Atec SML03 User Manual
Data sheet
Version
06.00
August
2004
Signal Generator ¸SML
◆ 9 kHz to 1.1 GHz/2.2 GHz/3.3 GHz
◆ SSB phase noise: −128 dBc (1 Hz)
(at f = 1 GHz, ∆f = 20 kHz)
◆ Setting times <10 ms
◆
High level accuracy (deviation <0.5 dB
at levels >
−
120 dBm)
Economy at its best
◆ High reliability through electronic
attenuator
◆ Digital frequency and level sweep
◆ AM/FM/ϕM
◆ Optional pulse modulator with
integrated pulse generator
◆ Optional stereo coder with analog
and digital audio inputs
◆ Versatile test system consisting of the
¸SML with the ¸SML-B5 and
the Audio Analyzer ¸UPL
◆ 3-year calibration cycle
Unequalled universality
Frequency
◆ 9 kHz to 1.1 GHz/2.2 GHz/3.3 GHz
◆ 0.1 Hz frequency resolution
Level
◆ −140 dBm to +13 dBm
(+19 dBm overrange)
◆
High level accuracy (deviation <0.5 dB
at levels >
◆ Level setting without overshoots
◆ Electronic attenuator
◆ Non-interrupting level setting
−
120 dBm)
Spectral purity
◆ SSB phase noise <−122 dBc (1 Hz),
typ. −128 dBc (1 Hz)
(f = 1 GHz, carrier offset 20 kHz)
◆ Broadband noise <−140 dBc (1 Hz),
typ. −150 dBc (1 Hz)
(f = 1 GHz, carrier offset >2 MHz)
Speed
◆ Setting times <10 ms for frequency
and level
Modulation
◆ AM/FM/ϕM as standard
◆ Simultaneous AM, FM/ϕM and
pulse modulation
◆ Optional pulse modulator with
integrated pulse generator
(¸SML-B3)
Low cost of ownership
◆ 3-year calibration cycle
◆ Low purchase price
◆ High reliability through electronic
attenuator (wear-free)
◆ Service-friendly (continuous selftest,
access to internal test points)
◆ Options OCXO (¸SML-B1),
pulse modulator (¸SML-B3) and
Stereo/RDS Coder (¸SML-B5)
retrofittable
Size
◆ Compact size:
427 mm × 88 mm × 450 mm
◆ Low weight: <8.5 kg
2 Signal Generator ¸SML
Applications ...
Lab and R&D: versatile
High spectral purity
Owing to its low phase noise, the
¸SML is ideally suited to replace LOs.
Versatile modulation modes
The ¸SML in conjunction with the
optional Pulse Modulator ¸SML-B3
handles all analog types of modulation.
AM, FM/ϕM and pulse modulation can
be used simultaneously. TDMA signals or
amplitude variations in the case of FM,
for example, can thus be simulated.
High and precise output level
The ¸SML has plenty of power in
reserve so level loss produced by the test
setup can be easily compensated. Its high
output level makes the ¸SML an
ideal source for driving high-level mixers.
Excellent modulation characteristics
The DC-coupled FM allows the ¸SML
to be used as an accurate VCO.
Example: receiver measurements
◆ Sensitivity measurements require a
signal generator with high level accuracy. This is particularly true at low
output levels. With its sophisticated
calibration technique, the ¸SML
features high level accuracy (<0.5 dB
at levels >−120 dBm).
◆ Squelch measurements call for con-
tinuous level setting. Non-interrupting level variation by typ. 30 dB
makes the ¸SML the ideal choice
for squelch measurements.
◆ Low spurious, low broadband noise
and above all excellent SSB phase
noise are prerequisites for using a
signal generator as an interference
source. With typ. −128 dBc (1 Hz)
SSB phase noise (at f = 1 GHz,
∆f = 20 kHz), spurious suppression of
typ. −76 dBc and broadband noise of
typ. −150 dBc (1 Hz), the ¸SML
easily meets even the most exacting
requirements.
The ¸SML offers all features
required of a state-of-the-art
general-purpose signal generator:
wide frequency range, large variety of modulation functions and
high reliability – at an extremely
attractive price. The fields of application of the ¸SML are virtually unlimited in development,
servicing or production where it is
used as a flexible signal source in
automatic test systems. The
¸SML benefits both from our
long-standing experience in the
field of signal generators and the
latest technology. Its uses are as
versatile as its functionalities.
◆ The mechanical design of the
¸SML ensures excellent RF
shielding of its casing. This is particularly important for measurements on
highly sensitive receivers with built-in
antenna such as pagers.
Level sweep within 25 dB range.
1 GHz
Settling upon frequency change from 100 MHz to 1 GHz.
+100 Hz
–100 Hz
rise time
Frequency deviation in Hz
12 345678910
Time in ms
Signal Generator ¸SML 3
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