Rocksolid Light

Welcome to novaBBS (click a section below)

mail  files  register  newsreader  groups  login

Message-ID:  

6 May, 2024: The networking issue during the past two days has been identified and appears to be fixed. Will keep monitoring.

tech / sci.electronics.design / Re: Meter accuracy specification question

SubjectAuthor
* Meter accuracy specification questionJohn S
+* Re: Meter accuracy specification questionJan Panteltje
|`* Re: Meter accuracy specification questionPhil Allison
| `- Re: Meter accuracy specification questionJohn S
+* Re: Meter accuracy specification questionDon Y
|`- Re: Meter accuracy specification questionJohn S
+- Re: Meter accuracy specification questionTTman
+* Re: Meter accuracy specification questionehsjr
|`* Re: Meter accuracy specification questionJohn S
| `- Re: Meter accuracy specification questionRicky
`* Re: Meter accuracy specification questionFred Bloggs
 `* Re: Meter accuracy specification questionJohn Larkin
  +* Re: Meter accuracy specification questionFred Bloggs
  |`- Re: Meter accuracy specification questionLasse Langwadt Christensen
  `* Re: Meter accuracy specification questionFred Bloggs
   `- Re: Meter accuracy specification questionRicky

1
Meter accuracy specification question

<thatf8$1aocf$1@dont-email.me>

  copy mid

https://www.novabbs.com/tech/article-flat.php?id=107156&group=sci.electronics.design#107156

  copy link   Newsgroups: sci.electronics.design
Path: i2pn2.org!i2pn.org!aioe.org!eternal-september.org!reader01.eternal-september.org!.POSTED!not-for-mail
From: Soph...@invalid.org (John S)
Newsgroups: sci.electronics.design
Subject: Meter accuracy specification question
Date: Sat, 1 Oct 2022 22:36:16 -0400
Organization: A noiseless patient Spider
Lines: 5
Message-ID: <thatf8$1aocf$1@dont-email.me>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
Injection-Date: Sun, 2 Oct 2022 02:36:24 -0000 (UTC)
Injection-Info: reader01.eternal-september.org; posting-host="0476b592884bce942c9ce084b0a652a1";
logging-data="1401231"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19ExI/6VgW37AJhOn+Xg3CH"
User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:91.0) Gecko/20100101
Thunderbird/91.13.1
Cancel-Lock: sha1:DSK6wSXRsXG770Iz4m6fAoMTwRo=
Content-Language: en-US
 by: John S - Sun, 2 Oct 2022 02:36 UTC

USB tester says "Voltage measurement accuracy: ± (0.8% + 4 words)"

What does the "4 words" mean?

Thanks.

Re: Meter accuracy specification question

<thb6ef$1kfrj$1@dont-email.me>

  copy mid

https://www.novabbs.com/tech/article-flat.php?id=107172&group=sci.electronics.design#107172

  copy link   Newsgroups: sci.electronics.design
Path: i2pn2.org!i2pn.org!eternal-september.org!reader01.eternal-september.org!.POSTED!not-for-mail
From: pNaonStp...@yahoo.com (Jan Panteltje)
Newsgroups: sci.electronics.design
Subject: Re: Meter accuracy specification question
Date: Sun, 02 Oct 2022 05:08:05 GMT
Organization: A noiseless patient Spider
Lines: 10
Message-ID: <thb6ef$1kfrj$1@dont-email.me>
References: <thatf8$1aocf$1@dont-email.me>
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-15
Content-Transfer-Encoding: 8bit
Injection-Date: Sun, 2 Oct 2022 05:09:35 -0000 (UTC)
Injection-Info: reader01.eternal-september.org; posting-host="47993dcd1fd20ebc93578206bca6afaf";
logging-data="1720179"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18+lNbF5EcsniZV//ZAuXmiqgZzaAh0kpE="
User-Agent: NewsFleX-1.5.7.5 (Linux-2.6.37.6)
Cancel-Lock: sha1:wO/qmIOmumBmgJD4t/ld2F7+SWA=
X-Newsreader-location: NewsFleX-1.5.7.5 (c) 'LIGHTSPEED' off line news reader for the Linux platform
NewsFleX homepage: http://www.panteltje.com/panteltje/newsflex/ and ftp download ftp://sunsite.unc.edu/pub/linux/system/news/readers/
 by: Jan Panteltje - Sun, 2 Oct 2022 05:08 UTC

On a sunny day (Sat, 1 Oct 2022 22:36:16 -0400) it happened John S
<Sophi.2@invalid.org> wrote in <thatf8$1aocf$1@dont-email.me>:

>USB tester says "Voltage measurement accuracy: ± (0.8% + 4 words)"
>
>What does the "4 words" mean?
>
>Thanks.

Goolge translate from Chinese?

