I'm not familiar with the 8663A, but I did have a problem once on my 8780A where the keypad didn't respond.? The problem turned out to be a broken copper leaf spring underneath the "8" key.? The key contact was being shorted closed and to the instrument, it appeared that the "8" key was always being depressed.? To the user, the entire instrument keyboard appeared as non-responsive.

After I figured out the problem, I realized why a single "8" always appeared on the display after the instrument powered up.? Doooohhh! :-)?

Appreciate your help!

So, I tried booting the scope from a 12V bench supply.

Unfortunately no joy...

The thing draws about 2 Amps while doing nothing, is that reasonable (label says 100W on back panel) ?

On 6. Jan 2022, at 14:58, Tommy <tommy@...> wrote:

Thanks for the suggestion but no sleep mode I'm aware of.

Not necessarily a sleep mode.

When the on-off-switch does not cut mains power completely it means the unit is not off but in a standby-mode where some electronics are always active.

cheers
Martin

Thanks for the suggestion but no sleep mode I'm aware of.

On Thu, Jan 6, 2022 at 12:29 AM, tmillermdems wrote:

?

Main board has a battery, CR2032, I measured battery to 3.05V while in place.

Was the power on or off when you measured the cell voltage?

Scope was powered off.

Enough of this, both of you.

-Dave, list moderator

On January 5, 2022 9:10:35 PM "cheater cheater" <cheater00social@...> wrote:

I don't think that was clear enough - consider taking out a full page
ad in the New York Times

On Wed, Jan 5, 2022 at 7:57 PM Sean Turner via groups.io
<sdturne@...> wrote:

I can choose not to participate.

Sean

On Wed, Jan 5, 2022 at 10:26 AM, cheater cheater wrote:

The owner of every forum is exempt from every rule they set, and you
can't do anything about it. This forum, unlike others, states it
outright. I put this rule in explicitly so people who make trouble
don't start contrived technical legal babble arguments about what I
may or may not do when I'm moderating the platform. This prevents any
"gotcha" moments. This sort of trolling strategy comes up often enough
on well populated forums that it's a real time waster.

For example, let's say someone said a racist cuss word. I'll kick them
off saying "you're getting kicked off because you said X". Then
they'll start arguing that I should kick myself off, or something
equally stupid. I've had this happen a million times and I can't be
bothered with that. Hence rule 6.




On Tue, Jan 4, 2022 at 7:32 AM Sean Turner via groups.io
<sdturne@...> wrote:


Rule #6: "The server owner is exempt from all rules for obvious reasons"

I'll pass.

Sean

--
Dave McGuire, AK4HZ
New Kensington, PA

I don't think that was clear enough - consider taking out a full page
ad in the New York Times

On Wed, Jan 5, 2022 at 7:57 PM Sean Turner via groups.io
<sdturne@...> wrote:

I can choose not to participate.

Sean

On Wed, Jan 5, 2022 at 10:26 AM, cheater cheater wrote:

The owner of every forum is exempt from every rule they set, and you
can't do anything about it. This forum, unlike others, states it
outright. I put this rule in explicitly so people who make trouble
don't start contrived technical legal babble arguments about what I
may or may not do when I'm moderating the platform. This prevents any
"gotcha" moments. This sort of trolling strategy comes up often enough
on well populated forums that it's a real time waster.

For example, let's say someone said a racist cuss word. I'll kick them
off saying "you're getting kicked off because you said X". Then
they'll start arguing that I should kick myself off, or something
equally stupid. I've had this happen a million times and I can't be
bothered with that. Hence rule 6.




On Tue, Jan 4, 2022 at 7:32 AM Sean Turner via groups.io
<sdturne@...> wrote:


Rule #6: "The server owner is exempt from all rules for obvious reasons"

I'll pass.

Sean

开云体育

Greetings from Sweden, Scandinavia!

?

I'm Tommy, a new member here on groups.io although in the distant past a member at Yahoo.

