Atec R-S-CMU200 - Manual (Page 16)

16 R&S ® CMU200 Universal Radio Communication Tester Version 09.00, October 2008
Modulation analysis
Level range peak envelope power (PEP)
RF 1 see footnote 4 –6 dBm to +53 dBm
RF 2 see footnote 4 –20 dBm to +39 dBm
RF 4 IN –60 dBm to 0 dBm
Inherent phase error GMSK <0.6°, rms
<2°, peak
Inherent EVM 8PSK ≤1.0 %, rms
Frequency measurement uncertainty ≤10 Hz + drift of timebase,
see base unit specifications
Measurement bandwidth selectable 500 kHz or 600 kHz
Burst power measurement
Reference level for full dynamic range GMSK, RF Attenuation → Low Noise
RF 1 see footnote 4 +10 dBm to +53 dBm
RF 2 see footnote 4 –4 dBm to +39 dBm
RF 4 IN –22 dBm to 0 dBm
Reference level for full dynamic range 8PSK, RF Attenuation → Low Noise
RF 1 see footnote 4 +6 dBm to +49 dBm
RF 2 see footnote 4 –8 dBm to +35 dBm
RF 4 IN –26 dBm to –4 dBm
Filter → 500 kHz, rms
RF Attenuation → Low Noise
GMSK >72 dB
Dynamic range
8PSK >69 dB
result > –40 dB <0.1 dB
Relative measurement uncertainty
–60 dB ≤ result ≤ –40 dB <0.5 dB
Resolution in active part of burst 0.1 dB
Measurement bandwidth selectable 500 kHz or 600 kHz
Spectrum due to modulation
Reference level for full dynamic range GMSK, RF Attenuation → Low Noise
RF 1 +10 dBm to +47 dBm
RF 2 –4 dBm to +33 dBm
RF 4 IN –22 dBm to 0 dBm
Test method relative measurement, averaging
Filter bandwidth 30 kHz resolution filter, 5 poles
Measurement at an offset of ± 100/200/250/400/600/800/1000/1200/
1400/1600/1800 kHz
Dynamic range with offset ≥ 1200 kHz >74 dB