AW900-SPEC USER’S MANUAL 900 MHz Site Survey Spectrum Analyzer Industrial-grade, long-range wireless Ethernet systems AvaLAN W I R E L E S S
AW900-SPEC User’s Manual Thank you for your purchase of the AW900-SPEC Site Survey Spectrum Analyzer. The AW900-SPEC includes: • • • • AW900-SPEC Site Survey Spectrum Analyzer 120 VAC to 12 VDC power adapter AW-POE Power Over Ethernet Injector AW2-900 2.5 dBi Omnidirectional Antenna If you have any questions when configuring your AvaLAN system, the best place to get answers is to visit www.avalanwireless.com. You will also find the latest updates there.
User’s Manual AW900-SPEC Operational summary The AW900-SPEC is a tool that allows you to investigate sources of RF interference in the 900 MHz band and to make better decisions about how to configure your AvaLAN wireless network. Leveraging the RSSI (Received Signal Strength Indication) capability from the AvaLAN AW900xTR, this unit inexpensively provides a browser-interfaced RF spectrum analysis capability with appropriate frequency range and sensitivity for site survey applications. Physical Setup 1.
AW900-SPEC User’s Manual Using the Spectrum Analyzer 1. If you will be using a Windows PC, download the AvaLAN IP Discovery Utility from our website and extract ipfinder.exe from the zip archive, placing it on your desktop or in a convenient folder. http://www.avalanwireless.com >> Support >> Downloads Note that this utility runs only in MS Windows, not Linux or MAC. If you must use a non-Windows computer, make sure your subnet mask allows your computer to see 192.168.17.
User’s Manual AW900-SPEC (Note that the IP address and other parameters for your unit will be different from those in the picture.) 5. Enter the password (default is “password”) and click “Login”. You will then see the main spectrum analyzer window similar to this: 6. The spectrum analyzer controls are quite simple: • The “Scan Now” button initiates a spectrum scan. • The Automatic Scan Interval dropdown allows you to select the time between scans.
AW900-SPEC User’s Manual Sample Spectra Here is an example of a relatively quiet environment. If your scan shows that there is low in-band noise on all channels, you will probably want to leave your AvaLAN radio in auto-frequency selection mode, allowing it the opportunity to change channels as needed should interference arise later.
User’s Manual AW900-SPEC This example was taken on a rooftop with a YAGI directional antenna in a relatively noisy urban environment. The amount of in-band interference was low, except at the high end. Auto-frequency selection would allow the AvaLAN Access Point to choose the channel with the lowest bit error rate. Paging Noise Cellular Noise Cellular Noise Technical support (650) 384-0000 PAGE 7 www.avalanwireless.
AW900-SPEC User’s Manual 900 MHz Channels Channel 0 1 2 3 4 5 6 7 8 9 10 11 12 Center Frequency Auto Mode 903.12500 MHz 905.20833 MHz 907.29167 MHz 909.37500 MHz 911.45833 MHz 913.54167 MHz 915.62500 MHz 917.70833 MHz 919.79167 MHz 921.87500 MHz 923.95833 MHz 926.04167 MHz Limited Warranty This product is warranted to the original purchaser for normal use for a period of 360 days from the date of purchase.
