Agilent Technologies E8285A Carrier Ref, Queries the carrier feedthrough measurement result

Chapter 4, Description of Fields

Fields

Carrier

This field is displayed when Carrier is selected from the list of choices available when the unnamed field displaying one of the following choices is displayed:

•phase error measurement

•carrier feedthrough measurement

GPIB Example

“DISP CTXT;MEASure:CDManalyzer:CARrier:FEEDthrough?“

queries the carrier feedthrough measurement result.

Operating Considerations

These measurements, along with rho, frequency error, amplitude error, and time offset are made by DSP analysis techniques. The Meas Cntl field triggers these measurements.

See Also

Meas Cntl field description, on page 295

Phs Error field description, on page 332

Screens Where Field is Present

CDMA CELLULAR MOBILE TRANSMITER TEST

Carrier Ref

Use the carrier reference field to indicate whether the carrier (Tune Freq) being measured should be unmodulated or modulated when making the ACP reference measurement. (For more information, refer to "How the Test Set Measures Adjacent Channel Power (ACP)" on page 83.)

Operating Considerations

•FM transmitters can be measured with the carrier modulated or unmodulated.

•For AM transmitters, the carrier must be measured while unmodulated. AFGen1 and the AUDIO OUT port must be used as the modulation source whenever Unmod is selected.

Screens Where Field is Present

ADJACENT CHANNEL POWER

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