Sorry I don't have a legal type answer for you, although I agree that it is
against the spirit of the directive. I just though I would expand the
controversy and ask if you know if they are also demanding that declarations
for other directives like the LVD are also included with the shipment?
Hi Leslie,
You may try a very convenient hand-held RF analyzer, Site Master
(http://www.global.anritsu.com/products/test/rfmicrowireless/s100_s200a_s300
a.html), to determine whether the cable is 50 or 75 ohm. The price of Site
Master is much less than Time Domain Reflector.
Barry Ma
You can find the harmonized standards at
http://europa.eu.int/comm/dg03/directs/dg3b/newapproa/eurstd/harmstds/index.
html
http://europa.eu.int/comm/dg03/directs/dg3b/newapproa/eurstd/harmstds/index
.html
--
From: fwhitfi...@rheintech.com
Posted for Green, Henry henry.gr...@gateway.com:
From: Green, Henry henry.gr...@gateway.com
Subject: RE: 50 ohm 75 ohm
Date: Wed, 14 Jul 1999 09:21:49 -0500
To: 'Leslie Bai' leslie_...@yahoo.com, emc-p...@majordomo.ieee.org
I HAVE HAD GREAT
Hi everyone,
I am currently involved with safety testing of a product which I know
falls under UL1951 - Safety of Electric Plumbing Accessories.
The device also needs to be tested for compliance with the LVD - does
anyone know what is the equivalent EN standard ? Also, is there a web
site
Recently French customs have started to demand that shipments of CE marked
electronic products are accompanied by a copy of the EC Declaration of
Conformity to the EMC Directive. Companies are having product held up and are
being fined.
This seems contrary to the spirit of the single market and
Every time I read this darn Directive, I find something new or I form a new
opinion. Now I have questions about the transitional period found in Article
18.2.
Member States shall not impede the placing on the market and putting into
service of apparatus which is in accordance with the provisions
Hi Kevin,
Most of what you have said is correct except I believe the authorities here
consider all power cords (except for HAR marked) to be declared whether
they are detachable or not. This is how we viewed the situation when I was
involved in regulatory policing some years back, and I would be
To All:
I have ISDN card that runs on +/- 2.5 Vdc. This is on my U- interface
board. I need to connect it the Net work Terminal. I have a 36 Vdc to 90
Vdc from exchange. How would I modify the design so that I can superimpose
the phantom power and still be in compliance with CTR and FCC. I
I concur with Kevin.
--
From: Kevin Richardson [SMTP:k...@compuserve.com]
Sent: Wednesday, July 14, 1999 4:10 AM
To: Gary McInturff
Cc: 'emc-pstc list server'
Subject: Just safety - nnot telecomunications
Gary,
The
Hi Gary,
Give me some info on your products and I will see if I can help. I
specialise in Australian electrical equipment safety issues and regulations.
Regards
Barry Esmore
AUS-TICK
(The Australian Compliance Professionals)
Phone: + 61 3 9886 1345
Fax: + 61 3 9884 7272
Email:
Gary,
The ACA (Australian Communications Authority) is only responsible for EMC,
Radcoms and Telecommunications. It is not responsible for any other type of
product.
The safety of any product placed on the Australian market is controlled by
trade practices type legislation and essentially
General Immunity thresholds for computer monitors:
30-450Hz: Approx. 160-170 dBpT
450Hz-15kHz: 100 dBpT
I have generally seen good immunity at frequencies in excess of 15kHz.
Tests performed with MIL-461C RS01 loop/audio oscillater+audio amplifier.
Monitor most sensitive when disturbance is
Leslie Bai wrote:
Anyone there can share the experience to measure
cables' impedance thus to identify whether a BNC
is a 50 ohm or 75 ohm cable.
The SECOND simplest way I've found (short of using an SWR meter and a 1:1.5
transformer)_ is as follows:
If you have an impedance bridge operating
Bai:
If you have a Network Analyzer, just connect the cable to the two port of
the analyzer through a BNC-SMA adpator. Measure the reflection coefficient
(S11 or S22) and the 75 ohm cable should have a larger reflection. That's my
expensive way of doing it.:-)
Alternatively, if the two cables
I'm pretty frustrated trying to officially determine the safety requirements
for Australia. I can't seem to get a handle on the ITE - but not
telecommunications - stuff. The EMC I have handled but want to confirm what
safety standards I need to meet. Again, I've tried the ACA URL
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