Atec Rohde-Schwarz-CMW500 - Manual (Page 29)

Version 11.00, May 2013
Rohde & Schwarz R&S ® CMW500 Wideband Radio Communication Tester 29
Trigger
Trigger source BASE: external TRIG A,
BASE: external TRIG B,
GPRF: BB generator,
LTE: free run (fast sync),
LTE: IF power
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,
resource block power (RB power)
graphical EVM versus SC-FDMA symbol,
ME versus SC-FDMA symbol,
PE versus SC-FDMA symbol,
EVM versus subcarrier,
inband emissions,
spectrum flatness,
I/Q constellation
Error vector magnitude (EVM)
Inherent EVM allocated resource blocks ≤ 15
–34 dBm ≤ input level < +30 dBm,
RMS < 1 %, RMS
–38 dBm ≤ input level < –34 dBm, RMS < 1.5 %, RMS
allocated resource blocks ≤ 50
–30 dBm ≤ input level ≤ +30 dBm, RMS < 1 %, RMS
–38 dBm ≤ input level < –30 dBm, RMS < 2 %, RMS
allocated resource blocks ≤ 100
–28 dBm ≤ input level ≤ +30 dBm, RMS < 1 %, RMS
–38 dBm ≤ input level < –28 dBm, RMS < 2.5 %, RMS
Frequency error
Measurement range ±80 kHz
Frequency measurement uncertainty < 20 Hz 15 + drift of timebase,
see general technical specifications
I/Q origin offset
Inherent I/Q offset for average ≥ 10 measurements < –50 dB
Inband emissions
Dynamic range allocated resource blocks ≤ 50,
f
RF
< 3300 MHz
> 50 dB
allocated resource blocks ≤ 50,
f
RF
> 3300 MHz
> 47 dB
Expected nominal power setting for full
dynamic range RF1 COM, RF2 COM see general technical specifications
Equalizer spectrum flatness allocated resource blocks ≤ 50
Level uncertainty < 0.5 dB
15 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.