?

?

Main board has a battery, CR2032, I measured battery to 3.05V while in place.

Was the power on or off when you measured the cell voltage?

Regards, and happy new year.

The battery maybe a little weak, what info is lost if I replace it, cal data or user settings ?

So, I need help, any and all comments on what I measured and what to try next, please.

._,Waew_._,_

Thanks Glen for your answer and yes I was afraid of that.

I'll give Keysight a call anyway.

Interesting link, not for the fainthhearted, I'll have to digest that, slowly...

On Wed, Jan 5, 2022 at 11:10 AM Tommy <tommy@...> wrote:

Greetings from Sweden, Scandinavia!

I'm Tommy, a new member here on groups.io although in the distant past a member at Yahoo.

On my bench I have several "HPAK" instruments, mostly HP brand, aged for 25+ years...

Yesterday I needed a scope and powered up the Agilent DSO-X 3012A, fan starts, Run/Stop blinks twice, entry knob symbol and intensity key blinks, channel 2 button lights up and the ref/math/digital/serial buttons come on, then nothing else.
No display and no reaction to button presses.

There are known issues with boot flash corruption on some models of
Keysight scopes. At some point Keysight would fix the scopes even if
they were out of warranty if they had this particular issue. No idea
if that is still the case. There were subsequent firmware updates
which attempted to reduce the possibility of this issue. If you can
get the scope into the state where it boots again, try to update to
the latest firmware while it is booted.

Several discussions about this issue on the eevblog forum, for example:
!/msg3449446/#msg3449446

I can choose not to participate.

Sean

The owner of every forum is exempt from every rule they set, and you
can't do anything about it. This forum, unlike others, states it
outright. I put this rule in explicitly so people who make trouble
don't start contrived technical legal babble arguments about what I
may or may not do when I'm moderating the platform. This prevents any
"gotcha" moments. This sort of trolling strategy comes up often enough
on well populated forums that it's a real time waster.

For example, let's say someone said a racist cuss word. I'll kick them
off saying "you're getting kicked off because you said X". Then
they'll start arguing that I should kick myself off, or something
equally stupid. I've had this happen a million times and I can't be
bothered with that. Hence rule 6.




On Tue, Jan 4, 2022 at 7:32 AM Sean Turner via groups.io
<sdturne@...> wrote:

Rule #6: "The server owner is exempt from all rules for obvious reasons"

I'll pass.

Sean

Hi Matt

My service manual P/N is 08663-90071, covering from 2234A to 2927A and found nothing about that keystrokes :(
However, my unit has serial 2846A opt 002, if you need data or whatever for comparison, tell me. Maybe I can help ;)

Regards,
R.

Does anyone have a copy of the 54720 or 54710 firmware disk? If I
could take a look at that, I can probably figure out how to make a
54717a eeprom image for you.

On Tue, 4 Jan 2022 at 16:55, Arkadiusz Gibes via groups.io
<arkadiusz.gibes@...> wrote:

I already found the 54712 eeprom image that you shared. Do you have any possibility, to download same firmware from the other unit ? I would like to compare. I have one 54712 unit, but still don't have programmer.

W wtorek, 4 stycznia 2022, 16:46:54 UTC, Ovidiu Popa [Business] <ovidiu.popa@...> napisa?(-a):


Sorry, no, I gave up and wrote off the 54720D. I have too many scopes anyway, from 100MHz to 50GHz, not enough incentive to spend more time on this. Meantime, watching for a 54717A, ideally someone owning one could dump the EEPROM. I know if I'd get one, this would be the first thing I'd do, this HP money grabbing calibration abomination has to end.

If someone wants to pick up, I can forward the 54712A EEPROM binary.

开云体育

On Tue, Jan 4, 2022 at 04:58 PM, nigel adams wrote:

9825 calculator

We used 9825s with automated headset test equipment at Plantronics in the 1980s. ?All of the test equipment and sound sources were connected via HPIB.