• Two independent semi-peak modulation meters for simultaneous monitoring of left and right channels
• Front panel switchable de-emphasis for noise measurements
• Pilot alarm with front panel indicator
• Outputs for audio proof-of-performance measurements
• Two auto-ranging voltmeters with LED displays for 0 to -80 dB range measurements
• Stereo separation measurement capability of over 70 dB at 15 kHz
• High visibility rear-illuminated meters

The Belar Model FMS-2 Stereo Modulation Monitor is an all solid state precision stereo monitor designed to operate in conjunction with the Belar model FMM-2 baseband modulation monitor. The FMS-2 is also used for test functions in conjunction with the model FMM-2 to ensure the proper performance of FM stereo transmitters. The test and measurement capability of the FMS-2 is further enhanced by the integration of two independent auto-ranging voltmeters allowing automatic measurement of channel separation and crosstalk, along with sub-carrier suppression and noise. For example, depressing the left and right channel buttons automatically registers the wanted and unwanted channel for instant separation measurements. A front panel hold button can be used to lock the autorange to the displayed range.