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Old 22nd May 2020, 7:16 am   #1
Chris55000
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Default HP 1710a Oscilloscope Handle parts & Manual Wanted!

Hi!

Has anybody got a HP 1710A oscilloscope handle and it's side caps, spring and other bits I can purchase please?

I'm also looking for a complete copy of the 1710a manual, 01710-90903 – Keysight have excelled themselves with what they've uploaded, absolutely full of toner powder marks on every page, the entire operation section Chapters 1–4 is missing, as are most of the schematic and component layouts – out of 27 diagrams listed, there's only nos. 11, 18 and nos. 21 to 27 in it!

Do Keysight purposely upload such a useless mess, or is it just me being cynical?

The 1710B manual is useless to me as virtually everything is different in the 1710B including the CRT (the 1710B CRT has "flood gun" graticule illumination as opposed to lamps in the 1710A)

Chris Williams

PS!

I tried on the HP group on groups io but even tho' several members said they'd collections of 1710a parts, I don't think anybody bothers with UK members on there!
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Old 22nd May 2020, 8:21 am   #2
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Default Re: HP 1710a Oscilloscope Handle parts & Manual Wanted!

PS!

I have the 1710a oscilloscope so I could make my own diagrams, but that would take a year's hard work and I'd still not be able to recover what information was contained in Chapters 1 to 4 of the original, plus the "Troubleshooting" section at the beginning of Chapter 8.

I've looked in BAMA, k04BB, Vintage Manuals Inc., Tucker Manuals and many more places!

Chris Williams
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Old 22nd May 2020, 10:58 am   #3
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Default Re: HP 1710a Oscilloscope Handle parts & Manual Wanted!

Is the handle like the HP 3771 type comms testers? Just bitzed a couple of them and the bits should still be in the trailer waiting for the scrappy trip.

Cases like the 1725 scopes, but measure the width of the case. I discovered that the Tek 2445 is slightly narrower than the 2440, so handle didn't really fit.
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Old 22nd May 2020, 11:43 am   #4
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Default Re: HP 1710a Oscilloscope Handle parts & Manual Wanted!

Hi!

Honestly I can't be certain as I can't find anything on a HP 3771 is it actually the 37717C you've disposed of?

Chris Williams
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Old 22nd May 2020, 12:39 pm   #5
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Default Re: HP 1710a Oscilloscope Handle parts & Manual Wanted!

PS!

Update – it's the 3771A/3771B manual I needed to look in and it certainly looks like the cabinet width is the same –PM sent.

I'll see what Bob can come up with and update accordingly!

Chris Williams
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Old 22nd May 2020, 12:51 pm   #6
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Default Re: HP 1710a Oscilloscope Handle parts & Manual Wanted!

The 3771 cabinet (and 3770, 3785) has a wide extrusion as the side strut, it has two chromed rails which appear to the outside world with two painted aluminium strips slid in on each side. Two strips because they are interrupted to make a big hole for the boss of the handle mounting.

I don't have a 1710 here, but I've just had a look at a 1740 and a 3580. Both these have different side extrusions, narrower with only a single chrome rail showing to the outside and the handle sits over the rail.

I think the 1710 has the two-rail type extrusion and it may well be the instrument South Queensferry nobbled mechanical parts from. I think there is a good chance that a 3770/3771/3785 handle will fit. Digging out old memories, I think Dave Leahy would have done the 3770 mechanical design which in turn got nobbled for the 3771.

If you have a manual, look up the part number for the handle and the related mounting parts. You'll often see a 5 digit - 5 digit format on HP designed or made parts something like 0xxxx-yyyyy the xxxx digits can be the model number of the instrument the part was made for. If it was only done with one instrument in mind, anyone designing a new instrument might pick up that part and the part number tracing back to the original instrument remained.

Some parts were intended for use across multiple products and were given 4-4 digit part numbers like regular purchased parts but a 5 or a 9 as the first digit was a give-away.

There's a fair bit of structure and info buried in HP part numbers, and no, I don't even own an anorak.

