FW:
Pardon if this sounds too commercial, but you did ask. My first choice for RF
enclosures, antenna ranges and modification/service work is Hi-Tech Services,
run by Henry “Ozzy” Osgood. He is based in Ferndale, Washington, although he’s
temporarily at an undisclosed location in Virginia. O
You can use the signal words in products that are safe to keep them safe. For
example Caution - high leakage current, earth connection essential…. And
Warning- risk of injury, do not operate without guards in place. There are
lots of examples at safteylabelsolutions.com and clarionsafety.co
Hi Greg:
If you have a product that requires the use of the signal words (except
“notice”), then you have, by definition of the signal word, an un-safe product.
For conventional products, you shouldn’t have to use the signal words.
Best regards,
Rich
-
--
In message
, dated
Tue, 3 Mar 2015, "Grasso, Charles" writes:
It is generally reported (at least as far as I can remember) that a
ferrite bead clamped on a cable
will provide ? typically- only about 3db of improvement as a general
rule. I am now in a position
of looking for the source of tha
In message <000f424e.6fe8225c75b15...@rpqconsulting.com>, dated Tue, 3
Mar 2015, "Ron Pickard (RPQ)" writes:
I think the EU put the cart before the horse on this one,
metaphorically speaking.
A lot of people think that. In the past, the EU has stopped its official
clock in order to deal wit
In message
.com>, dated Tue, 3 Mar 2015, Brian Oconnell
writes:
Picochance? What SI unit is the 'chance' derived from?
1 chance is the time in seconds to vaporize a 1 kg snowball in Hell, at
a temperature of 10 thousand kelvins.
--
OOO - Own Opinions Only. With best wishes. See www.jmwa.d
Ah, yes, Spring is in the air here on the Left Coast, with dreamy thoughts of
an installation of a used screen room/anechoic chamber.
Have any vendor recommendations for such used equipment?
Many thanks,
FW Miller
-
This message i
It really depends on the impedance of the wire or cable it’s clamped around. If
the impedance is low, compared to the ferrite Z, then you’ll get some benefit.
If it’s high, for example, 100 Ohms, then a 100 Ohm ferrite won’t do anything.
A good reference is Würth Electronics, Trilogy of Magnetic
As an outsider to the EU process, all I can do is hope it all gets
completed on time. But, I am skeptical that all the member states and ETSI can
get that all done by the 2016 dates. I think the EU put the cart before the
horse on this one, metaphorically speaking.
I look forward t
Picochance? What SI unit is the 'chance' derived from?
This could be useful in my uncertainty calculations.
Brian
-Original Message-
From: John Woodgate [mailto:j...@jmwa.demon.co.uk]
Sent: Tuesday, March 03, 2015 10:11 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Harmonised S
In message <000f424e.66f2bca822817...@rpqconsulting.com>, dated Tue, 3
Mar 2015, "Ron Pickard (RPQ)" writes:
For your question, I guess we'll have to wait and see if the member
states and ETSI meet the 2016 dates in those directives.
I meant a bit more than that. What chance is there of all
Thanks Doug!
Best Regards
Charles Grasso
Compliance Engineer
Echostar Communications
(w) 303-706-5467
(c) 303-204-2974
(t) 3032042...@vtext.com
(e) charles.gra...@echostar.com
(e2) chasgra...@gmail.com
From: Doug Powell [mailto:doug...@gmail.com]
Sent: Tuesday, March 03, 2015 11:03 AM
To: Grasso,
That's good advice ED - and matches my experiences too.
Best Regards
Charles Grasso
Compliance Engineer
Echostar Communications
(w) 303-706-5467
(c) 303-204-2974
(t) 3032042...@vtext.com
(e) charles.gra...@echostar.com
(e2) chasgra...@gmail.com
From: Ed Price [mailto:edpr...@cox.net]
Sent: Tuesda
Chuck:
I would delete that particular rule of thumb from my mayonnaise jar full of
rules. 3 dB is easy to get with a ferrite on a high impedance data line at
800 MHz, but a lot harder to obtain at 37 MHz on a stepper motor drive line.
Ed Price
WB6WSN
Chula Vista, CA USA
From: Grasso, Ch
In message
>, dated Tue, 3 Mar 2015, Rick Busche writes:
As for NOTICE, I have seen the exclamation point used as an icon in
front of the statement. It seemed to convey the message very well.
Based on ISO 3864-2 or ANSI Z536.6 is this allowable?
It means 'Refer to the instruction book'. If
Charles,I have never heard such a rule of thumb. And I have personal experience showing that many factors will make a big difference so I always caution engineers to be careful with placing ferrite and verify their results. Here are some factors off the top of my head.Material type will obviously
Exclamation point (in a triangle) is explicitly associated with a personal
injury hazard. Its use with a NOTICE, which is explicitly not a personal injury
hazard, is not in accordance with the ANSI or ISO standards.
In my experience, UL standards are often not in synch with these latest ISO and
CSA provides the respective standard's Design Manual for clients that are
accredited per their Category Certification program.
Coatings and paint are specifically disallowed per CSA No. 0.4 (which is a
requirement per ANSI60950-1), and this standard is the basis of the 40A test.
Also, various N
Hi John,For your question, I guess we'll have to wait and see if the member
states and ETSI meet the 2016 dates in those directives.
I look forward to you reply.
Best regards,Ron PickardSent from my smartphone
-- Original message--From: John WoodgateDate: Mon, Mar 2, 2015
Hello all,
It is generally reported (at least as far as I can remember) that a ferrite
bead clamped on a cable
will provide - typically- only about 3db of improvement as a general rule. I am
now in a position
of looking for the source of that "common knowledge" .. Does anyone have such
a refer
As for NOTICE, I have seen the exclamation point used as an icon in front of
the statement. It seemed to convey the message very well. Based on ISO 3864-2
or ANSI Z536.6 is this allowable?
Rick
From: Greg McClure [mailto:gmccl...@lexmark.com]
Sent: Tuesday, March 03, 2015 8:40 AM
To: EMC-PSTC@
The way I would apply it would be first to apply any specific safety messages
that the end product standard states. If you need a safety message that is not
defined by the end product standard, than the signal word you choose should
follow their definitions and matched up with your risk assessm
In message
<64D32EE8B9CBDD44963ACB076A5F6ABB026D18D3@Mailbox-Tech.lecotech.local>,
dated Tue, 3 Mar 2015, "Kunde, Brian" writes:
Is there a free on-line reference showing acceptable methods for ground
bonding? Screws vs studs? How to properly stack ground bond lugs on to
a single stud? Lock
Looking for input from the group.
The definition of the signal words per ISO 3864-2 and ANSI Z535.6 are:
DANGER - signal word used to indicate an imminently hazardous situation
which, if not avoided, will result in death or serious injury
WARNING - signal word used to indicate a potentially haza
Is there a free on-line reference showing acceptable methods for ground
bonding? Screws vs studs? How to properly stack ground bond lugs on to a single
stud? Lock washers, star washers, lugs with serrated edges, screws with
serrated heads, etc..? Something like this would be most helpful. I rec
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