Hello Ralph,
Has anybody mentioned the EN 60945 standard to you? Clauses 9 & 10 are for EMC,
however it covers a lot of other things in that standard for electrical
equipment on ships.
Larry K. Stillings
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;t know by how much.
Is it really that much more work to take a QP, or maybe the automation software
doesn't support that? We're old school and still take the data manually and I
have the guys always take both (peak and quasi-peak).
Larry K. Stillings
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ERC 70-03 which I always go back to since that is the
document that demonstrates what frequency ranges have been adopted. See Annex
I, page 8.
https://docdb.cept.org/download/4435
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now the 99% OBW is 200 kHz, then I would believe
you'd need a center frequency of ~863.11 MHz, because it would be half of the
OBW, or the edge of the signal would be at 863.01 MHz with a 863.11 MHz center
frequency.
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Hi Brian,
You will find similar procedures for Permissive Changes in ISED RSP-100
https://ised-isde.canada.ca/site/spectrum-management-telecommunications/en/devices-and-equipment/radio-standards-procedures-rsp/rsp-100-certification-radio-apparatus-and-broadcasting-equipment
Larry K. Stillings
Hi John,
Ok thanks. I’m mixing power (Watts) vs. voltage and/or current.
If I was dealing in units of Watts, then that is where the 10 * log would come
into play because I’ve already “squared”
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the time isn't
that a 20 dB reduction?
Or for some reason because it is a pulsed emission you are allowed to use 20 *
log and have a 20 dB reduction for a 10% duty cycle or less because anything
greater than 20 dB is the maximum allowable correction / reduction for a pulsed
emission?
abs are bad and/or incompetent. How about in the future you find a
different way to word things.
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357
fitted with an
attenuator at the antenna’s connector to meet these requirements.
We found that a 4 dB attenuator was needed on one style 30 – 2000 MHz antenna
and a 5 dB was needed on another style antenna with the same frequency range.
Larry K. Stillings
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Hi John,
I believe you mean EN 50715:2022
https://standards.cencenelec.eu/dyn/www/f?p=305:110:0FSP_ORG_ID,FSP_PROJECT,FSP_LANG_ID:1258289,68318,25&cs=1F3EE324B714B7C6895A8362CA3F1B47B
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turntable at a 3 meter distance so it is within its ½ power beamwidth at all
times as it travels up and down the antenna mast.
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is most likely found in
ANSI C63.10 2013 as that speaks to using a dummy load, etc. also searching the
FCC KDB (Knowledge DataBase) and see if your question has already been asked
and answered based on a previous inquiry which can be done here.
https://apps.fcc.gov/oetcf/kdb/index.cfm
Larry K
Ryan,
You should also be looking at ETSI EN 303 446-1 or -2 for guidance on
integrating the radio module into your end product. The FCC has similar KDBs on
the subject for USA deployment.
And also be aware of new cyber security rules being developed, ETSI EN 303 645
Larry K. Stillings
Doug,
I would think FCC Part 15 Subpart B, Class A is applicable for the rest of the
system, some say its exempt, I would go on the side of caution and see if it
will me Class A.
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w.do?nb_seq=2896&cpage=2&nb_type=6&searchCon=&searchTxt=&sortOrder=
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357 Main Str
L-Com seems to have a good understanding on how to construct HDMI cables with
360 shields
https://www.l-com.com/audio-video-hdmi-cable-assemblies
Known problem for quite some time now
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l the
charging and NFC be strictly used for WPT.
If I am reading things correctly there is a static mode of operation and a
negotiated mode of operation, so you would need to know which technology is
being used to determine what standards applies.
Thanks.
Larry K. Stillings
Compliance Worldwide, Inc.
.
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ETSI EN 303 417
standard in a future edition, as the scope still stops with the 6.78 MHz band.
Or maybe develop a new standard all together or add a new part to EN 300 330
for NFC WLC technology?
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-sts.com/en/wideband-emf/radman-2-xt-radman-2-lt/
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John,
ETS Lindgren has some smaller loop antennas in their product line.
http://www.ets-lindgren.com/products/antennas/loops
Schwarzbeck has some options as well
http://schwarzbeck.de/en/antennas/loop-antennas.html
Larry K. Stillings
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although it calls out the IEC 61000-4-x series, the
standards do not specify test levels for those IEC standards.
Thank you in advance.
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Hi Charlie,
Thanks for your input. It's a floor standing device for entrance into
buildings, etc.
It is rather large (roughly 2 Meters in height) and designed to cover two
entrances simultaneously.
Larry K. Stillings
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has worked on one of these and has an
elegant solution. One thought I had was to line the ground plane with ferrite
tile floor / wall panel squares (2' x 2' kind e.g 600mm x 600mm), but where
they work at such low frequency I assumed that wouldn't help.
Larry K. Stillings
Compliance
Hi John,
There is an IEEE presentation dated 1992, but you may already be aware of that?
Unfortunately my IEEE account doesn't have access to that document, it might
have some useful references.
https://ieeexplore.ieee.org/document/168355
Larry K. Stillings
Compliance Worldwide, Inc.
