开云体育

" there are commercially
available LED backlight kits to replace the CCFL lamps. "

I would be in your dept if you could point me to an LED replacement for the
fluorescent tubes in the NEC displays like that are used in the TDS3000
series (no bloody A, No bloody B or C). I'll get the actual NEC LCD part
number and reply again later. I wonder if the LED replacement is made to
run off the fluorescent tube inverter supply? I ask that because that
supply has software control line to control the brightness. LET is
probably off or on, unless it is designed to run off the inverter or a
software equivalent inverter is available (retrofitting old equipment not
designing new stuff).

dave

On Tue, Nov 5, 2019 at 2:31 PM Harvey White <madyn@...> wrote:

On 11/5/2019 1:59 PM, David Kuhn wrote:

Sorry for the response delay.

I am in Lewistown, PA. How cheap are the displays and where are you
finding them? I have found the ones, used in the Ultrasonic instruments

I

mentioned, on Alliexpress, and EBAY (haven't ordered any from either

one),

but I can not find the backlight tubes, which I find is usually the

problem

with the displays. The displays may be just slightly different than in

the

TDS3032, but if so, only mechanically. The connectors are the same, and

I

really think the part numbers are the same. It's not a real easy
replacement in those TDS scopes. It looks easy, but it's a pain in the
butt.

Depending on the manufacturer of the display, there are commercially
available LED backlight kits to replace the CCFL lamps.

You may want to buy the TDS3GV on EBAY. I can't use a TDS3032 without

one,

but I have written a lot of service software in VBA and VB6 that
automatically sets up the scopes and gets data from them. I can also
project my TDS3032 to the 32" TV mounted on the wall above it (an older
Sceptre with VGA input) and that's pretty cool.

Again, if the cables are seated well, I doubt the LCD is bad with an
all-white display. My thoughts are a main PCB issue. A TSD3GV could

prove

me wrong.

If you find an all white display, then depending on the type of display
(positive or negative) you'd suspect no signals to it, or improper signals.

The display is likely to take either 5 or 3.3 volts, recent ones that I
have take 3.3. Older STN displays can take 5. The white is the result
of the backlight working, but no active pixels at all (hence no
polarization, etc....).

Like a CRT display, you'll be looking for a horizontal sync (at perhaps
30 Khz), vertical sync (say 60 or so Hz), a DE (likely at horizontal
rate and active high), and a pixel clock at about 25 or so Mhz. You'd
also expect supply voltages to be somewhere on the display. If the
timing is right and the voltages are there, then the display ought to be
showing something. If not, then look at the other pins, they should be
R,G,B digital signals, either in 565 (for a 16 bit panel) or 666 (for an
18 bit panel). If there's any activity on them, then with the right
sync signals, they ought to be giving something on the display.

Harvey

Dave

On Tue, Oct 29, 2019 at 10:55 PM Tom B <tbryan@...> wrote:

Hi Dave,

I tried the "B Trig" and nothing happened. Displays are fairly cheap
but I don't want to buy one unless I have to.

Thank you for the offer. I would be a long while before I make it up
that way.

What town are you in?

Tom

On 10/29/2019 4:52 PM, David Kuhn wrote:

I'm in central, PA, about 3 hours from you if you ever want to come up

and

try it here with one of my VGA/GPIB modules.

Before that. Power it up while holding in the "B TRIG" button (might

be

different on the TDS3014), which on my TDS3032's causes a RESET. I've

had

that fix display issues after replacing the battery NVRAM in in the

scope.

The display in the TDS3032, is the exact same LCD used in the GEIT

Phasor

XS and USN60 instruments. I have worked on many. I have never seen

the

LCD fail on those instrument where it's all white. Typical, if not

broken,

is smeary displays that lines seems to go out of sync. Dim, of course

with

broken backlight tubes.

Dave

On Mon, Oct 28, 2019 at 10:50 PM Tom B <tbryan@...> wrote:

Hi Rich (?),

Thanks. I am located in Maryland near Washington DC.

