Re: [neonixie-l] Re: Jazzed this weekend project fixed HP 3456A bench MM!

[Bill Notfaded]

Ironically many of the Agilent fakes actually work... some even work with 
linux ok and all of the Agilent tools!  It's amazing how some of this stuff 
goes when it's made in a certain country o.O!  I've done quite a bit of 
research into these and the quality varies considerably.  Not the trick is 
to find a good one or a real Keysight/Agilent one that's used.  As you can 
see a real Keysight GPIB-USB is almost 600$:  
https://www.keysight.com/en/pd-851808-pn-82357B/usb-gpib-interface-high-speed-usb-20?cc=US=eng
 

Bill

On Tuesday, August 13, 2019 at 10:29:12 AM UTC-7, Robert L wrote:
>
> Good heads up about the fakes out there! Wouldn't have thought of that...
>
> Bob
>

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Re: [neonixie-l] Re: Jazzed this weekend project fixed HP 3456A bench MM!

[Robert L]

Good heads up about the fakes out there! Wouldn't have thought of that...

Bob

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Re: [neonixie-l] Re: Jazzed this weekend project fixed HP 3456A bench MM!

[Bill Notfaded]

Thanks Bob.  I've noticed there are many counterfits of even the agilent
GPIB in interface.  It appears many of them work just fine too even with
the manufacturer drivers apparently:
https://www.eevblog.com/forum/testgear/flood-of-new-agilent-82357b-gpib-usb-adaptors-on-ebay-the-real-deal/

Crazy how many variants it looks like there are!!!  They pump out these
fakes left X right!

Bill

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Re: [neonixie-l] Re: Jazzed this weekend project fixed HP 3456A bench MM!

[Robert L]

Hi Bill,

I *REALLY* think an off the shelf USB-GPIB interface on a reasonably 
current computer will be the way to go. There's so much more involved than 
just the hardware interface! Having a system where the various software and 
hardware pieces play well together is no small accomplishment. I'll also 
mention that network accessed instruments are also in the mix... One 
project I was recently working on used LAN access to a R instrument with 
a USB-GPIB link to a couple of HP instruments... One 82357x interface with 
the GPIB instruments daisy chained off that one port.

Off all the places where I would choose to put my efforts, duplicating the 
Keysight and R tools would not be my first choice! Then again, these are 
tools of my trade and my employers would show me the door if I wasn't 
finding efficient ways to accomplish goals. Your objectives and choices for 
a hobby will be less constrained!

The Keysight 82357A/B USB-GPIB interface referenced above is a known good 
solution. I have multiple copies at work and here at home... and have been 
using them for years!

Again, bets regards,
Bob

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Re: [neonixie-l] Re: Jazzed this weekend project fixed HP 3456A bench MM!

[gregebert]

 As far as I can tell, GPIB is pretty simple: just a matter of controlling 
16 TTL-level signals thru the GPIO pins of your favorite microcontroller, 
and the commands themselves are just strings of text characters. The GPIB 
cables are pretty cheap at surplus stores, so this should be a rather cheap 
and not very complex project.

I've considered doing this from one of my Raspberry Pi systems, for example 
the octoprint controller for my 3D printer, because all of the GPIO pins 
are available. Just too busy right now to take this concept to reality.

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Re: [neonixie-l] Re: Jazzed this weekend project fixed HP 3456A bench MM!

[martin martin]

Welcome to the Nix folks!
I used to work for 3M in Camarillo and have a few HP-85s. They were popular
in the 80s for lab and automating instruments.  Most have HPIB IO
controllers built-in or add ons.  I am sure I can get one for you but
shipping may high as they are all made in the US and have lots of steel and
little plastics.

I have an 1977 HP LED lab clock and uses HPIB to control it.





~
*mcvei...@gmail.com *


On Mon, Aug 12, 2019 at 1:21 PM Bill Notfaded  wrote:

> Wow Robert that's really good information.  It seems the National
> Instruments are the MOST expensive interfaces as well.  I was wondering if
> the HP/Agilent/Keysight USB interface would be workable as well!  I like
> their price much better for one thing too!  This is great advice because NI
> makes you think you need their GPIB interface and wow they're expensive
> even used ones are.  Python is one of the best scripting languages as
> well... for me being a network engineer it's awesome.  Thanks!
>
> Bill
>
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>

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[neonixie-l] Re: Jazzed this weekend project fixed HP 3456A bench MM!

[Bill Notfaded]

Wow Robert that's really good information.  It seems the National 
Instruments are the MOST expensive interfaces as well.  I was wondering if 
the HP/Agilent/Keysight USB interface would be workable as well!  I like 
their price much better for one thing too!  This is great advice because NI 
makes you think you need their GPIB interface and wow they're expensive 
even used ones are.  Python is one of the best scripting languages as 
well... for me being a network engineer it's awesome.  Thanks!

Bill

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[neonixie-l] Re: Jazzed this weekend project fixed HP 3456A bench MM!

[Robert L]

Hi Bill,

" I think my next foray into this is getting a GPIB usb interface and 
setting up some automated test and data sampling exercises."

Check out Rohde & Schwarz Forum... This has become my instrument control 
environment of choice... Python with some nice extensions and tools. 
Started using Forum to control a R instrument, now use it for a wide 
variety of Tek and HP... uh... Agilent... uh... Keysight gear. 

https://www.rohde-schwarz.com/us/applications/using-r-s-forum-application-for-instrument-remote-control-application-note_56280-50946.html

The Keysight 82357A and 82357B USB-GPIB adapters work well for me as well:
https://www.ebay.com/itm/New-In-Box-HP-Agilent-82357B-USB-GPIB-Interface-High-Speed-USB-2-0/192183274642?epid=921927408=item2cbf040c92:g:iMkAAOSwaEhZEuUy

I also like the Keysight instrument control library and drivers... they 
have been reliable for me. Forum has tools to discover and control 
instruments, but I prefer Keysight Command Expert for this... Keysight and 
Forum play well together...
https://www.keysight.com/main/software.jspx?ckey=1184883=eng=US=-35190.0.00=1184883=PV

I suggest you avoid National Instruments software if possible... MASSIVE 
downloads and seems overly intrusive... 

Just a few suggestions on where to start!

Best regards,
Bob
Best regards,
Bob

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