201303.pdf 36567KB Mar 22 2013 09:11:22 PM

productroundup
TesT & MeasureMenT
Tektronix portable spectrum analyzers find
elusive signals
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With built-in mapping and signal classification, the H500 and SA2500
handheld spectrum analyzers scan, classify, and locate signals missed by
conventional swept analysis. DPX waveform image-processing technology provides
a live RF view of the spectrum to allow regulators to efficiently manage and monitor
spectrum in the field and find signals and interferers. The field-portable analyzers
offer frequency coverage from 10 kHz to 6.2 GHz, a real-time bandwidth of 20
MHz, and DANL (displayed average noise level) of −163 dBm. Fully ruggedized to
withstand shock and moisture, the H500 and SA2500 weigh just over 12 lbs and
employ a hot-swap power system. Battery life is rated for 5 hours of continuous
spectrum scanning. The SA2500 costs $24,600; the H500 sells for $43,400.
Tektronix, www.tek.com
Spectrum analyzer from Agilent suits
budget environments
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The N9322C basic spectrum analyzer
covers a frequency range of
9 kHz to 7 GHz with 1-Hz resolution. It
also has a typical DANL (displayed
average noise level) of −152 dBm for
viewing low-level signals, and its ±0.1-
ppm annual aging rate reduces frequency
drift. The channel scanner measures
up to 20 channels simultaneously, while
the 7-GHz tracking generator with
built-in VSWR bridge supports generalpurpose
transmission and reflection
measurements. Supplied with the
N9322C is Agilent’s PowerSuite, which
enables one-button measurement of
channel power, occupied bandwidth,
adjacent-channel power, and spectrum
emission mask. Prices for the N9322C
start at $11,413. The tracking-generator
option starts at $2484.
Agilent Technologies,
www.agilent.com
TECA liquid-cooled
benchtop system cools
down to −70°C
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With a footprint of just 11.2×15.1
in., the LHP-1200CAS liquidcooled
cold-plate system is a compact
bench unit that provides direct contact
cooling down to −70°C when outfitted
with an optional cascade assembly. It
can be used to cool components, materials,
chemicals, and samples. The thermoelectric
cold-plate system operates
with any of TECA’s three cascade accessories
to achieve low-temperature cooling
or without the cascade
attachment to
retain a larger cooling
surface. Other features
include a programmable
temperature controller;
RS-232 communications
interface; and software
for programming, charting,
and data acquisition. Pricing
for the LHP-1200CAS starts at $5348.
TECA, www.thermoelectric.com
R&S step attenuators
span dc to 67 GHz
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The RSC family of switchable,
mechanical step attenuators covers
frequencies from dc to 67 GHz and
includes a precision model with 0.1-dB
step size for enhanced accuracy and stability.
The family includes a base unit
with or without an internal step attenuator
and a choice of two external step
attenuators. Internal step attenuators
come in three versions. The standard
version has an attenuation range of 0 to
139 dB with a 1-dB step size up to 6
GHz. The other two units offer an
attenuation range of 0 to 139.9 dB with
a 0.1-dB step size from dc to 6 GHz and
0 to 115 dB with a 5-dB step size from
dc to 18 GHz. External step attenuators
provide an attenuation range of 0 to 75
dB with a 5-dB step size from dc to 40
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March 2013 | EDN 63