Treggers, I am considering changing the power supply on a telecom terminal we market to the UK. I ask BABT what was required of us to maintain our current approval for the terminal except with a new power supply. They replied that we must fill out a "BABT 701 safety form and, if appropriate, they (we) must commission type tests in respect of switch mode spectral noise output at a UK test laboratory to verify that the new psu complies with the PSTN network access requirements." I intend to call BABT to clarify that statement, but since the day has come and gone in UK, I thought perhaps someone on the network here could give me some information I can use before the week ends.
1) The BABT 701 specifies the basis of safety evaluation should be to EN 60950 PLUS EN 41003. Is EN 41003 not included in EN 60950 or is EN 41003 a seperate entity? I thought I heard at one point the EN 41003 was represented in Clause 6 of the EN 60950. 2) What tests are required for testing the "...switch mode spectral noise..." and is this covered in either the 60950 or the 41003? 3) Anyone want to expound upon a method to determine if indeed the test falls into the "...if appropriate, ..." category? Thanks for any help, roger [email protected] "To laugh, to cry, its all the same, Just ask the circus clown." - ralf