David
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Old 22nd May 2020, 12:53 pm   #7
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Default Re: HP 1710a Oscilloscope Handle parts & Manual Wanted!

Try searching for HP 3771A data line anaylzer, might be one of them.

The HP 1710A manual, I recommend you look for one that covers the serial number prefix of your scope as they often make quite a few design changes over the years. Unfortunately that usually means searching US sites.

BTW Tucker Electronics no longer exist, they closed in 2017.

David
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Old 22nd May 2020, 1:01 pm   #8
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Default Re: HP 1710a Oscilloscope Handle parts & Manual Wanted!

There is a video on youtube, the handle can be seen at about 15.20min, the side parts look very different to other scopes like the 1725A.

https://www.youtube.com/watch?v=ra3AXTjzJWo

Edit: some better pictures of the 1710A scope from that video on ebay completed listings.
https://www.ebay.com/itm/333586476232
Hope it's OK to post this, it has some nice pictures of the inside too, which are also very different to the 1740A/1725A.

David

Last edited by factory; 22nd May 2020 at 1:07 pm. Reason: More Info
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Old 22nd May 2020, 1:18 pm   #9
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Default Re: HP 1710a Oscilloscope Handle parts & Manual Wanted!

Telford Electronics claim to have a service manual for the 1710A, last time I ordered from them it was a copy but a very good copy unlike some other sites.

https://www.telford-electronics.co.u...al.php?alpha=h

David
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Old 22nd May 2020, 2:17 pm   #10
Chris55000
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Default Re: HP 1710a Oscilloscope Handle parts & Manual Wanted!

Hi!

If the 3771a handle bits can be made to fit with a little spot of adaptation or drilling than that'll do me – PM sent to Bob!

I've sent an equiry to T.E. for a Manual, but it's a nuisance having to wait days for them to get back to me, is it only one chap that runs it,?

Chris Williams
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Old 23rd May 2020, 10:29 am   #11
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Default Re: HP 1710a Oscilloscope Handle parts & Manual Wanted!

Photos of handle.

Handle is 32cm inside.

Screws in a bucket with thousands of others, so not sure what size they were.
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Old 23rd May 2020, 11:57 am   #12
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Default Re: HP 1710a Oscilloscope Handle parts & Manual Wanted!

OK, 3770, 3771, 3784*, 3785 all suffix letters, have that handle. We sold a lot of them, they were very successful boxes, so there's a lot of them out there.

Suffix letters said which market they were for, they weren't later versions. A was CCITT, B was for Bell system.

So if you find any of these you're OK. They are specialised testers for phone systems and are about as much use as a chocolate teapot to anyone other than a PTT company, so if you find one, it ought to be cheap. There won't be anyone else competing for it

I collected scrap cabinet parts and built my ATU etc into them.

David

*The R&D project manager of the 3785 and 3784 might be reading this
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Old 24th May 2020, 9:01 pm   #13
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Default Re: HP 1710a Oscilloscope Handle parts & Manual Wanted!

The four screws for the handle are 6x32 UNC x 3/8" long, can't get the two screws/nuts & washer out of the frame but they look slightly bigger possibly 8 UNC. The covers look different on mine (1725A).

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Old 24th May 2020, 9:45 pm   #14
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Default Re: HP 1710a Oscilloscope Handle parts & Manual Wanted!

Take out that centre screw and the detent mechanism will dismantle from the frame. The hole in the handle is so you can remove this one screw on each side and the handle comes away with its pivots, detent mechanism and everything. You can get to this screw once you've unclipped the plastic cover.

The frame side extrusion has two dowel holes and one PEM threaded insert. The detent mechs have dowels to stop them spinning in place, the insert takes that centre screw.

Yes the 1725 has a set of different parts.

David

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Old 25th May 2020, 11:16 am   #15
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Default Re: HP 1710a Oscilloscope Handle parts & Manual Wanted!

It does look like a nut on the inside instead of the PEM threaded insert in my 1725A, I had a quick look inside and could see it spinning with the screw, unfortunately it's not accessible to either tighten or loosen either.

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