Atec Rohde-Schwarz-SMA100A - Manual (Page 4)

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1 10 100 1k 10k 100k 1M 10M
6 GHz
3 GHz
1 GHz
100 MHz
10 MHz
Offset frequency/Hz
SS
B
ph
as
e
no
is
e/
dB
c
(1
H
z)
–180
–170
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
–60
–50
–40
1 10 100 1k 10k 100k 1M 10M
Offset frequency/Hz
6 GHz
3 GHz
1 GHz
100 MHz
10 MHz
SS
B
ph
as
e
no
is
e/
dB
c
(1
H
z)
Excellentsignal
quality
The R&S®SMA100A is the ideal solution for measurement
applications requiring high spectral purity, e.g. adjacent-
channel or phase-noise measurements. It is also optimal
for use as a local oscillator or quartz replacement.
Due to an innovative synthesizer concept, the standard
version of the instrument already offers excellent values in
terms of broadband noise, SSB phase noise and nonhar-
monics suppression. The R&S®SMA-B22 enhanced phase
noise performance and FM/φM modulator option even fur-
ther improves SSB phase noise for frequency offsets of up
to approx. 100 kHz as well as nonharmonics suppression.
The R&S®SMA100A is therefore the ideal signal source for
measurement tasks that place exacting requirements on
spectral purity (e.g. A/D and D/A converter tests).
Frequency synthesis is implemented by division of the fun-
damental frequency range (750 MHz to 1500 MHz) down
to 6.6 MHz. In the lower frequency range from 6.6 MHz,
this yields spectral purity on par with that of high-grade
crystal oscillators.
The oven-controlled crystal oscillator (OXCO) built in as
standard provides very high frequency accuracy and
stability. These characteristics are even further improved
with the R&S®SMA-B22 option.
In summary, the R&S®SMA100A’s outstanding signal qual-
ity makes it THE analog state-of-the-art signal generator
for even the most exacting demands.
Measured SSB phase noise with internal reference oscillator
(standard instrument).
Measured SSB phase noise with internal reference oscillator
(with the R&S®SMA-B22 enhanced phase noise performance and
FM/φM modulator option).
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