FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups 
 ProfileProfile   PreferencesPreferences   Log in to check your private messagesLog in to check your private messages   Log inLog in 
Forum index » Electronix » Equipment
10m-10cm distance measurement with 1cm accuracy at a rate of 50Hz
Post new topic   Reply to topic Page 1 of 19 [273 Posts] View previous topic :: View next topic
Goto page:  1, 2, 3, ..., 17, 18, 19 Next
Author Message
Jim Yanik
electronics forum Guru


Joined: 01 May 2005
Posts: 635

PostPosted: Thu Mar 24, 2005 6:59 pm    Post subject: Re: WTB DM44 for Tektronix 465B Oscilliscope Reply with quote

Sam Jacobson <jacobson98@earthlink.net> wrote in
news:u8bv11lp1kn3g4chafdktcu6plg85ujf9m@4ax.com:

Quote:
Dear all,

I am looking for a DM44 for my Tektronix 465B oscilloscope. If
anyone has one for sale, or know where I might get one, I would
appreciate you letting me know.

Thanks!

Sam


If you have no experience in installing one,then you can possibly damage
your scope to where it's not worth anything anymore.

You are also going to need the proper ribbon cable set for the DM44 option.
And the DM44 service manual!!

I would not advise it.Buy or trade for a complete 465BDM44.

(21.5 years at TEK service centers;repair and cal of scopes,T&M,and TV
products.)
--
Jim Yanik
jyanik
at
kua.net
Back to top
Jim Adney
electronics forum Guru Wannabe


Joined: 02 May 2005
Posts: 164

PostPosted: Thu Mar 24, 2005 6:59 pm    Post subject: Re: WTB DM44 for Tektronix 465B Oscilliscope Reply with quote

On Fri, 25 Feb 2005 22:57:54 GMT Sam Jacobson
<jacobson98@earthlink.net> wrote:

Quote:
I am looking for a DM44 for my Tektronix 465B oscilloscope. If
anyone has one for sale, or know where I might get one, I would
appreciate you letting me know.

When I bought my 465B a number of years ago, I started thinking the
same thing. Fortunately, I had the complete service manual and I was
able to see how much work it would be to install, and I could also see
that it would make the scope much harder to get into if it ever needed
service.

Finally, I realized that most if its functions could be done better
with the newer instruments I already have. Do I gave up on this quest
and have never regretted it.

If you really want the DM44, you'd be much better off buying a
complete 465B/DM44 and selling your 465B.

BTW, the 465B is still a great scope. ;-)

-
-----------------------------------------------
Jim Adney jadney@vwtype3.org
Madison, WI 53711 USA
-----------------------------------------------
Back to top
TekMan
electronics forum addict


Joined: 28 Apr 2005
Posts: 85

PostPosted: Thu Mar 24, 2005 6:59 pm    Post subject: Re: WTB DM44 for Tektronix 465B Oscilliscope Reply with quote

I am not shure if the OP is just willing to replace the DM44 on his
465B . Or if he is going to install one on his 465B that is right now
without the dmm.

In the latter case, this would also mean some metal cut ourt in the
housing of the 465B scope. Hard to do withourt proper tools.

I'd go with Jim recommendation: Buy a complete 465B/DM44.

just my 2cts. ;-)

Andreas
Back to top
Sam Jacobson
electronics forum beginner


Joined: 24 Mar 2005
Posts: 2

PostPosted: Thu Mar 24, 2005 6:59 pm    Post subject: Re: WTB DM44 for Tektronix 465B Oscilliscope Reply with quote

Hello all,

I am sorry for taking so long to get back to you all. It has just
been a rather busy week.

However I wanted to thank you all for the input. And, following the
consensus, I will, hold off buying a DM44 for my 465B as I do not
have the skill to install one, as well as that it simply ounds like a
bad idea trying to add a DM to the Tek.

Thanks everyone. I appreciate the help.

