Agilent Technologies E8285A Acc Prb Pwr, Avg Power, Selects the Access Probe Power measurement

Chapter 4, Description of Fields

Fields

Acc Prb Pwr

This measurement automatically senses when the mobile station access probe power level crosses a threshold (approximately -55 dBm/BW) during registration or call attempts. Although each access probe is measured, only the last access probe during an access attempt is displayed.

This field is accessed by highlighting the currently displayed power measurement (listed below) and selecting Acc Prb Pwr from the list of choices.

This measurement must be cross-calibrated in the same manner as Channel Power measurements. An Uncal annunciator will flash below this field when the Access Probe Power measurement has not been calibrated for the frequency band selected in the RF Chan Std field. See “Calibrating Channel Power Measurements” in the “Calibrating the Test Set” chapter of the Agilent Technologies E8285A Application Guide.

The following list describes the purpose of each Agilent Technologies E8285A power measurement. For more detail, refer to the field description for the power measurement you choose.

•Chan Power

Chan Power (Channel Power) displays lower level RF power by analyzing the downconverted IF at the Test Set’s DSP analyzer’s input. The amplitude range of this measurement is from -50 dBm to +35 dBm. This measurement is limited to a 1.23 MHz bandwidth.

•Avg Power

Avg Power (Average Power) displays the average power measured from all demodulated “on” power control groups transmitted by the mobile station under test. The specified amplitude range of this measurement is from -10 dBm to +40 dBm, and the input frequency range is from 30 MHz to 1000 MHz. This measurement is more accurate than the Chan Power measurement.

•Acc Prb Pwr

Acc Prb Pwr (Access Probe Power) displays access probe power transmitted from the mobile station by automatically triggering a power measurement each time the mobile station registers, performs a mobile station originated call, or performs a mobile station terminated call. (Access Probe Power will also be displayed when SMS (Short Message Service) or Authentication procedures are attempted on the Paging channel.

GPIB Example

“CDMA:TX:POW:MEAS ‘Acc Prb Pwr’“

selects the Access Probe Power measurement.

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