Measuring Digital Average Power

Measuring Digital Average Power

Last updated: June 20, 2006

General Procedure

   
NOTE
Digital Average Power Calibration should be performed if the test set is being used for the first time or the operating environment has changed significantly since the last calibration was performed. See Calibrating the Test Set for details.
   

  1. Connect the mobile station's antenna output to the test set's front panel RF IN/OUT connector and power them on.
  2. Press the blue SHIFT key and then the green Preset key to full reset the test set.
  3. Establish a call with the mobile station (see How Do I Set Up a Call? ).
  4. Initialize the measurement:
    • Press the Measurement selection key.
    • Turn the knob to highlight the Digital Average Power measurement and press the knob.
  5. Press the Digital Average Power Setup ( F1 ) key to access the Digital Average Power Setup menu.
  6. Set the measurement parameters as needed for your test situation by using the knob and DATA ENTRY keys. Press the Close Menu ( F6 ) key to close the Setup window.

       
    NOTE
    For statistical measurement results, highlight the Multi-Measurement Count parameter and press the ON key or enter the number of the measurements to be averaged. The number of averages will default to 10.
       

       
    NOTE
    If single is selected in the Trigger Arm field, press the START SINGLE key to trigger each measurement. If the Trigger Arm is set to Continuous the measurement began executing as soon as you initialize the measurement in step 4.
       

  7. A typical display is shown below.
  8. After finishing the measurements:
    • If desired, turn the measurement off by pressing the Measurement selection key, selecting Digital Average Power , then Close Measurement ( F4 ).

Testing 4.4.5 Maximum RF Output Power

Definition: This test measures the maximum power that the mobile station transmits as measured at the mobile station antenna connector.

The test set does not support the Enhanced Access Channel test. The following procedure is for Access Channel test and assumes that the mobile station supports Band Class 1 (US PCS) and Spreading Rate 1. You should change the settings as specified for other configurations. Unless otherwise stated, leave all parameter settings to the defaults.

  1. Connect the mobile station's antenna output to the test set's front panel RF IN/OUT connector and power them on.
  2. Press the blue SHIFT and then the green Preset key to full reset the test set.
  3. Establish a call with the following parameter settings (you could change some settings as needed).
    • Press CALL SETUP to access Call Parms and Call Control menus.
    • Set Cell Band ( F8 on the Call Parms 1 of 3 ) to US PCS .
    • Set Radio Config ( F11 on the Call Parms 1 of 3 ) to (Fwd1, Rvs1) .
    • Select FCH Service Option Setup ( F12 ) (Call Parms 1 of 3) , set Service Option for Fwd1, Rvs1 to SO2 (Loopback) .
    • Set Traffic Data Rate ( F12 on the Call Parms 2 of 3 ) to Full .
    • Press Originate Call ( F3 ) to initiate a call. Verify that the Connected is in the Active Cell status field.
  4. Set Cell Power (Î or ) to -104 dBm/1.23 MHz ( F7 on the Call Parms 1 of 3 ).
  5. Set the F-Pilot Level to -7.00 dB, and set the F-FCH/Traffic Level to -7.4 dB (see How Do I Change Generator Information? ).
  7. Set Rvs Power Ctrl to All Up bits ( F7 on the Call Parms 2 of 3 menu) to transmit continuous '0' power control bits.
  8. Press the Measurement selection key, select the Digital Average Power measurement.
  9. Press the Digital Average Power Setup ( F1 ) key to access the Digital Average Power Setup menu. Set the measurement parameters as needed, then press the Close Menu ( F6 ) key.
  10. If single is selected in the Trigger Arm field, press the START SINGLE key to trigger each measurement. If the Trigger Arm is set to Continuous , you can skip this step.
  11. Press MEASUREMENT key, a typical display is shown below.
  12. After finishing the measurements:
    • If desired, turn the measurement off by pressing the Measurement selection key, selecting Digital Average Power , then Close Measurement ( F4 ).

Related Topics

Digital Average Power Measurement Description

Programming a Digital Average Power Measurement

Digital Average Power Troubleshooting