Respectfully,

Sam


On Fri, 25 Feb 2005 22:57:54 GMT, Sam Jacobson
<jacobson98@earthlink.net> wrote:

Quote:
Dear all,

I am looking for a DM44 for my Tektronix 465B oscilloscope. If
anyone has one for sale, or know where I might get one, I would
appreciate you letting me know.

Thanks!

Sam
Back to top
Robert Baer
electronics forum Guru


Joined: 25 Mar 2005
Posts: 1159

PostPosted: Thu Mar 24, 2005 6:59 pm    Post subject: Re: Help on Looser-Take-All / Winner-Take-All circuit Reply with quote

Etantonio wrote:
Quote:

Good morning,
a friend of mine have inserted this post on a Forum I created on my site
www.etantonio.it/en , this is the question :

"Someone knows something about LTA/WTA circuits?
I mean the best approach to the problem,
the best topology and all that can be usefull
to design an accurate and high-speed LTA?"

I don't know the answer, if you know it please post it just following this link:

http://www.etantonio.it/Forum/topic.asp?TOPIC_ID=15

Many Thanks,

Eng. Antonio D'Ottavio
etantonio@etantonio.it
www.etantonio.it/en/

Start with an N-input AND or equivalent.
Each input is driven from the output of a 3-state logic circuit; state
1 = NOT VOTED, state 2 = YES, state 3 = NO; reset all to state 1 at
power up.
The 3-state logic is wired to prevent a voter from changing the vote
after voting; both state 2 and state 3 lock out any inputs.
I designed and built such a beast about 50 years ago using relays;
rather simple.

Alter above suggestion as requirements dictate.
Back to top
Frank S.
electronics forum beginner


Joined: 24 Mar 2005
Posts: 13

PostPosted: Thu Mar 24, 2005 6:59 pm    Post subject: Re: Fluke DMM fading questions Reply with quote

My solution has been to remove the display (carefully) and clean up the
"zebra" strips both top and bottom and clean the display and PCB. Then
replace (try not to put your fingers on the strips)
It has worked for me on a few meters I have played with
Frank
fancy nospam tunes wrote:

Quote:
There are third-party Display Fade Kits for Fluke multimeters. Gives
me an impression, from used/for sale Flukes, that fading is an
inevitable outcome. Any opinion of the the fading/durability of the
Fluke 87, 111, 110, 112, or 81438 models? Are any Fluke multimeters
immune (or less-apt) from display fade?

I'm asking this because Fluke multimeters cost $300-$400 for the new
models replacing the 80 series.

What I want is the Fluke's alert beeps when a new min/max is sensed.
Are there any other brands of multimeters that have this feature?

Why do Fluke multimeter LCD displays fade? Any Fluke model immune?

Back to top
CBFalconer
electronics forum addict


Joined: 03 May 2005
Posts: 67

PostPosted: Thu Mar 24, 2005 6:59 pm    Post subject: Re: Beware of Radio Shack Reply with quote

Vanguard wrote:
Quote:

.... snip ...

I've been at the grocery checkout and they wouldn't ring up an
item at the price they listed on their own shelf, I don't argue,
and I'll leave the whole mess on their counter so they have the
fun of putting it all back and I walk away. There are other
stores. Let them win the argument by losing the sale. Then go
call the State Attorney's Office to find out how to file a
complaint and determine what other action you can pursue against
them.

Many states (in the US at least) have laws that on failure to ring
up the posted or advertised price, the item becomes free. Even
where the law does not cover all of those cases, many firms have
such a policy. The irritating thing is when the checker, who goes
to see if there is such a posting, just rips down the sign and then
tries to deny everything.

