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How to recover the video of my graphic 54810-66505 card

 

Hello,
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I have picked up an oscilloscope 54810
I have some problems on it, but it’s settled.
Meanwhile, I tried to put the graphics card 54810-66505 on another motherboard (which also had its video output built in), for tests.
Since the video card no longer provides output. The screen is black.
If I put an old video card trident, the screen works.
I think my manipulation must have "written" information in the chip 65550. (Some register?)
What manipulation could reactivate it??
NB: the card is visible in the bios pnp/pci parameters
Your opinion.?
cdt
Re: E4402 help please VCO Unlock.

 

No prob, though I don't really hold out any hope of a reply, i've since seen several posts on other forums all of which say people have emailed him with questions about his Youtube videos and asked for clarity etc, but it looks like he doesn't reply to posts or emails unfortunatly as nobody seems to have had any replies from him.
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Tony
Re: 8566/8568 IF/Display unit - Digital section interchangeability between generations?

 

Begin Nostalgia...
{
The specific analyzer was used by myself when I was employed
at the company that had purchased it some time around 1982.
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40 years later it appeared at an auction for electronics
arranged by the university which I attended many years ago.
It was being auctioned as "broken" . I got it at a reasonaable price
and I managed to fix it the first time (IF filter board).
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Same thing with a broken 5065A Rb fq standard. I encountered that one
during a school visit to Onsala Space Observatory around 1970.
It was scrapped ca 1987 (Rb cavity failure) and put in a storage
room. Around 2020 as an employee I found it, salvaged it
an was able to repair it.
}
End nostalgia
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Ulf Kylenfall
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Re: always-on AC power

 

Usually the transformer is active to power an oven oscillator.
I have also seen equipment with the power switch mounted in the back and a long shaft connecting it to the front.
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ed
Re: Loud HP5328A Counter

 

Magnétostriction noise is at harmonics of the mains , eg 100, 150,200....Hz in UK, EU.

It is nonlinear with mains voltage, increasing rapidly at high mains. What's your mains voltage?

Jon
Re: Free for postage: HP power supply card, p/n 06827-60022

 

Is still available?
?
Re: Loud HP5328A Counter

 

Are you sure that it is the main transformer? There are two additional smaller transformers in a black case on the board.
Ralf
Re: Loud HP5328A Counter

 

Hi Anders,
when repairing TV sets in the 80ties or? 90ties we used a kind of a thick paint spray especially for noisy coils.?
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You can try to tighten the sheet metal package and use a transparent thermoresistant paint.
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Sometimes when changing the load or when recapping some psu's start making noise. Some manufacturers have special instructionsheets with infos on? modifiying e.g. output coils in psu's as an update.
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I have some transformers from spare 5328A's. I don't remember whether they were loud. But I can send them to you, of course free of charge.
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I was working on an 5328A as well. It was faulty and now working again. It has some options and an 10Mhz oven. I just tried a cheap chinese 10Mhz TCXO, which I glued on a 15 pin 3.96 pitch piece of an old PCB.
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Works fine so far with minor changes.? The original 10544A has an 1Vss output into a 50 Ohm load.??
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Ralf
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Re: VFD for Agilent 53132A

 

More details on that replacement are at
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I've bought one and it looks well made, but I haven't fitted it yet.
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Re: Price of the 54540 oscilloscope

 

Thanks for answering. The 54540 should have been produced from 1993 to 1998 but is not present in the 1993 catalog and 1994, 95 and 96 catalog are not present in the hparchive. The only 1997 catalog has no prices.
Where did you find the 1997 catalog with prices?
You say that "The HP Archive also has many of the product note, bench briefs, service notes, HP Journal, etc." but I could find nothing about the 54000 series of oscilloscopes. Did I something wrong?
Thanks
Gianni
Re: what were the HP/Agilent oscilloscope models / mainframes that allowed at least 1 Gbps serial signal sampling?

 

You could use the differential probes like 1168B InfiniiMax II and alike (there are many to choose from).
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The problem of measuring the Gbps/GHz digital signals is that the distortion of the probe on the measured signal is too high, so you don't actually know what your signal actually looks like. The only way is to route your differential signal via two coax cables directly to the scope's inputs. But is this what the FPGA will see at its inputs? Not really, as the scope's input is far better matched as the FPGA pins ;)
Woohoo, tricks everywhere in the high speed digital measurements...
Re: Loud HP5328A Counter

 

True. It is rarely used so I guess I can power it up beforehand in those case. I will try retightening though. I guess a replacement transformer can be difficult to obtain.
Re: VFD for Agilent 53132A

 

Take a look at this replacement LED display:
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always-on AC power

 

