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My 2465BDM just arrived!!

 

Hello all,

My new (to me) 2465BDM just arrived. Turning it on, all passed and gave me four lines - one for each channel.

I tried each channel in turn with my function generator and each worked fine. I will be testing the calibration over time.

What I wanted to know is how to tell the age and turn on times. I thought there was a way of doing so. I can¡¯t find it in the manual. Perchance I¡¯m wrong and there is no way of knowing. Further, I remember reading that those scopes with serial number above B05xxx needed their Caps replaced. My number is B014xxx. Thus, I think I¡¯m OK until I have more time to tear the thing apart.

I¡¯ll be selling my 2465 (300 Meg) as soon as I begin to feel comfortable with the new addition.

Thanks for any answers, larry
Chuck Harris
 

Although the scope has a set of counters/timers that can be reached
through the calibration mode, it is not intended to be a reliable
indication of the age or use of your scope over its lifetime... just
a gauge of how it was used since the last service, or calibration.

The calibration technician will reset these numbers to zero, when he
reaches that point in the calibration routine.

Charltons will always set them to zero to make the unwary buyer think
he is getting something he isn't.

Don't fixate on these numbers!

The best gauge of your scope's age is how the CRT looks when it is
displaying a 6 division P-P 10 MHz sinewave at 100ns/div. Apply the
sinewave, and turn your intensity to full, and look at what the beam
looks like. If it is dim with a distinct halo, your CRT is old.

If it is so bright it looks dangerous, it is fine.

If your CRT can't display a 100KHz rep rate step function at 500ps/div
that is readable in normal light, it is old.

If your scope has a serial number greater than B050000, its A5 board
must be checked for electrolyte leakage now.

As an aside, the BDM is the hardest of the family to work on by a
long shot. It is not a good scope on which to learn scope repair.

-Chuck Harris

Lawrance A. Schneider wrote:

Hello all,

My new (to me) 2465BDM just arrived. Turning it on, all passed and gave me four lines - one for each channel.

I tried each channel in turn with my function generator and each worked fine. I will be testing the calibration over time.

What I wanted to know is how to tell the age and turn on times. I thought there was a way of doing so. I can¡¯t find it in the manual. Perchance I¡¯m wrong and there is no way of knowing. Further, I remember reading that those scopes with serial number above B05xxx needed their Caps replaced. My number is B014xxx. Thus, I think I¡¯m OK until I have more time to tear the thing apart.

I¡¯ll be selling my 2465 (300 Meg) as soon as I begin to feel comfortable with the new addition.

Thanks for any answers, larry
Bob Albert
 

You can? approximate the age of the unit by opening it and looking for component date codes.? Sometimes on turn-on there is an information screen with a software/firmware revision date.
Bob

On Thursday, August 8, 2019, 01:11:09 PM PDT, Lawrance A. Schneider <llaassllaaass@...> wrote:

Hello all,

My new (to me) 2465BDM just arrived.? Turning it on, all passed and gave me four lines - one for each channel.

I tried each channel in turn with my function generator and each worked fine.? I will be testing the calibration over time.

What I wanted to know is how to tell the age and turn on times.? I thought there was a way of doing so.? I can¡¯t find it in the manual.? Perchance I¡¯m wrong and there is no way of knowing.? Further, I remember reading that those scopes with serial number above B05xxx needed their Caps replaced.? My number is B014xxx.? Thus, I think I¡¯m OK until I have more time to tear the thing apart.

I¡¯ll be selling my 2465 (300 Meg) as soon as I begin to feel comfortable with the new addition.

Thanks for any answers,??? ??? larry
 

Thank you Chuck; Very bright and sharp - no halo. Fastest speed is 5 nano - at that speed, trace is easy to see. I hear you admonition; I'll wait a little - maybe never if everything is OK.

Thank you Bob; no revision date shown.

One further question. Is there anything ¡¯special¡¯ about the DM probes? I got 4 P6139a probes with it but no DMM probes. I would think any of my Fluke or other secondary market probes would be OK.

Thank you , larry

On Aug 8, 2019, at 4:57 PM, Bob Albert via Groups.Io <bob91343@...> wrote:

You can approximate the age of the unit by opening it and looking for component date codes. Sometimes on turn-on there is an information screen with a software/firmware revision date.
Bob
On Thursday, August 8, 2019, 01:11:09 PM PDT, Lawrance A. Schneider <llaassllaaass@...> wrote:

Hello all,

My new (to me) 2465BDM just arrived. Turning it on, all passed and gave me four lines - one for each channel.

I tried each channel in turn with my function generator and each worked fine. I will be testing the calibration over time.

What I wanted to know is how to tell the age and turn on times. I thought there was a way of doing so. I can¡¯t find it in the manual. Perchance I¡¯m wrong and there is no way of knowing. Further, I remember reading that those scopes with serial number above B05xxx needed their Caps replaced. My number is B014xxx. Thus, I think I¡¯m OK until I have more time to tear the thing apart.

I¡¯ll be selling my 2465 (300 Meg) as soon as I begin to feel comfortable with the new addition.

Thanks for any answers, larry
 

Bob¡¯s suggestion refers to date codes on the components. They are certainly there. They will all largely indicate the same timeframe (usually year and week number) which will give you an idea of the manufacture date of the ¡®scope.

DaveD

Sent from a small flat thingy

On Aug 8, 2019, at 17:29, Lawrance A. Schneider <llaassllaaass@...> wrote:

Thank you Chuck; Very bright and sharp - no halo. Fastest speed is 5 nano - at that speed, trace is easy to see. I hear you admonition; I'll wait a little - maybe never if everything is OK.

Thank you Bob; no revision date shown.

