Agilent Technologies 8960 Series 10, Справочное руководство

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S:\Hp8960\E1960A GSM Mobile Test Application\A.04 Release\Reference_Manual\Chapters\meas_pvt_desc.fm
Power versus Time Measurement Description
• Results for multi-measurement PvT measurements include:
1. Average of transmit carrier power measurements (average of averages)
2. Maximum transmit carrier power measured across each burst
3. Minimum transmit carrier power measured across each burst
4. Standard deviation of transmit carrier power measured across each burst
• Statistical PvT measurement results, calculated from measurements taken at each of the active time offset
markers or across a subset of the markers and available only through programming commands, include:
1. Average Power (in dBc) measured at the marker(s) relative to transmit power (carrier power)
2. Maximum power (in dBc) measured at the marker(s) relative to transmit power (carrier power)
3. Minimum power (in dBc) measured at the marker(s) relative to transmit power (carrier power)
4. Standard deviation of power (in dBc) measured at the marker(s) relative to transmit power (carrier
power)
• The measurement integrity indicator is another result available for any completed PvT measurement. This
result provides information about error conditions which occurred and may have affected the accuracy of
the most recently completed measurement. For more information about measurement integrity, refer to
“Integrity Indicator” on page 125 .
• Measurement progress report is a feature that allows the user to periodically see how far
multi-measurement cycle has progressed. When the multi-measurement count is greater than 1, the
progress report will indicate the number of individual sub-measurements that have been completed, n, out
of the total number to be completed, m. “n” is referred to as ICOunt remotely. “m,” the total number of
measurements to be made, is based on the PvT user settings and input signal attributes.
The progress report is displayed on the test set’s screen in an “n of m” format. The number of measurements
completed, n, increases from zero to the total number of measurements which need to be made, m.
Types of Signals Power vs. Time Can Measure
The following list summarizes the input signal attributes and mobile station operating modes for which PvT
can be measured with the test set.
1. Normal GSM TCH burst with mobile station in active cell mode
2. Normal GSM TCH burst with mobile station in test mode (no protocol)
3. RACH burst with valid midamble with mobile station in active cell mode
Power vs. Time Input Signal Requirements
The PvT measurement will complete and meet the PvT measurement accuracy specifications when the signal
meets the following input signal conditions.
1. Input signal level is between
−
15 dBm and +43 dBm.
2. Transmit power is within
±
3 dB of expected input level.
3. Input signal frequency is within
±
10 kHz of expected input frequency.