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Spectrum measurements – Atec Rohde-Schwarz-CMW500 User Manual

Page 34

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Version 11.00, May 2013

34

Rohde & Schwarz R&S

®

CMW500 Wideband Radio Communication Tester

Frequency error

Measurement range

±80 kHz

Frequency measurement uncertainty

< 20 Hz

18

+ drift of timebase,

see general technical specifications

I/Q origin offset

Inherent I/Q offset

< –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

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

Dynamic range

E-UTRA, f

RF

< 3300 MHz

> 45 dB

E-UTRA, f

RF

> 3300 MHz

> 42 dB

UTRA, f

RF

< 3300 MHz

> 56 dB

UTRA,

f

RF

> 3300 MHz

> 53 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, f

RF

< 3300 MHz

< –35 dBm

RBW → 1 MHz, f

RF

> 3300 MHz

< –32 dBm

RBW → 100 kHz, f

RF

< 3300 MHz

< –40 dBm

RBW → 100 kHz, f

RF

> 3300 MHz

< –37 dBm

RBW → 30 kHz, f

RF

< 3300 MHz

< –45 dBm

RBW → 30 kHz, f

RF

> 3300 MHz

< –42 dBm

18

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.