Re: Meter accuracy specification question

<f4d6e469-4962-431d-bdc3-97c8ab4e4ed7n@googlegroups.com>

  copy mid

https://www.novabbs.com/tech/article-flat.php?id=107175&group=sci.electronics.design#107175

  copy link   Newsgroups: sci.electronics.design
X-Received: by 2002:a05:6214:2a85:b0:4b0:3f58:b274 with SMTP id jr5-20020a0562142a8500b004b03f58b274mr8232046qvb.126.1664689845804;
Sat, 01 Oct 2022 22:50:45 -0700 (PDT)
X-Received: by 2002:ac8:5948:0:b0:35c:db03:be9 with SMTP id
8-20020ac85948000000b0035cdb030be9mr12395313qtz.29.1664689845640; Sat, 01 Oct
2022 22:50:45 -0700 (PDT)
Path: i2pn2.org!i2pn.org!usenet.blueworldhosting.com!feed1.usenet.blueworldhosting.com!peer03.iad!feed-me.highwinds-media.com!news.highwinds-media.com!news-out.google.com!nntp.google.com!postnews.google.com!google-groups.googlegroups.com!not-for-mail
Newsgroups: sci.electronics.design
Date: Sat, 1 Oct 2022 22:50:45 -0700 (PDT)
In-Reply-To: <thb6ef$1kfrj$1@dont-email.me>
Injection-Info: google-groups.googlegroups.com; posting-host=124.150.75.166; posting-account=B_tJMAoAAAAmar-1r2H3x4CMhbFEou3n
NNTP-Posting-Host: 124.150.75.166
References: <thatf8$1aocf$1@dont-email.me> <thb6ef$1kfrj$1@dont-email.me>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <f4d6e469-4962-431d-bdc3-97c8ab4e4ed7n@googlegroups.com>
Subject: Re: Meter accuracy specification question
From: palliso...@gmail.com (Phil Allison)
Injection-Date: Sun, 02 Oct 2022 05:50:45 +0000
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Received-Bytes: 1575
 by: Phil Allison - Sun, 2 Oct 2022 05:50 UTC

Jan Panteltje wrote:
------------------------------------
> On a sunny day (Sat, 1 Oct 2022 22:36:16 -0400) it happened John S

>
> >USB tester says "Voltage measurement accuracy: ± (0.8% + 4 words)"
> >
> >What does the "4 words" mean?
> >
> >Thanks.
>
> Goolge translate from Chinese?

** The idiot OP will never give us enough info to know that.

........Phil

Re: Meter accuracy specification question

<thbafv$1koft$1@dont-email.me>

  copy mid

https://www.novabbs.com/tech/article-flat.php?id=107176&group=sci.electronics.design#107176

  copy link   Newsgroups: sci.electronics.design
Path: i2pn2.org!i2pn.org!eternal-september.org!reader01.eternal-september.org!.POSTED!not-for-mail
From: blockedo...@foo.invalid (Don Y)
Newsgroups: sci.electronics.design
Subject: Re: Meter accuracy specification question
Date: Sat, 1 Oct 2022 23:18:27 -0700
Organization: A noiseless patient Spider
Lines: 14
Message-ID: <thbafv$1koft$1@dont-email.me>
References: <thatf8$1aocf$1@dont-email.me>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
Injection-Date: Sun, 2 Oct 2022 06:18:40 -0000 (UTC)
Injection-Info: reader01.eternal-september.org; posting-host="a16b7b18ef67b140d6fecac2869edff9";
logging-data="1729021"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19EUhooOOvXM3XFLqPM3yym"
User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:102.0) Gecko/20100101
Thunderbird/102.2.2
Cancel-Lock: sha1:OVkJ6NXNoTDmF8hR807514gNqrk=
Content-Language: en-US
In-Reply-To: <thatf8$1aocf$1@dont-email.me>
 by: Don Y - Sun, 2 Oct 2022 06:18 UTC

On 10/1/2022 7:36 PM, John S wrote:
> USB tester says "Voltage measurement accuracy: ± (0.8% + 4 words)"
>
> What does the "4 words" mean?

Perhaps it is meant to be read as "(0.8% + 4) words" -- i.e., a percentage
of value plus a fixed uncertainty "count" of 4, expressed as words (instead
of "bytes").

One would need to know what the range of measurements might be to infer
a likely implementation (e.g., if the measurement is "16 bits" it
would suggest "words")

Re: Meter accuracy specification question

<thbssb$1mbu1$1@dont-email.me>

  copy mid

https://www.novabbs.com/tech/article-flat.php?id=107179&group=sci.electronics.design#107179

  copy link   Newsgroups: sci.electronics.design
Path: i2pn2.org!i2pn.org!aioe.org!eternal-september.org!reader01.eternal-september.org!.POSTED!not-for-mail
From: Soph...@invalid.org (John S)
Newsgroups: sci.electronics.design
Subject: Re: Meter accuracy specification question
Date: Sun, 2 Oct 2022 07:32:26 -0400
Organization: A noiseless patient Spider
Lines: 22
Message-ID: <thbssb$1mbu1$1@dont-email.me>
References: <thatf8$1aocf$1@dont-email.me> <thb6ef$1kfrj$1@dont-email.me>
<f4d6e469-4962-431d-bdc3-97c8ab4e4ed7n@googlegroups.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
Injection-Date: Sun, 2 Oct 2022 11:32:27 -0000 (UTC)
Injection-Info: reader01.eternal-september.org; posting-host="0476b592884bce942c9ce084b0a652a1";
logging-data="1781697"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/94iIFgk2o2xivTwtzadHV"
User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:91.0) Gecko/20100101
Thunderbird/91.13.1
Cancel-Lock: sha1:hUDI/msm3C1uq2JTVm+tX1PREaU=
Content-Language: en-US
In-Reply-To: <f4d6e469-4962-431d-bdc3-97c8ab4e4ed7n@googlegroups.com>
 by: John S - Sun, 2 Oct 2022 11:32 UTC

