Title :
Probe for measuring interference voltages at ISDN telecommunication line interfaces
Author :
Kuwabara, Nobuo ; Ideguchi, Tsuyoshi
Author_Institution :
Telecommun. Networks Lab., NTT, Tokyo, Japan
Abstract :
A probe with asymmetrical characteristic impedance is proposed for measuring interference voltages at integrated services digital network (ISDN) line interfaces. The measurement error due to longitudinal conversion loss (LCL) of the telecommunication lines is studied. The investigation shows that the normal-mode interference voltages must be measured to estimate the common-mode voltages, which are converted from normal-mode voltages by unbalance of the lines.<>
Keywords :
ISDN; electric field measurement; electromagnetic interference; measurement errors; probes; voltage measurement; ISDN telecommunication line interfaces; asymmetrical characteristic impedance; common-mode voltages; interference voltage measurement; longitudinal conversion loss; measurement error; normal-mode interference voltages; probe; Communication cables; Current measurement; ISDN; Impedance measurement; Interference; Measurement errors; Optical fiber cables; Probes; Tellurium; Voltage;
Conference_Titel :
Electromagnetic Compatibility, 1988. Symposium Record., IEEE 1988 International Symposium on
Conference_Location :
Seattle, WA, USA
DOI :
10.1109/ISEMC.1988.14134
