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Last Tuesday afternoon, Mar 9, for some unexplained reason Groups.io began
sending me messages that emails addressed to me from the groups.io groups I
belong to were bouncing.
That came in to my InBox about the time I was getting my wife, Marian, ready
for a hip replacement surgery early the following morning.

I didn't have a minute to myself from just before those notices started to
appear from Groups.io until Saturday morning to look at my email.

A few hours later on Tuesday Groups.io notified me that they were suspending
all email to me until I told them it was OK to resume sending it again. They
never explained why it was bouncing but on Saturday when I told them it was
OK to start sending it again they did. It was as if there was never a
problem in the first place. I still have no idea why this happened.

More importantly, I have no idea if I missed anything important. If I didn't
then I'm quite happy you all behaved yourselves :) :) :) in my enforced
absence.

Update on Marian: The hip replacement was a complete success. This is an
amazing operation with patients walking again without assistance (except for
a cane for a while) in a few weeks. At one point in the operation a surgical
robot is used (a first as far as I'm concerned). Almost a week after the
operation she is walking slowly with the aid of a walker. The biggest issue
at this point is pain from the incision and difficulty sleeping for very
long. Most of the pain meds make her dizzy, give her indigestion, cause her
constipation, and generally disagree with her so she has few choices to deal
with the pain. The pain makes it difficult for her to sleep.

Marian will remain home recuperating for the next 10 days. During that time
I have to do all the things she used to do for us. I had no idea how much
that involved. I'm exhausted most of the day while I take care of her needs;
do all the food shopping she used to do; walk, feed, and entertain our 5
Golden Retrievers, and try to cope with over 100 emails each day.

I appreciate, in advance, your concern for Marian and I apologize for not
responding to you get well wishes although I will pass them along as soon as
I get a chance to check in on TekScopes.

Dennis Tillman W7pF
Your fearless (foolish?) leader

I have some TM-500 plugins that have been stored for a number of years in
the garage in what I thought was a safe plastic storage container that is
almost fully sealed from the atmosphere. To my horror when opening the box
on the weekend all plugins have suffered some amount of corrosion damage.
Examples of the damage include hardware items such as screws rusting,
aluminium oxidisation and plastic (typically inner cables) showing chemical
deposits on the outer surfaces. A couple of the plugins were fully wrapped
in bubble wrap and have also suffered damage.

I had wondered if moisture had got inside the container which is possible
given that a small amount of air would be able to get insider the container
around the opening however given the nature of the damage this does not
seem to add up.

My suspicion is that the foam inside the container has emitted some sort
of chemical that has caused the corrosion possibly Methylene Chloride which
is apparently used in the production of polyurethane foams. Would this make
sense or is something else the likely cause of the issue?

Last Tuesday afternoon, Mar 9, for some unexplained reason Groups.io began
sending me messages that emails addressed to me from the groups.io groups I
belong to were bouncing.
That came in to my InBox about the time I was getting my wife, Marian, ready
for a hip replacement surgery early the following morning.

I didn't have a minute to myself from just before those notices started to
appear from Groups.io until Saturday morning to look at my email.

A few hours later on Tuesday Groups.io notified me that they were suspending
all email to me until I told them it was OK to resume sending it again. They
never explained why it was bouncing but on Saturday when I told them it was
OK to start sending it again they did. It was as if there was never a
problem in the first place. I still have no idea why this happened.

More importantly, I have no idea if I missed anything important. If I didn't
then I'm quite happy you all behaved yourselves :) :) :) in my enforced
absence.

Update on Marian: The hip replacement was a complete success. This is an
amazing operation with patients walking again without assistance (except for
a cane for a while) in a few weeks. At one point in the operation a surgical
robot is used (a first as far as I'm concerned). Almost a week after the
operation she is walking slowly with the aid of a walker. The biggest issue
at this point is pain from the incision and difficulty sleeping for very
long. Most of the pain meds make her dizzy, give her indigestion, cause her
constipation, and generally disagree with her so she has few choices to deal
with the pain. The pain makes it difficult for her to sleep.

Marian will remain home recuperating for the next 10 days. During that time
I have to do all the things she used to do for us. I had no idea how much
that involved. I'm exhausted most of the day while I take care of her needs;
do all the food shopping she used to do; walk, feed, and entertain our 5
Golden Retrievers, and try to cope with over 100 emails each day.

I appreciate, in advance, your concern for Marian and I apologize for not
responding to you get well wishes although I will pass them along as soon as
I get a chance to check in on TekScopes.

