Auswahltabelle für HF-Überwachungsstromzangen (TekBox-Modelle)

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.

Model	TBCP1-200	TBCP1-250	TBCP1-500	TBCP2-250	TBCP2-30K400	TBCP2-500	TBCP2-750	TBCP3-1000	TBCP4-250	TBCP4-500	TBCP4-750
Characterized frequency range	1kHz - 500MHz	1kHz - 300MHz	1kHz - 500MHz	1kHz - 400MHz	10Hz - 500MHz	1kHz - 600MHz	1kHz - 1GHz	1kHz - 1GHz	1kHz - 400MHz	1kHz - 600MHz	1kHz - 1GHz
3dB bandwidth	40kHz - 200MHz	300kHz - 250MHz	400kHz - 500MHz	300kHz - 300MHz	30kHz - 400MHz	1MHz - 500MHz	1.5MHz - 850MHz	3MHz - 1GHz	200kHz - 300MHz	400kHz - 500MHz	1.5MHz - 850MHz
Trans-impedance	17 dBΩ	18 dBΩ	19 dBΩ	13 dBΩ	3 dBΩ	16 dBΩ	20 dBΩ	20 dBΩ	13 dBΩ	16 dBΩ	20 dBΩ
Aperture diameter	25 mm	25 mm	25 mm	32 mm	32 mm	32 mm	32 mm	17 mm	32 mm	32 mm	32 mm
Snap on / hinge	no	no	no	yes	yes	yes	yes	no	no	no	no

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.

Model	TBSCP1-5M300	TBSCP1-10M500
Characterized frequency range	30 kHz - 400 MHz	30 kHz - 600 MHz
Trans-impedance	-7 dBΩ	-5 dBΩ
Footprint	40 x 15 mm	40 x 15 mm

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.

Model	TBCCP1-2K70	TBCCP1-3K100	TBCCP1-400K600
Characterized frequency range	10 kHz - 100 MHz	10 Hz - 100 MHz	10 Hz - 600 MHz
Trans-impedance	0 dBΩ	+5 dBΩ	+23 dBΩ
Application	Transducer for large loop antennas (LLA)	General purpose coupling device	General purpose coupling device

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.

Model	TBPCP1-20100	TBPCP2-3070
Characterized frequency range	1 Hz - 200 MHz	1 Hz - 200 MHz
3 dB frequency range	20 Hz - 100 MHz	30 Hz - 70 MHz
Transfer Impedance (high Z)	0.2 V/A	0.1 V/A
Transfer Impedance (50 Ohm)	0.1 V/A	0.05 V/A
Droop rate	< 10% / ms	< 20% / ms
Rise time	< 5 ns	< 5 ns
Aperture diameter	25 mm	5.5 mm

Current Probe calibration fixtures

Current Probe Calibration Fixtures are used for calibrating and measuring the trans-impedance of current probes. Calibrators are also required for the calibration of immunity test setups with BCI probes.

Model	TBCP1-CAL	TBCP2-CAL	TBCP3-CAL	TBCP4-CAL	TBPCP2-CAL
Application	TBCP1 series TBPCP1-20100	TBCP2 series	TBCP3 series	TBCP4 series	TBPCP2-3070

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.

Model	TBBCI1-200K280	TBBCI1-800K420	TBBCI1-CAL
Frequency range	10 kHz - 300 MHz	10 kHz - 500 MHz	150 kHz - 400 MHz
Coupling loss	8 dB typical	5 dB typical	-
Maximum RF input power	50 W	50 W	500 W
Aperture diameter	27 mm	27 mm	-
Outer dimensions	92 x 76 mm	92 x 76 mm	200 x 150 x 140 mm
Application / Standard	BCI probe for IEC / ISO 61000-6-4	BCI probe for IEC / ISO 11452-4	BCI probe calibrator for IC / ISO 61000-6-4, IEC / ISO 11452-4