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Re: GPIB scripting software?

 

¿ªÔÆÌåÓý

If you¡¯re much older than I am, you¡¯ll get along fine with this attitude.? If you¡¯re much younger, it would be a catastrophic error, likely a career-limiting one.?

?

From my own intermediate point of view, I can go either way¡­ just throwing it out there as a suggestion.? ??

?

The point is, don¡¯t be afraid of Python, as there are helpful resources that weren¡¯t available until recently.

?

-- john, KE5FX

?

From: [email protected] <[email protected]> On Behalf Of Dave_G0WBX via groups.io
Sent: Tuesday, September 17, 2024 11:29 AM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] GPIB scripting software?

?

Chat GPT?

?

Here, that is known by many as "Automated Incompitence", with very good reason.

?

Fun to play with, but wouldn't trust it as far as I can spit.

?

Dave "KBV.

?
Re: HP 5245L: unknown chassis capacitor

 

That looks like an oil filled bathtub paper capacitor . They develop high leakage like all other paper caps. I've found brand new one shrink wrapped to cardboard that were already bad.

On Tue, Sep 17, 2024 at 1:26?PM Scott Townley via <scott=[email protected]> wrote:
Thanks to all for the input.
Sure enough, my 5245L has "H96" on the back, and there is a little sticker above the AC input that says "50-400 Hz", covering up the chassis stenciling which surely said "50-60 Hz".
There are two solid red wires from one capacitor terminal; one goes to S4 on the back panel (120/240 VAC selector switch) and the other goes to the fan.
Sounds to me like if I don't intend on using this in an airplane, I can eliminate the capacitor and run a single red wire from the fan to S4...agree?
?
Re: HP8970 Companion

 

On Tue, Sep 17, 2024 at 11:59 AM, Dave_G0WBX wrote:
There is a way to install linux-gpib on a Raspberry Pi, running one of the debian derivatives.
?
That is documented in the project files describing how to make a LAN connected GPIB controler out of a Pi.
?

?
I wrote a script to do this. It's available here.
I think I need to update a line or two? it because the GPIB project switched from SVN to GIT
?
Michael
Re: 8566B Attenuator Service

 

I somehow doubt our system of coarseness is the same as yours, Chuck. 1500 grit paper is extremely mild. In fact it's used in car refinishing to buff up clear coat (varnish). So you can think of it as a basically just a polishing compound grade. And as I said, it was just a few light strokes to each contact area. I don't think I'll have any further issues with that and it's the o-rings I believe that will be next to fail. Anyway, I've reassembled it all now and will attempt the manual calibration procedure in a couple of hours' time. Stay tuned!
Re: Twelve(+/-) bins of original HP/Agilent manuals free for pickup in San Diego

 

Greetings, Stan,
?
Would you have any power supply-related documentation?
I'm in town.
?
Thanks.
Sam
Re: HP8970 Companion

 

There is a way to install linux-gpib on a Raspberry Pi, running one of the debian derivatives.

That is documented in the project files describing how to make a LAN connected GPIB controler out of a Pi.

Including schematics of the needed hardware etc.

Sadly, I've misplaced the link to that website.? :-(

It is also entirely possible to run Linux as a "guest" on Windows, using Virtual box.? (Sharing a desktop if needed too in "seamless" mode.)

I was doing that over 8 years ago, Mint 15 guest, on Win'7 with an AMD CPU.? It all worked very well indeed, slick & stable.

Likewise, running Windows as a guest in a VM under Linux is commonly done, but you need a Windows install disk, or .iso file of.
(Limited lifetime VM "appliances can be had from MS too, for short-term use.)

You just need plenty of RAM & Drive space, a CPU that supports virtualisation is good to have, but not essential.? (But the more CPU grunt the better.)

Either way, user applications on the two OS's can communicate via virtual LAN connections.? Or not, as you need.

Or, you can "Dual Boot" the PC.? At boot time, you choose one OS or the other, but then it's only the one OS running.? (Linux can usually "see into" the dormant Windows partition, but not the other way around.)

There are lots of options.

Dave 'KBV.
Re: HP 5245L: unknown chassis capacitor

 

Or use a DC fan instead - it will be much less noisy and there are plenty places to tap off the voltage.? The only issue is getting it mounted properly but it can certainly be done - I have a couple that I did that with.
?
Hal
Re: GPIB scripting software?

 

"Often wrong but never in doubt." In that sense, ChatGPT emulates humans pretty well. ;)

--
Prof. Thomas H. Lee
Allen Ctr., Rm. 205
420 Via Palou Mall
Stanford University
Stanford, CA 94305-4070

On 9/17/2024 11:28 AM, Dave_G0WBX via groups.io wrote:
Chat GPT?

