Title :
CISPR 22: 1997 conducted emission on telecom ports products pass/fail depending on test method
Author :
Hall, Ken ; Pommerenke, David
Author_Institution :
Hewlett-Packard, Roseville, CA, USA
Abstract :
This paper analyzes test result differences for emissions testing in accordance with CISPR22: 1997. Emphasis is laid on unshielded twisted pair cables. It shows potential errors due to imbalance in coupling of the capacitive clamp to the wires of a differential pair and the influence of the common mode source impedance on current clamp and ISN measurements
Keywords :
electric current measurement; electric impedance; electric noise measurement; electromagnetic interference; twisted pair cables; voltage measurement; CISPR 22: 1997; ISN measurements; capacitive clamp coupling imbalance; common mode source impedance; conducted emissions testing; current clamp measurements; test result differences; unshielded twisted pair cables; Cables; Calibration; Clamps; Current measurement; Impedance measurement; Laser modes; Ring lasers; Telecommunications; Testing; Token networks;
Conference_Titel :
Electromagnetic Compatibility, 2001. EMC. 2001 IEEE International Symposium on
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-6569-0
DOI :
10.1109/ISEMC.2001.950502