On 10/2/2022 1:50 AM, Phil Allison wrote:
> Jan Panteltje wrote:
> ------------------------------------
>> On a sunny day (Sat, 1 Oct 2022 22:36:16 -0400) it happened John S
>
>>
>>> USB tester says "Voltage measurement accuracy: ± (0.8% + 4 words)"
>>>
>>> What does the "4 words" mean?
>>>
>>> Thanks.
>>
>> Goolge translate from Chinese?
>
> ** The idiot OP will never give us enough info to know that.
>
>
> .......Phil

From one idiot to the other - here is all the available info:
<https://smile.amazon.com/MakerHawk-3-7-30V-Voltage-Multimeter-Voltmeter/dp/B07FMQZVW2/>

Re: Meter accuracy specification question

<thbtkk$1mbu1$2@dont-email.me>

  copy mid

https://www.novabbs.com/tech/article-flat.php?id=107180&group=sci.electronics.design#107180

  copy link   Newsgroups: sci.electronics.design
Path: i2pn2.org!i2pn.org!eternal-september.org!reader01.eternal-september.org!.POSTED!not-for-mail
From: Soph...@invalid.org (John S)
Newsgroups: sci.electronics.design
Subject: Re: Meter accuracy specification question
Date: Sun, 2 Oct 2022 07:45:24 -0400
Organization: A noiseless patient Spider
Lines: 17
Message-ID: <thbtkk$1mbu1$2@dont-email.me>
References: <thatf8$1aocf$1@dont-email.me> <thbafv$1koft$1@dont-email.me>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
Injection-Date: Sun, 2 Oct 2022 11:45:24 -0000 (UTC)
Injection-Info: reader01.eternal-september.org; posting-host="0476b592884bce942c9ce084b0a652a1";
logging-data="1781697"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX190TaD5jRdwf1gNOeAJhOPH"
User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:91.0) Gecko/20100101
Thunderbird/91.13.1
Cancel-Lock: sha1:hrvUhuZJXIPfpnHxtZxkc9VEdPI=
In-Reply-To: <thbafv$1koft$1@dont-email.me>
Content-Language: en-US
 by: John S - Sun, 2 Oct 2022 11:45 UTC

On 10/2/2022 2:18 AM, Don Y wrote:
> On 10/1/2022 7:36 PM, John S wrote:
>> USB tester says "Voltage measurement accuracy: ± (0.8% + 4 words)"
>>
>> What does the "4 words" mean?
>
> Perhaps it is meant to be read as "(0.8% + 4) words" -- i.e., a percentage
> of value plus a fixed uncertainty "count" of 4, expressed as words (instead
> of "bytes").
>
> One would need to know what the range of measurements might be to infer
> a likely implementation (e.g., if the measurement is "16 bits" it
> would suggest "words")
>
>

<https://smile.amazon.com/MakerHawk-3-7-30V-Voltage-Multimeter-Voltmeter/dp/B07FMQZVW2/>

Re: Meter accuracy specification question

<thc2r3$1muf9$1@dont-email.me>

  copy mid

https://www.novabbs.com/tech/article-flat.php?id=107183&group=sci.electronics.design#107183

  copy link   Newsgroups: sci.electronics.design
Path: i2pn2.org!i2pn.org!aioe.org!eternal-september.org!reader01.eternal-september.org!.POSTED!not-for-mail
From: kraken.s...@gmail.com (TTman)
Newsgroups: sci.electronics.design
Subject: Re: Meter accuracy specification question
Date: Sun, 2 Oct 2022 14:14:10 +0100
Organization: A noiseless patient Spider
Lines: 13
Message-ID: <thc2r3$1muf9$1@dont-email.me>
References: <thatf8$1aocf$1@dont-email.me>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
Injection-Date: Sun, 2 Oct 2022 13:14:11 -0000 (UTC)
Injection-Info: reader01.eternal-september.org; posting-host="5ed8b9c18a7b7fc00bf72d0bb8da9c9b";
logging-data="1800681"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+tKkV2Oo4C4qW7aSl2oenm"
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101
Thunderbird/102.3.1
Cancel-Lock: sha1:HQvg/OKVzQfXF5Y+k+UMMxg6y6U=
X-Antivirus-Status: Clean
In-Reply-To: <thatf8$1aocf$1@dont-email.me>
X-Antivirus: Avast (VPS 221002-2, 10/2/2022), Outbound message
 by: TTman - Sun, 2 Oct 2022 13:14 UTC

On 02/10/2022 03:36, John S wrote:
> USB tester says "Voltage measurement accuracy: ± (0.8% + 4 words)"
>
> What does the "4 words" mean?
>
> Thanks.
Ignore it. google translate garbage. Probably meant 4 counts. Who cares ?

