Over The Air Measurements

OTA Setup

In Over The Air (OTA) mode the instrument is not connected to the node B equipment. The OTA screen displays the six strongest scrambling codes as bar graphs. Displayed underneath the bar graphs are the related scrambling code number, CPICH, Ec/Io, Ec, and pilot dominance in the table format.

In Over The Air measurement the Scrambling Code can be set to Auto to automatically measure and display the six strongest scrambling codes, or Manual, to look for the set scrambling codes.

The OTA measurement screen can be locked by pressing the Code Lock On/Off submenu key. The Display Unit submenu key can be used to display the OTA bar graph by selecting CPICH or Ec/Io. The default display is CPICH. The Sort By submenu key can display the scrambling codes sorted by Power or Code.

Note	Press Reset to activate the OTA measurement in a different location for accurate results.

OTA Procedure

1.	Connect the appropriate antenna to the RF In connector to make OTA measurements.

2.	Set the measurement frequency using one of the methods listed in the User Guide

3.	Press the Measurements main menu key.

4.	Press the Over the Air submenu key to activate the Over The Air measurement.

5.	Press the Over the Air submenu key again to display the OTA submenu key menu.

6.	Press the Scrambling Code submenu key and select Auto to automatically detect the six scrambling codes (Figure: “OTA Measurement Summary”).

7.

To only look for specific scrambling codes, press the Scrambling Code submenu key to highlight Manual, then use the Manual Code submenu key to select the specific code and the On/Off submenu key to turn the selected code on or off. The Code Lock submenu key locks the code, so that the code will not change with each update.

OTA Measurement Summary

 

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	Anritsu Company
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