Belar FMCS-1 All-In-One FM Modulation Monitor

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Belar FMCS-1

Summary

The FMCS-1 provides a complete solution for the Analog portions of the FM signal.

The FMCS-1 combines the features and functions of an RF Amplifier, FM Demod, Stereo Demod, RDS Decoder, Two SCA Decoders, and FFT Spectrum Analyzer in one product.

Using state of the art DSP techniques all of the FMCS-1 processing takes place in the digital domain, this results in FM analog performance that was previously not possible.

Features

Features

  • Frequency Agile RF input
  • AM & Sync AM Noise measurements
  • HD RF carrier rejections filters to improve analog readings in the presence of
    HD carriers.
  • FM Demodulation with 100 dB 75 µsec SNR
  • Variable Bandwidth Composite Filtering
  • Stereo Demodulation with 100 dB L/R Separations
  • Full metering of Analog Peak and RMS values
  • RDS Injection/Phase and Full Data decoding
  • Two SCA Decoders
  • RF, Composite, and Audio FFT Spectrum Analysis
  • RJ-45 Ethernet Interface with remote PC software

Technical Specification

Technical Specification

RF Inputs

Frequency Range:
87.3 to 108.1 MHz, Frequency Agile

100 kHz Increments

High Level Input:
400 mVrms to 3.5 Vrms , 50Ω, BNC Connector

Antenna Input:
100 µV sensitivity, 75Ω, F-Type Connector

500 mVrms Maximum

FM Demod

Frequency Response:
±0.01 dB, 10 Hz to 100 kHz

SNR:
100 dB, 75 µs de-emphasis

Distortion:
0.001%, 75 µs de-emphasis

Stereo Decoder

Frequency Response (L and R):
±0.1 dB, 10 Hz to 15 kHz

SNR (Stereo):
90 dB, 75 µs de-emphasis

Distortion:
0.001%, 10 Hz to 15 kHz, 75 µs de-emphasis

Separation

L to R, R to L :
100 dB, 10 Hz to 15 kHz

Crosstalk

L+R to L!R:
100 dB min

L!R to L+R :
100 dB min

SCA to L+R:
100 dB min

SCA to L!R:
100 dB min

FFT Spectrum Analysis (RF, Composite, Audio)

Display Modes:
Realtime, Peak Hold, Average, Infinite Hold

Amplitude

Number of Points:
181

Scale:
+100.0 to !150.0 dB adjustable

Resolution:
0.1 dB

Frequency

Number of Points:
501

Resolution BW

RF:
25, 50, 100, 250, 500, 1000, 1500, 2000, 2500 Hz

Composit:
5, 10, 25, 50, 125, 250 Hz

Audio:
1, 2, 5, 10, 25, 50 Hz

Metering

Modulation (Peak, Ave, Min)

Total, L, R, L+R, L!R:
0 to 150%, 0.1% resolution

Pilo:
0 to 15.0%, 0.1% resolution

RMS

Total, L, R, L+R, L!R:
+3.0 to !120.0 dB, 0.1 dB resolution

Flat & 50 µs or 75 µs

AM Noise, Sync AM Noise:
0.0 to -100.0 dB, 0.1 dB resolution

Separation:
0.0 to !120.0 dB, 0.1 dB

Crosstalk:
0.0 to !120.0 dB, 0.1 dB resolution

Indicators

Total Peak Modulation ! L+R Presence ! RF Presence ! Pilot Presence ! RDS Sync &

Presence ! SCA #1 Peak and Presence ! SCA #2 Peak and Presence ! AM Noise Limit ! SYNC

AM Noise Limit

Composite Outputs

Analog (2 buffered):
1.5 Vrms @ 100%, 75Ω unbalanced

BNC Connector

Digital (2 buffered):
LVDS, 100Ω, RJ-45 Connector

Audio Outputs

Analog Outputs (6 assignable):
+10 dBm, 600Ω balanced

XLR Connector

Analog Outputs (2 assignable):
5 Vrms, 75Ω unbalanced

BNC Connector

AES-3ID (8 assignable):
1.0 Vpk-pk, 75Ω, BNC Connector

Headphone (assignable):
1/4″ Phone Jack

Alarm Outputs

Relays (4 assignable):
FORM C, 15-pin Female D-Sub Connector

Computer Interface

USB:
Port

Ethernet 10/100 Base -T :
RJ-45 Jack

Dimensions:
19″x3.5″x14.5″, 2 EIA Rack Units

Power Requirements:
40 Watts, 100-240V
50/60 Hz

Shipping Weight:
15 lbs (6.8 kg)

Specifications are subject to change without prior notice

New in 2015 – 3 Year Factory Warrant to all Belar Products

Product Resources

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