Interface (SPI) – a synchronous serial data link that provides
communication between the iSTAR eX GCM and the PMB
Figure 1-4: iSTAR eX PMB Layout
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