Dennis Tillman W7pF
Your fearless (foolish?) leader

Last Tuesday afternoon, Mar 9, for some unexplained reason Groups.io began
sending me messages that emails addressed to me from the groups.io groups I
belong to were bouncing.
That came in to my InBox about the time I was getting my wife, Marian, ready
for a hip replacement surgery early the following morning.

I didn't have a minute to myself from just before those notices started to
appear from Groups.io until Saturday morning to look at my email.

A few hours later on Tuesday Groups.io notified me that they were suspending
all email to me until I told them it was OK to resume sending it again. They
never explained why it was bouncing but on Saturday when I told them it was
OK to start sending it again they did. It was as if there was never a
problem in the first place. I still have no idea why this happened.

More importantly, I have no idea if I missed anything important. If I didn't
then I'm quite happy you all behaved yourselves :) :) :) in my enforced
absence.

Update on Marian: The hip replacement was a complete success. This is an
amazing operation with patients walking again without assistance (except for
a cane for a while) in a few weeks. At one point in the operation a surgical
robot is used (a first as far as I'm concerned). Almost a week after the
operation she is walking slowly with the aid of a walker. The biggest issue
at this point is pain from the incision and difficulty sleeping for very
long. Most of the pain meds make her dizzy, give her indigestion, cause her
constipation, and generally disagree with her so she has few choices to deal
with the pain. The pain makes it difficult for her to sleep.

Marian will remain home recuperating for the next 10 days. During that time
I have to do all the things she used to do for us. I had no idea how much
that involved. I'm exhausted most of the day while I take care of her needs;
do all the food shopping she used to do; walk, feed, and entertain our 5
Golden Retrievers, and try to cope with over 100 emails each day.

I appreciate, in advance, your concern for Marian and I apologize for not
responding to you get well wishes although I will pass them along as soon as
I get a chance to check in on TekScopes.

Dennis Tillman W7pF
Your fearless (foolish?) leader

Last Tuesday afternoon, Mar 9, for some unexplained reason Groups.io began
sending me messages that emails addressed to me from the groups.io groups
I
belong to were bouncing.
That came in to my InBox about the time I was getting my wife, Marian,
ready
for a hip replacement surgery early the following morning.

I didn't have a minute to myself from just before those notices started to
appear from Groups.io until Saturday morning to look at my email.

A few hours later on Tuesday Groups.io notified me that they were
suspending
all email to me until I told them it was OK to resume sending it again.
They
never explained why it was bouncing but on Saturday when I told them it was
OK to start sending it again they did. It was as if there was never a
problem in the first place. I still have no idea why this happened.

More importantly, I have no idea if I missed anything important. If I
didn't
then I'm quite happy you all behaved yourselves :) :) :) in my enforced
absence.

Update on Marian: The hip replacement was a complete success. This is an
amazing operation with patients walking again without assistance (except
for
a cane for a while) in a few weeks. At one point in the operation a
surgical
robot is used (a first as far as I'm concerned). Almost a week after the
operation she is walking slowly with the aid of a walker. The biggest issue
at this point is pain from the incision and difficulty sleeping for very
long. Most of the pain meds make her dizzy, give her indigestion, cause her
constipation, and generally disagree with her so she has few choices to
deal
with the pain. The pain makes it difficult for her to sleep.

Marian will remain home recuperating for the next 10 days. During that time
I have to do all the things she used to do for us. I had no idea how much
that involved. I'm exhausted most of the day while I take care of her
needs;
do all the food shopping she used to do; walk, feed, and entertain our 5
Golden Retrievers, and try to cope with over 100 emails each day.

I appreciate, in advance, your concern for Marian and I apologize for not
responding to you get well wishes although I will pass them along as soon
as
I get a chance to check in on TekScopes.

Dennis Tillman W7pF
Your fearless (foolish?) leader

Last Tuesday afternoon, Mar 9, for some unexplained reason Groups.io began
sending me messages that emails addressed to me from the groups.io groups I
belong to were bouncing.
That came in to my InBox about the time I was getting my wife, Marian, ready
for a hip replacement surgery early the following morning.

I didn't have a minute to myself from just before those notices started to
appear from Groups.io until Saturday morning to look at my email.

A few hours later on Tuesday Groups.io notified me that they were suspending
all email to me until I told them it was OK to resume sending it again. They
never explained why it was bouncing but on Saturday when I told them it was
OK to start sending it again they did. It was as if there was never a
problem in the first place. I still have no idea why this happened.

