Open TEM Cells at Absolute EMC

Open TEM Cells

These Open TEM-cells are well suited for immunity testing of small objects according to European (CE) and automotive standards (SAE J1113-25) or for biological experiments. The advantage of these OTEM cells is that they are open and it is very easy to control the functions of the EUT (Equipment Under Test). The applications are for instance the immunity testing of watches, pagers, telephones or PCB’s.

PARTNER:

WWW.GTEMCELL.COM

MARKETS:

TEST STANDARDS:

IEC/EN 61000-4-20 ,

Required Power

Field Uniformity of Open vs. Closed TEM

Open TEM Data Sheet

SPECIFICATIONS

OPEN TEM CELL

Open TEM-cells are well suited for immunity testing of small objects according to European (CE) and automotive standards (SAE J1113-25) or for biological experiments. The advantage of these O-TEM cells is that they are open and it is very easy to control the functions of the EUT (Equipment Under Test). The applications are for instance the immunity testing of watches, pagers, telephones or PCB’s.In comparison with other closed TEM-cells, the price is low. The field decreases rapidly outside the Open TEM-cells (approx. 33 dB at 1 meter) and it is, therefore, possible to use an Open TEM-cell in ordinary facilities. Another interesting application is the calibration of field probes as the generated field inside the Open TEM-cell is very exact. Open TEM-cells are the most precise structures for field calibrations.

Technical Specifications	O-TEM 250	O-TEM 500	O-TEM 1000	O-TEM 3000
Frequency range	DC - 250 MHz	DC - 500 MHz	DC - 1 GHz	DC - 3 GHz
Height under the plate	30 cm	14.7 cm	7.3 cm	2.5 cm
Dimensions (LxWxH)	250x114x70 cm	107x51x33.5 cm	54x45x16.8 cm	44x18x8 cm
Max. Input power	1.5 KW long term	1 KW long term	750 W long term	400 W long term
The field for a 25W amplifier	105 V/m	215 V/m	480 V/m	1.4 KV/m
Impedance	50 ohm	50 ohm	50 ohm	50 ohm
Wave impedance 377 Ω	377 Ω	377 Ω	377 Ω	377 Ω
Connector type	N	N	N	N or TNC, SMA
VSWR	<1.1	<1.1	<1.2	<1.9
Field precision	± 5 %	± 5 %	± 5 %	± 5 %
Weight	Approx. 55Kg	Approx. 12Kg.	Approx. 3,5Kg.	Approx. 3Kg.
Options	Signal and power supply filter, Dummy Load.
* Can be equipped with a test setup for IC or PCB acc. to SAE J1752-3