ADCP-75-210 • Issue 1 • March 2007
Page 13
© 2007, ADC Telecommunications, Inc.
1.7.2 Central Processing Unit (CPU) Module
The Central Processing Unit (CPU) Module is a cPCI-based, single-board x86 computer with
disk running on a Linux operating system. Each RAN chassis has one CPU module. The CPU
runs a process management program that manages all RAN hardware including RF and digital
equipment. The program also manages RF signal gain and monitors signal presence and quality.
Figure 9 shows the CPU module faceplate. Table 5 describes the faceplate components called
out in the figure.
Figure 9. CPU Module Faceplate
CPU
Table 5. CPU Module Faceplate Components
REF # DESIGNATION DEVICE FUNCTIONAL DESCRIPTION
1 USB1 USB connector Front panel input/output for USB connectivity
2 COM 1 RJ-11C connector Front panel interface for COM1
3 (Unmarked) Status LEDs LED 1 is POST (red on start-up, turns green on
successful completion of start-up self test); LED 2
& 3 are undefined; LED 4 (blinking green) indicates
disk or flash memory activitity
21251-A
VIDEO
CONNECTOR
ETHERNET
CONNECTOR
UNIVERSAL
SERIAL BUS
CONNECTOR
COM 1
CONNECTOR
STATUS
LEDs
1
7
6
5
4
2
3
ACTICITY
LEDs
RESET
BUTTON