--
This email has been checked for viruses by Avast antivirus software.
www.avast.com

Re: Meter accuracy specification question

<thcjaj$1ofcm$1@news.eternal-september.org>

  copy mid

https://www.novabbs.com/tech/article-flat.php?id=107194&group=sci.electronics.design#107194

  copy link   Newsgroups: sci.electronics.design
Path: i2pn2.org!i2pn.org!aioe.org!eternal-september.org!reader01.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: ehs...@verizon.net (ehsjr)
Newsgroups: sci.electronics.design
Subject: Re: Meter accuracy specification question
Date: Sun, 2 Oct 2022 13:55:31 -0400
Organization: A noiseless patient Spider
Lines: 18
Message-ID: <thcjaj$1ofcm$1@news.eternal-september.org>
References: <thatf8$1aocf$1@dont-email.me>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
Injection-Date: Sun, 2 Oct 2022 17:55:31 -0000 (UTC)
Injection-Info: news.eternal-september.org; posting-host="45c5cecee43bb396d947e366dbec18e2";
logging-data="1850774"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18la7fXU9XfRlBRCoHT9aGt"
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101
Thunderbird/102.3.1
Cancel-Lock: sha1:rtow2aZ8IQ2AvkCKTD2TOKz7wKc=
In-Reply-To: <thatf8$1aocf$1@dont-email.me>
Content-Language: en-US
 by: ehsjr - Sun, 2 Oct 2022 17:55 UTC

On 10/1/2022 10:36 PM, John S wrote:
> USB tester says "Voltage measurement accuracy: ± (0.8% + 4 words)"
>
> What does the "4 words" mean?
>
> Thanks.

The term "words" is incorrect - it should be "digits".
See below.

Elsewhere at the website you posted it says
"Voltage measurement accuracy: ± (0.8% + 4 digits)"
To see the above, go to that website, scroll down
to Product guides and documents then click on
User Guide (PDF). See the technical parameters.

Ed

Re: Meter accuracy specification question

<thej6u$26efi$1@dont-email.me>

  copy mid

https://www.novabbs.com/tech/article-flat.php?id=107231&group=sci.electronics.design#107231

  copy link   Newsgroups: sci.electronics.design
Path: i2pn2.org!i2pn.org!eternal-september.org!reader01.eternal-september.org!.POSTED!not-for-mail
From: Soph...@invalid.org (John S)
Newsgroups: sci.electronics.design
Subject: Re: Meter accuracy specification question
Date: Mon, 3 Oct 2022 08:05:49 -0400
Organization: A noiseless patient Spider
Lines: 23
Message-ID: <thej6u$26efi$1@dont-email.me>
References: <thatf8$1aocf$1@dont-email.me>
<thcjaj$1ofcm$1@news.eternal-september.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
Injection-Date: Mon, 3 Oct 2022 12:05:50 -0000 (UTC)
Injection-Info: reader01.eternal-september.org; posting-host="6551479598fe4c5f31dec7af21c621c0";
logging-data="2308594"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+6iMJdLDyZAeWkGAF6h/jo"
User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:91.0) Gecko/20100101
Thunderbird/91.13.1
Cancel-Lock: sha1:ne0FXskLqevO+te6wSsfg00Kc4Q=
Content-Language: en-US
In-Reply-To: <thcjaj$1ofcm$1@news.eternal-september.org>
 by: John S - Mon, 3 Oct 2022 12:05 UTC

On 10/2/2022 1:55 PM, ehsjr wrote:
> On 10/1/2022 10:36 PM, John S wrote:
>> USB tester says "Voltage measurement accuracy: ± (0.8% + 4 words)"
>>
>> What does the "4 words" mean?
>>
>> Thanks.
>
> The term "words" is incorrect - it should be "digits".
> See below.
>
> Elsewhere at the website you posted it says
> "Voltage measurement accuracy: ± (0.8% + 4 digits)"
> To see the above, go to that website, scroll down
> to Product guides and documents then click on
> User Guide (PDF). See the technical parameters.
>
> Ed
>

I missed seeing that. Thanks much for pointing it out.

Cheers.

Re: Meter accuracy specification question

<a66c6ea7-1bfe-4be1-8832-f38e2b1b1e7dn@googlegroups.com>

  copy mid

https://www.novabbs.com/tech/article-flat.php?id=107235&group=sci.electronics.design#107235

  copy link   Newsgroups: sci.electronics.design
X-Received: by 2002:a05:620a:2495:b0:6ce:bbe6:5bb4 with SMTP id i21-20020a05620a249500b006cebbe65bb4mr13688195qkn.674.1664805022845;
Mon, 03 Oct 2022 06:50:22 -0700 (PDT)
X-Received: by 2002:ac8:4e8e:0:b0:35d:5235:3478 with SMTP id
14-20020ac84e8e000000b0035d52353478mr15787634qtp.373.1664805022444; Mon, 03
Oct 2022 06:50:22 -0700 (PDT)
Path: i2pn2.org!i2pn.org!usenet.blueworldhosting.com!feed1.usenet.blueworldhosting.com!peer02.iad!feed-me.highwinds-media.com!news.highwinds-media.com!news-out.google.com!nntp.google.com!postnews.google.com!google-groups.googlegroups.com!not-for-mail
Newsgroups: sci.electronics.design
Date: Mon, 3 Oct 2022 06:50:22 -0700 (PDT)
In-Reply-To: <thej6u$26efi$1@dont-email.me>
Injection-Info: google-groups.googlegroups.com; posting-host=65.207.89.54; posting-account=I-_H_woAAAA9zzro6crtEpUAyIvzd19b
NNTP-Posting-Host: 65.207.89.54
References: <thatf8$1aocf$1@dont-email.me> <thcjaj$1ofcm$1@news.eternal-september.org>
<thej6u$26efi$1@dont-email.me>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <a66c6ea7-1bfe-4be1-8832-f38e2b1b1e7dn@googlegroups.com>
Subject: Re: Meter accuracy specification question
From: gnuarm.d...@gmail.com (Ricky)
Injection-Date: Mon, 03 Oct 2022 13:50:22 +0000
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Received-Bytes: 2277
 by: Ricky - Mon, 3 Oct 2022 13:50 UTC

