Atec R-S-CMU200 - Manual (Page 36)

36 R&S ® CMU200 Universal Radio Communication Tester Version 09.00, October 2008
I/Q imbalance
Inherent I/Q imbalance <–30 dB
Resolution 0.01 dB
Peak code domain error (PCDE)
Inherent PCDE for SF = 4 <–40 dB
Resolution 0.01 dB
I/Q analyzer non-signaling mode
QPSK mode and WCDMA mode graphical display
waveform type
constellation diagram,
vector diagram,
eye diagram I, Q, I/Q
zoom 1, 2, 5, 10, 20
rotation 0°, 45°
Display
measurement length 1 timeslot (2560 chips)
1/4 timeslot (640 chips)
Spectrum measurements
Reference level for full dynamic range
rms +14 dBm to +47 dBm RF 1
peak envelope power 4 (PEP) up to +53 dBm
rms +0 dBm to +33 dBm RF 2
peak envelope power 4 (PEP) up to +39 dBm
rms –18 dBm to 0 dBm RF 4 IN
peak envelope power (PEP) up to 0 dBm
Adjacent channel leakage ratio
(ACLR filter application)
Measurement filter receiver filter in line with standard 3.84 MHz, RRC, α = 0.22
Display bargraphs of rms and peak values,
numeric values rms and peak of current,
average and max. values
Frequency offsets first adjacent channel
second adjacent channel ±5 MHz
±10 MHz
Uncertainty for –33 dBc first adjacent channel level
for –43 dBc second adjacent channel level <0.5 dB
<0.5 dB
Dynamic range
(High Dynamic Mode
→ On)
first adjacent channel
second adjacent channel >54 dB
>64 dB
Resolution 0.1 dB
Measurement length 1 timeslot (2560 chips)
1/2 timeslot (1280 chips)
1/4 timeslot (640 chips)
1/8 timeslot (320 chips)
Adjacent channel leakage ratio
(ACLR FFT/OBW application)
Measurement filter receiver filter in line with standard 3.84 MHz, RRC, α = 0.22
Display continuous spectrum with 25 MHz
bandwidth, numeric values rms and peak
of current, average and max. values
first adjacent channel ±5 MHz Frequency offsets
second adjacent channel ±10 MHz
Resolution bandwidth 20 kHz
3.84 MHz
first adjacent channel >54 dB Dynamic range
(High Dynamic Mode
→ On) second adjacent channel >64 dB
measurement range 1 MHz to 6 MHz
measurement uncertainty <50 kHz
Occupied bandwidth
measurement resolution 20 kHz
Measurement length ≥1 timeslot (2560 chips)
≥1/2 timeslot (1280 chips)
≥1/4 timeslot (640 chips)
≥1/8 timeslot (320 chips)