RF Probes
RF Surface Current Monitoring Probes
Coaxial RF Current Monitoring Probes
RF Pulse Current Monitoring Probes
Current Probe Calibration Fixtures
Bulk Current Injection Probes
RF Current Monitoring Probes
The voltage produced by RF current monitoring probes into a 50-ohm load is proportional to the current flowing through the wires going through the probe aperture. RF current monitoring probes, like LISNs, are used to measure conducted emissions. RF current probes measure the current of conducted emissions, whereas LISNs measure the voltage. Current monitoring probes are not intrusive. It is not necessary to separate the wire harness under test. In addition, RF current monitoring probes typically cover a wider frequency range than LISNs. The EMC standards indicate where LISNs must be used and where current monitoring probes must be used. The primary use is conducted emission measurement on data or control cables. Furthermore, RF current monitoring probes are very versatile tools for the investigation and improvement of EMC issues and for many other applications.
Tekbox RF current monitoring probes cover the frequency range up to 1 GHz. The series with fixed aperture are especially inexpensive. In circumstances, where the cable harness cannot simply be disconnected to feed it through the aperture, Tekbox offers the TBCP2 series snap on probes.
To calculate the corresponding current flowing through the wires passing the probe aperture, subtract the individually documented trans-impedance value in [dB] from the probe’s output voltage.
frequency range
diameter
RF Surface Monitoring Probes
RF Surface current monitoring probes are utilised in applications where RF currents flowing on surfaces such as PC groundplanes or traces, metal planes or wires must be measured.
Coaxial RF Current Monitoring Probes
Coaxial RF current monitoring probes are used to measure RF currents in coaxial cables. They can be used as general purpose coupling devices to measure RF power or as loop antenna transducers.
RF pulse Current Monitoring Probes
RF pulse Current Monitoring Probes are typically used for surge or RF pulse current monitoring applications in the time domain.
Current Probe calibration fixtures
Current Probe Calibration Fixtures are used for calibrating / measuring the transimpedance of current probes. Calibrators are also required for the calibration of immunity test setups with BCI probes.
Bulk Current Injection Probes
Bulk Current Injection Probes are used to inject RF-current into cables of electrical equipment to test the susceptibility against radiated electromagnetic energy. Tekbox BCI-probes can be clamped around wire bundles with up to 27 mm. They are designed to meet the specifcations of the standards IC 61000-4-6 (domestic and industrial products) and ISO 11452-4 (automotive products).
Tekbox supplies suitable wideband power amplifiers to drive the BCI probes:
TBMDA-CDN25 for immunity tests according to IC 61000-4-6
TBMDA-BCI25 for immunity tests according to ISO 11452-4
The calibration fixture TBBCI1-CAL is suitable for both BCI-probe models