If anyone in the Washington DC area has a TDS3GV that I could come

over

and quickly test my scope with, I would appreciate it.

Tom Bryan
N3AJA


On 10/28/2019 10:29 AM, Oz-in-DFW wrote:

I'd still remove and reseat both ends.

Where are you in the world? I have a VGA/serial/GPIB card in my 3014

that we might be able to mate with your scope briefly.

On 11/5/2019 1:59 PM, David Kuhn wrote:

Sorry for the response delay.

I am in Lewistown, PA. How cheap are the displays and where are you
finding them? I have found the ones, used in the Ultrasonic instruments

I

mentioned, on Alliexpress, and EBAY (haven't ordered any from either

one),

but I can not find the backlight tubes, which I find is usually the

problem

with the displays. The displays may be just slightly different than in

the

TDS3032, but if so, only mechanically. The connectors are the same, and

I

really think the part numbers are the same. It's not a real easy
replacement in those TDS scopes. It looks easy, but it's a pain in the
butt.

Depending on the manufacturer of the display, there are commercially
available LED backlight kits to replace the CCFL lamps.

You may want to buy the TDS3GV on EBAY. I can't use a TDS3032 without

one,

but I have written a lot of service software in VBA and VB6 that
automatically sets up the scopes and gets data from them. I can also
project my TDS3032 to the 32" TV mounted on the wall above it (an older
Sceptre with VGA input) and that's pretty cool.

Again, if the cables are seated well, I doubt the LCD is bad with an
all-white display. My thoughts are a main PCB issue. A TSD3GV could

prove

me wrong.

If you find an all white display, then depending on the type of display
(positive or negative) you'd suspect no signals to it, or improper signals.

The display is likely to take either 5 or 3.3 volts, recent ones that I
have take 3.3. Older STN displays can take 5. The white is the result
of the backlight working, but no active pixels at all (hence no
polarization, etc....).

Like a CRT display, you'll be looking for a horizontal sync (at perhaps
30 Khz), vertical sync (say 60 or so Hz), a DE (likely at horizontal
rate and active high), and a pixel clock at about 25 or so Mhz. You'd
also expect supply voltages to be somewhere on the display. If the
timing is right and the voltages are there, then the display ought to be
showing something. If not, then look at the other pins, they should be
R,G,B digital signals, either in 565 (for a 16 bit panel) or 666 (for an
18 bit panel). If there's any activity on them, then with the right
sync signals, they ought to be giving something on the display.

Harvey

Dave

On Tue, Oct 29, 2019 at 10:55 PM Tom B <tbryan@...> wrote:

Hi Dave,

I tried the "B Trig" and nothing happened. Displays are fairly cheap
but I don't want to buy one unless I have to.

Thank you for the offer. I would be a long while before I make it up
that way.

What town are you in?

Tom

On 10/29/2019 4:52 PM, David Kuhn wrote:

I'm in central, PA, about 3 hours from you if you ever want to come up

and

try it here with one of my VGA/GPIB modules.

Before that. Power it up while holding in the "B TRIG" button (might

be

different on the TDS3014), which on my TDS3032's causes a RESET. I've

had

that fix display issues after replacing the battery NVRAM in in the

scope.

The display in the TDS3032, is the exact same LCD used in the GEIT

Phasor

XS and USN60 instruments. I have worked on many. I have never seen

the

LCD fail on those instrument where it's all white. Typical, if not

broken,

is smeary displays that lines seems to go out of sync. Dim, of course

with

broken backlight tubes.

Dave

On Mon, Oct 28, 2019 at 10:50 PM Tom B <tbryan@...> wrote:

Hi Rich (?),

Thanks. I am located in Maryland near Washington DC.

If anyone in the Washington DC area has a TDS3GV that I could come

over

and quickly test my scope with, I would appreciate it.

Tom Bryan
N3AJA


On 10/28/2019 10:29 AM, Oz-in-DFW wrote:

I'd still remove and reseat both ends.