On Monday, October 3, 2022 at 8:05:59 AM UTC-4, John S wrote:
> On 10/2/2022 1:55 PM, ehsjr wrote:
> > On 10/1/2022 10:36 PM, John S wrote:
> >> USB tester says "Voltage measurement accuracy: ± (0.8% + 4 words)"
> >>
> >> What does the "4 words" mean?
> >>
> >> Thanks.
> >
> > The term "words" is incorrect - it should be "digits".
> > See below.
> >
> > Elsewhere at the website you posted it says
> > "Voltage measurement accuracy: ± (0.8% + 4 digits)"
> > To see the above, go to that website, scroll down
> > to Product guides and documents then click on
> > User Guide (PDF). See the technical parameters.
> >
> > Ed
> >
> I missed seeing that. Thanks much for pointing it out.

Shouldn't this have been obvious? This is the way meters are spec'd, a percentage plus some number of counts.

Has anyone seen a meter specified differently?

--

Rick C.

- Get 1,000 miles of free Supercharging
- Tesla referral code - https://ts.la/richard11209

Re: Meter accuracy specification question

<58d6986f-9942-40dd-bda9-d8bdc3e67fa9n@googlegroups.com>

  copy mid

https://www.novabbs.com/tech/article-flat.php?id=107243&group=sci.electronics.design#107243

  copy link   Newsgroups: sci.electronics.design
X-Received: by 2002:ad4:5b8e:0:b0:4af:91fe:6923 with SMTP id 14-20020ad45b8e000000b004af91fe6923mr17191344qvp.42.1664818333316;
Mon, 03 Oct 2022 10:32:13 -0700 (PDT)
X-Received: by 2002:ac8:5a8c:0:b0:35b:b2f7:7e96 with SMTP id
c12-20020ac85a8c000000b0035bb2f77e96mr16931875qtc.659.1664818333014; Mon, 03
Oct 2022 10:32:13 -0700 (PDT)
Path: i2pn2.org!i2pn.org!usenet.blueworldhosting.com!feed1.usenet.blueworldhosting.com!peer02.iad!feed-me.highwinds-media.com!news.highwinds-media.com!news-out.google.com!nntp.google.com!postnews.google.com!google-groups.googlegroups.com!not-for-mail
Newsgroups: sci.electronics.design
Date: Mon, 3 Oct 2022 10:32:12 -0700 (PDT)
In-Reply-To: <thatf8$1aocf$1@dont-email.me>
Injection-Info: google-groups.googlegroups.com; posting-host=2601:5cc:4701:5250:5cff:5440:1423:884a;
posting-account=iGtwSwoAAABNNwPORfvAs6OM4AR9GRHt
NNTP-Posting-Host: 2601:5cc:4701:5250:5cff:5440:1423:884a
References: <thatf8$1aocf$1@dont-email.me>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <58d6986f-9942-40dd-bda9-d8bdc3e67fa9n@googlegroups.com>
Subject: Re: Meter accuracy specification question
From: bloggs.f...@gmail.com (Fred Bloggs)
Injection-Date: Mon, 03 Oct 2022 17:32:13 +0000
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Received-Bytes: 1799
 by: Fred Bloggs - Mon, 3 Oct 2022 17:32 UTC

On Saturday, October 1, 2022 at 10:37:10 PM UTC-4, John S wrote:
> USB tester says "Voltage measurement accuracy: ± (0.8% + 4 words)"
>
> What does the "4 words" mean?

Word almost certainly means the resolution quantization which they say is 0..01V.

>
> Thanks.

Forget that mundane nonsense. The real question is what is the Rui Deng precision sampling algorithm, and how does it extract 0.8% accuracy, a 7.8x improvement (hmmm- that number looks familiar), from a 4-bit A/D conversion.

I wonder if they're talking about this woman:
https://www.dr1117.com/

Re: Meter accuracy specification question

<d0tmjhl1fclnlu56o2ilg4e30vbcoi1o9k@4ax.com>

  copy mid

https://www.novabbs.com/tech/article-flat.php?id=107260&group=sci.electronics.design#107260

  copy link   Newsgroups: sci.electronics.design
Path: i2pn2.org!i2pn.org!usenet.blueworldhosting.com!feed1.usenet.blueworldhosting.com!peer03.iad!feed-me.highwinds-media.com!news.highwinds-media.com!feeder.usenetexpress.com!tr1.iad1.usenetexpress.com!69.80.99.23.MISMATCH!Xl.tags.giganews.com!local-2.nntp.ord.giganews.com!nntp.supernews.com!news.supernews.com.POSTED!not-for-mail
NNTP-Posting-Date: Mon, 03 Oct 2022 23:45:36 +0000
From: jlar...@highlandSNIPMEtechnology.com (John Larkin)
Newsgroups: sci.electronics.design
Subject: Re: Meter accuracy specification question
Date: Mon, 03 Oct 2022 16:45:38 -0700
Organization: Highland Tech
Reply-To: xx@yy.com
Message-ID: <d0tmjhl1fclnlu56o2ilg4e30vbcoi1o9k@4ax.com>
References: <thatf8$1aocf$1@dont-email.me> <58d6986f-9942-40dd-bda9-d8bdc3e67fa9n@googlegroups.com>
X-Newsreader: Forte Agent 3.1/32.783
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 8bit
Lines: 17
X-Trace: sv3-5ZNW87+tt0CpYpJfv4yFPPpPTDfSsatsYJ2oavQRyShhzvf9Nj830egd3twKvAGNqs7K6VHxmVSNc+5!YxsjXCuT38EbI0f8sAWsFS8s4DE3/bb+SdzADGMvLUJbzP/f4pC+D7GEhG/xw1CeMhnpKt9gTuEn!MQTk9w==
X-Complaints-To: www.supernews.com/docs/abuse.html
X-DMCA-Complaints-To: www.supernews.com/docs/dmca.html
X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers
X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly
X-Postfilter: 1.3.40
X-Received-Bytes: 1897
 by: John Larkin - Mon, 3 Oct 2022 23:45 UTC

