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.

Immunity Problem Solution
Expensive ancillaries LaplaCells include field sensors as standard
Power amplifier requirements very efficient design so that RF power requirements are minimal.
Leakage of high power RF Fully screened so RF energy is contained
Field uniformity LaplaCell concept produces better uniformity the GTEM.
Emissions Problem Solution
Strong ambient signals The cell provides an ambient-free volume due to total screening
Test site distortion The cell is fully correlated and traceable to 3m OATS
Lack of ground plane and height scanning Not required!
Lack of space LaplaceCells are very compact

Key Points

  • 30MHz to 6GHz frequency coverage
  • Fully calibrated for emissions and immunity
  • 2 sizes: Lc300:  for EUT up to 30cm x 30cm x 30cm Lc600:  for EUT up to 60cm x 60cm x 60cm (incl. 19" racks up to 13u)
  • Field sensor for immunity testing is included
  • Calibrated in accordance 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.
  • LC300_image_2

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
SPECIFICATION SUMMARY
Equipment type LC300 LC600
EUT size (max) 30cm  x  30cm  x  30cm 60cm  x  60cm  x  60cm
EUT volume  51cm  x  48cm  x  41cm 78cm  x  82cm  x  87cm
Frequency range  30 - 6000 MHz 30 - 6000 MHz
Range switching 2 bands, switched (local & remote switching)
Screen attenuation 60 dB 60 dB
Max RF power in 50 W 50 W
Power for 10 V/m 10 W 20 W
Field @ max RF in for 80% am modulation 26V/m 18V/m
RF input/output connector N type / 50 Ohm VSWR better than 2:1
Auxiliary power 15 V DC (mains power unit supplied with cell, 110 - 240V AC)
Field sensor  Included with cell Calibrated for 0-2.5 V DC output
Emissions calibration Calibrated and correlated to 3m OATS. Full calibration data included (hardcopy & disk)
Door interlock Yes
Filtered I/O Mains feed plus 12 general purpose signals. Ethernet connection for camera and lighting.
Options Camera and lighting Additional I/O filtered feeds (to suit application)
Construction Stainless steel with polypropylene EUT chamber
Mounting Table top Floor, fitted with castors
Total weight 200Kg 400Kg
EUT weight (max)  20Kg 100Kg
Size, L x H x W  2.30m x 1.00m x 0.87m 3.20m x 1.60m x 1.30m
Associated Downloads
Data Sheet – LC300 TEST CELL
Data Sheet – LC600 TEST CELL