Where are you in the world? I have a VGA/serial/GPIB card in my 3014

that we might be able to mate with your scope briefly.

Hi Grant-

Thanks much for your thoughtful post!

From reading the messages in this thread, it appears that the source of
disagreement is the fact that different folks experience a very different
level of aggravation from subject drift in a thread. Honestly, what you
referred to about clicking on a thread and finding out that the subject has
drifted significantly from what the header advertises really doesn't bother
me at all. But, I realize that it aggravates the very daylights out of
some folks! :-) And you're right, I do initially read new messages in an
email digest. I get into a browser to reply or to read a whole thread
though.

I do hope the issue does not continue to disturb the nature of the group.
Too much good info and too many good folks here!

Tom


On Tue, Nov 5, 2019 at 01:51 PM, G Hopper wrote:

Tom,
I think one reason you might not appreciate Craig's comment and position

is

twofold. First, is that I would guess that you're reading the posts via
email and so, I agree, it is very easy to delete, but I think we've all
been at the spot where we open an email thinking it is about one thing,

and

it turns out to be about something different. The extreme of that is

spam

advertising. Opening an email thinking it's about 7000 series stuff only

to

find it doesn't have anything to do with the stated subject except in a
vague or oblique way, can be just as frustrating and would also fit the
definition of spam from a content point of view.

Second is that when searching on line and hoping to find an answer,
particularly with detail or troubleshooting, I personally find it more
pleasing to not have a lot of extraneous stuff in a topic/subject thread.
While it seems impossible to achieve these days, it's a laudable, and
apparently achievable goal.

Having said that, When I opened the thread, I didn't expect a 7000 only
post. In fact, the post pretty much fit what I expected, a story. In

fact

the subject like practically advertised that there would be a story. I

did

like the story as well :-) After all, it told of reasons why the 7000
series is useful and part of that is an incredibly necessary explanation

of

how and why the writer came to that conclusion so that as readers we

might

consider whether we agree with his premise that "7000 still hard to

beat".

He seemed to tell a story that made that point well.

So, in my estimation of things, Craig's original premise (that the OP's
"subject" and contents were inconsistent and not appropriately

descriptive)

wasn't reasonable, but his comments about keeping reply posts on topic or
at least highly pertinent to the original topic was (again IMHO) a good

and

important point we should all endeavor to subscribe to.

Grant


On Tue, Nov 5, 2019 at 1:33 PM fiftythreebuick <ae5i@...> wrote:

Hi Craig-

I must be missing something....

If I click on a thread and see that it's veered off topic so that it's

no

longer of interest to me, it only takes oh maybe 3 - 5 seconds to

click on

another thread. That doesn't seem like a big deal to me, but am I

missing

something? I genuinely don't understand the problem!

Have a great evening!

Tom


On Tue, Nov 5, 2019 at 08:02 AM, Craig Sawyers wrote:

Here's the thing Chuck - if the topic was called something like

"2465B

and

7000 series - a comparison"
or something similar that would have been more informative of the

thread

topic.

I have a lot of interest in the 7000 series and none at all in the

2465B

(apart from anything else I
have no room left for any other series!) - hence my chagrin at

opening

posts

and expecting it to be
about the 7000 series and finding it was something else entirely.

Frustratingly this happens all the time, and renders it difficult to
impossible to find relevant posts
in the archives.

There is one list I'm a long standing member of
( ) where
if a thread strays off topic the mods simply delete the straying

posts,

often

within minutes. And
don't even tell you if and why your post has vanished.

I'm not remotely suggesting that we go down that route - just a

little

more

discipline in (a) using
an informative title for the thread and (b) if the thread changes to

a

different topic to change the
working title to reflect that.

We agree about the politics entirely ;-)

Craig

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf

Of

Chuck

Harris

Sent: 05 November 2019 14:48
To: [email protected]
Subject: Re: [TekScopes] 7000 still hard to beat

Craig,

You are out of line here. You are my friend, but you are
wrong.

Peter opened this thread describing how his go to 2465B
fell short of his needs, forcing him to resort to a
combination of 7A22 and 7000 series scope to make his
measurement.

