Actually, I have experienced such a unit at my former chiropractor, and it
actually felt pretty good to loosen my back before the back adjustment
session. I was really astonished to see a UL mark on this unit, especially
on the front panel. Note that this unit was a line connected unit, rather
Hello PSTC-ers
Further and contrary to the ideal requisites noted below by Richard Woods,
TENS and Muscle Stimulators ARE sold, via mail-order from the back of
Muscle-builder magazines (without any restrictions or need for
prescriptions).
They can also be found in shops in most any Chinatown
TENS units (Transcutaneous electronic nerve stimulation) are widely used to
treat pain. Muscle stimulators work on the same principle. Nerves will
activate (e.g., muscle contraction) with an e-field of 1.2 V/m. Here is a
spec for a typical TENS:
Pulse amplitude: 0-80 ma, adjustable
Pulse freq.:
Raymond,
I've been in such a position where we contested hi-pot
testing each and every AC power cable which was sent
with every product during production line testing. There
were two basic reasons: one, for the reason you've suggested
possibly introducing a failure. Second, the time
Roughly one year ago, there were a number of excellent appends to
this listserver on the basis for hi-potting, and what is and is not proven
by the hi-pot test. The recent discussion makes these of current interest
for those wanting a better understanding of the electric strength tests
cited
I read in !emc-pstc that Kim Boll Jensen kim.jen...@eicon.com wrote
(in 7B3DBD648709D5119E870002A528BE6C156948@BVDEXCHANGE) about
'TS0098/96 ?', on Wed, 22 Aug 2001:
Can som one help me. One of our costumers wants a Surge test according to
TS0098/96 Part 1 issue Feb. 98.
If your client is asking
I read in !emc-pstc that Peter Merguerian pmerguer...@itl.co.il wrote
(in 2D1037012914D4118DB8204C4F4F50202D5CF4@ITLLTD01) about 'FTEG', on
Wed, 22 Aug 2001:
What is FTEG and how does someone declares compliance? How is it related to
the RTTE?
Where did you find that acronym? If your client is
I read in !emc-pstc that HALL,KEN (HP-Roseville,ex1) ken_h...@hp.com
wrote (in 6bd67ffb937fd411a04f00d0b74fe878026ee...@xrose06.rose.hp.com
) about 'Vertical Ground Plane', on Wed, 22 Aug 2001:
By the way, we have extensive test data that indicates insignificant
difference between conducted
I read in !emc-pstc that raymond...@omnisourceasia.com.hk wrote (in
of5099731c.c8b3ec7a-on48256ab0.004e0...@omnisourceasia.com.hk) about
'Manufacturing Hipot Testing', on Wed, 22 Aug 2001:
I have read one BSEN standard suggesting not to perform hipot testing at
the test voltage, 3kV, 1.25kV or
These things have been around for a while, IIRC.
Basically, you hook up a pad or pads to places on
your body, adjust the level of muscle contraction you
think you need, and off you go exercising your
muscles while you ... walk the dog, read a book, ...
I have several questions:
1. How
I don't see where that proves anything ( 1/2 voltage testing)
using voltage applicable to product is required.
Testing for one second checks for shorts and miswiring
or spacings that may have been decreased due to workmanship.
Richard,
-Original Message-
From:
FTEG is the transposition of the RTTE directive into German law. It is an
acronym for Funkanlagen und Telekommunikationsendeinrichtungen Gesetz.
(Forgive me if I have made any spelling mistakes in the German name.)
Compliance with the RTTE directive implies compliance with FTEG.
Ted Eckert
Raymond,
The standards (e.g. IEC 60950 section 5.3.2) allow production hi-pot
testing to be reduced to 1 sec., but does not address any change in
voltage, up or down. It usually takes more than 1 sec. for a hi-pot
to ramp up, stabilize, then ramp down. We used to use about 3 secs
to ensure
Very well put, I would have to say.
Steve Yow
-Original Message-
From: geor...@lexmark.com [mailto:geor...@lexmark.com]
Sent: Wednesday, August 22, 2001 8:40 AM
To: emc-p...@ieee.org
Subject: Euro Agency Marks vs. CE Marking
Earlier exchange.
In Europe, there are
Hello,
The vertical ground plane is referred to/required in CISPR22:1997 for
conducted emissions if the EUT is on a table 80 CM from the floor. If the
table is 40 CM from the ground plane it is not required. See figures 4
through 6 of CISPR22:1997. In ANSI it is optional. This requirement is the
Dear All,
I have read one BSEN standard suggesting not to perform hipot testing at
the test voltage, 3kV, 1.25kV or 3.75kV in mass production. The reason is
that it might introduce potential failure in future operation by the
customer not immediate failure. It also suggests if hipot testing
Hi
Can som one help me. One of our costumers wants a Surge test according to
TS0098/96 Part 1 issue Feb. 98. Where do I find this standard and what is
the data of the surge test, is it like an ITU or FCC surge puls ?
Best regards,
Kim Boll Jensen
Approval manager
Eicon Networks
Denmark
Dear All,
What is FTEG and how does someone declares compliance? How is it related to
the RTTE?
PETER S. MERGUERIAN
Technical Director
I.T.L. (Product Testing) Ltd.
26 Hacharoshet St., POB 211
Or Yehuda 60251, Israel
Tel: + 972-(0)3-5339022 Fax: + 972-(0)3-5339019
Mobile: + 972-(0)54-838175
Earlier exchange.
In Europe, there are no longer any 'national approvals' like the old
SEMKO etc. There is ONLY the Low Voltage Directive, and the European
Standards (ENs) that have been 'notified' in the Official Journal as
providing evidence of compliance.
Not so,
I read in !emc-pstc that Colgan, Chris chris.col...@tagmclaren.com
wrote (in AE0F4BD08FEAD211895900805FE67B1FD6CAC3@CAT) about
'Manufacturing Hipot Testing', on Wed, 22 Aug 2001:
Well, you have come to the right conclusion but for two wrong
reasons.
In Europe, there are no longer any
Well, you have come to the right conclusion but for two wrong
reasons.
In Europe, there are no longer any 'national approvals' like the old
SEMKO etc. There is ONLY the Low Voltage Directive, and the European
Standards (ENs) that have been 'notified' in the Official Journal as
CISPR 22 allows either VCP or HCP, it's your choice.
Ari Honkala
Nokia
-Original Message-
From: ext Cook, Jack [mailto:jack.c...@cax.usa.xerox.com]
Sent: Wednesday, August 22, 2001 5:12 AM
To: emc-p...@majordomo.ieee.org
Subject: RE: Vertical Ground Plane
Joe,
Ref. ANSI
Joe,
Ref. ANSI C63.4: 1992, para. 5.2.2. The VGP is not required for a floor
standing EUT. And on an open area test site, it's optional for a tabletop
EUT (but preferred in case of dispute). Has this changed?
Sorry, this doesn't answer your question re CISPR 16 but I felt a
clarification was
ANSI 63.4 clearly specifies the requirements for a vertical ground plane
when performing conducted emissions measurements. I was unable to find
such clarifications when reviewing CISPR 16.
Do the CISPR standards require a vertical ground plane for conducted
emissions? If so, where is this
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