NLC5.1ST User Manual 15PSU 1 / PSU 2 – Two IEC320 C14 ports to connect to AC Mains. The internal power supply is autoswitching and will work on 120VAC-60Hz or 240VAC-50Hz electrical power systems with a maximumtotal current draw of 25W (>.25A 120VAC or >.15A 240VAC).HD/SDINLC5.1ST can use an optional factory-installed HD/SDI I/O module to de-embed audio programs froma HD/SDI stream for loudness processing.The HD/SDI module contains 3 GB/S SDI technology and will auto-detect the signal, whether SD, HDor HD 3GB/S format. Audio will be automatically extracted from popular video standards such as:NTSC 525/29.97, PAL 625/25, 1080i/59.94, 1080i/50, 1080PsF/23.98, 1080PsF24, 720p/59.94 and720p/50. The sample rate of extracted audio is converted to 48 kHz, 24 bit resolution regardless of thesource material and is available as AES audio at NLC5.1ST’s output jacks.Meter DisplayLED display shows current true-peak amplitude of the audio signal from -60dB to 0dB across all activechannels. Unused channels will not light the display. The meters are updated every 20ms and have aninstant decay.L - Left (AES channel 1) Ls - Left Surround (AES channel 5)R - Right (AES channel 2) Rs - Right Surround (AES channel 6)C - Center (AES channel 3) Stereo L - Auxiliary Left (AES channel 7)LFE - Low Frequency (AESchannel 4) Stereo R – Auxiliary Right (AES channel 8)Metering display NLC5.1ST