More importantly, I have no idea if I missed anything important. If I didn't
then I'm quite happy you all behaved yourselves :) :) :) in my enforced
absence.

Update on Marian: The hip replacement was a complete success. This is an
amazing operation with patients walking again without assistance (except for
a cane for a while) in a few weeks. At one point in the operation a surgical
robot is used (a first as far as I'm concerned). Almost a week after the
operation she is walking slowly with the aid of a walker. The biggest issue
at this point is pain from the incision and difficulty sleeping for very
long. Most of the pain meds make her dizzy, give her indigestion, cause her
constipation, and generally disagree with her so she has few choices to deal
with the pain. The pain makes it difficult for her to sleep.

Marian will remain home recuperating for the next 10 days. During that time
I have to do all the things she used to do for us. I had no idea how much
that involved. I'm exhausted most of the day while I take care of her needs;
do all the food shopping she used to do; walk, feed, and entertain our 5
Golden Retrievers, and try to cope with over 100 emails each day.

I appreciate, in advance, your concern for Marian and I apologize for not
responding to you get well wishes although I will pass them along as soon as
I get a chance to check in on TekScopes.

Dennis Tillman W7pF
Your fearless (foolish?) leader

Last Tuesday afternoon, Mar 9, for some unexplained reason Groups.io began
sending me messages that emails addressed to me from the groups.io groups I
belong to were bouncing.
That came in to my InBox about the time I was getting my wife, Marian, ready
for a hip replacement surgery early the following morning.

I didn't have a minute to myself from just before those notices started to
appear from Groups.io until Saturday morning to look at my email.

A few hours later on Tuesday Groups.io notified me that they were suspending
all email to me until I told them it was OK to resume sending it again. They
never explained why it was bouncing but on Saturday when I told them it was
OK to start sending it again they did. It was as if there was never a
problem in the first place. I still have no idea why this happened.

More importantly, I have no idea if I missed anything important. If I didn't
then I'm quite happy you all behaved yourselves :) :) :) in my enforced
absence.

Update on Marian: The hip replacement was a complete success. This is an
amazing operation with patients walking again without assistance (except for
a cane for a while) in a few weeks. At one point in the operation a surgical
robot is used (a first as far as I'm concerned). Almost a week after the
operation she is walking slowly with the aid of a walker. The biggest issue
at this point is pain from the incision and difficulty sleeping for very
long. Most of the pain meds make her dizzy, give her indigestion, cause her
constipation, and generally disagree with her so she has few choices to deal
with the pain. The pain makes it difficult for her to sleep.

Marian will remain home recuperating for the next 10 days. During that time
I have to do all the things she used to do for us. I had no idea how much
that involved. I'm exhausted most of the day while I take care of her needs;
do all the food shopping she used to do; walk, feed, and entertain our 5
Golden Retrievers, and try to cope with over 100 emails each day.

I appreciate, in advance, your concern for Marian and I apologize for not
responding to you get well wishes although I will pass them along as soon as
I get a chance to check in on TekScopes.

Dennis Tillman W7pF
Your fearless (foolish?) leader

That makes sense - but which one is it and how to check the enable signal is
being sent to it?

D.

-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of John Gord via
groups.io
Sent: 14 March 2021 22:45
To: [email protected]
Subject: Re: [TekScopes] Broke my TDS3000B

David,
The TDS3000 series scopes have a fast-in, slow-out chip that is used for the
higher sample rates. Apparently that chip is enabled for sample rates above
2.5 million samp/sec, but a normal ADC is used at 2.5M samp/sec and slower.
--John Gord

On Sun, Mar 14, 2021 at 04:54 AM, David C. Partridge wrote:

I've just put it back together after yet another cleaning session, but with

no

change ?

However I do have something to report which may be useful: If I bring up

the

acquire menu, and select "Fast Trigger" (500 points), then the calibrator

wave

form is display correctly down to a sweep speed of 20us/div (400us/div in
"Normal Resolution" mode). If I go down 10us/div it all breaks up into a

mush

again.

I'm sure this means something useful to someone who knows more about how

this

beastie works.

-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Martin
Sent: 12 March 2021 13:52
To: [email protected]
Subject: Re: [TekScopes] Broke my TDS3000B

I've no idea what I should be looking for and those pins are mighty small
and close together.

Oh yes, thats not easy.

I was thinking about checking if the lines are totally stuck or are looking
normal, i.e. change state every now and then.
Or if a line is moving a little when you switch below 400us... things like
that, to confirm or not if the ASIC really has a problem.

cheers
Martin