Atec RohdeSchwarz-SMW200A - Manual (Page 25)

Version 01.02, September 2013
Rohde & Schwarz R&S ® SMW200A Vector Signal Generator 25
Frequency offset With the aid of the frequency offset, the center frequency of the wanted baseband
signal can be shifted. The restrictions caused by the modulation bandwidth still apply.
Frequency offset setting range –60 MHz to +60 MHz
with R&S ® SMW-K522 option –80 MHz to +80 MHz
Frequency offset setting resolution 0.01 Hz
Frequency offset error < 7 × 10 –7 Hz + relative deviation of
reference frequency × frequency offset
(nom.)
Triggering A trigger event restarts I/Q generation. The I/Q signal is then synchronous with the
trigger (with a specific timing jitter).
Trigger source event triggered via GUI or remote
command internal
event triggered by other baseband
generator internal (baseband A/B)
event triggered by external trigger signal external
Trigger modes The signal is generated continuously. auto
The signal is generated continuously. A
trigger event causes a restart. retrig
The signal is started only when a trigger
event occurs. Subsequent trigger events
are ignored. armed auto
The signal is started only when a trigger
event occurs. Every subsequent trigger
event causes a restart. armed retrig
The signal is started only when a trigger
event occurs. The signal is generated
once. single
External trigger input selectable from USER 1, 2, 3 on front
panel or T/M/C 1, T/M 2, T/M 3 of
respective baseband generator on rear
panel
Connector type USER 1, 2, 3 on front panel,
T/M/C 1, T/M 2, T/M 3 of respective
baseband generator on rear panel BNC female
Input level 0 V to 3 V (nom.)
Threshold settable between 10 mV and 1.9 V
Input impedance selectable 1 kΩ or 50 Ω (nom.)
Trigger uncertainty ±2.5 ns
External trigger delay
Setting range 0 sample to (2 16 – 1) sample
Setting resolution 5 ns
External trigger inhibit
Setting range 0 sample to (2 26 – 1) sample
Setting resolution 1 sample
External trigger pulse width > 7.5 ns
Marker signals
Number of marker signals
3
Operating modes unchanged, restart, pulse, pattern, ratio
Marker outputs selectable from USER 1, 2, 3 on front
panel or T/M/C 1, T/M 2, T/M 3 of
respective baseband generator on rear
panel
Connector type USER 1, 2, 3 on front panel,
T/M/C 1, T/M 2, T/M 3 of respective
baseband generator on rear panel BNC female
Level LVTTL
Marker delay
Setting range 0 sample to (waveform length – 1) sample
without recalculation 0 sample to 2000 sample
Setting resolution 1 sample
Multisegment waveform mode
Number of segments
1 to 1024
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.)