User Manual Chapter 2

Chapter 2 - 2
• Site Survey. The installer performs a site survey with the appropriate client contact. You’ll need permission from
the building manager or owner regarding the antenna and IDU locations, and the RF cable run between the two.
Record the appropriate information on the Clearwire Site Survey Sheet.
1. Identify the IDU installation location. Keep in mind these considerations:
a. There must be an AC outlet within 6 feet.
b. The RF cable must be run to the antenna.
c. The IDU must be connected to the customer’s LAN.
2. Perform a radio test to confirm a link to the ISP. NOTE: the IDU must be configured with the proper IDU
IP address, subnet mask, Sector assignment, Tx and Rx channels and maintenance mode must be
disabled. See the IDU configuration section in chapter 3 of this manual
a. Set up a test antenna of the same type recommended by the network manager as close as
possible to the selected antenna location.
b. Connect the antenna to the test IDU. Using a GPS receiver or magnetic compass, point the
antenna toward the bearing of the base station.
c. Power up the test IDU and check the front panel LEDs. Normal Blue LEDs should be indicated
with no FAULT LEDs. A good link should be indicated. If not, try any or all of the following;
1. Slowly rotate the antenna to maximize signal strength.
2. Move the antenna location to avoid interference or obstructions. This may include raising
the antenna height.
3. Perform the Antenna Null Steering procedure (see appendix I)
4. Try to establish a link to a different base station, if available.
5. Try a higher gain antenna type.
d. Once a solid link is indicated contact the Network manager to confirm and asses the quality of the
link.
3. Identify the antenna installation location. Install the Outdoor Unit and Antenna for Compliance with FCC
RF Safety Regulations at a minimum height of 3 meters. The Outdoor Unit is mechanically and
permanently secured to the antenna as one complete assembly. The whole assembly is, at all times,
required to be installed on the roof of the building, pointing outward, or on an antenna tower or mast
located outside of the building.
4. The installation shall be performed by professional installers in accordance with Clearwire's procedures.
The installer should note that while the Clearwire Access Server System is a metropolitan area multiple
access networking system, the CPE end equipment is to be used exclusively for fixed, point-to-point
operations. Consider the following while planning a CPE installation:
a. Maximize antenna performance by keeping clear of obstructions.
b. Minimize visual impact.
c. Identify RF cable run and building entry point with aesthetics and system performance in mind.
5. Map out the RF cable run. Identify drilling locations, conduit runs, drop ceilings, etc. as needed.
Determine the minimum length of cable required.