by Brent Raynor
- Connect the 9XTend RF modem to the laptop using a usb cable.
- Connect the 9Xtend power adapter.
- Install the latest X-CTU installer software: http://www.digi.com/support/productdetl.jsp?pid=3157&osvid=0&tp=5&tp2=0
- The 9XTend RF modems have been tested up to 2 miles (3.21868 km) using the standard 2.1 dbi dipole antennas. The RF modems must have line of sight, with no obsticles blocking the path.
- The maximum legal antenna gain is + 6 dbi for a 1 watt transmitter @ 900 MHz. Combining a +8 dbi Yagi antenna with a 10 foot coaxial RF antenna (-2 dbi) will meet this requirement. The diagram below shows the components for the remote location. A good power invertor for the 9XTend will ensure a successful test.
- Select the PC Settings tab.
- Select the com port that is connected to the 9XTend.
- Select the Test/Query tab.
- A Com test/ Query Modem box will appear to confirm communication with the 9XTend modem, that is connected to the laptop.
- Select the Range Test tab.
- Select Loop Back and the Transmit tab.
- Select the Start tab and the stats will appear.
- When satisfied with the results click the Stop tab.
- http://www.digi.com/pdf/ds_xtend.pdf (9XTend brochure)
- http://www.fcc.gov/ (FCC – Federal Communications Commission)
- http://www.fcc.gov/oet/ea/presentations/files/oct05/Unlicensed_Devices_JD.pdf (Unlicensed Devices General Technical Requirements – see page 94)
- http://www.ic.gc.ca/eic/site/ic1.nsf/eng/h_00000.html?OpenDocument (Industry Canada)
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