Waveform Quality Measurement Troubleshooting

Possible Setup Issues

• You must establish an RTAP (for subtype 0 physical layer) or RETAP (for subtype 2 physical layer) prior to performing the waveform quality + code domain power measurement. Making the measurement in other cases may get incorrect measurement results.
• C.S0033 4.3.8.2 ACK Channel Output Power and test 5 of 4.3.8.3 Data Channel Output Power require that the R-ACK Channel be active. In order for the R-ACK Channel to be active, you must set ACK Channel Bit Fixed Mode Attribute to on, and set AT Directed Packets to a non-zero value.
• During remote operation of this measurement, you should configure the Trigger Arm to Single. See SETup:DOWQuality:CONTinuous or SETup[:ALL]:CONTinuous:OFF|:ON . If single triggering is used during manual operation, press the START SINGLE key to trigger each measurement.

Troubleshooting Techniques

• Check to see if an integrity indicator other than 0 (normal) was returned with a measurement result (see Integrity Indicator ).

Other Considerations

• For subtype 0 physical layer, the waveform quality + code domain measurement always uses the RTAP Rate parameter to demodulate R-Data channel. So when the specified R-Data data rate is different from the actual R-Data data rate, the measurement results are incorrect. For example, the measurement can be accessed in FTAP and Default Packet Application connection where the results look good but should not be used because the actual R-Data date rate does not match the specified value.

  Instead of using the specified R-Data Pkt Size , the subtype 2 waveform quality + code domain measurement uses the actual payload size detected from the R-RRI channel (R-RRI channel carries the payload size and sub-packet identifier information) to demodulate the R-Data channel. The results reflect the current reverse link data signal.

• To avoid over range or under range integrity indicators, correct for system path loss (see Amplitude Offset ).
• If you are manually controlling the test set's receiver, be certain that you have entered the correct frequency and power values for your test setup (see Receiver Control ).
• Waveform Quality + Code Domain Input Signal Requirements
• Calibrating the Waveform Quality + Code Domain Measurement

Related Topics

Waveform Quality + Code Domain Measurement Description