Joel,

1) no worries
2) OK, I'm not sure how I didn't put 2+2 together on that but it makes perfect sense now. The 427A has a log scaled resistance scale!
3) A1TP1/A1Q2 emitter (in R mode, with a 1K resistor connected) shows a ~175 mVpp (~62 mVrms) clean sine @ 12.37 KHz.

Sean

Hello Sean,

I'm answering your questions out of sequence, but I'm sure you'll be able to make some sense out of this !

* I wrote about the emitter of A2Q2 but I meant A1Q2, I'm sorry for the typo.
* The 4332 has linear scales, so it's normal for the ohmmeter function to "peg" the needle if the input is open-circuit. Of course, "infinite" is way above full-scale!
* Since the ohm-meter is *somewhat* functional but reads a resistance value which is much too low, I believe there's something wrong with the oscillator. My 4332A puts out a 77mV signal at the INPUT terminal, a point where you're seeing only 12mV. Of course your mileage may vary, but I'd suggest we first look at the oscillator. It's described in the manual on page 4-3, paragraphs 4-11(a) and 4-11(b). Please probe the signal at A1 TP1 or the emitter of A1Q2, which is the oscillator output. Paragraph 4-11(b) says there should be 70mV across A1R37. Is the amplitude OK ?

If the amplitude is too low but the signal still looks like a clean sinewave, the next step will be to look at the rectifier A1IC2 and the voltage comparator A1IC3 which control the oscillator amplitude via A1Q1 (a FET which is operated as a variable resistance to control oscillator amplitude). For example, a fault around A1IC3 would cause an error in oscillator amplitude, similar to what you're seeing. But I'm thinking aloud here ...

So, please let me know what you see. And, just as a matter of personal curiosity, in which timezone are you ?

Sincerely,

Joel Setton

A ghost image is a backup (full disk or only the partition) made by Norton ghost a DOS later Windows application (Norton later Symantic), it uses a proprietary technology to back up the disk.
You can't use dd to restore a ghost image.

-Rik

-----Oorspronkelijk bericht-----
Van: [email protected] <HP-Agilent-Keysight-
[email protected]> Namens Chuck Harris
Verzonden: vrijdag 3 april 2020 15:22
Aan: [email protected]
Onderwerp: Re: [HP-Agilent-Keysight-equipment] First Gen HP 54810A with
dead HD, Got ISO 3.5, Any way to write it to a drive?

dd simply copies the disk exactly as the data appears on the drive. It is used in
forensics to clone drives from crime scenes as it makes an exact copy down to
the partition tables, and bad block tables.

What is your definition of a ghost image?

I recall it to be an exact clone of the drive.

-Chuck Harris

Rik Bos wrote:

You're right but dd won't do a ghost image.




-Rik

-----Oorspronkelijk bericht-----
Van: [email protected] <HP-Agilent-Keysight-
[email protected]> Namens Chuck Harris
Verzonden: vrijdag 3 april 2020 15:22
Aan: [email protected]
Onderwerp: Re: [HP-Agilent-Keysight-equipment] First Gen HP 54810A with
dead HD, Got ISO 3.5, Any way to write it to a drive?

dd simply copies the disk exactly as the data appears on the drive. It is used in
forensics to clone drives from crime scenes as it makes an exact copy down to
the partition tables, and bad block tables.

What is your definition of a ghost image?

I recall it to be an exact clone of the drive.

-Chuck Harris

Rik Bos wrote:

You're right but dd won't do a ghost image.




-Rik

You're right but dd won't do a ghost image.




-Rik

The utilities for cloning any drive come as the standard unix
dd in all linux and unix machines.

-Chuck Harris

ujonsson@... wrote:
> On Thu, Apr 2, 2020 at 02:26 PM, David DiGiacomo wrote:
>
>>
>> hard drive t
>
> Thanks!
>
> I think Ghost run under DOS. Was probably 25 years since I used it.? I never used it for cloning a drive that was not the primary drive but 25 is a long time... I might actually have an original program in a envelope somewhere.
>
> I tried to run the GHOST.EXE under vDOS but that did not work,
>
> I get CauseWay Error 07 : Unable to control A20 when trying Ghost under vDOS.? I will try to see if it can run on a XP machine.
>
> Ulf
>

On Thu, Apr 2, 2020 at 02:26 PM, David DiGiacomo wrote:

hard drive t

Thanks!

I think Ghost run under DOS. Was probably 25 years since I used it.? I never used it for cloning a drive that was not the primary drive but 25 is a long time... I might actually have an original program in a envelope somewhere.

I tried to run the GHOST.EXE under vDOS but that did not work,

I get CauseWay Error 07 : Unable to control A20 when trying Ghost under vDOS.? I will try to see if it can run on a XP machine.

Ulf

?

On Thu, Apr 2, 2020 at 06:46 PM, Glen Slick wrote:

nd if you attach

Interesting... Yes, there are two IDE headers. Luckily I had a DVD unit from around 2000 and a cable but the un-lucky thing is that the IDE header on the motherboard have all pins populated... The IDE cable I found in my 2000 vintage machine has a missing hole to prevent it from going in backwards.? Not sure when that change was.? The first machine I built was in 98 and that had SCSI... There is a full 40 pin ribbon cable going over to a board and the hard drive connects to that.card.

It turned out that I don't have a XP machine that runs.? I tried a few versions of Ghost but no luck getting them to run.? I will look around for a old machine.? I did find a similar vintage hard drive. Its a bit larger than the original but from around 2000. I found it in a old USB hard drive.

Chuck,

That is page 1-3 of the document I referenced in my post. Neither of my 851x A/B test sets has the source interface. However, I just noticed a note on that page that the source interface is only used with the 8516A. The figure is much too busy.

You don't mention the J10/J11 test set interconnect in your list. There is no display on the 83631B, so without connecting it to the 85101A & 85102A there is no way to get anything displayed.

Reg