Vanu Inc. 0PW1P0010 用户手册
Vanu Software Radio GSM Base Station
16
GPS Timing Source
The GPS Timing Source simply provides a 10 MHz clock signal and a 1 pulse per second signal to the
Protium digital hardware for precision timing. It must be locked onto enough GPS satellites to operate
properly, and it will indicate a lock with an illuminated LED on the front panel.
Connections
Power Cable
Coax Cable to
External Antenna
Serial Port Connection to
Major Alarm Port on
ADC Remote Unit
Coax Cable from 1 PPS Port
to Protium RF
Coax Cable from 10 MHz Port
to Protium RF
Figure 7: GPS Timing Source Connections
Qty Connection
1
Power cable
1
Coax cable from the 1 PPS port to the Protium RF front-end
1
Coax cable from the 10 MHz port to the Protium RF front-end
1
Coax cable to the external antenna
1
Cable from serial port to major alarm port on ADC Remote Unit
Troubleshooting
The LEDs on the front panel indicate whether a lock has been achieved. After installation, the lock and
fault LEDs will both be on for a short period of time on the order of 10-15 minutes until the GPS clears
all of the errors out of its buffer.
3. BSC Site
The Vanu Software Radio base station controller (BSC) is the network node that runs radio resource
management, and manages the connections to the GSM Core Network. The BSC and TRAU/RAU are
built on an HP Server platform, using gigabit ethernet for interconnect.