On Mon, 3 Oct 2022 10:32:12 -0700 (PDT), Fred Bloggs
<bloggs.fredbloggs.fred@gmail.com> wrote:

>On Saturday, October 1, 2022 at 10:37:10 PM UTC-4, John S wrote:
>> USB tester says "Voltage measurement accuracy: ± (0.8% + 4 words)"
>>
>> What does the "4 words" mean?
>
>Word almost certainly means the resolution quantization which they say is 0.01V.
>
>>
>> Thanks.
>
>Forget that mundane nonsense. The real question is what is the Rui Deng precision sampling algorithm, and how does it extract 0.8% accuracy, a 7.8x improvement (hmmm- that number looks familiar), from a 4-bit A/D conversion.

Dither.

Re: Meter accuracy specification question

<2c4b7e99-0e7d-44ea-b648-0d6268ae16a9n@googlegroups.com>

  copy mid

https://www.novabbs.com/tech/article-flat.php?id=107274&group=sci.electronics.design#107274

  copy link   Newsgroups: sci.electronics.design
X-Received: by 2002:a05:6214:c4b:b0:4b1:9e07:388 with SMTP id r11-20020a0562140c4b00b004b19e070388mr4945959qvj.76.1664890572044;
Tue, 04 Oct 2022 06:36:12 -0700 (PDT)
X-Received: by 2002:a0c:9a0d:0:b0:4b1:982e:96d4 with SMTP id
p13-20020a0c9a0d000000b004b1982e96d4mr5590113qvd.114.1664890571879; Tue, 04
Oct 2022 06:36:11 -0700 (PDT)
Path: i2pn2.org!i2pn.org!usenet.blueworldhosting.com!feed1.usenet.blueworldhosting.com!peer03.iad!feed-me.highwinds-media.com!news.highwinds-media.com!news-out.google.com!nntp.google.com!postnews.google.com!google-groups.googlegroups.com!not-for-mail
Newsgroups: sci.electronics.design
Date: Tue, 4 Oct 2022 06:36:11 -0700 (PDT)
In-Reply-To: <d0tmjhl1fclnlu56o2ilg4e30vbcoi1o9k@4ax.com>
Injection-Info: google-groups.googlegroups.com; posting-host=2601:5cc:4701:5250:59b3:10ff:8fcd:6642;
posting-account=iGtwSwoAAABNNwPORfvAs6OM4AR9GRHt
NNTP-Posting-Host: 2601:5cc:4701:5250:59b3:10ff:8fcd:6642
References: <thatf8$1aocf$1@dont-email.me> <58d6986f-9942-40dd-bda9-d8bdc3e67fa9n@googlegroups.com>
<d0tmjhl1fclnlu56o2ilg4e30vbcoi1o9k@4ax.com>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <2c4b7e99-0e7d-44ea-b648-0d6268ae16a9n@googlegroups.com>
Subject: Re: Meter accuracy specification question
From: bloggs.f...@gmail.com (Fred Bloggs)
Injection-Date: Tue, 04 Oct 2022 13:36:12 +0000
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Received-Bytes: 2503
 by: Fred Bloggs - Tue, 4 Oct 2022 13:36 UTC

On Monday, October 3, 2022 at 7:45:47 PM UTC-4, John Larkin wrote:
> On Mon, 3 Oct 2022 10:32:12 -0700 (PDT), Fred Bloggs
> <bloggs.fred...@gmail.com> wrote:
>
> >On Saturday, October 1, 2022 at 10:37:10 PM UTC-4, John S wrote:
> >> USB tester says "Voltage measurement accuracy: ą (0.8% + 4 words)"
> >>
> >> What does the "4 words" mean?
> >
> >Word almost certainly means the resolution quantization which they say is 0.01V.
> >
> >>
> >> Thanks.
> >
> >Forget that mundane nonsense. The real question is what is the Rui Deng precision sampling algorithm, and how does it extract 0.8% accuracy, a 7.8x improvement (hmmm- that number looks familiar), from a 4-bit A/D conversion.
> Dither.

A quick search of some of these SOCs ( dunno if they're still called that)- having 4-bit A/D with sampling rates over 2 GHz. So oversampling is definitely involved, and there's maybe that RIS ( random interleaved sampling ) technique used too . Whatever their particular algorithm, it falls under the rubric of 'probabilistic' precision sampling- and it looks they're trying to keep analog completely out of it.

