Laplace Instruments

Products for EMC emission measurements from 9 kHz - 3 GHz

SA 3000

SA1002 / SA3000 EMC Measurement Receivers

The SA3000 is a powerful, fully featured, EMC analyser. It will measure both conducted and radiated emissions according to the international EMC standards. It enables the user to assess the EMC compliance of products quickly and with good integrity. The analyser is controlled via a USB link from any standard PC using the software included with the analyser. This provides a user interface which is simple and intuitive to use.

  • 9KHz - 3GHz frequency span.
  • Meets all EMC standards for measurements.
  • Optional Band A filter (200Hz RBW).
  • USB interface to any standard PC.
  • Full set of detectors (Pk, QP and Ave).
  • Simultaneous measurement of all three detectors.
  • Limit lines shown on results plots for simple compliance assessment.
  • Up to 20 marked points with bargraph and tabular presentation.

 


RF910 & RF915

RF910 / RF915 Pre Selectors

These Pre-Selectors are high specification, switched band filters which track the scanning of the EMC Analyser. Control is via USB link from the Laplace EMCEngineer software supplied with SA1002 and SA3000 analysers. Installation and operation is completely automatic, and the filters will synchronise with the analyser scan without any operator intervention. A front panel switch allows manual operation if required.

Two models are available:

RF910 Band B, 150KHz - 30MHz. 8 filter bands

RF915 Band A & B, 9KHz - 30MHz. 13 filter bands

Pass band attenuation is just 4dB and out-of-band rejection is nominally 40dB.

Have a look at the whitepaper section for more details on the importance of pre-selection during an emissions test.

 


 

LISN16A1P

LISN's

All commercial LISN's include an artificial hand connection and a transient limiter. This adds a 30dB insertion loss. A 30dB pre-amplifier is included which can be connected in the RF output feed to return the insertion loss to 0dB.

All bar the heavy current LISNs are constructed in a flanged aluminium enclosure that can be bolted directly down to a ground plane (as required by standards). The underside of the enclosure is left unpainted to ensure good conductivity with the plane. The 16A and military/automotive LISNs have an RF output for each line, thus allowing parallel measurements of the emissions. This facilitates measurement of common mode and differential mode components of the emissions if required.

 


 

RF200

Antennas

Antennas are normally required for the measurement of radiated emissions. We offer a wide range of antennas to suit the various requirements.

These include standard broadband antennas, like the RF200

 

miniature antennas

Large Loop Antennas

and many more options for both emission measurements and immunity testing, for frequencies up to 18 GHz from suppliers as Teseq and Schwarzbeck

 


 

Lc300/2

 

 

 

 

Cell filter & I/O compartment

Test Cells - LaplaCell

LaplaCells provide a facility for the rapid and efficient testing of the EMC compliance of products. These cells offer a calibrated and screened environment in which radiated emissions can be measured and immunity to RF radiation can be tested. They exceed the requirements of IEC61000-4-20, thus affording compliant testing to IEC61000-4-3 and pre-compliance testing for radiated emission testing.

The Cells are a modified form of GTEM cell, using a balanced dual septum design which maximises EUT volume for a given external size of cell, and dramatically improves field linearity. The EUT volume is fully lined in structural polycarbonate capable of supporting heavy products and access is via a large, full height door at the end of the cell. Adjacent to the door is the I/O filter compartment which can be customised to suit the users requirements. USB, RS232, Parallel, Ethernet, co-ax and other product specific filters can be added at time of ordering.

Key Points

  • 30MHz to 3GHz frequency coverage
  • Fully calibrated for emissions and immunity
  • 2 sizes: 
    • Lc300/2:  for EUT up to 30cm cube
    • Lc600:  for EUT up to 60cm cube (incl. 19" racks up to 13u)
  • Field sensor for immunity testing is included
  • Complies with IEC61000-4-20
  • Excellent field uniformity
  • Compact size
  • Ready for immediate use on delivery
  • Standard filtered I/O includes mains feed, fibre optic access and 12 individual connections

Features

LaplaCells are specifically intended for use by manufacturers so that they can test their own products efficiently . The LaplaCell design is an advance on the well known GTEM concept. However, the use of a dual septum provides:

  • better field uniformity
  • compact external size
  • balanced septum fed with impedance conversion network to better match OATS conditions
  • Built-in field sensor
  • Camera and lighting options

 

The basic EMC test systems can be expanded with various accesories like current probes, pre-amplifiers, reference sources and more. Check our Accesories section for more detailed information.

Perhaps not all the terms, tests and instruments are clear for you at the moment. For more detailed background information on various EMC topics we offer several whitepapers in our Whitepaper section.

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Request Documentation

 

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