User's Manual
Table Of Contents
- Hub Installation Checklist – 6x60-degree
- Link Budget Parameters for 6x60 Hub
- Wireless Cable Modem Configuration – CXC150W
- W-CMTS BSR1000W Setup Guide
- Factory Settings BSR1000W
- Connecting to the BSR1000 CMTS
- Setting the System Passwords
- Configure the Ethernet IP Address
- Configure Cable IP Address
- Configure the CMTS
- Configure Downstream Port
- Configure Upstream Ports:
- Configure Basic Routing
- Save the Configuration
- Creating a static route from the server to the BSR1000
- Windows 2000 DHCP Server
- Time-of-Day Server Setup Guide
- BSR1000W SNMPc View and Community
- SolarWinds’ TFTP-Server
- Cable System Basics
- Reader Feedback
7 Link Budget Parameters for 6x60 Hub
The following numbers are for a system with Vyyo wireless cable modems at the customer
site and the V3000W W-CMTS at the Hub. The six sectors involve upconverters and other
devices.
Path Loss is primarily free space path loss in the 5 GHz band.
Free Space Path Loss (dB@5 GHz) = 112 + 20*log(miles).
Loss (dB)
100.0
110.0
120.0
130.0
0.25
1.25
2.25
3.25
4.25
5.25
6.25
7.25
Distance (Miles)
Figure 7-1: Free Space Path Loss at 5 GHz band.
At the UNII frequency, the loss due to rain is negligible. For example, a heavy rain
“cloudburst” (4 inches/hour) only adds 0.5 dB loss, about as much as a connector.
June 2003 Page 7-1