M4FM-HD Analog and FM-HD Radio Modulation Monitor                               

Using a state-of-the-art Texas Instruments® DSP, all of M4FM-HD processing takes place in the digital domain providing precise, stable measurements. Out-of-tolerance conditions can be reported via email and 5 user-defined rear panel alarm tallies.

M4FM-HD Key Features

• Analog FM plus HD Radio^TM – Complete monitoring of HD Radio FM broadcasts including FM multicast channels HD-2 through HD-8: user-selectable tuning steps and analog FM 50/75 µSec de-emphasis.
  
  
• Robust 24/7 performance – stays locked to FM analog, HD-1 or selected multicast stream during power or I2E interruptions; does not automatically revert to analog!
  
  
• Built-in RF Attenuator – 30 dB for wide RF input range of <0.5 vRMS to 7 vRMS.
  
  
• Time-Alignment – Monitor your HD Radio HD-1/MPS diversity delay using the built-in Split-Mode feature.
  
  
• Bright graphic LCD – provides front panel display of DSPrecision demodulated audio, carrier, pilot, composite and SCA level measurements with better than 1.0% accuracy; RBDS and HD Radio PAD/SIS, along with network and alarm conditions, audio level and carrier quality indications.
  
  
• High-performance Audio Outputs – XLR balanced analog outputs +4 dBm @ 100% modulation; front panel headphone monitor delivering greater than 1W into 8-ohm. Full-time AES3 digital audio output is available, even when tuned to non-HD signals.
  
  
• Powerful Alarm Monitor – Simultaneously monitor for loss of MPS and HD-1 Program Audio as well as loss of: 
• RF Carrier
• Audio Loss
• OFDM Lock
• HD Lock
• Multicast
  
• Over-Modulation

• Rear Panel Alarm Tallies – 6 user-configured rear panel alarm tallies.
  
  
• Reset-reboot – via front panel RESET switch and rear panel GPI.
  
  
• Front Panel Lockout – Prevents unauthorized settings changes.
  
  
• Composite BNC output – for external subcarrier (SCA) decoding and translator applications.
  
  
• All tuners are RDS/RBDS capable.

M4FM-HD Powerful Remote Webserver

• Built-in Webserver – Remote control and monitoring using any browser on your Ethernet network; 10 presets per AM-FM band
  
  
• DSPrecise^TM Analog Modulation Measurements – Simultaneous demodulated audio, carrier, pilot, composite and SCA level measurements.
  
  
• Alarm Monitor – Simultaneously monitor for loss of MPS and HD-1 program audio, Artist Experience artwork, PSD and SIS data, RBDS PS and RT fields, Carrier and OFDM HD Radio Lock
  
  
• Remote Flash upgrades – using its rear panel Ethernet port; tolerant of high-latency networks.
  
  
• Password protected access.