Anritsu 3GPP, Руководство по измерениям

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2-7 Measurement Results GSM/GPRS/EDGE Signal Analyzer
2-8 PN: 10580-00234 Rev. Y 3GPP MG
2-7 Measurement Results
Average Burst Power
The average burst power over 10 measured burst power values. This average is restarted
when a new frequency is selected.
Channel Power
Channel power measures the average power in a GSM/EDGE frame in the frequency
specified. Out of specification power indicates system faults. Channel power is expressed
in dBm.
Freq Error
The difference between the received frequency and the specified frequency is the frequency
error. This number is only as accurate as the frequency reference used, and is typically only
useful with a good external frequency reference or GPS. Frequency error is displayed in
both Hz and ppm.
Occ BW
The occupied bandwidth is calculated as the bandwidth containing 99% of the transmitted
power.
Burst Power
Burst power is the average power over the useful part of the first active burst GSM/EDGE
slot. A GSM/EDGE signal has eight time slots in a frame.
BSIC (NCC, BCC)
This is the Base Station Identity Code broadcasted on GSM systems. The code consists of a
Network Color Code (NCC) and a Base Station Color Code (BCC).
Phase Err RMS (deg)
The RMS phase error measured in degrees between the received signal and an ideal
reconstructed reference signal of the first active slot.
Phase Err Pk (deg)
The peak phase error measured in degrees between the received signal and an ideal
reconstructed reference signal of the first active slot.
EVM (rms)
The RMS (%) of all the error vectors between the ideal reconstructed reference symbol points
and the received symbol points divided by the RMS value of the signal present in the first
active slot. This measurement is performed for 8PSK modulated signals (EDGE) only.
EVM (pk)
The peak (%) of all the error vectors between the ideal reconstructed reference symbol points
and the received symbol points divided by the RMS value of the signal present in the first
active slot. This measurement is performed for 8PSK modulated signals (EDGE) only.
Origin Offset (dB)
Origin Offset is the carrier leakage component of the measured signal in dB and this
measurement is applicable to EDGE signal only.