--
"I conclude that there are two ways of constructing a software
design: One way is to make it so simple that there are obviously
no deficiencies and the other way is to make it so complicated
that there are no obvious deficiencies." -- C. A. R. Hoare
Back to top
Pete
electronics forum beginner


Joined: 24 Mar 2005
Posts: 1

PostPosted: Thu Mar 24, 2005 6:59 pm    Post subject: Re: Beware of Radio Shack Reply with quote

NEVER heard them require a SS#
Back to top
Melissa
electronics forum beginner


Joined: 24 Mar 2005
Posts: 42

PostPosted: Thu Mar 24, 2005 6:59 pm    Post subject: Re: Beware of Radio Shack Reply with quote

FYI:

"The following is not copyrighted and the Caucus encourages you to make
copies and give them to anyone who unlawfully requests your number. …

"PRIVACY ACT LIMITATIONS ON SOCIAL SECURITY NUMBER USAGE

Since many people objected to extensive loss of privacy which accompanied
the use of computers, Washington responded by passing the "Privacy Act,"
Title 5 of the United States Code Annotated 552(a). It states quite simply
that, "It shall he unlawful… to deny any individual any right, benefit or
privilege provided by law because of such individual's refusal to disclose
his Social Security number." Due to it, courts have ruled, in part:

"Right of privacy is a personal right designed to protect persons from
unwanted disclosure of personal information..." (CNA Financial Corporation
v. Local 743, D.C., Ill., 1981, 515F, Supp. 942, III.)

The District Court in Delaware held that the Privacy Act:

"Was enacted for [ purpose of curtailing the expanding use of Social
Security numbers...and to eliminate the threat to individual privacy and
confidentiality posed by common numerical identifiers." (Doyle V. Wilson,
D.C., Del., 1982, 529G, Supp. 1343.)

In the strongly worded Guideline arid Regulations for Maintenance of
Privacy and Protection of Records on Individuals it is stated:

"(a) It shall be unlawful...to deny to any individual any right, benefit or
privilege provided by law because of such individual's refusal to disclose
his Social Security account number."

The Privacy Act calls for the following penalty for knowingly violating it:

"(A) Actual damages sustained by the individual as a result of the refusal
or failure, but in no case shall a person entitled to recovery receive less
than the sum of $1,000; and (B) the costs of the action together with
reasonable attorney fees as determined by the court."

It is suggested that you take someone with you when you assert your rights
under the Privacy Act. He or she will witness the incident and testify (if
necessary) to the facts.

Courts have ruled that there are only four (4) instances when Social
Security numbers MUST be used. These are:

1. For tax purposes
2. To receive public assistance
3. To obtain and use a driver's license
4. To register a motor vehicle

In any situation not listed above, simply present this document to any
person who seems to need one. Invite him or her to make a copy. Point out
the $l,000 penalty that is guaranteed upon judgment that your rights were
violated under this act. Point out that an individual may personally be
required to pay the $1,000 if he/she is aware of the Privacy Act and
refuses to follow it. In Doyle v. Wilson, the court states: "Assuming that
the plaintiffs refusal to disclose his Social Security number was a clearly
established right, where defendants could not as reasonable persons have
been aware or the right and could not have recognized that any effort to
compel disclosure of number or to deny plaintiff his refund violated
federal law, damages against defendant were barred." (Doyle v. Wilson,
D.C., 1982, 529F, Supp 1343.)

It is quite clear that the individuals must be able to show that they could
not have been aware of the Privacy Act and could not have possibly realized
that their actions were in violation of federal law in order to escape the
$1,000 penalty.

Courtesy of the Heritage Caucus"

-- 101 Things to Do 'Til the Revolution", by Claire Wolfe



--
Yours In Liberty, Melissa - Colorado, U.S.A.
http://melissasliberty.blogspot.com/

The last best hope for liberty, to give the world its first Bill of
Rights: http://www.UPAlliance.org/billofrights.htm
Back to top
Vidar Løkken
electronics forum addict


Joined: 24 Mar 2005
Posts: 79

PostPosted: Thu Mar 24, 2005 6:59 pm    Post subject: Re: 10m-10cm distance measurement with 1cm accuracy at a rate of 50Hz Reply with quote

Yugo wrote:
Quote:
Do you know any small size, light weight distance sensor with the following
specs;
* Range : 10cm to 1000cm (10meter )
* Rate : 50 Hz (50 measurements/sec)
* Accuracy : 1cm
* Must operate on any surface (except transparent surfaces like glass)
* Power requirement : Less than 5W
* Weight : Lighter than 500grams
* Vibrartion sensitivity : Must operate 0-500Hz

No, but I guess they excist. You could use RADAR, simply send out sound,
and see how long time it takes for it to return (knowing sound travels
more or less 300m/s. This would make it dependent on the altitude, but
it'd be easier to make with a microcontroller than light/radio based
RADAR, since light would require really really good timing...