That was an obvious opening for both 2465B fans, and
7000 series fans to discuss the topic.

To add fuel to this fire, I calibrate lots of 2465 family
scopes, for group members, but my go to scope is a 7854
for the same reason that Peter went to his 7103/7A22 to
solve his difficult task.

I keep my 7854 stuffed with an assortment of plugins that
meet my daily needs in a way I just can't with the highly
capable, portable, but ultimately limited 2465B.

Discussions on this group are never fixed and ridged they
wiggle and squirm their way into different discussions...

But excepting for your tirade, this discussion has stuck
to its original course. It started as a discussion of
2465B's vs 7000 series versatility, and so it has remained.

Be glad that we haven't veered into politics.

-Chuck Harris

Craig Sawyers wrote:

Don't agree. When I open a post that is "7000 still hard to

beat" I

expect

to find posts on the

topic
of the 7000 series scopes and plug ins. Not the 2465B.

There is nothing more frustrating than keeping a message title

and

digressing onto another topic.

Craig

-----Original Message-----
From: [email protected] [mailto:[email protected]] On

Behalf Of

Polaraligned

Sent: 05 November 2019 01:52
To: [email protected]
Subject: Re: [TekScopes] 7000 still hard to beat

Well that is a little rude Craig. The OP clearly states that a

2465B is

his main scope and he

only
pulled
out a R7103 and put in a 7A22 for greater sensitivity and

differential

input. My simple question

was
asking if there was an active probe with diff inputs that could

increase

his main scope, the

2465B.

Hi Grant-

Thanks much for your thoughtful post!

From reading the messages in this thread, it appears that the source of
disagreement is the fact that different folks experience a very different
level of aggravation from subject drift in a thread. Honestly, what you
referred to about clicking on a thread and finding out that the subject has
drifted significantly from what the header advertises really doesn't bother
me at all. But, I realize that it aggravates the very daylights out of
some folks! :-) And you're right, I do initially read new messages in an
email digest. I get into a browser to reply or to read a whole thread
though.

I do hope the issue does not continue to disturb the nature of the group.
Too much good info and too many good folks here!

Tom


On Tue, Nov 5, 2019 at 01:51 PM, G Hopper wrote:

Tom,
I think one reason you might not appreciate Craig's comment and position

is

twofold. First, is that I would guess that you're reading the posts via
email and so, I agree, it is very easy to delete, but I think we've all
been at the spot where we open an email thinking it is about one thing,

and

it turns out to be about something different. The extreme of that is

spam

advertising. Opening an email thinking it's about 7000 series stuff only

to

find it doesn't have anything to do with the stated subject except in a
vague or oblique way, can be just as frustrating and would also fit the
definition of spam from a content point of view.

Second is that when searching on line and hoping to find an answer,
particularly with detail or troubleshooting, I personally find it more
pleasing to not have a lot of extraneous stuff in a topic/subject thread.
While it seems impossible to achieve these days, it's a laudable, and
apparently achievable goal.

Having said that, When I opened the thread, I didn't expect a 7000 only
post. In fact, the post pretty much fit what I expected, a story. In

fact

the subject like practically advertised that there would be a story. I

did

like the story as well :-) After all, it told of reasons why the 7000
series is useful and part of that is an incredibly necessary explanation

of

how and why the writer came to that conclusion so that as readers we

might

consider whether we agree with his premise that "7000 still hard to

beat".

He seemed to tell a story that made that point well.

So, in my estimation of things, Craig's original premise (that the OP's
"subject" and contents were inconsistent and not appropriately

descriptive)

wasn't reasonable, but his comments about keeping reply posts on topic or
at least highly pertinent to the original topic was (again IMHO) a good

and

important point we should all endeavor to subscribe to.

Grant


On Tue, Nov 5, 2019 at 1:33 PM fiftythreebuick <ae5i@...> wrote:

Hi Craig-

I must be missing something....