Re: Meter accuracy specification question

<89ffeb39-47e4-45db-806d-2a531913a4c3n@googlegroups.com>

  copy mid

https://www.novabbs.com/tech/article-flat.php?id=107275&group=sci.electronics.design#107275

  copy link   Newsgroups: sci.electronics.design
X-Received: by 2002:a05:622a:608:b0:35d:54e0:1382 with SMTP id z8-20020a05622a060800b0035d54e01382mr19274895qta.432.1664892492357;
Tue, 04 Oct 2022 07:08:12 -0700 (PDT)
X-Received: by 2002:a05:6214:1cc8:b0:4af:649f:dd57 with SMTP id
g8-20020a0562141cc800b004af649fdd57mr19916688qvd.81.1664892492176; Tue, 04
Oct 2022 07:08:12 -0700 (PDT)
Path: i2pn2.org!i2pn.org!usenet.blueworldhosting.com!feed1.usenet.blueworldhosting.com!peer03.iad!feed-me.highwinds-media.com!news.highwinds-media.com!news-out.google.com!nntp.google.com!postnews.google.com!google-groups.googlegroups.com!not-for-mail
Newsgroups: sci.electronics.design
Date: Tue, 4 Oct 2022 07:08:12 -0700 (PDT)
In-Reply-To: <d0tmjhl1fclnlu56o2ilg4e30vbcoi1o9k@4ax.com>
Injection-Info: google-groups.googlegroups.com; posting-host=2601:5cc:4701:5250:59b3:10ff:8fcd:6642;
posting-account=iGtwSwoAAABNNwPORfvAs6OM4AR9GRHt
NNTP-Posting-Host: 2601:5cc:4701:5250:59b3:10ff:8fcd:6642
References: <thatf8$1aocf$1@dont-email.me> <58d6986f-9942-40dd-bda9-d8bdc3e67fa9n@googlegroups.com>
<d0tmjhl1fclnlu56o2ilg4e30vbcoi1o9k@4ax.com>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <89ffeb39-47e4-45db-806d-2a531913a4c3n@googlegroups.com>
Subject: Re: Meter accuracy specification question
From: bloggs.f...@gmail.com (Fred Bloggs)
Injection-Date: Tue, 04 Oct 2022 14:08:12 +0000
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Received-Bytes: 2247
 by: Fred Bloggs - Tue, 4 Oct 2022 14:08 UTC

On Monday, October 3, 2022 at 7:45:47 PM UTC-4, John Larkin wrote:
> On Mon, 3 Oct 2022 10:32:12 -0700 (PDT), Fred Bloggs
> <bloggs.fred...@gmail.com> wrote:
>
> >On Saturday, October 1, 2022 at 10:37:10 PM UTC-4, John S wrote:
> >> USB tester says "Voltage measurement accuracy: ą (0.8% + 4 words)"
> >>
> >> What does the "4 words" mean?
> >
> >Word almost certainly means the resolution quantization which they say is 0.01V.
> >
> >>
> >> Thanks.
> >
> >Forget that mundane nonsense. The real question is what is the Rui Deng precision sampling algorithm, and how does it extract 0.8% accuracy, a 7.8x improvement (hmmm- that number looks familiar), from a 4-bit A/D conversion.
> Dither.

In that accuracy spec of 0.8% + 4 words- I'm pretty sure these geeks use "+" to mean "or." So maybe it should be read the larger of 0.8% FS or 40 mV (4 x 10 mV)

Re: Meter accuracy specification question

<ba143384-0c3c-4715-8cbc-67dd38632f92n@googlegroups.com>

  copy mid

https://www.novabbs.com/tech/article-flat.php?id=107278&group=sci.electronics.design#107278

  copy link   Newsgroups: sci.electronics.design
X-Received: by 2002:a05:622a:138b:b0:35b:b619:b87d with SMTP id o11-20020a05622a138b00b0035bb619b87dmr19698579qtk.146.1664896515722;
Tue, 04 Oct 2022 08:15:15 -0700 (PDT)
X-Received: by 2002:a05:6214:f2b:b0:4b1:7b01:6de2 with SMTP id
iw11-20020a0562140f2b00b004b17b016de2mr11410547qvb.122.1664896515439; Tue, 04
Oct 2022 08:15:15 -0700 (PDT)
Path: i2pn2.org!i2pn.org!usenet.blueworldhosting.com!feed1.usenet.blueworldhosting.com!peer03.iad!feed-me.highwinds-media.com!news.highwinds-media.com!news-out.google.com!nntp.google.com!postnews.google.com!google-groups.googlegroups.com!not-for-mail
Newsgroups: sci.electronics.design
Date: Tue, 4 Oct 2022 08:15:15 -0700 (PDT)
In-Reply-To: <89ffeb39-47e4-45db-806d-2a531913a4c3n@googlegroups.com>
Injection-Info: google-groups.googlegroups.com; posting-host=76.76.25.6; posting-account=I-_H_woAAAA9zzro6crtEpUAyIvzd19b
NNTP-Posting-Host: 76.76.25.6
References: <thatf8$1aocf$1@dont-email.me> <58d6986f-9942-40dd-bda9-d8bdc3e67fa9n@googlegroups.com>
<d0tmjhl1fclnlu56o2ilg4e30vbcoi1o9k@4ax.com> <89ffeb39-47e4-45db-806d-2a531913a4c3n@googlegroups.com>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <ba143384-0c3c-4715-8cbc-67dd38632f92n@googlegroups.com>
Subject: Re: Meter accuracy specification question
From: gnuarm.d...@gmail.com (Ricky)
Injection-Date: Tue, 04 Oct 2022 15:15:15 +0000
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Received-Bytes: 2692
 by: Ricky - Tue, 4 Oct 2022 15:15 UTC

