BTS transmitter output Measurement BSM ( base station manager ) and spectrum analyzer

BTS transmitter output Measurement. The objective of this test is to verify the bts transmitter power by each FA. If this test is finished in the bts installation step by the bts examination team , this test may be omitted by agreement with both parties. Otherwise , the sample BTSs will be selected to verify the BTS transmit power. The number of all BTSs, all sector , and all FA shall be mutually agreed with both parties.
Required tools and devices

BSM ( base station manager ) and a spectrum analyzer are required for measuring RF transmitter power in BTS. BSM shall be used in inputtung several parametters shall be connected through RF cable, and used to measure RF transmitter power. Another FA should be turned off during this test. test diagram for measuring RF transmitter power in BTS is described below.

Measurement method

• verify the dB_index parameter of overhead channel using BSM pilot of overhead channel is generally 15 %.
• setup ocns ( orthogonal channel noise simulator ) as follows.
• measure the BTS transmitter power using the spectrum analyser
• verify if the measured value meets the standard
• when the measured value is different from the standard, adjust trasmitter power gain in TRXA so that it can meet the standard.
• measure this test in the order of alpha, beta, and gamma , and repeat the test for each FA.