Resending following message:
FROM: Georg M. Dancau, 100536,2175
TO: emc-pstc group, INTERNET:emc-p...@ieee.org
DATE: 11.03.1997 05:35
Re: Copy of: Re: Specs for VDE878
Patrick Lawler <plaw...@west.net>wrote:
>I've come across a product requirement spec'ing VDE878
>(Interference-telcom systems).
>Does anyone have a brief description of the requirements?
>- Is it radiated or conducted?
>- If it's a conducted EMI spec, is it voltage-referenced using LISN's, or
>current-referenced using a current probe?
>- Frequency range?
>Thanks,
Hi Patrick
Following Standards of the VDE 0878 are valid:
VDE0878 Part 2 (July 1988)
Radio interference suppression of telecommunication equipment;
Equipment in telecommunication operating rooms
The standard contains no limits but points to Part 1 of VDE0878,
which is no longer valid. I think you still have to choose your
measurement methods and measurement points according to this standard.
VDE0878 Part 22 (May 1995)
Limits and methods of measurement of radio disturbance characteristics
of information technology equipment
German version of EN55022 (1994) and CISPR 22 (1993)
Replaces:
VDE 0878 Part 1 (1986-12)
VDE 0878 Part 3 (1989-11)
VDE 0878 Part 22/A1: Dec. 1995
Limits and methods of measurement of radio disturbance characteristics
of information technology equipment
German version of EN55022:1994 /A1:1995 and CISPR 22:1993/A1:1995
VDE 0878 Part 200 (Dec. 1992)
Electromagnetic compatibility of information technology equipment and
telecommunication equipment;
Immunity of analogue subscriber equipment
Covered Phenomena:
narrow band conducted disturbances (10kHz-150MHz)
pulsed conducted disturbances
burst (fast transients)
surges 1.2us/50us AND 10us/700us
electromagnetic fields - under consideration !!!
electrostatic discharge (interesting setup for indirect discharge)b
VDE0878 Part 240 ("vornorm"=pre-standard)(July 1993)
Electromagnetic compatibility of information technology b
and telecommunication equipment;
Immunity of information technology equipment
This standard tries to harmonize the immunity limits with EN50082-1
ESD - Table A1, Row A.1.4
EM fields Table A1, Row A.1.2
Conducted RF Table A.2 Row A2.2
Table A.4 Row A.4.5
Transients Table A.3 Row A.3.3
Table A.4 Row A.4.4
Table 2 Row 2.1
Table 3 Row 3.1
Table 4 Row 4.1
"This standard shall be valid as log as EN55024-1 to EN55024-4 have
not
yet been published" (Very very free translation).
I hope this helps.
Regards
George
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