How Do I Make a IQ Tuning Measurement?

NOTE

This measurement can only be performed with your mobile in test mode and transmitting either all ones or all zeros.

1. Press the Measurement selection key.
2. Select the IQ Tuning measurement.
3. Press the More key (bottom right) to obtain the Call Parms (3 of 4) screen.
4. Press the Receiver Control ( F7 ) key and select Manual .
5. Press the ( F11 ) key and set the expected power level from your mobile.
6. Press the IQ Tuning Setup ( F1 ) key.
7. Set the measurement parameters as needed for your measurement, including:
   Multi-Measurement Count = 50
Trigger Source = Immediate
8. Switch on your mobile and set it to transmit a series of all zeros.
   

   The results are displayed on the IQ Tuning screen. Notice that when the mobile is transmitting a series of all zeros the carrier offset is at +67.708 kHz.

9. Change the settings on the mobile to transmit a series of all ones.
   

   The results are displayed on the IQ Tuning screen. Notice that when the mobile is transmitting a series of all ones the carrier offset is at -67.708 kHz.

10. Press the Graph ( F2 ) key to access the IQ Tuning bar graph.
    

    A typical IQ Tuning graph is shown above. On the display, the bar representing each offset and the carrier frequency (Fc) is shown in yellow.

    If you require details on how to navigate through the Output RF Spectrum graph menus, see IQ Tuning Graph Menus .

IQ Tuning Graph Menus

Related Topics

I/Q Tuning Measurement Description

Programming an I/Q Tuning Measurement

Test Adherence to Standards