Atec Rohde-Schwarz-CMW500 - Manual (Page 25)

Version 11.00, May 2013
Rohde & Schwarz R&S ® CMW500 Wideband Radio Communication Tester 25
Analysis modes with the R&S ® CMW-KM400 option QPSK, WCDMA
with the R&S ® CMW-KM400 and
R&S ® CMW-KM401 options
WCDMA + HSDPA, WCDMA + HSUPA,
WCDMA + HSPA
with the R&S ® CMW-KM400 and
R&S ® CMW-KM401 and
R&S ® CMW-KM403 options
WCDMA + HSPA+
Measured parameters numeric results and standard deviation error vector magnitude (EVM),
magnitude error (ME),
phase error (PE),
frequency error,
I/Q origin offset,
I/Q imbalance,
UE power,
power steps,
phase discontinuity,
CDP,
CDE
graphical EVM versus time, EVM versus chip,
ME versus time, ME versus chip,
PE versus time, PE versus chip,
FE versus time,
UE versus time,
PS versus slot,
PD versus slot,
CDP versus slot,
CDE versus slot,
CD monitor
Error vector magnitude (EVM)
Measurement range up to 25 %, RMS
Inherent EVM < 2.5 %, RMS
Measurement length half-slot, 1 slot, multislot (1 to 120)
Frequency error
Measurement range ±3 kHz
Frequency measurement uncertainty
< 20 Hz + drift of timebase,
see general technical specifications
I/Q origin offset
Inherent I/Q offset for average ≥ 10 measurements < –55 dB
I/Q imbalance
Inherent I/Q imbalance < –50 dB
Spectrum measurements
Adjacent channel leakage ratio RMS detector
Filter 3.84 MHz, RRC, α = 0.22, WCDMA filter
Dynamic range first adjacent channel at ±5 MHz > 54 dB
second adjacent channel at ±10 MHz > 57 dB
Expected nominal power setting for full
dynamic range RF1 COM, RF2 COM –4 dBm to +42 dBm 13
Uncertainty for –33 dBc first adjacent channel level < 0.5 dB
for –43 dBc second adjacent channel level < 0.5 dB
Measurement length 1 slot (2560 chip)
Power meter
UE power measurement RMS detector
Filter bandpass, 6.3 MHz, RRC, α = 0.22
Level range –55 dBm to +42 dBm 13
Level uncertainty see general technical specifications
Measurement length half-slot, 1 slot
13 The maximum permissible continuous power is +34 dBm due to thermal limits.