Atec Rohde-Schwarz-CMW500 - Manual (Page 52)

Version 11.00, May 2013
52 Rohde & Schwarz R&S ® CMW500 Wideband Radio Communication Tester
Measured parameters numeric results RMS power (subframe, burst, preamble),
subcarrier power,
crest factor,
error vector magnitude
(all carriers, pilot carriers, data carriers),
unmodulated EVM,
frequency error,
sample clock error,
I/Q DC offset,
I/Q imbalance gain,
I/Q imbalance quadrature,
RSSI,
CINR,
spectrum flatness,
spectrum flatness, neighbor,
occupied bandwidth,
spectrum emission mask,
adjacent channel power
graphical
with the R&S
® CMW-KM700 option
power versus time,
constellation diagram
graphical
with the R&S
® CMW-KM700 and
R&S ® CMW-KM701 options
FFT,
spectral flatness,
spectral flatness, neighbor,
spectrum emission mask,
adjacent channel power,
CCDF,
EVM versus carrier,
EVM versus symbol
Power measurement
Power RMS detector
Level uncertainty see general technical specifications 37
Modulation analysis
Error vector magnitude
Measurement range from inherent EVM up to –12 dB
Inherent EVM 37 WiMAX™ band 1 UL
–15 dBm ≤ input level ≤ +27 dBm < –40 dB, RMS
–35 dBm ≤ input level < –15 dBm < –36 dB, RMS
WiMAX™ band 2 UL
–15 dBm ≤ input level ≤ +27 dBm < –38 dB, RMS
–35 dBm ≤ input level < –15 dBm < –35 dB, RMS
WiMAX™ band 3 UL
–15 dBm ≤ input level ≤ +27 dBm < –38 dB, RMS
–35 dBm ≤ input level < –15 dBm < –35 dB, RMS
WiMAX™ band 1 DL
–18 dBm ≤ input level ≤ +27 dBm < –38 dB, RMS
WiMAX™ band 2 DL
–18 dBm ≤ input level ≤ +27 dBm < –36 dB, RMS
WiMAX™ band 3 DL
–18 dBm ≤ input level ≤ +27 dBm < –36 dB, RMS
Frequency error
Measurement range FFT size 512, BW = 3.5 MHz –27.34 kHz to +27.34 kHz
FFT size 512, BW = 5 MHz –38.28 kHz to +38.28 kHz
FFT size 1024, BW = 7 MHz –27.34 kHz to +27.34 kHz
FFT size 1024, BW = 8.75 MHz –34.18 kHz to +34.18 kHz
FFT size 1024, BW = 10 MHz –38.28 kHz to +38.28 kHz
Frequency measurement uncertainty < 10 Hz + drift of timebase,
see general technical specifications
37
37 Averaging across 100 bursts, UL: BW = 10 MHz, zone length = 18 symbols / 210 slots; DL: BW = 10 MHz, zone length = 34 symbols / 30 subchannels,
channel estimation = payload.