If I click on a thread and see that it's veered off topic so that it's

no

longer of interest to me, it only takes oh maybe 3 - 5 seconds to

click on

another thread. That doesn't seem like a big deal to me, but am I

missing

something? I genuinely don't understand the problem!

Have a great evening!

Tom


On Tue, Nov 5, 2019 at 08:02 AM, Craig Sawyers wrote:

Here's the thing Chuck - if the topic was called something like

"2465B

and

7000 series - a comparison"
or something similar that would have been more informative of the

thread

topic.

I have a lot of interest in the 7000 series and none at all in the

2465B

(apart from anything else I
have no room left for any other series!) - hence my chagrin at

opening

posts

and expecting it to be
about the 7000 series and finding it was something else entirely.

Frustratingly this happens all the time, and renders it difficult to
impossible to find relevant posts
in the archives.

There is one list I'm a long standing member of
( ) where
if a thread strays off topic the mods simply delete the straying

posts,

often

within minutes. And
don't even tell you if and why your post has vanished.

I'm not remotely suggesting that we go down that route - just a

little

more

discipline in (a) using
an informative title for the thread and (b) if the thread changes to

a

different topic to change the
working title to reflect that.

We agree about the politics entirely ;-)

Craig

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf

Of

Chuck

Harris

Sent: 05 November 2019 14:48
To: [email protected]
Subject: Re: [TekScopes] 7000 still hard to beat

Craig,

You are out of line here. You are my friend, but you are
wrong.

Peter opened this thread describing how his go to 2465B
fell short of his needs, forcing him to resort to a
combination of 7A22 and 7000 series scope to make his
measurement.

That was an obvious opening for both 2465B fans, and
7000 series fans to discuss the topic.

To add fuel to this fire, I calibrate lots of 2465 family
scopes, for group members, but my go to scope is a 7854
for the same reason that Peter went to his 7103/7A22 to
solve his difficult task.

I keep my 7854 stuffed with an assortment of plugins that
meet my daily needs in a way I just can't with the highly
capable, portable, but ultimately limited 2465B.

Discussions on this group are never fixed and ridged they
wiggle and squirm their way into different discussions...

But excepting for your tirade, this discussion has stuck
to its original course. It started as a discussion of
2465B's vs 7000 series versatility, and so it has remained.

Be glad that we haven't veered into politics.

-Chuck Harris

Craig Sawyers wrote:

Don't agree. When I open a post that is "7000 still hard to

beat" I

expect

to find posts on the

topic
of the 7000 series scopes and plug ins. Not the 2465B.

There is nothing more frustrating than keeping a message title

and

digressing onto another topic.

Craig

-----Original Message-----
From: [email protected] [mailto:[email protected]] On

Behalf Of

Polaraligned

Sent: 05 November 2019 01:52
To: [email protected]
Subject: Re: [TekScopes] 7000 still hard to beat

Well that is a little rude Craig. The OP clearly states that a

2465B is

his main scope and he

only
pulled
out a R7103 and put in a 7A22 for greater sensitivity and

differential

input. My simple question

was
asking if there was an active probe with diff inputs that could

increase

his main scope, the

2465B.

Tom,
I think one reason you might not appreciate Craig's comment and position is
twofold. First, is that I would guess that you're reading the posts via
email and so, I agree, it is very easy to delete, but I think we've all
been at the spot where we open an email thinking it is about one thing, and
it turns out to be about something different. The extreme of that is spam
advertising. Opening an email thinking it's about 7000 series stuff only to
find it doesn't have anything to do with the stated subject except in a
vague or oblique way, can be just as frustrating and would also fit the
definition of spam from a content point of view.

Second is that when searching on line and hoping to find an answer,
particularly with detail or troubleshooting, I personally find it more
pleasing to not have a lot of extraneous stuff in a topic/subject thread.
While it seems impossible to achieve these days, it's a laudable, and
apparently achievable goal.

