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HP 70K/HP 70000 Modular Measurement System Thread

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Paul B:
High Peter
Sorry for the long delay and any questions I might repeat
I have recently gon through COVID not a problem but I think I now get out of breath quicker

You refer to a link in your past Email but unfortunately I cannot open it can you please advise me
As I want to recap 3 off 70900 local oscillators  hopefully  return them back to good working order

Failing that has anyone found a replacement yig for the 70900 units
Regards Paul B     paul@bicknells.f2s.com     cell    + 44 (0) 7719 208 048

TerraHertz:
Possibly, I may have caught the HP 70000 MMS bug. Catching covid in March wasn't a problem, but I think the MMS bug may be quite harmful. Myo-wallet-itis, or even SADS. (Sudden Affordability Death Syndroms)

Just arrived: a 70001A Mainframe with 70841B Pattern Generator and 70311A 3.3GHz Clock Source.
Heavy thing, 70lb.  Naturally the US seller's packing was laughably inadequate and it got some dinged corners in the USA leg of its journey. After it reached the reshipper in LA I had it repacked in foam-in-place, so no more damage on the way to Sydney.

Most physical damage is minor and already fixed, except for one thing. The modules are held in place by diecast metal screw retainers. Some box-drop impact sheared one of these retainers in half.

These have an 8mm hex socket on the front and some unidentified thread internally. The mating screws are 5.8mm OD, 24 teeth/inch.   Thanks HP, for not using a standard thread like M6 or 1/4" Whit.

Well where am I going to find a replacement retainer? Any ideas?

If someone has a broken HP 70000 system module they'd sell for spares, please let me know.

Meanwhile it will be a while before I can test this thing. I have some manuals, more to find. I got the Artek CLIP packages for the 70001A and 70004A mainframes.  In taking this mainframe apart to fix the metalwork I notice the power supply board has multiple RIFA caps in the mains input section. Those have to be replaced before I even turn it on. I have some HP 9000 systems but all still need work such as adding mass storage.

tautech:
Any chance you had the manuals for these before purchasing one ?  :-DD

SoundTech-LG:

https://i.ebayimg.com/images/g/9PgAAOSwsNxi5qfq/s-l1600.jpg




https://www.ebay.com/itm/334518729652?hash=item4de2debbb4:g:9PgAAOSwsNxi5qfq&amdata=enc%3AAQAHAAAAoIdnrID8wtr4whBb44jJidLvKHV%2FAITKiZsMPpsnftHXtQfk4vPE0wYq4e0%2Fq7rigspPbCojtfW8Ay%2F41huus1hiy8qqjn%2B6tdl%2BedjSJQ8FGjSo%2B7z64LvWXG2XZw4obTyCUBP6xUBJMw2oCnZojQJ9snHtlDoP9LL6gfylM0ION0k0UbygG0qdp17jEwY%2Fht4hUs1aiqGmrfljgKjjym0%3D%7Ctkp%3ABk9SR4CjxJ3gYA

TerraHertz:

--- Quote from: tautech on September 03, 2022, 01:20:20 am ---Any chance you had the manuals for these before purchasing one ?  :-DD

--- End quote ---

Some of them. More an exercise in checking out the availability of 70000-series manuals in general, and seeing what kind they are. A: well past the era when HP produced useful service manuals. Whether I can find CLIPs for these modules, don't know yet.

Most of my time lately has been going into something else. Old mum's health declined, taken to hospital then moved to nursing home, bedridden and declining rapidly. Me being the only one to clear out her house urgently and arrange the house sale. Now my place is stuffed full of multiple generations of family relics, with the job of culling it down still remaining. That was the house I mostly grew up in too. Sad times recently.

That mountain of manuals in the USA are still there, still mine. But I need to go there to handle the work myself, and a certain entity demands something before granting a visa, that I'm certainly not willing to accept. So just have to wait till something changes.  Which comes first - nuclear WWIII, Neuremburg II trials, total economic collapse, civil war, or I scrape in and rescue the manuals, who knows.


Added:
SoundTech-LG, brilliant, thank you. Bought. I'm a bit overwhelmed with worries lately. That's my excuse for not thinking of that. I hope they are the same as the heavy metal module ones. It would seem sensible that they would be, but with HP... fingers crossed.

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