VIO ALCHD is designed to ensure the analog audio or audio embedded in video to hold on to the required level in broadcast system, such as ¡°On Air¡± environment, program edit studios, satellite program recording rooms, etc. It is usually used to adjust the audio gain threshold manually; is adapted to auto varying audio gain limiting to the disposed scope, these two all can work with the remote control panel, on which LCD,PPM/VU meters and HI-FI speakers are equipped.

SNMP and RS-232 control protocol are also built in the machine. All the configuration and operation can be done by three ways, which are RCP, SNMP and RS-232. VIO ALC-HD is a prefect standalone device to meet FCC newly imposed new rule for Commercial Advertisement Loudness Mitigation (CALM) Act.