Q
RRack System 19"
The 19” rack system is made up of different mechanical and electromechanical parts which can be combined to form electronic appliances and equipment in a modular construction. The measurements of 19” rack systems are laid out in DIN specifications as well as in IEC publications. Rear I/O
The term Rear I/O deals with bus circuit boards. Rear I/O are pins on the back of bus circuit boards which can be freely allocated so that the user can attach his expansion cards as needed. RFI
Abbreviation for "Radio Frequency Interference". This exists beyond a frequency of approx. 100kHz.
SSMD
Abbreviation for “surface mounted device”. These are electronic components that don’t have connection wires but are instead placed directly on the surface of an electronic circuit board and attached with solder. SMT
Abbreviation for “surface mounted technology”
TTermination
Termination is a particular end of a cable on a bus circuit board.
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