Agilent Technologies E6385A manual Hl hy Payuy

Performing Tests

TX Test Port Coupling Measurements

NOTE

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•In Full calibration, the Test Software first measures the level at the Base Station TX Antenna Port, then the level at the Base Station TX Test Port. It uses the difference between these levels to determine the loss through the TX Test Port.

If you have connected and configured a PC for automated control of the Base Station, the Test Software will send commands to the MSC during the test. If you wish to use manual Base Station control, you must disable call processing and turn off any transmitters prior to connecting the Test Set to the Base Station TX Antenna Port.

During full calibration, the Test Software will prompt you to connect the Test Set RF IN/OUT port to the Base Station TX Antenna Port using the TX Antenna Port cable. After you have done so, the Test Software will prompt you to connect the Test Set ANT IN port to the Base Station TX Test Port using the TX Test Port cable.

For accurate TX Test port calibration, you must use the correct cables when prompted.

•In Partial calibration, the Test Software will use a Reference Power Level (that you must enter) to determine the coupling factor. This is the level out of the Antenna Interface Frame that feeds the foam jumper to the transmit antenna. The Test Software then measures the level at the Base Station TX Test Port is measured and uses the difference in these levels is used to determine the loss through the TX Test Port.

Unless you are certain that the Reference Power Level that you enter is correct (± 0.5 dB), you should use the full calibration for the most accurate results.

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The following parameters and specifications are used when running this test. See Chapter 5, “Reference,” on page 95 for descriptions of the parameters and specifications.

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•21. TX Antenna Port Cable Loss

•30. TX Test Port Cable Loss

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• None used for this test.

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