WEST CHESTER, Pa.�The St. Cloud/Collegeville network of Minnesota Public Radio has gotten a hand with aligning its FM and HD programming signals fromBelar�sFMHD-1 modulation monitor. KNSR (FM) and KSJR (FM) installed the system to help with issues including time alignment, limited remote connectivity options and hardware failures.
The FMHD-1 uses Belar Automatic Delay correction software with the Orban Optimod audio processor to handle HD Diversity Delay by adjusting the eight second time delay automatically. The ADC software continuously measures the signal error and communicates the necessary adjustment to the delay line in the Optimod.
The FMHD-1 also features an Automated Channel Scanning software that allows it to monitor both stations from a single system. The system switches between the two stations� Optimod systems every five minutes to perform a time alignment check, according to Darwin Stinton, the network radio engineer.