Electrometric introduces Tekbox Low Cost Open GTEM Cell

Radiated Emission Test:

Radiated Immunity Test:

TBGTC1 Datasheet


Low Cost Open GTEM cell for Radiated emission and immunity pre-compliance testing

Electrometric introduces the Tekbox the new TBGTC1 open GTEM-cell that was added to the existing low-cost open TEM-cells for EMC pre-compliance testing. Unlike TEM cells, which have limits at higher frequencies, GTEM cells may operate up to many GHz.
The GTEM cell can be used to examine products both for radiated emissions and radated immunity before and after EMC-related design changes using a Rigol RSA spectrum analyzer with tracking generator, Tekbox modulated power amplifier, and Tekbox EMCview software.

The use of GTEM cells eliminates the need for guesswork.When positioned vertically, the TBGTC1 requires just an area of 78 cm × 52 cm. The EUT can be conveniently placed on a supplied wooden board that rests on the GTEM-cell spacers.



  • Septum Height: 250 mm at the location of the EUT-board
  • Outer dimensions (LxWxH): 1452x780x520 mm
  • Approx Cell Weight: 13 kg.
  • Maximum EUT size (LxWxH): 200x200x150 mm
  • Defined test volume (±3 dB < 3000 MHz, LxWxH): 100 x 100 x 100 mm
  • GTEM cell connectors: N-female
  • Nominal cell impedance: 50 Ohm
  • Frequency range: 0.009 MHz – 6 GHz
  • Wave impedance: 377 Ohm
  • Maximum continuous RF input power: 600W
  • VSWR: 1:1.3 typical, 1:1.9 max.
  • Field uniformity on maximum test volume: up to 3 GHz < ± 6 dB

Optional shielded tent TBST-100/100/200:

  • Construction: two layers of conductive silver fabrics, access opening with conductive Velcro, aluminium frame
  • Ambient noise suppression: up to 50 dB in the range 10 MHz to 6 GHz



More information

Contact us for advise in (pre-)compliant EMC testing or visit the Tekbox page for more information