--
MVH,
Vidar

www.bitsex.net
Back to top
~
electronics forum beginner


Joined: 24 Mar 2005
Posts: 1

PostPosted: Thu Mar 24, 2005 6:59 pm    Post subject: Re: Beware of Radio Shack Reply with quote

give them a fake address.





In article <MeqdnfY6cZ_ZjmrdRVn-hQ@gbronline.com>, Wes Groleau
<groleau+news@freeshell.org> wrote:

Quote:
Gnarlodious wrote:
I bought a small item at Radio Shack several months ago, and the clerk asked
the man in front of me for his social security number. He began reciting it
in public but I interrupted him, telling him she didn't need his SS# and he
should never publicly announce it. A loud argument ensued with the clerk
bringing out the manager. The manager assured me it was official RS policy

Every time I try to buy something there, even if I pay cash,
they try to get my address and phone number. I always have
to argue with them. "You don't need my phone number to send
your stupid catalog, and I don't want the catalog anyway."

But they still argue they need it. Eventually I win or
I walk out with my money and no product.
Back to top
John A. Weeks III
electronics forum beginner


Joined: 24 Mar 2005
Posts: 1

PostPosted: Thu Mar 24, 2005 6:59 pm    Post subject: Re: Beware of Radio Shack Reply with quote

In article <210320051234152726%~@1.2>, ~ <~@1.2> wrote:

Quote:
In article <MeqdnfY6cZ_ZjmrdRVn-hQ@gbronline.com>, Wes Groleau
groleau+news@freeshell.org> wrote:

Gnarlodious wrote:
I bought a small item at Radio Shack several months ago, and the clerk
asked
the man in front of me for his social security number. He began reciting
it
in public but I interrupted him, telling him she didn't need his SS# and
he
should never publicly announce it. A loud argument ensued with the clerk
bringing out the manager. The manager assured me it was official RS
policy

That is either not true, or it was some rouge sales person. It is
not representative either of the policies of Radio Shack or the
training that sales people receive at Radio Shack. The only possible
explination for this is that the guy was filling out a credit app,
and he asked the clerk to take down the information for him. A
Dish, Direct TV, or cellular telephone application might require
a SSI number (since you are applying for credit in those cases), but
all stores would require the same information. Hardly a Radio
Shack issue.

-john-

--
======================================================================
John A. Weeks III 952-432-2708 john@johnweeks.com
Newave Communications http://www.johnweeks.com
======================================================================
Back to top
Wm.M.Chiaramonte
electronics forum beginner


Joined: 24 Mar 2005
Posts: 1

PostPosted: Thu Mar 24, 2005 6:59 pm    Post subject: Re: PC Based Oscilliscopes Reply with quote

Dale H. Cook wrote:
Quote:
On 21 Jan 2005 16:30:42 -0800, r2000swler@hotmail.com wrote:


A "real" scope is
much better, but much more expensive.


??? He said his budget is $200 - $300, and he can buy a older Tek or
HP 100 MHz dual trace 'scope for that kind of money.

Dale H. Cook, Chief Engineer, WWWR Roanoke VA, WCQV Moneta VA, WKBA
WZZI Vinton VA, WKPA WLNI WZZU Lynchburg VA, WMNA/WMNA-FM Gretna VA,
WOWZ Appomattox VA
http://members.cox.net/dalehcook/starcity.shtml

Mine he can't! Are you talking analog or digital? I own one that does
both (TEK 2232) but wouldn't dream of parting with it for anything like
$300+. I've looked at refurb house prices and even there you will shell
out >= $1k for a digital scope. If he is trying to decide on either a
conventional "lab" scope or a PC-based one let's compare apples to
apples shall we?!

ww
Back to top
CJT
electronics forum Guru Wannabe


Joined: 25 Mar 2005
Posts: 161

PostPosted: Thu Mar 24, 2005 6:59 pm    Post subject: Re: Beware of Radio Shack Reply with quote

~ wrote:
Quote:
give them a fake address.


