Atec Rohde-Schwarz-SMU200A - Manual (Page 36)

Version 08.00, January 2012
36 Rohde & Schwarz R&S ® SMU200A Vector Signal Generator
Fading and noise
Fading simulator (R&S
®
SMU-B14 option) and fading simulator extension
(R&S
®
SMU-B15 option)
The R&S ® SMU-B9/-B10/-B11 or R&S ® SMU-B17 option is required to generate input signals for the fading simulator.
All frequency and time settings are coupled to the internal reference frequency.
with R&S ® SMU-B14 1 Number of signal paths
with R&S ® SMU-B14 and R&S ® SMU-B15 1 or 2
only possible with R&S ® SMU-B14 and R&S ® SMU-B15
input both signal paths split or combined
Signal routing
output split, one signal path only or sum of both
signal paths
Number of fading paths depending on options and signal routing, see table on next page
setting range
0 dB to 50 dB
resolution 0.01 dB
Fading path loss
accuracy < 0.01 dB
setting range 0 ms to 2.56 ms
resolution 10 ns
Fading path delay
with R&S ® SMU-K71 option 0.01 ns
max. 4 per signal path Delay groups
permitted delay differences within one
group < 40 µs
at f = 1 GHz 0 km/h to 1725 km/h Speed range
accuracy < 0.128 %
setting range 0 Hz to 1600 Hz Doppler frequency
accuracy < 0.1 %
standard auto Restart
with R&S ® SMU-B9/-B10/-B11 options
installed
auto, internal from baseband A or B,
external
Total insertion loss automatic or user-definable, with clipping
indicator 0 dB to 18 dB
fading paths in signal path A pairwise with fading paths in signal path B
correlation coefficient
setting range 0 % to 100 %
resolution 5 %
correlation phase
setting range 0° to 360°
Correlation
resolution 1°
Fading profiles
Rayleigh
pseudo-noise interval > 93 h
frequency ratio (–1 to +1) × current Doppler frequency Pure Doppler
resolution 0.01 × current Doppler frequency
combination of Rayleigh and pure Doppler Rician
power ratio –30 dB to +30 dB
standard deviation 0 dB to 12 dB
resolution 1 dB
Lognormal
local constant at f = 1 GHz 12 m to 200 m
path loss 0 dB to 50 dB
phase 0° to 360°
Static, constant phase
resolution 1°