Clamp-on Current Probes (Measuring) – for up to 38mm Cable
These probes are designed to inject RF current on cables up to 38mm diameter. The clamp-on feature makes them easy and quick to use. Ideal for EMC compliance tests as specified in ISO and IEC standards.
A current clamp is used as an injection device for the testing RF conducted immunity characteristics of products according to IEC61000-4-6. They can be used for single conductors or cable bundles.
Direct connection to the conductor under test is not necessary, since the probe may be opened for insertion of the conductor into the window of the toroid and then closed again to form a toroidal transformer with the conductor acting as a one-turn primary.
Each probe is calibrated for insertion loss and transfer impedance in a test fixture designed for the particular window size. This fixture provides a signal path with a low Voltage Standing Wave Ratio (VSWR). A typical fixture is the RF9125, used for probes with 32 to 44 mm diameter windows.

- For 38mm diameter cables
- Ideal for EMC compliance measurements as specified in ISO and IEC standards
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Suitable for frequency range 10KHz – 100MHz and 5MHz – 430MHz
Specification
(at 25ºC)
Model | 9217 | 9142 |
Electrical | ||
Bore size | 38mm | 38mm |
Frequency range | 10KHz – 100MHz | 5MHz – 430MHz |
Rated Watts | 100 | 200 |
Insertion loss Under 6dB | —- | 10MHz – 350MHz |
Insertion loss Under 10dB | 200KHz – 5MHz | 5MHz – 430MHz |
Insertion loss Under 15dB | 80KHz – 100MHz | 2.5MHz – 500MHz |
Insertion loss Under 20dB | 50KHz – 100MHz | 1.5MHz – 500MHz |
Mechanical | ||
Dimensions | 115 x 73 x 38mm (excluding connector) | 115 x 73 x 38mm (excluding connector) |
RF Connectors | Type-N | Type-N |
Environmental | ||
Temperature | 0º C to +50º C | 0º C to +50º C |
Operating Humidity | 95% Non-condensing | 95% Non-condensing |