CISPR 25 Link
The unique Analog Optical Link for CISPR25 EMC measurements
Low Loss - High Dynamic Range - Low Noise
The RadiLink® from DARE!! Instruments is an analog optical link meant to replace coaxial cable in CISPR 25 emission test set-ups. Coaxial cables have a high loss, certainly at higher frequencies, are hard to handle and influence chamber characteristics. The RadiLink® brings an end to all these problems. It provides gain instead of loss, has an extremely high dynamic range and has a flat response over a wide frequency range. It form factor allows it for use inside the car as CISPR 25 requires. It can be powered by either 12VDC or 230VAC.
CISPR 25 Compliant
The CISPR 25 Optical Link is fully CISPR 25 compliant for emission measurements with antennas in the vehicle and fits in any industry standard car radio slot. The CISPR 25 Optical link has a selectable RF input that can be switched between a 50 Ohm input (9 kHz – 3 GHz) and High Impedant input (9 kHz – 30 MHz).
Low loss (Gain)
Coaxial cables have a loss between 0,1 dB and 1 dB per meter depending on the type of cable and the frequency. Certainly for higher frequencies and long cable lengths used in large chambers this causes great problems. The RadiLink® provides either 0 dB loss or 10 dB gain solving loss problems regular coaxial cables cause.
High Dynamic Range
With regular fibre links the dynamic range is too low for use in EMC applications. The RadiLink® provides an unprecedented 80 dB dynamic link suitable for almost all EMC applications. In fact the high dynamic range in combination with the low loss makes most measurement receivers look much better.
The CarRadio Optical Link has an extremely low noise figure, resulting in a noise floor of less than -20 dBµV @ 9kHz RBW. This enables the engineer to measure peak and quasi peak measurements in the same set-up.
Cover great distances
Unlike coaxial cables fibre cables provide almost no loss. The CarRadio Optical Link has an internal circuit allowing compensation for very long lengths (to 100 m). This makes it the perfect product for laboratories with large distances between the control room and the antenna in the anechoic chamber.
Emission applications have typically low signal strengths. By applying the receiving side to the antenna the maximum signal is converted in to light and transferred to the measurement receiver without loss.
The CarRadio Optical can be delivered with several options; like the Phantom power supply for the 50 Ohm RF input to enable the use of the CarRadio Optical link with active antennae. Beside this it can be equipped with internal battery option for standalone operation of up to 5 hours.
A complete list of resellers can be found here.
The CISPR25 RadiLink brochure in pdf format (English).
For more information on CISPR-25 Link or one of the other products of DARE!! Instruments you can use our contact form.
You can also call or e-mail us. Please see the contact information above.
3447 GX Woerden - The Netherlands
Tel.: +31 348 416 592
Fax.: +31 348 499 732