Having said that, When I opened the thread, I didn't expect a 7000 only
post. In fact, the post pretty much fit what I expected, a story. In fact
the subject like practically advertised that there would be a story. I did
like the story as well :-) After all, it told of reasons why the 7000
series is useful and part of that is an incredibly necessary explanation of
how and why the writer came to that conclusion so that as readers we might
consider whether we agree with his premise that "7000 still hard to beat".
He seemed to tell a story that made that point well.

So, in my estimation of things, Craig's original premise (that the OP's
"subject" and contents were inconsistent and not appropriately descriptive)
wasn't reasonable, but his comments about keeping reply posts on topic or
at least highly pertinent to the original topic was (again IMHO) a good and
important point we should all endeavor to subscribe to.

Grant


On Tue, Nov 5, 2019 at 1:33 PM fiftythreebuick <ae5i@...> wrote:

Hi Craig-

I must be missing something....

If I click on a thread and see that it's veered off topic so that it's no
longer of interest to me, it only takes oh maybe 3 - 5 seconds to click on
another thread. That doesn't seem like a big deal to me, but am I missing
something? I genuinely don't understand the problem!

Have a great evening!

Tom


On Tue, Nov 5, 2019 at 08:02 AM, Craig Sawyers wrote:

Here's the thing Chuck - if the topic was called something like "2465B

and

7000 series - a comparison"
or something similar that would have been more informative of the thread
topic.

I have a lot of interest in the 7000 series and none at all in the 2465B
(apart from anything else I
have no room left for any other series!) - hence my chagrin at opening

posts

and expecting it to be
about the 7000 series and finding it was something else entirely.

Frustratingly this happens all the time, and renders it difficult to
impossible to find relevant posts
in the archives.

There is one list I'm a long standing member of
( ) where
if a thread strays off topic the mods simply delete the straying posts,

often

within minutes. And
don't even tell you if and why your post has vanished.

I'm not remotely suggesting that we go down that route - just a little

more

discipline in (a) using
an informative title for the thread and (b) if the thread changes to a
different topic to change the
working title to reflect that.

We agree about the politics entirely ;-)

Craig

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of

Chuck

Harris

Sent: 05 November 2019 14:48
To: [email protected]
Subject: Re: [TekScopes] 7000 still hard to beat

Craig,

You are out of line here. You are my friend, but you are
wrong.

Peter opened this thread describing how his go to 2465B
fell short of his needs, forcing him to resort to a
combination of 7A22 and 7000 series scope to make his
measurement.

That was an obvious opening for both 2465B fans, and
7000 series fans to discuss the topic.

To add fuel to this fire, I calibrate lots of 2465 family
scopes, for group members, but my go to scope is a 7854
for the same reason that Peter went to his 7103/7A22 to
solve his difficult task.

I keep my 7854 stuffed with an assortment of plugins that
meet my daily needs in a way I just can't with the highly
capable, portable, but ultimately limited 2465B.

Discussions on this group are never fixed and ridged they
wiggle and squirm their way into different discussions...

But excepting for your tirade, this discussion has stuck
to its original course. It started as a discussion of
2465B's vs 7000 series versatility, and so it has remained.

Be glad that we haven't veered into politics.

-Chuck Harris

Craig Sawyers wrote:

Don't agree. When I open a post that is "7000 still hard to beat" I

expect

to find posts on the

topic
of the 7000 series scopes and plug ins. Not the 2465B.

There is nothing more frustrating than keeping a message title and

digressing onto another topic.

Craig

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of

Polaraligned

Sent: 05 November 2019 01:52
To: [email protected]
Subject: Re: [TekScopes] 7000 still hard to beat

Well that is a little rude Craig. The OP clearly states that a

2465B is

his main scope and he

only
pulled
out a R7103 and put in a 7A22 for greater sensitivity and

differential

input. My simple question

was
asking if there was an active probe with diff inputs that could

increase

his main scope, the

2465B.

On Nov 5, 2019, at 21:40, John Griessen <john@...> wrote:

On 11/5/19 6:51 PM, Craig Sawyers wrote:
it is
finally time to sign off.

OK, but come back if you miss the conversation.