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C
ar Radio Optical Link The unique replacement for Coaxial cable in Automotive EMI Applications Low Loss/Noise ● High Dynamic Range ● Single or Eight Channel The RadiLink® system is typically used to replace coaxial connections in RF measurements. Where coaxial cables introduce losses that increase with frequency and length of the cable, the RadiLink® provides a stable RF-link with little frequency response. Furthermore common mode currents, running through shields of coaxial cables, are eliminated by the use of a fibre system. The Car Radio Link is a special version designed for Automotive emission measurements of car antennae signals. One- or Eight channel Car Radio Link The Car Radio Link system consists of two parts; a RadiLink® plug-in card for the RadiCentre® system that acts as a receive unit. The Car Radio Dummy (remote) unit is mounted in a ruggedized aluminium enclosure. This Car Radio Dummy is available as a single input or eight inputs version. The eight channel version has a build-in 8 channel RF-switch which allows automatic selection of different measurement antennae in the car. Each channel can deliver up to 200mA of bias current to power active antennae. In addition the Car Radio Dummy is equipped with two DC-inputs to measure the switched supply (Radio) and the ignition signal from the car. CISPR 25 Compliant The Car Radio Optical Link is compliant to the CISPR25 standard version 3 paragraph 5 ‘measurement of emissions received by an antenna on the same vehicle’ and has a frequency range of 9 kHz to 3 GHz covering different antenna signals including AM broadcast (150 kHz to 6.2 MHz), FM broadcast (76 MHz to 108 MHz) and mobile services (26 MHz to 2.5 GHz). High Dynamic Range With regular fibre links the dynamic range is often too low for use in CISPR 25 EMI applications. The Car Radio Optical Link provides an unprecedented 80 dB dynamic range. In fact the high dynamic range in combination with the low loss makes most measurement receivers perform much better. Low Noise The Car Radio Optical Link has an extremely low noise figure, resulting in a noise floor of typical -10 dBµV @ 9kHz RBW. This enables the engineer to measure peak and quasi peak measurements in the same set-up.
Dijkstra Advice, Research & EMC Instruments B.V. Vijzelmolenlaan 7 – NL-3447 GX Woerden The Netherlands Tel: +31(0)348 41 65 92 Fax: +31 (0348) 49 97 32 Internet: www.dare.nl E-mail:
[email protected]
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Cover great distances Unlike coaxial cables fibre cables provide almost no loss. The Car Radio 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 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. Options The Car Radio Dummy can be delivered with an optional Li-Po 12VDC battery for standalone operation. The single channel version optionally can be delivered with an N-type connector instead of the SMA-type connector.
Technical Specifications
Car Radio Optical Link Performance Frequency Range, 50 Ohm Frequency Range, high impedant input Frequency response, relative Dynamic Range Harmonic supression Link gain Input 1 dB compression Harmonic surpression
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9 kHz – 3 GHz 9 kHz – 30 MHz (1 channel only) ± 1.5 dB max. (9 kHz – 1 GHz), ± 3 dB max. (1 GHz – 3 GHz), > 80 dB (typical 85 dB) > 40 dBc Typical +10 dB Better than -12 dBm
High impedant input 150kHz – 30MHz 50 Ohm input 150kHz – 30MHz 50 Ohm input 30MHz – 3GHz
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Typical -10 dBµV @ 9kHz RBW Typical -10 dBµV @ 9kHz RBW Typical -10 dBµV @ 120kHz RBW
Input Return loss Output VSWR
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-10 dB typical Better than – 10 dB
Environmental conditions Temperature range Relative humidity Compliance Immunity to radiated fields
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15° to 35° Celsius 10 – 90% (non-condensing) EMC (EN61326); Low voltage (EN61010), LASER safety (IEC60825) 200 V/m (10 kHz – 3 GHz) for remote unit
Power supply Car Radio Dummy Supply voltage (remote unit)
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10 – 16 VDC (under-/overvoltage protect) Optional battery powered (6 hrs)
Mechanical RF input,1 channel CRD RF input, 8 channel CRD RF output, 8 channel CRD RF output, plug-in card Dimensions, 1 channel CRD Dimensions, 8 channel CRD Weight, 1 channel CRD Weight, 8 channel CRD
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SMA female (optional N-type, female) BNC female (8 pieces) BNC female (8 pieces) SMA female xx mm * xx mm * xx mm (LxHxW) 275 mm * 70 mm * 195mm (LxHxW) Approx. xx gram Approx. 1200 gram
Optical Digital LASER (controller side) Digital LASER (remote side) Analog LASER (remote side) Connectors Standard fiber length
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Max. 2 mW, 1310 nm Max. 2 mW, 1550 nm Max. 5 mW, 1310 nm SC/PC (digital data), E2000/APC8 (analog data) 25 meter
RadiLink-UK – 2012 November - version 2.0 Specifications are subjected to changes without notice.
Equivalent input noise:
Models RLK1003A RLK1003C RLK8003C Option 20 Option 30
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RadiLink® plug-in card for RadiCentre® RadiLink® CISPR25 Car Radio Optical Link, 1 ch. RadiLink® CISPR25 Car Radio Optical Link, 8 ch. Battery power N-type input connector (only for RLK1003C)
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More information For more information contact: D.A.R.E!! Instruments at: +31 (0)348 48 11 44 or
[email protected] Internet: www.dare.nl
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