Rohde & Schwarz - EMI test receiver for disturbance measurements from 9kHz to 7GHz
Published Sep 7 2009 [Printer friendly version] [Email article to a friend] [More Test & Measurement articles]
A new CISPR 16-1-1 compliant EMI test receiver, for the frequency range from
9kHz to 7GHz, has been introduced by EMC T&M specialist Rohde & Schwarz.
The R&S ESCI7 already meets the requirements of the current edition of the
CISPR 22/EN 55022 standard for information technology equipment, which will
be valid from 2010. Starting in October 2010, radiated disturbance
measurements up to 6GHz will be mandatory for IT equipment in the European
Union. The R&S ESCI7 enables test houses to adapt their services to these
future requirements and helps manufacturers to avoid costly and
time-consuming redevelopment effort. Like all EMI test receivers from Rohde
& Schwarz, the R&S ESCI7 features an integrated spectrum analyzer.
The new EMI test receiver is a future-safe solution for all manufacturers
who wish to sell products such as computers, modems or printers and the
necessary components in the EU. They can detect and analyze radiated
disturbance up to 7GHz and check whether their products comply with the
future limit values. Thanks to the integrated spectrum analyzer, the R&S
ESCI7 can perform a large number of the standard measurements typically
encountered in RF development labs. The receiver can measure phase noise,
occupied bandwidth and adjacent channel power, for example, or determine the
third-order intercept point.
The R&S ESCI7 is 'unique' in its class because of its low displayed average
noise level (typ. -153dBm at 1GHz and 10Hz bandwidth) and its wide dynamic
range (1dB compression point of +5dBm). The test receiver offers the
sensitivity required for high-precision EMC measurements using low limit
values, as defined by the CISPR 22/EN 55022 standard for the frequency range
from 1GHz to 6GHz. This capability benefits users by reducing the necessary
investment in external preamplifiers, low-loss cables or highly sensitive
antennas.
The mixed-mode display of the R&S ESCI7 simultaneously shows the RF input
signal in the spectrum around the receive frequency, the numeric measurement
values and the level bargraph. This display mode gives users a better
overview of the spectrum that surrounds disturbance signals and enables them
to identify disturbance faster. It also allows more accurate tuning of the
EMI test receiver to the local disturbance maximum, says the company.
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