Mel, > Does anyone know what the Mexican reference impedance is for voiceband applications? Is it 600 ohms? or > some complex impedance?
It is a complex impedance, 820 ohms in parallel with 115 nFd, then those two components in series with 220 ohms, as shown in Figura 15. - Medicion de la perdida de retorno, E.B. 3-15, 1994. (Note that this is almost identical with the AUSTEL complex impedance, except that AUSTEL uses 120 nFd.) ________________________________________________________________ John Combs, Senior Project Engineer, ITS/TestMark Laboratories Email: [email protected] URL: http://www.testmark.com
