Atec Rohde-Schwarz-CMW500 - Manual (Page 31)

Version 11.00, May 2013
Rohde & Schwarz R&S ® CMW500 Wideband Radio Communication Tester 31
Power measurement
Slot power RMS detector
Level range –50 dBm to +30 dBm, RMS
Level uncertainty see general technical specifications
Modulation analysis
Measured parameters numeric results error vector magnitude (EVM),
magnitude error (ME),
phase error (PE),
frequency error,
I/Q origin offset,
TX power,
peak power,
reference symbol power,
OFDM symbol power
graphical EVM versus OFDMA symbol,
ME versus OFDMA symbol,
PE versus OFDMA symbol,
OFDM symbol power
spectrum flatness,
spectrum ACLR
I/Q constellation
Error vector magnitude (EVM)
Inherent EVM for average ≥ 10 subframes
–20 dBm ≤ input level < +30 dBm,
RMS < 1.5 %, RMS
Frequency error
Measurement range ±80 kHz
Frequency measurement uncertainty < 20 Hz 16 + drift of timebase,
see general technical specifications
Spectrum measurements
Adjacent channel leakage ratio
Filter E-UTRA rectangle 1.08 MHz, 2.7 MHz, 4.5 MHz,
9 MHz, 13.5 MHz, 18 MHz
UTRA 1.28 MHz, RRC, α = 0.22, WCDMA filter
3.84 MHz, RRC, α = 0.22, WCDMA filter
7.68 MHz, RRC, α = 0.22, WCDMA filter
Dynamic range E-UTRA, f
RF
< 3300 MHz > 50 dB
E-UTRA, f
RF
> 3300 MHz > 45 dB
UTRA, f
RF
< 3300 MHz > 52 dB
UTRA, f
RF
> 3300 MHz > 49 dB
Expected nominal power setting for full
dynamic range RF1 COM, RF2 COM see general technical specifications
Spectrum emission mask (SEM)
Frequency span 70 MHz
Noise floor RBW → ≤ 1 MHz, expected nominal
power < 12dBm, f
RF
< 3300 MHz
< –58 dBm
RBW → ≤ 1 MHz, expected nominal
power < 12dBm, f
RF
> 3300 MHz
< –55 dBm
16 For frequency error measurements relative to the downlink signal of the same R&S ® CMW500, the uncertainty is in line with 3GPP TS 36.521-1 V9.3.0.