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Re: Agilent/Keysigh ESG series CLIP
Guys, On Thu, 20 Mar 2025, 13:55 alberto.vaudagna via , <alberto.vaudagna=[email protected]> wrote:
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Re: HP 8673D synthesized generator - need help identifying the two PC boards attached to A1A11 power amplifier
The lift table sounds like a useful boat anchor manipulation device.? I am of "that age" but am still very good at lifting (everyone is good at something in the gym).? However, sidelined a couple of months due to having to go to the maintenance facility for a shoulder repair for a different injury and the doc telling me no heavy lifting for a bit.? So for now, circuit development and debug of tiny stuff like 0402 SMD parts.
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I have to get into my 8660D which I still like for lower frequency RF work as other more modern units I have (modern is relative) don't go below 300 kHz.? The 8660D mainframe is alright but could use a tuneup but the low frequency plugin has no output.? I will probably need to make an extender.? I do have parts and harnesses from a scrapped 8660 mainframe I grabbed that someone had left as trash at the end of a hamfest so maybe can make an extension cable with those Winshester-looking connectors. Most of the alignments and adjustments in the 8660 can be done without extenders but some steps can't be done without. Due to how busy I am I think this will need to wait a few months but it will happen! Peter On 3/19/2025 4:49 PM, David Feldman via groups.io wrote:
Peter - yes - beast (trivia - back in about 1981 I was one of hundreds of volunteer extras (person-sized bird characters) for a movie being filmed north of Los Angeles called "the beastmaster" - never saw the movie!.) |
Re: 5041-8820 Rear Strap Handle Cap — 3D print files?
Leo, Awesome, looks great. I could have offered a 3D print file for the other end of the handle:? Radu.? On Thu, Mar 20, 2025 at 5:58?AM Leo Bodnar via <leo=[email protected]> wrote:
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Re: 5041-8820 Rear Strap Handle Cap — 3D print files?
开云体育Nice!? What printer and plastic did you use? I just got Catia installed on my machine and starting training (mostly, how to work with the company document management system) so should be able to start making up parts at some point. Peter
On 3/20/2025 8:58 AM, Leo Bodnar via
groups.io wrote:
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Re: Agilent/Keysigh ESG series CLIP
but I really think they are bot the same copy. I mean can that user have begun to sell the Milan version on eBay? Il giorno gio 20 mar 2025 alle ore 12:39 Leo Bodnar via <leo=[email protected]> ha scritto:
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Alberto Vaudagna |
Re: Agilent/Keysigh ESG series CLIP
No, not me.... On Thu, 20 Mar 2025, 12:39 Leo Bodnar via , <leo=[email protected]> wrote:
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Re: looking for service manual for HP4934A
I took a look in my fiche documentation - I do not have anything for the 4934A.
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If you look here in the first pdf (ending 01) -
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You can see a list of op and service documentation published by HP up to November 1985.?
There does not seem to be an entry for the 4934A so it may be covered in another service manual
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Peter |
Re: Agilent/Keysigh ESG series CLIP
I see your point!? I was in possession?for like 10 years of the original schematics from CAD (so no scan and bad quality this time) of the tektronix TDS540 scope that I received directly?from tektronix?after asking gently. I never shared it until the official version was published exactly?for the same reason as you! Now the published version is available?so I should upload them somewhere, I don't really know because I was told to not share them too If I recall correctly. Il giorno gio 20 mar 2025 alle ore 09:59 Milan Vasic via <vasa1958=[email protected]> ha scritto:
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Alberto Vaudagna |
Re: Agilent/Keysigh ESG series CLIP
Hello everyone,
Everyone who purchased the clip E4400-90336 from me (CLIP content attached) was kindly asked to use it for their own private use and not distribute it...which is why I archived it to wait for better days.
