{"product_id":"tekbox-tbtc3-open-tem-cell-large","title":"TekBox TBTC3 OPEN TEM CELL large","description":"\u003cp\u003eTEM (Transverse Electromagnetic Mode) anechoic chamber developed by Tekbox. Suitable for frequencies up to 2GHz and beyond.\u003c\/p\u003e\n\u003cp\u003eA 50-ohm termination (25W) and a DC component cancellation module are included to protect the spectrum analyzer input.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTEM cell dimensions\u003cbr\u003eLength: 1038 mm\u003cbr\u003eWidth: 501 mm\u003cbr\u003eHeight: 305 mm\u003cbr\u003eSeptum height: 150 mm\u003cbr\u003e \u003cbr\u003eRectangular area under the Septum: 36 cm x 48 cm x 15 cm\u003cbr\u003e \u003cbr\u003eTEM cell connectors: N-female\u003cbr\u003eNominal cell impedance: 50 Ohm\u003cbr\u003eWave impedance: 377 Ohm\u003cbr\u003eMaximum RF input power: 25W (limited by supplied 50 Termination)\u003cbr\u003eInput return loss: S11 up to 700 MHz \u0026lt; -16dB \u003cbr\u003eTransmission loss: up to 730 MHz \u0026lt; 3 dB\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eDC-Block 50V-6GHz-N \u003cbr\u003eConnectors: N-Male\/Female\u003cbr\u003eNominal impedance: 50 Ohm\u003cbr\u003eMax. continuous RF power: 2W\u003cbr\u003eMax. continuous RF voltage: 50V RMS\u003cbr\u003eFrequency: 500kHz to 6 GHz\u003cbr\u003eVSWR: ≤ 1.2\u003cbr\u003e \u003cbr\u003eRF-Termination 50Ω-3GHz-25W-N\u003cbr\u003eConnector: N-Male\u003cbr\u003eNominal impedance: 50 Ohm\u003cbr\u003eMax. continuous RF power: 25W\u003cbr\u003eFrequency: DC to 3 GHz\u003cbr\u003eVSWR: ≤ 1.2\u003cbr\u003eThird order intermodulation: ≤ 120 dBc\u003c\/p\u003e\n\u003cdiv\u003e\u003cstrong\u003eWhat is the usable volume of Tekbox TEM Cells?\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe TBTC1 TEM cell has a septum height of 5cm and a septum width of 13cm. The flat section of the bottom plane has an area of 20cm x 20cm.\u003c\/div\u003e\n\u003cdiv\u003eThe TBTC1 was designed to be a small device, which easily fits on a lab desk and which typically would be used to investigate spurious signals emitted by small to medium size PCB assemblies.\u003c\/div\u003e\n\u003cdiv\u003eIf the purpose is rather checking frequencies than levels of spurious signals, basically any DUT that would physically fit can be inserted into the TEM cell. For safety reason, an insulation distance of 0.5 cm to 1cm to the bottom and 1cm to the septum is recommended. Thus the usable height of a DUT would be limited to 3-4 cm. A consequence of a large DUT would be a degradation of the impedance matching of the TEM cell. Tests with large DUTs in the TBTC1 have shown the S11 to vary between the value at empty state and -10dB. Consequently, a physically large DUT adds to the uncertainty when it comes to estimate equivalent spurious levels that would be measured using antennas in anechoic chamber set up.\u003c\/div\u003e\n\u003cdiv\u003eThe TBTC2 TEM cell has a septum height of 5cm and a septum width of 23cm. The flat section of the bottom plane has an area of 30cm x 30cm. The TBTC2 was dimensioned according to specifications given in Annex E of the CISPR 25 specification. With respect to the maximum DUT size, similar considerations as mentioned above can be applied. However CISPR 25 specifies an allowed working region which is 18cm x 18cm and located as per the screenshot below. Of course, similar considerations can be applied to the TBTC1.\u003c\/div\u003e\n\u003cp\u003e\u003cimg src=\"\/\/cdn.shopify.com\/s\/files\/1\/1618\/2733\/files\/temcellusable_large.png?v=1518535920\" alt=\"TekBox Temcell TBTC\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDocuments:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1618\/2733\/files\/Tekbox_TEM_Cell_Manual.pdf?13448425782086455942\" target=\"_blank\" title=\"TekBox TBTC manual \" rel=\"noopener noreferrer\"\u003eTBTC manual\u003c\/a\u003e\u003cbr\u003e \u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1618\/2733\/files\/Q_A_OpenTEMCells.pdf?13448425782086455942\" target=\"_blank\" title=\"TekBox Q\u0026amp;A Open TEM Cells\" rel=\"noopener noreferrer\"\u003eQ\u0026amp;A Open TEM Cells\u003c\/a\u003e\u003cbr\u003e \u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1618\/2733\/files\/EMC_pre_compliance_testing_4e863381-63bb-4a27-bce1-18500b769716.pdf?13448425782086455942\" title=\"TekBox EMC pre compliance testing guide\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eEMC pre compliance testing guide\u003c\/a\u003e\u003cbr\u003e \u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1618\/2733\/files\/AN_Radiated_Noise_Measurement__TekboxTEMCell.pdf?13448425782086455942\" target=\"_blank\" title=\"TekBox Application Note\" rel=\"noopener noreferrer\"\u003eApplication Note: Radiated Noise Measurement example using Tekbox TEM Cells\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1618\/2733\/files\/TBTC3_S21.xlsx?5776820447463650871\" target=\"_blank\" title=\"TekBox TBTC 3 insertion loss (S21)\" rel=\"noopener noreferrer\"\u003eTBTC 3 insertion loss (S21)\u003c\/a\u003e\u003c\/p\u003e","brand":"Tekbox","offers":[{"title":"Default Title","offer_id":54545375658328,"sku":"TBTC3","price":1110.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0906\/8445\/7304\/files\/TBTC3-750x750.jpg?v=1749146785","url":"https:\/\/www.alldata.it\/products\/tekbox-tbtc3-open-tem-cell-large","provider":"ALLdata","version":"1.0","type":"link"}