The PSU22/1 is the UMD power supply unit. A single serial connection from a Controller provides UMD data and the signal is distributed along with power to up to 96 UMD via the RJ45 connections on the back.
“The TSL PAM2 MK2 gives us the power to monitor loudness for compliance with new broadcast standards, accurately meter audio for many sources and provide phase information. We are very pleased with the performance of the PAM2 MK2 units.”
Mr. Chu Cun, Head of Technical Operations at Beijing TV