MilanOn Tue, Mar 18, 2025 at 2:12?PM Santiago Z via <santiago.zygadlo=[email protected]> wrote:
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Re: E5071C powering down
Hi Sven,
you have to place a new CR2032 on the mainboard, then do a CMOS default and set the correct date/time. Normally, after that all should be OK. I had the same issue on mine, fixed it that way. regards, Jean-Luc ----- Mail original ----- De: "Sven Schnelle" <svens@...> ?: [email protected] Envoyé: Mercredi 19 Mars 2025 17:34:35 Objet: [HP-Agilent-Keysight-equipment] E5071C powering down Hi, bought a E5071C 4-port 8.5GHz VNA. Seller stated that the device does not power up. Arriving home I connected it to power switched it on - it turns on, Fans blowing for 3-4 seconds, no other signs of life, everything switching off. Noticed that if i remove the CMOS battery from the Mainboard (a Radisys Endura LS855 with Agilent patched BIOS), the Analyzer is starting up. It boots Windows XP just fine and the VNA is working. (Luckily the RF ports all seem to work). When shutting down it won't shut down entirely, black screen, and the Fans are still blowing. With the next power cycle i have the problem stated above again, until i remove the CMOS battery again. That even happens without booting Windows XP. So it seems like the BIOS is loading some invalid values into the CMOS RAM. The service guide from Keysight says it should be sent in to replace the CMOS battery, but that's very expensive for a hobbyist. Does anyone know how to get the proper CMOS data restored? I see there's a bioscheck.exe binary in the E5071C folder, but executing that doesn't change anything. Thanks Sven |
Re: looking for service manual for HP4934A
开云体育Have pdf of op/service for the 4935A if that’s any use. Dave, ZL3FJ ? From: [email protected] [mailto:[email protected]] On Behalf Of w7fdd via groups.io ? Hello, Any one have a service manual for a HP 4934A? An electronic copy? Any good ideas where to find either a paper or electronic copy? It is for a TIMS. Transmission impairment measuring set. ? thank you for any help ? Brian |
Re: OPT 003 (48-440 Hz compatible) fan (full size "Muffin" type fan) - replacement requirements?
Unless you plan to operate on 400 Hz AC current, you don’t need a 400 Hz fan. Depending on the instrument, you may be able to get by with a lower-power (quieter fan). HP typically spec’d their stuff to 50C; in a laboratory environment, the temperature should be considerably cooler.? Jeremy? On Wed, Mar 19, 2025 at 1:43?PM David Feldman via <wb0gaz=[email protected]> wrote: Have a failing/failed cooling fan from a HP machine with OPT 003 (400 Hz), which appears to apply to the type of fan installed. |
Re: HP 8673D synthesized generator - need help identifying the two PC boards attached to A1A11 power amplifier
Peter - yes - beast (trivia - back in about 1981 I was one of hundreds of volunteer extras (person-sized bird characters) for a movie being filmed north of Los Angeles called "the beastmaster" - never saw the movie!.)
A recently purchased (earlier this week) VEVOR TFD15 hydraulic lift table has made 1000% improvement in handling these heavy/old machines (8660, 8350, 8673) which use linear/transformer power supplies and are made of 100% pure cast iron straight from the mine. Highly recommend such a thing for those of us "of a certain age" that still wrangle electronics by the metric ton. Determined course of action at this point --- going to build extender mechanism to allow the pictured module to operate outside the synthesizer. 6x2 3.94mm card edge connector, already have PCBs with 3.94mm pitch traces for making these sorts of things, and 14-pin IDC DIP male plugs to make the 2-port ribbon cable that appears to go off in the direction of the YTO, are both on order, couple weeks til delivery, so machine is back to it's "hangar queen" location until I am ready for testing. Barring any other adds to this discussion, I'll surface again with the topic once I am able operate the module(s) outside the synthesizer chassis. |
OPT 003 (48-440 Hz compatible) fan (full size "Muffin" type fan) - replacement requirements?
Have a failing/failed cooling fan from a HP machine with OPT 003 (400 Hz), which appears to apply to the type of fan installed.
Are there any requirements (trying remember undergraduate EE class that described analysis of induction motors - does that describe a typical cooling fan of this sort? - but that is digging waaaaaaaaaaaaaaaaay back to the 70s... Should a generic 120 VAC 60 Hz fan of sufficient air flow be acceptable, or do I need search for a fan designed to support 400 Hz?) |