Nokia N900 Service Manual

Also see for N900: Datasheet User guide User guide User giude User guide

TX testsPrerequisitesConnect complete phone assembly with battery cover to a PC with Phoenix service software using a USB datacable.From the testing toolbar select WLAN Tx Test option shown below. This test can be used to verify TXconfiguration and functionality. The default settings are sufficient for testing the TX operation, althoughother channels and data rates are equally suitable. To start the test, select the Start option button:1 Monitor the WLAN TX spectrum on a Spectrum analyser. (When making a radiated test ensure that otherWLAN devices are not transmitting as these may be detected as well, confusing the result). A typical11MBPS TX spectrum is shown in figure below.2 To finish the test select the Finish option button.The difference between the two readings should be approximately 150mA and measures the transmit currentin 11MBPS, 802.11b mode of operation.RX-51BB TroubleshootingPage 3 –60 COMPANY CONFIDENTIAL Issue 1Copyright © 2009 Nokia. All rights reserved.