Forums

HP 1722A

Started by Michael Robinson July 7, 2013
A guy clearing out his deceased father-in-law's basement let me have an HP 
1722A oscilloscope.  It powers up, and responds to signals.  I haven't 
tested all the functions, but the basic stuff works.  I'm thinking of 
selling it.  How much is a working 1722A worth? 


Michael Robinson wrote:
> > A guy clearing out his deceased father-in-law's basement let me have an HP > 1722A oscilloscope. It powers up, and responds to signals. I haven't > tested all the functions, but the basic stuff works. I'm thinking of > selling it. How much is a working 1722A worth?
Not a lot. On eBay, probably $150 if it's in good shape. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 USA +1 845 480 2058 hobbs at electrooptical dot net http://electrooptical.net
On Sun, 7 Jul 2013 17:10:14 -0400, the renowned "Michael Robinson"
<kellrobinson@yahoo.com.no_spam> wrote:

>A guy clearing out his deceased father-in-law's basement let me have an HP >1722A oscilloscope. It powers up, and responds to signals. I haven't >tested all the functions, but the basic stuff works. I'm thinking of >selling it. How much is a working 1722A worth? >
Below is a link to a 1974 HP Journal that will give you the skinny on the 1722A's far out capabilities. Catch you on the flip side. http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1974-12.pdf Best regards, Spehro Pefhany -- "it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
On Sun, 7 Jul 2013 17:10:14 -0400, "Michael Robinson"
<kellrobinson@yahoo.com.no_spam> wrote:

>A guy clearing out his deceased father-in-law's basement let me have an HP >1722A oscilloscope. It powers up, and responds to signals. I haven't >tested all the functions, but the basic stuff works. I'm thinking of >selling it. How much is a working 1722A worth?
There was only one offered on eBay since January and it's an HP1722B. <http://www.ebay.com/itm/251276017334> Note the mangled vertical gain knobs and shafts on both channels. Also the broken "foot" on the back (where the power cord is wrapped). They were asking $195 plus $52.25 shipping (ouch) and it didn't sell. -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558
On Sun, 07 Jul 2013 17:48:17 -0400, Spehro Pefhany wrote:

> On Sun, 7 Jul 2013 17:10:14 -0400, the renowned "Michael Robinson" > <kellrobinson@yahoo.com.no_spam> wrote: > >>A guy clearing out his deceased father-in-law's basement let me have an >>HP 1722A oscilloscope. It powers up, and responds to signals. I >>haven't tested all the functions, but the basic stuff works. I'm >>thinking of selling it. How much is a working 1722A worth? >> >> > Below is a link to a 1974 HP Journal that will give you the skinny on > the 1722A's far out capabilities. Catch you on the flip side. > > http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1974-12.pdf >
I remember shirts like that. -- Tim Wescott Control system and signal processing consulting www.wescottdesign.com
Jeff Liebermann wrote:
> > On Sun, 7 Jul 2013 17:10:14 -0400, "Michael Robinson" > <kellrobinson@yahoo.com.no_spam> wrote: > > >A guy clearing out his deceased father-in-law's basement let me have an HP > >1722A oscilloscope. It powers up, and responds to signals. I haven't > >tested all the functions, but the basic stuff works. I'm thinking of > >selling it. How much is a working 1722A worth? > > There was only one offered on eBay since January and it's an HP1722B. > <http://www.ebay.com/itm/251276017334> > Note the mangled vertical gain knobs and shafts on both channels. Also > the broken "foot" on the back (where the power cord is wrapped). > They were asking $195 plus $52.25 shipping (ouch) and it didn't sell.
Here is a free PDF of the service manual: <http://www.ko4bb.com/Manuals/HP_Agilent/HP_1722A_Oscilloscope_Service_Manual.pdf>
On Sun, 07 Jul 2013 23:29:49 -0500, Tim Wescott
<tim@seemywebsite.please> wrote:

>On Sun, 07 Jul 2013 17:48:17 -0400, Spehro Pefhany wrote: > >> On Sun, 7 Jul 2013 17:10:14 -0400, the renowned "Michael Robinson" >> <kellrobinson@yahoo.com.no_spam> wrote: >> >>>A guy clearing out his deceased father-in-law's basement let me have an >>>HP 1722A oscilloscope. It powers up, and responds to signals. I >>>haven't tested all the functions, but the basic stuff works. I'm >>>thinking of selling it. How much is a working 1722A worth? >>> >>> >> Below is a link to a 1974 HP Journal that will give you the skinny on >> the 1722A's far out capabilities. Catch you on the flip side. >> >> http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1974-12.pdf >> >I remember shirts like that.
Such shirts are still being sold: <https://www.google.com/search?tbm=isch&q=mens+polka+dot+shirt> -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558
On 7/7/2013 2:10 PM, Michael Robinson wrote:
> A guy clearing out his deceased father-in-law's basement let me have an HP > 1722A oscilloscope. It powers up, and responds to signals. I haven't > tested all the functions, but the basic stuff works. I'm thinking of > selling it. How much is a working 1722A worth? > >
I still have two functional 1725As. The problem is those old scopes have hybrids in them. You need a spare scope to keep them going. Actually I bought one working 1725A years ago. I found a cheap junker for parts. My junker ended up supplying parts for someone elses 1725A. [Gratis on my part because I'm just sooo nice.] So when the person wanted to get rid of that 1725, I figured I better buy it since it had all my parts in it anyway. Plus having a spare functional 1725A kept the other scope scared shitless of being a parts scope, and then it never quit. But I think I paid $100 15 years ago. Today you would be far better off just putting the money into a Rigol than getting a 70's era HP scope. I've turned down working Tek 7904s with all the plugins for $150. And that was with the cart included. [You need the cart for those boat anchors.] But the 1722 is like the 1725 in that they are reasonably high bandwidth. Sometimes it is nice to have an analog scope as a sanity check. The delayed sweep is kind of funky on those old HP scopes. They weren't particularly popular when they were new. The trigger was much maligned, but I never found it to be as horrible as some stated.
On 7/8/2013 1:43 AM, miso wrote:
> but I never found it to be as horrible as some stated.
High praise indeed! -- Rick
On 7/8/2013 7:10 AM, rickman wrote:
> On 7/8/2013 1:43 AM, miso wrote: >> but I never found it to be as horrible as some stated. > > High praise indeed! >
Well, the Tek scopes of that era were a bit better on the trigger. But the talk around the water cooler was the HP scopes didn't work at all, and that wasn't the case. The Tek 465 was basically the workhorse at the time. Or at least the 400 series. I may not have the exact timeline, but the 465 was a late 70's scope.