Anritsu Series MS278XB Code Domain Power Measurement, Code Domain Power Graph Selection Dialog

Measurements Modulation Measurements

Two key measurements for CDMA are the Code Domain Power (CDP) and Code Domain Error (CDE).

Code Domain Power Measurement

Signature can display the Code Domain Power with an optional zoom window or an optional summary table, or both. In each case, the absolute power in each active code is shown.

The graph types are set up using the Graph Type setup dialog shown below by pressing the button for the measurement you want. Each tab also has a check box that is usually in the lower left corner that is an option to the measurement. In the dialog shown, the option is to include a Summary table (showing the Code Domain Power and Error of the active codes) to each of the selected graphs. The buttons immediately switch to the graph type selected. The check boxes are options for CPD overview.

Figure 5-20.Code Domain Power Graph Selection Dialog

One of the key measurements of the WCDMA signal is the power level of the pilot signal (P-CPICH). This is the left most signal on the display in the following figures. The table view makes the power level of any code very easy to see and markers allow for picking out individual codes from the graph.

MS278XB OM 5-43