TEKBOX EMI/EMC Solutions
TBL5016-3 50uH Line Impedance Stabilization Network LISN – CISPR 16
The TBL5016-3 is a Line Impedance Stabilization Network for the measurement of line-conducted interference within the range of 9 kHz to 30MHz, according to the CISPR 16-1-2 standard. The device is designed for testing 3-phase and single-phase, AC-powered equipment with supply voltages up to a maximum 450V/260V and 16A. Conducted noise can be measured on each phase and on the neutral conductor. The TBL5016-3 has separate RF outputs for each phase and neutral and consequently can be coupled with the TBLM1 to split the emissions in its common mode and differential mode components.
The single-phase DUT socket is available in country-specific variants.
• Frequency range: 9 kHz to 30 MHz
• Impedance: 50 Ω ║ (50 µH + 5 Ω)
• Artificial hand: 220 pF + 511 Ω
• Switchable PE: 50 Ω ║ 50 µH
• 250µH pre-filter
• Separate RF outputs for each line and neutral
• Air core inductors
• Line voltage: max. 450V/260V / 50 – 60 Hz, CAT ‖
• Max. current per line and neutral: 16A @ 23°C each
• 3-phase DUT socket: CEE/IEC60309, 3L+N+PE, 16A, female
• Single-phase DUT socket: country specific
• Power connector: CEE/IEC60309, 3L+N+PE, 16A, male
• Measurement connectors: 50 Ω BNC
• Operating Temperature Range: +5°C … + 40°C; 5% to 80% RH
• Safety: Safety Class I, IEC 1010-01
TBMA1
The TBMA1 is a small, lightweight, wideband biconical measurement antenna. With its moderate price, it is ideal for radiated noise EMC pre-compliance testing and for generating defined field strength.
It is characterized from 30 MHz to 1 GHz and has a directional pattern similar to a dipole.
The TBMA1 comes in an aluminum carrying case, together with a “pistol-grip” tripod. A standard ¼” thread makes it easy to connect it to most standard tripods.
The elements are corrosion resistant and constructively locked against rotation. They are fed via a wideband balun with 2 W power handling capability. Furthermore they are protected against build-up of static charge.
• Type: passive biconical
• Frequency range: 30 MHz – 1000MHz
• Nominal impedance: 50 Ω
• Maximum continuous input RF power: 2 W
• Connector: N type female
• Isotropic gain: -42.15 … 1.78 dBi
• Antenna factor: 16.15 … 30.71 dB/m
• Voltage Standing Wave Ratio (VSWR) Max < 2.8
• Length: 430 mm (17 “) tip-to-tip
• Diameter: 160 mm (6.3 “)
• Depth: 163 mm (6.4 “) including housing
• Weight: 0.46 kg (1.01 lbs)
• Tripod Adapter Thread Size: ¼”
TBMR-110M EMI Analyzer
International EMC Standards require various spectrum measurement methods and equipment to ensure that the EUT´s electromagnetic emissions do not exceed the specified limits. The TBMR-110M EMI Analyzer is designed to carry out conducted emission measurements. Its affordability and versatility make it a perfect tool for engineers doing pre-compliance measurements during the development process. Its ease of use also enables importers of electronic items to periodically assess if their suppliers supply consistent quality in terms of EMC compliance, without having to outsource it to test laboratories. High accuracy, versatility and high-speed measurements are only a few of the many features.
• – 162 dBm/Hz noise floor down to 1 kHz
• 7-band hardware pre-selector filter bank
• 30 dBm maximum input power
• CISPR-16, ANSI and MIL-STD compliant detectors
• Peak, Quasi-Peak, Average, CISPR-Average, RMS and CISPR-RMS detectors working in parallel.
• Sweep, STFFT and direct parallel resolution bandwidth setting (-3 dB and -6dB)
• Numerous predefined Standards, ready to load and use
• Pre-measurement with selective Peak measurement
• Direct fast compliant STFFT measurement
• Many pre-defined transducers, antenna factors and various other compensation files
• Many data manipulation, display and documentation features
• Direct control from EMCView or standalone operation
• Quick load of predefined setups
TBST Line of Shielded Tents
The TBST line of shielded tents is designed to suppress interference from ambient noise when carrying out EMC pre-compliance measurements with sizes of 200 cm x 100 cm x 100 cm, 124 cm x 64 cm x 60 cm or 86 cm x 48 cm x 48 cm. The 200 cm and 124 cm tent can accommodate any Tekbox pre-compliance test equipment such as LISNs or TEM-cells. The 86 cm tent will fit the TBTC0/1/2 and all our LISN.
