© ABB Group
May 26, 2021 | Slide 4
CPL - Histoire
1944 ... Analog DSB PLC
Valves ZSB
1950 ... Analog SSB PLC ESB10 (10 W)
Valves
1955 … Analog SSB PLC ETA (4.5 W)
Germanium Transistors
1960 ... Analog SSB PLC ETB, ETC (15/100 W)
Silicon Transistors
1976 ... Analog SSB PLC ETI 21,22 (20 W)
Integrated Circuits ETI 101,102 (100 W)
1990 ... Analog SSB PLC ETL 41,42,43,44 (40 W)
“Programmable”; Partial DSP ETL 81,82,83,84 (80 W)
1997 ... “Digitized” SSB PLC ETL500 Rel.1 (40/80 W)
GUI; Full DSP ETL500 Rel.3 (40/80 W)
1998 ... Digital PLC ETL500/AMX500
Digital Signal Processing ETL600/MOD600/
Digital Modulation, Voice Coding MUX600/LAN600
DSB: Double Side Band
SSB: Single Side Band
DSP: Digital Signal Processing
GUI: Graphical User Interface