New EMC emission field probes

TESEQ has introduced two new USB/RS232 electric field probes. The PMM EP-600 and EP-601 active broadband field probes benefit from a true spherical symmetrical dipole configuration.

Sampling at a rate of 22S/s to 0.03S/s depending on filter settings, the probes six monopole sensors sample data simultaneously on an X-Y-Z axis. The digital filter can be preset from 2.3 to 28Hz or low pass as required by the specific application requirements.

Their small size and excellent RF characteristics make the PMM field probes ideal for all EMC/EMI applications (chambers and TEM/GTEM cells), biology, materials research and wherever fast and accurate measurements with negligible or minimum interference of the probe to the field under measure are essential.

Extremely lightweight and compact, the EP-600 and EP-601 weigh only 25 grams and are just 50mm wide. The miniaturised, optically-coupled broadband electric field probes also feature a high performance, high reliability 3V, 5mAh Li-Mn battery that can last up to 80 hours before recharging. A full recharge takes only 48 hours.

With a wide frequency range of 10 kHz to 9.25 GHz, Teseq’s new electric field probes are a high performance solution for GTEM systems and EMC radiated immunity testing. The EP-600 has a vast dynamic range of less than 1 V/m to 140 V/m, while the EP-601 ranges from less than 1 V/m to 500 V/m. The field probes also profit from excellent isotropy, typically 0.3 dB at 50 MHz with values to 0.5 dB.

Operating in a temperature range of -10ºC to +50ºC, the PMM field probes can show a temperature reading accurate to 0.1ºC. Probes are connected fibre optically via an optical RS232 converter followed by a USB RS232 converter to the PC.

The supplied PC software provides a display of field, temperature and battery voltage measurements that are accurate to 10 mV. Filters, sampling rate and frequency can also be set with the PC software. The internal data memory stores the serial number, calibration date, calibration factors and firmware version.

In addition, each probe is supplied with a 10 m fibre optic cable; optical RS232 adapter and USB RS232 adapter; PC Utility Win-EP600 to display total field and setup; and a battery charger. Optional accessories include a 20 m fibre optic cable, 40 m fibre optic cable and a programmable switching box with 10 inputs for increased functionality.