Here, that is known by many as "Automated Incompitence", with very good reason.
Re: GPIB scripting software?

 

Chat GPT?

Here, that is known by many as "Automated Incompitence", with very good reason.

Fun to play with, but wouldn't trust it as far as I can spit.

Dave "KBV.
Re: KO4BB manuals site error

 

oops , sorry -- didn't try that button , was looking at one of the other sections .

Brian(UK)

On Tuesday, 17 September 2024 at 19:17:21 BST, Mike Millen <mike.millen.uk@...> wrote:





That may be the main page, but did you try the "Manuals" button?? ()

Comes up as "Error: Target directory does not exist." here in Bognor.

73,
Mike - M0MLM






________________________________

From: Brian via groups.io [mailto:brianas1948@...]

Date: Tuesday, 17 September 2024 at 7:11 pm

Subject: [HP-Agilent-Keysight-equipment] KO4BB manuals site error




??Here in the UK I get it ok

Brian(UK)







On Tuesday, 17 September 2024 at 17:55:36 BST, Sergey Kubushyn <ksi@...> wrote:





On Tue, 17 Sep 2024, Steve - Home wrote:

Same here.


??I just got the following error when going to Didier¡¯s manuals directory:

Error: Target directory does not exist.

Anyone else tried it recently?
Re: KO4BB manuals site error

 

¿ªÔÆÌåÓý

That may be the main page, but did you try the "Manuals" button?? ()

Comes up as "Error: Target directory does not exist." here in Bognor.

73,
Mike - M0MLM



From: Brian via groups.io [mailto:brianas1948@...]
Date: Tuesday, 17 September 2024 at 7:11 pm
Subject: [HP-Agilent-Keysight-equipment] KO4BB manuals site error

Here in the UK I get it ok

Brian(UK)







On Tuesday, 17 September 2024 at 17:55:36 BST, Sergey Kubushyn <ksi@...> wrote: 





On Tue, 17 Sep 2024, Steve - Home wrote:

Same here.


I just got the following error when going to Didier¡¯s manuals directory:

Error: Target directory does not exist.

Anyone else tried it recently?

Re: KO4BB manuals site error

 

Here in the UK I get it ok

Brian(UK)

On Tuesday, 17 September 2024 at 17:55:36 BST, Sergey Kubushyn <ksi@...> wrote:





On Tue, 17 Sep 2024, Steve - Home wrote:

Same here.

I just got the following error when going to Didier¡¯s manuals directory:

Error: Target directory does not exist.

Anyone else tried it recently?

Steve
---
*
*? KSI@home? ? KOI8 Net? < >? The impossible we do immediately.? *
*? Las Vegas? NV, USA? < >? Miracles require 24-hour notice.? *
*
Re: HP 5245L: unknown chassis capacitor

 

You might see if you can see any model number, operating voltage or frequency range on the fan itself. It might not be happy if you remove the capacitor depending upon the characteristics of the fan. A capacitor run motor is most commonly indicated by extra wires coming out of the fan connecting to the capacitor.

If the fan is operating normally why not leave the capacitor in there if it is not bothering anything?

I replaced my fans with normal 120 volt 50-60 Hz ones since they were making a lot of bearing noise and have reached end-of-life anyway. Then you can remove any labels referring to the 400 Hz operation of the unit..

Greg
Re: HP 5245L: unknown chassis capacitor

 

Is it working now? ?If so, why remove the cap - it's not hurting anything.

-Pat

?

> ------ Original Message ------
> From: scott@...
> To: [email protected]
> Sent: Tuesday, September 17th 2024, 01:26 PM
> Subject: Re: [HP-Agilent-Keysight-equipment] HP 5245L: unknown chassis capacitor
?

Thanks to all for the input.
Sure enough, my 5245L has "H96" on the back, and there is a little sticker above the AC input that says "50-400 Hz", covering up the chassis stenciling which surely said "50-60 Hz".
There are two solid red wires from one capacitor terminal; one goes to S4 on the back panel (120/240 VAC selector switch) and the other goes to the fan.
Sounds to me like if I don't intend on using this in an airplane, I can eliminate the capacitor and run a single red wire from the fan to S4...agree?
?
Re: HP8970 Companion

 

On Tue, Sep 17, 2024 at 08:55 AM, Razvan Popescu wrote:
I looked at the libgtk-3-0 library
I'm using GTK4 so there may be a difference.
? gtk4-demo --version
gtk4-demo 4.14.5
?
Yes, I understand about updates. Fedora has the COPR repositories that a developer can maintain independent of Fedora itself which is nice. Perhaps Ubuntu has something similar. Id be happy if someone familiar with the Ubuntu ecosystem wants to take on this.
Re: 8566B Attenuator Service

 

Doesn't much matter. The only real difference is
solid contacts give you more material.