One further question. Is there anything ¡¯special¡¯ about the DM probes? I got 4 P6139a probes with it but no DMM probes. I would think any of my Fluke or other secondary market probes would be OK.

Thank you , larry

On Aug 8, 2019, at 4:57 PM, Bob Albert via Groups.Io <bob91343@...> wrote:

You can approximate the age of the unit by opening it and looking for component date codes. Sometimes on turn-on there is an information screen with a software/firmware revision date.
Bob
On Thursday, August 8, 2019, 01:11:09 PM PDT, Lawrance A. Schneider <llaassllaaass@...> wrote:

Hello all,

My new (to me) 2465BDM just arrived. Turning it on, all passed and gave me four lines - one for each channel.

I tried each channel in turn with my function generator and each worked fine. I will be testing the calibration over time.

What I wanted to know is how to tell the age and turn on times. I thought there was a way of doing so. I can¡¯t find it in the manual. Perchance I¡¯m wrong and there is no way of knowing. Further, I remember reading that those scopes with serial number above B05xxx needed their Caps replaced. My number is B014xxx. Thus, I think I¡¯m OK until I have more time to tear the thing apart.

I¡¯ll be selling my 2465 (300 Meg) as soon as I begin to feel comfortable with the new addition.

Thanks for any answers, larry
Chuck Harris
 

I don't mean to scare you, and certainly not to admonish you.

The case comes off with 8 torx screws through the feet, and two through
the back panel...above and below the plug.

After the back is removed, the case slides off of the back. You have
to watch a couple of cables and spring clips when you slide the case
back on. Don't get aggressive tightening the screws in the plastic panel.

Since your serial number is in the B014 range, A5 capacitor electrolyte
leakage should not be a problem.

Most power supplies will have at least one bad capacitor, typically the
inverter filter for the -15V supply. Its total failure doesn't cause
much, if any, damage.

Enjoy your scope.

-Chuck Harris

Lawrance A. Schneider wrote:

Thank you Chuck; Very bright and sharp - no halo. Fastest speed is 5 nano - at that speed, trace is easy to see. I hear you admonition; I'll wait a little - maybe never if everything is OK.

Thank you Bob; no revision date shown.

One further question. Is there anything ¡¯special¡¯ about the DM probes? I got 4 P6139a probes with it but no DMM probes. I would think any of my Fluke or other secondary market probes would be OK.

Thank you , larry
Chuck Harris
 

I swear I typed 6 torx screws, but my pet sprite changed it
to an 8.

Grrr!

-Chuck Harris

Chuck Harris wrote:

I don't mean to scare you, and certainly not to admonish you.

The case comes off with 8 torx screws through the feet, and two through
the back panel...above and below the plug.
 

My pet sprite (75 year old fingers) screw up everything I type!

Larry

On Aug 8, 2019, at 7:14 PM, Chuck Harris <cfharris@...> wrote:

I swear I typed 6 torx screws, but my pet sprite changed it
to an 8.

Grrr!

-Chuck Harris

Chuck Harris wrote:
I don't mean to scare you, and certainly not to admonish you.

The case comes off with 8 torx screws through the feet, and two through
the back panel...above and below the plug.
 

Great! Congratulations to you and your "new scope"!
Where is this serial number on your scope?
I have 2465 DMS and it comes with some extras in the back, but I can't find
the serial number there.
I'll include a picture what I see on the back of my scope.
Thanks and good luck!
Tony
[image: 20190808_153518.jpg]


On Thu, Aug 8, 2019 at 3:11 PM Lawrance A. Schneider <
llaassllaaass@...> wrote:

Hello all,

My new (to me) 2465BDM just arrived. Turning it on, all passed and gave
me four lines - one for each channel.

I tried each channel in turn with my function generator and each worked
fine. I will be testing the calibration over time.

What I wanted to know is how to tell the age and turn on times. I thought
there was a way of doing so. I can¡¯t find it in the manual. Perchance I¡¯m
wrong and there is no way of knowing. Further, I remember reading that
those scopes with serial number above B05xxx needed their Caps replaced.
My number is B014xxx. Thus, I think I¡¯m OK until I have more time to tear
the thing apart.

I¡¯ll be selling my 2465 (300 Meg) as soon as I begin to feel comfortable
with the new addition.

Thanks for any answers, larry
 

Hi,

I didn¡¯t get the picture?

I have a 2465 BDM and not 2465 DMS of which I know nothing.

My serial number is on the front of the scope.

larry

On Aug 8, 2019, at 8:32 PM, Tony Fleming <czecht@...> wrote:

Great! Congratulations to you and your "new scope"!
Where is this serial number on your scope?
I have 2465 DMS and it comes with some extras in the back, but I can't find
the serial number there.
I'll include a picture what I see on the back of my scope.
Thanks and good luck!
Tony
[image: 20190808_153518.jpg]


On Thu, Aug 8, 2019 at 3:11 PM Lawrance A. Schneider <
llaassllaaass@...> wrote:

Hello all,

My new (to me) 2465BDM just arrived. Turning it on, all passed and gave
me four lines - one for each channel.

I tried each channel in turn with my function generator and each worked
fine. I will be testing the calibration over time.

What I wanted to know is how to tell the age and turn on times. I thought
there was a way of doing so. I can¡¯t find it in the manual. Perchance I¡¯m
wrong and there is no way of knowing. Further, I remember reading that
those scopes with serial number above B05xxx needed their Caps replaced.
My number is B014xxx. Thus, I think I¡¯m OK until I have more time to tear
the thing apart.

I¡¯ll be selling my 2465 (300 Meg) as soon as I begin to feel comfortable
with the new addition.

Thanks for any answers, larry

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