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.
shows the CPU module faceplate.
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