GTEM cell - 100 kHz to 20 GHz, 500 W: GTEM EMC 750 - INOX | EMC TEST

The GTEM EMC 750 - INOX is a GTEM cell for electromagnetic compatibility measurements over a frequency range from 100 kHz to 20 GHz. As a Giga-hertz Transversal Electro-Magnetic cell, it operates as a TEM waveguide and enables radiated emission and immunity measurements in a controlled, shielded measurement environment.

With a maximum input power of 500 W, a nominal impedance of 50 Ω and a typical VSWR of 1:1.2, the GTEM EMC 750 - INOX is suitable for demanding EMC, EMI and EMS test setups in laboratory, R&D and qualification environments.

Advantages

• Broadband operation up to 20 GHz for EMC, EMI and EMS testing.
• 500 W maximum input power for immunity test setups using RF power amplifiers.
• Rugged INOX construction for use in demanding test environments.
• Compact GTEM architecture as an alternative to larger facilities for radiated emission and immunity measurements.
• High effective shielding to reduce external electromagnetic interference.
• Configurable feed thrus and filters for RF, fiber optic, data and power interfaces.
• EMCO supports technical users in selecting and integrating suitable EMC, RF and GTEM test solutions.

Key features

• Frequency range: 100 kHz to 20 GHz.
• Max. power input: 500 W.
• Input connector type: N Female.
• Nominal impedance: 50 Ω.
• Typical VSWR: 1:1.2.
• Power line filter: 2 x 230 V AC/DC, 16 A.
• RF coax feed thrus: 1 x SMA Female and 1 x N Female.
• Other feed thrus: 1 x fiber optical cable.
• Installed options: INOX, PLF-16S, FOPT-1, FT-N, FT-SMA.
• Dimensions: 400(L) x 220(W) x 150(H) cm.
• Septum height: 750 mm.
• Door size: 60(W) x 60(H) cm.
• Uniform area size ±3 dB: 30(L) x 30(W) x 25(H) cm.
• EUT max size: 60(L) x 60(W) x 50(H) cm.
• Weight: 400 kg.
• Reference standards: EN 61000-4-3 and EN 61000-4-20.

Typical applications

• EMI and EMS testing of electronic devices and systems.
• Radiation and susceptibility tests in a GTEM test environment.
• Telecommunication applications and testing of communication systems.
• Biomedical and dosimetrical applications.
• Isotropic sensor calibration.
• Receiver sensitivity tests for RF and communication devices.
• Emission testing with a receiver or spectrum analyzer connected to the N Female apex connector.
• Immunity testing with a generator and power amplifier connected to the GTEM input.

Additional information

The GTEM EMC 750 - INOX operates with an electromagnetic field distribution in TEM mode. In this operating mode, the electric and magnetic field components are perpendicular to the propagation direction of the electromagnetic wave.

The technical panel provides shielded access to the internal test volume without contaminating the internal field. The panels are fully configurable to match specific input/output requirements, and two additional empty technical panels are available for future expansion.

The power filter section suppresses disturbances coming from the power supply line and also prevents disturbances generated by the DUT from returning to the mains line. Custom power line filters are available for specific requirements.

The shielded door uses two rows of metal mesh gaskets. When the door is closed, the gasket is mechanically compressed to prevent contamination of the internal field. The door can include a shielded window made of polycarbonate glass incorporating a fine meshed metal foil.

The area opposite the tip of the GTEM cell is fitted with pyramidal RF absorbers. This graphite-loaded absorber material absorbs the RF field and is built from replaceable 3x3 tiled pyramid panels.

Because of its size and weight, the GTEM EMC 750 is shipped disassembled in shock-resistant packaging and assembled on-site by professional personnel.