.
The CFL light bulb issue is well known, but not much has been done that I have
observed, other than the selling of LED bulbs to replace them 😉
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whatever is converting the
12 VDC from 120 VAC, 60 Hz, customer supplied or representative sample
of what the customer suggests to be used with their product.
Larry K. Stillings
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Mark,
The document you are looking for is REC 70-03 found here. This will
cover both technology and country restrictions by Frequency Band.
https://www.ecodocdb.dk/download/25c41779-cd6e/Rec7003.pdf
Larry K. Stillings
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All,
I saw this come by LinkedIn Eurofins York page.
https://www.gov.uk/government/news/uk-and-usa-agree-to-continue-mutual-r
ecognition-agreement
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ions, however I would like to
focus on the surge testing at the moment. I am pretty sure at least one
of the standards says conducted emissions shall be tested on each port
individually, but we don't need to go there right now ;-)
Thoughts when you get responses like this?
Larry K. Stillings
Pete,
I assume you are speaking about a device that would be using an FCC ID.
Grantee Codes specifically don't use "1" ones or "0" zeros so that there
is not confusion with capital I or letter o, however there is no
restriction on what is used in the product code. To answer your
question, if yo
Hi Chet,
ETSI did publish EN 302 066 V2.1.1 (2017-01) for application under the
RED, and contains receiver requirements as specified in TS 103 361
V1.1.1 (2016-03) Clause 9.
Why it was not published as a harmonized standard under the RED is a
good question and I assume only a handful of peo
All,
So it looks like I misunderstood the FCC press release. This has not
been published in the Federal Register and also has to be approved by
the OMB. So nothing is actually official yet, but the word "soon" was
used.
Larry K. Stillings
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in 90 Days or October
12, 2017
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the lower frequencies (up to 2.7 GHz) are still passing up
to 6 GHz.
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.
Right now the only Immunity standards that are to be published by ETSI
under the RED for a device with Bluetooth is EN 301 489-1 V2.1.1 and EN
301 489-17 V3.1.1. So the product would need to be in compliance with
those.
I'm sure others here can provide further insight.
Larry K. Stil
Grace,
There are ETSI standards such as TS 103 051 that addresses MU up to 100 GHz and
TS 103 052 which addresses radiated measurement sites up to 100 GHz.
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You forgot pay tolls on a freeway
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they use a rubber gasket to keep the two metal surfaces inside and
outside of the chamber isolated when installing a brass waveguide
feed-through pipe penetration ?
I am just assuming this would defeat the purpose of having a 3 line
filter.
Larry K. Stillings
Compliance Worldwide, Inc.
Tes
Ken,
This DROK meter says it can do it, I'm not sure how susceptible it is
however.
http://www.amazon.com/DROK-Multimeter-Measuring-Resistors-Transformer/dp
/B015XVU1J0
Larry K. Stillings
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All,
On another note, does anyone know why in the In-Vitro diagnostic
directive EN 61326-2-6, is still referencing the 2006 edition, and not
the 2013 edition?
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ed shielded non terminated cable or drain wire to the shell
cable to show them the difference that all cables are not created equal
when it comes to radiated emissions.
Larry K. Stillings
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Ken,
I think FCC Document OET 62 from the 1990's gives a pretty good overview of the
classes, exemptions etc. Instead of me just reciting it, you can read it here
https://transition.fcc.gov/Bureaus/Engineering_Technology/Documents/bulletins/oet62/oet62rev.pdf
Larry K. Stil
Charles,
Schwarzbeck sells a QP measuring box, as I have seen one used by my
calibration company to verify our QP adapters.
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then if the port is not populated during
the testing, does that port have to be somehow "covered" so that port
cannot be used in the field.
Thank you in advance.
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cond dwell time, but as far as I know it is required.
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21-x
standards, but that is always a financial / business decision on what
the risk is of performing no testing.
Larry K. Stillings
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All,
And just to comment further on this. If the fabric really did work, then your
battery would be dead because it would be in constant high power mode trying to
find an available cell tower, which means each time you placed it in this magic
fabric you would have to turn your phone off. Now
Doug,
Until the article also said it blocked 13.56 MHz (RFID), it was Almost
believable. But no way does “police grade shielding fabric” whatever that
nonsense means blocks 13.56 to 2.4 GHz.
You’d be better off wrapping your cell phone in aluminum foil, and might as
well wear a hat made
Andy,
Because to my knowledge, telecommunications ports have never caused any
interference ;-)
I'm sure someone else has a better answer.
Larry K. Stillings
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power strip and perform
the testing once.
Any guidance or references to clauses in standards is greatly
appreciated.
Larry K. Stillings
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Curt,
I am not sure if I understand your question, but maybe. The devices can
passively scan, but to operate on channels 12 or 13 would most likely be
a violation of FCC rules unless the power on those channels were 1 mW or
less. The peak power at the band edge of 2483.5 MHz is 74 dBuV/m when
mea
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