I noticed that 3435A and 3466A DVMs, plus the 5316A counter, and presumably other models, are set up such that AC power is *always* applied to the transformer - the power switch only controls DC power. Therefore, my 3466A has been "on" (sort of) for several years without my knowledge.
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Why?
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I believe the reasons are:
- Some counters and such have crystal ovens that are intended to stay on.
- In the 3466A and 3435A, the reason is because of the battery option, so that the battery will charge with the switch Off. Note that in these units, an entire DC regulator circuit is alive at all times.
- My 5316A counter does not have an oven, but there is an Option for a 'better' time base with an oven, so I assume that's the reason.
- Another, perhaps less likely, reason could be to avoid the need to run 120VAC wiring from the back to the front of the cabinet, past sensitive analog circuits.
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Anyway, you *may* not want to leave some of these units plugged in when not in use, given the old components and such.?
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Pete
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Re: Activate E4403B color screen option

 

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Tom - Yes, floppies. The unit is picky about the format. I found the best way is to use the SA itself to format the discs. It also seems picky about the RAM used. See attached.
As I recall, you might also have to upgrade the ROM card! (you need more capacity to flash the upgrade)

Good luck!
Mark

From: [email protected] <[email protected]> on behalf of Tom B via groups.io <tbryan@...>
Sent: Tuesday, February 4, 2025 12:53 PM
To: [email protected] <[email protected]>
Subject: Re: [HP-Agilent-Keysight-equipment] Activate E4403B color screen option
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Thank you all.?? Another member sent me the key.? I would also need to update the firmware (9 floppies, is there an easier way????) and add some ram.?

Tom

On 2/4/2025 2:16 PM, hardyhansendk via groups.io wrote:

Sorry,just looked it up….no need for serial nr

Hardy

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Fra: [email protected] <[email protected]> P? vegne af hardyhansendk via groups.io
Sendt: 4. februar 2025 19:57
Til: [email protected]
Emne: Re: [HP-Agilent-Keysight-equipment] Activate E4403B color screen option

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I guess you also have to give the serial nr.

Not home right now—will have a look tomorrow.

Hardy

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Fra: [email protected] <[email protected]> P? vegne af jmr via groups.io
Sendt: 4. februar 2025 18:17
Til: [email protected]
Emne: Re: [HP-Agilent-Keysight-equipment] Activate E4403B color screen option

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You need to post up the eight digit HOSTID number of your analyser to whoever does this for you. Posting up any existing option numbers and keys for your analyser would help as a confidence checker.?

E4407B-10.pdf
E4407B-10.pdf

Re: 8566/8568 IF/Display unit - Digital section interchangeability between generations?

 

The 2 interconnect cables 85662-60093, 85662-60094 (85662-60220, has a SMA- f connector for the 85685A) are interchangeable between the 8566A/B, 8568A/B models.
Don Bitters
Re: 5345A electronic counter *restoration adventure*

 

I have one that I got for $20 years ago at a HAMfest, not working.
The fan bearings were bad - it would barely turn. Replaced the fan.
One of the 15V rails was dead (I forget which one). I replaced it with a 7815 or 7915. Seemed to work fine, I use it occasionally, and the 10 MHz oscillator is very good.
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Pete
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Re: Price of the 54540 oscilloscope

 

Per the HP Memory project the 54540A o’scope was introduced in 1994. I would check that year catalog for the intro price. Could not find that year catalog there. Also checked the hparchive.com site no HP 1994 catalog there, but there is a 1997 HP catalog there with the 54540A listed with all of the specs. and features. The HP Archive also has many of the product note, bench briefs, service notes, HP Journal, etc. for both instruments and computer (workstation) stuff for quite a few years. Another very useful site.
Could not find an HP 1994 catalog price list. I suspect it was in the $5k-7k USD range at introduction.

Don Bitters
Re: 5345A electronic counter *restoration adventure*

 

Seems reasonable process.? Caution - be sure to check that the time gate control (a variable resistor with a switch) switch section is functioning properly.? The symptom that I've seen is? that the counter counts for 1gate? cycle and then fails to gate a second time.? Easy to check, just turn the control full cw and see that the switch contacts close.? I chased this problem for several days (a long time ago).
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The 5345 is well worth restoring (IMO) - I have all the frequent extension modules and prefer the 5345 over more modern counters.
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Cheers!
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Bruce
Re: Price of the 54540 oscilloscope

 

Thank you. "You just saved me a lot of investigative time" [paraphrased, or maybe quoted, from Firesign Theatre].

DaveD
KC0WJN


On Tue, Feb 4, 2025 at 15:44 pianovt via <pianovt=[email protected]> wrote:
The last catalog with the 54540A appears to be from 1997:
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54520A? $9500
54522A? $13900
54540A? $15000
54542A? $19950
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Vladan
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