FM Stereo Demodulator

The FMSD-1 is a high quality VHF FM Stereo demodulator with precision metering on the front panel. The FMSD-1 is used for FM signal monitoring on-site or for testing the audio and modulation quality of
studio encoding systems, (Stereo encoders or transmitter equipment). The unit can be used in conjunction with other test equipment such as the Lindos test set or on its own. The Unit includes an Audio Test Meter section and a Peak Modulation Test Section on the front panel. The features include selection of L/R and Mono / Stereo measurement (displayed audio on the Front panel PPM meters). The audio level can be tested by the selection of the various scales, if a low audio signal has been demodulated. RF input is optional from the rear or from the front of the unit. The RF input is designed for -20dBm signal level or more to obtain the correct input measurements. The front end includes a Bandpass Filter, Mixer and PLL to lock onto the strongest signal. A low RF Input LED on the front panel indicates when the RF input level is below the measurement threshold.

  • Superior audio performance High quality audio O/P (L&R)
  • Built-in Stereo Decoder (<60dB separation)
  • Measurement with MPX input or FM RF signal
  • Headphone socket for audio monitoring
  • De-emphasis measurement selection
  • Modular design
  • Indication of audio Left and Right audio levels

For Product Specifications, please download the PDF Brochure

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