The shielded tents are composed of two layers of conductive fabrics. It is supported by rigid aluminium profiles. The filter panel at the side provides a 240V/10A mains AC filter (optional for the smaller tent), two general purpose 240V/10A AC/DC filters and four coaxial feed through adapters with screw caps. The access opening is sealed with conductive Velcro tape.
• Outer dimensions: 204 cm x 104 cm x 100 cm (104 cm x 101 cm x 204 cm)
• Opening dimensions: 130 cm x 46 cm
• Frame: 20 mm x 20mm extruded aluminium profiles
• Shielding: 2 layers of conductive fabrics
• Suspension: Velcro straps
• Internal AC Socket: pigtail cable with detachable female Schuko + country specific AC cables with C13 connector
• Filter panel: 1 x 240V/10A AC filter; C19 socket 2 x 240V / 10 A AC/DC filters, attached cables with Banana couplers 3 x N-Female coaxial feed-through connectors with screw caps 1 x BNC-Female coaxial feed-through connector with screw caps
• Attenuation: ~50 dB in the range 10 MHz to 6 GHz, see chapter 3
• Weight: 17kg + 3kg (packaging)
Tekbox EMC Compliance Software EMCview
The Tekbox EMC compliance software EMCview for PCs is a user-friendly EMC pre-compliance testing of radiated and conducted emissions. It is a perfect complement for automated testing using our LISNs, RF current probes, measurement antennas and TEM Cells.
A built-in amplitude correction enables correction and conversion coefficients for cables, amplifiers, attenuators, LISNs, TEM cells, antennas, RF current probes, filters and any other component in the signal chain.
There is no need for a time-consuming setup. The SW is ready for measurements straight after installation. All emission related standards and a few automotive manufacturer standards are pre-configured in corresponding project files. The project files take care of all necessary settings to conduct standard compliant measurements. Besides using pre-configured projects, the user can easily create his own projects using a built in editor or any simple text editor.
The graph supports two complete measurement runs such as for example Average / Quasi-Peak or Peak / Quasi Peak and in addition a fast Quasi-Peak scan of critical peaks. Graphs can be saved and overlayed with newer measurements to track and document design modifications.
Furthermore, EMCview together with our GPS receiver can be used to carry out RF-coverage measurements. An export feature creates KML files which links the result to google maps.
Immunity testing is supported with dedicated menus, controlling the tracking generator of the spectrum analyzer.
EMCview PRO, offers real-time measurement support for spectrum analyzers with real-time capability.
Furthermore, EMCview PRO offers advanced conducted immunity testing features for spectrum analyzers with tracking generators. The customer can select between a standard EMCview license or EMCview PRO. Users with a standard EMCview license have the option to upgrade to EMCview Pro.
EMCview Currently Supports the Following Spectrum Analyzers:
• Rigol (DSA and RSA)
• Siglent (SSA/SSA plus/SSA -R and SVA) Siglent EU, Siglent USA
• R&S (FPC and FPH)
• Teledyne Test Tools T3SA series
• BK Precision 2683 series
• ComPower SPA-900TG series
• Multicomp MP700xyz series
• TheEMCShop ESA and RESA series
• UNI-T UTS series
• Keysight models N9321C, N9322C
Radiated Emission Tests
Radiated emission tests are typically done in anechoic chambers using multiple antennas to cover wide frequency ranges. However, these setups are costly and require significant space. Engineers in small to mid-sized companies often rely on experience and best practices, but over 50% of products fail EMC tests on the first try—leading to costly delays and retesting.
To address this, an affordable in-lab solution is needed. TEM cells offer a compact, cost-effective alternative for pre-compliance testing. Tekbox’s open TEM cells support testing up to 2 GHz and beyond. While not as precise as certified labs, they provide clear insights into a product’s radiated emissions, helping engineers assess EMC performance before formal testing.
A TEM cell is a 50Ω stripline device for emissions and immunity testing, consisting of a central conductive strip (septum) and grounded walls. Open TEM cells (TBTC1/2/3) lack sidewalls for easy DUT placement but may pick up background noise—correctable by baseline measurements.
Tekbox’s design suppresses higher-order wave modes using resistive elements, improving bandwidth and performance over standard cells. Each cell comes with a 50Ω/25W termination, DC block, and N-Male to N-Male coaxial cable.
TBTC3 TEM Cell Dimensions:
Length: 1038 mm
Width: 501 mm
Height: 305 mm
Septum height: 150 mm
Rectangular area under the Septum: 36 cm x 48 cm x 15 cm
TEM cell connectors: N-female
Nominal cell impedance: 50 Ohm
Wave impedance: 377 Ohm
Maximum RF input power: 25W (limited by supplied 50 Ohm Termination)
Input return loss: S11 up to 700 MHz < -16dB
Transmission loss: up to 730 MHz < 3 dB