On Tuesday, October 4, 2022 at 10:08:16 AM UTC-4, Fred Bloggs wrote:
> On Monday, October 3, 2022 at 7:45:47 PM UTC-4, John Larkin wrote:
> > On Mon, 3 Oct 2022 10:32:12 -0700 (PDT), Fred Bloggs
> > <bloggs.fred...@gmail.com> wrote:
> >
> > >On Saturday, October 1, 2022 at 10:37:10 PM UTC-4, John S wrote:
> > >> USB tester says "Voltage measurement accuracy: ą (0.8% + 4 words)"
> > >>
> > >> What does the "4 words" mean?
> > >
> > >Word almost certainly means the resolution quantization which they say is 0.01V.
> > >
> > >>
> > >> Thanks.
> > >
> > >Forget that mundane nonsense. The real question is what is the Rui Deng precision sampling algorithm, and how does it extract 0.8% accuracy, a 7.8x improvement (hmmm- that number looks familiar), from a 4-bit A/D conversion.
> > Dither.
> In that accuracy spec of 0.8% + 4 words- I'm pretty sure these geeks use "+" to mean "or." So maybe it should be read the larger of 0.8% FS or 40 mV (4 x 10 mV)

"+" does not mean "or". It means PLUS. The total error can amount to 0.8% of full scale PLUS 4 counts.

That is a very standard way to specify error ranges because of different error sources.

--

Rick C.

+ Get 1,000 miles of free Supercharging
+ Tesla referral code - https://ts.la/richard11209

Re: Meter accuracy specification question

<dc96d542-82c8-493b-b172-f5672a16c795n@googlegroups.com>

  copy mid

https://www.novabbs.com/tech/article-flat.php?id=107284&group=sci.electronics.design#107284

  copy link   Newsgroups: sci.electronics.design
X-Received: by 2002:ac8:5985:0:b0:35b:ba8c:d522 with SMTP id e5-20020ac85985000000b0035bba8cd522mr20228620qte.213.1664900338164;
Tue, 04 Oct 2022 09:18:58 -0700 (PDT)
X-Received: by 2002:a37:ad0a:0:b0:6ce:1769:6f51 with SMTP id
f10-20020a37ad0a000000b006ce17696f51mr17591461qkm.522.1664900338031; Tue, 04
Oct 2022 09:18:58 -0700 (PDT)
Path: i2pn2.org!i2pn.org!usenet.blueworldhosting.com!feed1.usenet.blueworldhosting.com!peer02.iad!feed-me.highwinds-media.com!news.highwinds-media.com!news-out.google.com!nntp.google.com!postnews.google.com!google-groups.googlegroups.com!not-for-mail
Newsgroups: sci.electronics.design
Date: Tue, 4 Oct 2022 09:18:57 -0700 (PDT)
In-Reply-To: <2c4b7e99-0e7d-44ea-b648-0d6268ae16a9n@googlegroups.com>
Injection-Info: google-groups.googlegroups.com; posting-host=94.145.249.187; posting-account=mW5JKwkAAAAMyuWOVeLp8yffyAkVx0g7
NNTP-Posting-Host: 94.145.249.187
References: <thatf8$1aocf$1@dont-email.me> <58d6986f-9942-40dd-bda9-d8bdc3e67fa9n@googlegroups.com>
<d0tmjhl1fclnlu56o2ilg4e30vbcoi1o9k@4ax.com> <2c4b7e99-0e7d-44ea-b648-0d6268ae16a9n@googlegroups.com>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <dc96d542-82c8-493b-b172-f5672a16c795n@googlegroups.com>
Subject: Re: Meter accuracy specification question
From: langw...@fonz.dk (Lasse Langwadt Christensen)
Injection-Date: Tue, 04 Oct 2022 16:18:58 +0000
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Received-Bytes: 2744
 by: Lasse Langwadt Chris - Tue, 4 Oct 2022 16:18 UTC

tirsdag den 4. oktober 2022 kl. 15.36.16 UTC+2 skrev Fred Bloggs:
> On Monday, October 3, 2022 at 7:45:47 PM UTC-4, John Larkin wrote:
> > On Mon, 3 Oct 2022 10:32:12 -0700 (PDT), Fred Bloggs
> > <bloggs.fred...@gmail.com> wrote:
> >
> > >On Saturday, October 1, 2022 at 10:37:10 PM UTC-4, John S wrote:
> > >> USB tester says "Voltage measurement accuracy: ą (0.8% + 4 words)"
> > >>
> > >> What does the "4 words" mean?
> > >
> > >Word almost certainly means the resolution quantization which they say is 0.01V.
> > >
> > >>
> > >> Thanks.
> > >
> > >Forget that mundane nonsense. The real question is what is the Rui Deng precision sampling algorithm, and how does it extract 0.8% accuracy, a 7.8x improvement (hmmm- that number looks familiar), from a 4-bit A/D conversion.
> > Dither.
> A quick search of some of these SOCs ( dunno if they're still called that)- having 4-bit A/D with sampling rates over 2 GHz. So oversampling is definitely involved, and there's maybe that RIS ( random interleaved sampling ) technique used too . Whatever their particular algorithm, it falls under the rubric of 'probabilistic' precision sampling- and it looks they're trying to keep analog completely out of it.

what SOCs have a 4bit 2GHz converter?

almost certainly some MCU with a 10-12bit adc at maybe a MHz

1
server_pubkey.txt

rocksolid light 0.9.81
clearnet tor