.... or their own. Or go on the offensive, and ask for the sales

drone's home address.

Quote:



In article <MeqdnfY6cZ_ZjmrdRVn-hQ@gbronline.com>, Wes Groleau
groleau+news@freeshell.org> wrote:


Gnarlodious wrote:

I bought a small item at Radio Shack several months ago, and the clerk asked
the man in front of me for his social security number. He began reciting it
in public but I interrupted him, telling him she didn't need his SS# and he
should never publicly announce it. A loud argument ensued with the clerk
bringing out the manager. The manager assured me it was official RS policy

Every time I try to buy something there, even if I pay cash,
they try to get my address and phone number. I always have
to argue with them. "You don't need my phone number to send
your stupid catalog, and I don't want the catalog anyway."

But they still argue they need it. Eventually I win or
I walk out with my money and no product.


--
The e-mail address in our reply-to line is reversed in an attempt to
minimize spam. Our true address is of the form che...@prodigy.net.
Back to top
Geoffrey F. Green
electronics forum beginner


Joined: 24 Mar 2005
Posts: 1

PostPosted: Thu Mar 24, 2005 6:59 pm    Post subject: Re: Beware of Radio Shack Reply with quote

In article <q7SdnXAWzvGN2qLfRVn-oQ@forethought.net>,
Melissa <melissa@colorado.xxx> wrote:

Quote:
FYI:

"The following is not copyrighted and the Caucus encourages you to make
copies and give them to anyone who unlawfully requests your number. …

"PRIVACY ACT LIMITATIONS ON SOCIAL SECURITY NUMBER USAGE

Since many people objected to extensive loss of privacy which accompanied
the use of computers, Washington responded by passing the "Privacy Act,"
Title 5 of the United States Code Annotated 552(a). It states quite simply
that, "It shall he unlawful… to deny any individual any right, benefit or
privilege provided by law because of such individual's refusal to disclose
his Social Security number." Due to it, courts have ruled, in part:

First, the portion of the Privacy Act quoted says, in whole:

"It shall be unlawful for any Federal, State or local government
agency to deny to any individual any right, benefit, or privilege
provided by law because of such individual's refusal to disclose his
social security account number."

Note the limitation -- it only restricts a Federal, State or local
government agency. It does not limit businesses or other private
concerns. Radio Shack or any other business is welcome to require you
to provide your SSN, and you're welcome to do business elsewhere if
you decline to do so.

- geoff
Back to top
Google

Back to top
Display posts from previous:   
Post new topic   Reply to topic Page 1 of 19 [273 Posts] Goto page:  1, 2, 3, ..., 17, 18, 19 Next
View previous topic :: View next topic
The time now is Wed Dec 13, 2017 1:31 am | All times are GMT
Forum index » Electronix » Equipment
Jump to:  

Similar Topics
Topic Author Forum Replies Last Post
No new posts Measure long distance using ultrasonic sensor thieunguyen design 0 Wed Nov 19, 2008 5:34 pm
No new posts conducted EMI measurement krishmaniac@hotmail.com Basics 0 Fri Jul 21, 2006 12:13 pm
No new posts long distance (5 miles) wireless communication CMOS design 4 Fri Jul 14, 2006 5:42 am
No new posts Reactor inductance measurement n1mr0d Basics 8 Fri Jun 30, 2006 7:47 am
No new posts Car LED tail lights strobe rate too slow Mark design 89 Tue Jun 27, 2006 9:46 pm

Copyright © 2004-2005 DeniX Solutions SRL
Other DeniX Solutions sites: Unix/Linux blog |  Unix/Linux documentation |  Unix/Linux forums |  Medicine forum |  Science forum  |  Send and track newsletters


Powered by phpBB © 2001, 2005 phpBB Group