Belar FMS-2

The Belar FMS-2 Stereo Modulation Monitor is a precision solid-state device designed to work seamlessly with the Belar Model FMM-2 baseband modulation monitor. Primarily used for stereo FM transmitters, the FMS-2 also serves essential test functions to ensure the proper operation of stereo broadcasting systems.

Key Features:

1. Independent Half-Peak Modulation Meters:
   • Two separate meters for simultaneous monitoring of the left and right channels.
   • Allows for precise measurement and monitoring of stereo modulation.
2. Switchable Front Panel De-emphasis:
   • Facilitates noise measurements by providing the option to switch de-emphasis on the front panel.
   • Enhances versatility for various testing scenarios.
3. Pilot Alarm:
   • Features a front-panel indicator for quick identification of issues related to the pilot signal.
   • Aids in monitoring and maintaining optimal stereo performance.
4. Outputs for Audio Performance Test Measurements:
   • Provides dedicated outputs for conducting audio performance tests, ensuring comprehensive signal analysis.
5. Two Auto-ranging Voltmeters:
   • Integrated voltmeters with LED displays for automatic range measurements ranging from 0 to -80 dB.
   • Enhances test and measurement capabilities for channel spacing, crosstalk, subcarrier, and noise suppression.
6. Stereo Separation Measurement Capability:
   • Achieves over 70 dB of stereo separation at 15 kHz.
   • Demonstrates high fidelity in reproducing stereo signals with minimal interference.
7. High Visibility Backlit Meters:
   • Backlit meters ensure easy readability in various lighting conditions.
   • Enhances user experience during monitoring and measurement tasks.

The FMS-2, when used in conjunction with the FMM-2, offers a comprehensive solution for testing and monitoring stereo FM transmitters. Its advanced features, including independent modulation meters, auto-ranging voltmeters, and stereo separation measurement capabilities, make it a valuable tool for broadcasting professionals, ensuring the accurate performance of stereo broadcasting systems.