Atec Rohde-Schwarz-SMU200A - Manual (Page 24)

Version 08.00, January 2012
24 Rohde & Schwarz R&S ® SMU200A Vector Signal Generator
I/Q baseband generator (R&S
®
SMU-B9/-B10/-B11 option) – arbitrary
waveform mode
At least one R&S ® SMU-B13 baseband main module must be installed. One or two R&S ® SMU-B9/-B10/-B11 options can be installed.
Their I/Q signals can be assigned a frequency offset and/or be added in the digital domain with settable level ratio.
output memory
waveform length with R&S ® SMU-B9
option
128 sample to 128 Msample in
one-sample steps
waveform length with R&S ® SMU-B10
option
128 sample to 64 Msample in one-sample
steps
waveform length with R&S ® SMU-B11
option
128 sample to 16 Msample in one-sample
steps
resolution 16 bit
loading time 10 Msample 15 s
Waveform memory
nonvolatile memory hard disk
number of segments max. 1024 segments
changeover modes GUI, remote control, external trigger
extended trigger modes same segment, next segment, next
segment seamless, sequencer
changeover time at 50 MHz clock rate
(external trigger, without clock change) 5 µs (meas.)
seamless changeover output up to end of current segment,
followed by changeover to next segment
sequencer play list length max. 96
Multisegment waveform
sequencer segment repetitions max. 65535
number of carriers max. 32
total RF bandwidth max. 80 MHz
crest factor modes maximize, minimize, off
signal period modes longest file, shortest file, user (max. 1 s)
single carrier gain –80 dB to 0 dB
single carrier start phase 0° to 360°
Multicarrier waveform
single carrier delay 0 s to 1 s
clock rate 400 Hz to 100 MHz
resolution 0.001 Hz
operating mode internal, external
Clock generation
frequency uncertainty (internal) < 5 Ч 10
− 14 Ч clock rate +
uncertainty of reference frequency
The sample rate of the waveform is automatically interpolated to the internal 100 MHz
data rate.
bandwidth
clock rate = 100 MHz (no interpolation),
roll-off to –0.1 dB 40 MHz
Interpolation
clock rate ≤ 100 MHz, drop to −0.1 dB 0.31 × clock rate
The frequency offset can be used to shift the center frequency of the wanted baseband
signal. The restrictions caused by the modulation bandwidth apply.
range
−40 MHz to +40 MHz
resolution 0.01 Hz
Frequency offset
frequency uncertainty < 5 Ч 10 − 10 Ч frequency offset +
reference frequency error