The biggest issue with using abrasive sand paper is
it embeds abrasive particles in the contacts. They
cause problems down the line.

I hope you are lucky, and see no further problems.

-Chuck Harris


On Mon, 16 Sep 2024 15:29:15 -0700 "Jinxie via groups.io"
<paul666@...> wrote:
Mark - will do.
Chuck - these contacts were not gold plated.
Re: HP 5245L: unknown chassis capacitor

 

Thanks to all for the input.
Sure enough, my 5245L has "H96" on the back, and there is a little sticker above the AC input that says "50-400 Hz", covering up the chassis stenciling which surely said "50-60 Hz".
There are two solid red wires from one capacitor terminal; one goes to S4 on the back panel (120/240 VAC selector switch) and the other goes to the fan.
Sounds to me like if I don't intend on using this in an airplane, I can eliminate the capacitor and run a single red wire from the fan to S4...agree?
?
Re: GPIB scripting software?

 

# 7854.py - try out some gpib data collection using the Prologix gpib-usb controller
#

import os
import termios
import serial
import time

def gpib_init() :
ser.write("++mode 1\r")
time.sleep(0.1)
ser.write("++ifc\r")
time.sleep(0.1)
ser.write("++auto 0\r")
time.sleep(0.1)
ser.write("++eoi 0\r")
time.sleep(0.1)

def gpib_read(addr):
ser.write("++addr " + str(addr) + "\r")
time.sleep(0.1)
ser.write("++read eoi\r")
return ser.readline()

def gpib_write(addr,gpibstr):
ser.write("++addr " + str(addr) + "\r")
time.sleep(0.1)
ser.write(gpibstr + "\r")

#
# test program...
#

ser = serial.Serial('/dev/ttyUSB0',rtscts=0,timeout=1)

ser.write("++ver\r")
print ser.readline()

gpib_init()

gpib_write(10,"ID?\r")
print "ID= " + gpib_read(10) + "\r"

gpib_write(10,"VMDR\r")
gpib_write(10,"HMDB\r")

gpib_write(10,"STORED\r")

gpib_write(10,"1 0 2 4 >P/W AVG10\r")
gpib_read(10)

gpib_write(10,"SENDX\r")
time.sleep(4)

print "X=" + gpib_read(10) + "\r"
print "X=" + gpib_read(10) + "\r"


-Chuck Harris

On Tue, 17 Sep 2024 12:20:03 +0200 "Harke Smits via groups.io"
<yrrah@...> wrote:
Do you have a simple example at hand? I used the Prologix adapter in
the past with KE5FX toolbox but never with pyvisa. I prefer to use
Python as I want more data processing options than available with the
kit.

H

On 17/09/2024 04:27, Andrew Hakman wrote:
Python + prologix adapter is about as simple, portable, and
dependency free as it gets.

Open the port with the python "serial" library, and send direct
GPIB commands to it.

No need to install any drivers or i/o libraries, basically just
plug and play!

On Mon, Sep 16, 2024 at 12:25?AM Anders via groups.io
<> <anders.gustafsson@...> wrote:

I do the same with my own Prologix-clone
Re: 8566B Attenuator Service

 

Lots of generations of switching equipment. The guy that
taught me this stuff was trained on both Strowger (step-by-step)
and #1 and #5 crossbar. I worked with him designing trunk cards
for a small RedComm digital switch. If you really wanted to hear
him go-off, stick a 1/4" headphone plug into one of his telco
level generators... but I digress.

Most of the time, I prefer linen paper and IPA. Jinxie already
tried that. I would have gone to burnishing next, but never
abrasive. I would sooner use a file, because at least it won't
embed abrasive particles in the soft contact material.

-Chuck Harris



On Tue, 17 Sep 2024 02:29:58 +0000 (UTC) "jim via groups.io"
<ab7vf@...> wrote:


On Monday, September 16, 2024 at 02:47:48 PM PDT, Chuck Harris
<cfharris@...> wrote:
If you were working for the telephone company, Easy does it is a
good motto for this work.

-Chuck Harris (not a Bell guy, but taught contact burnishing by one.)


Well...as a former "Bell guy"...(12 years Western Electric
Installation)....17+ years Central Office Tech...I kinda agreeTho
what I used on relay contacts in the #1 and #1A ESS Switching Systems
was BOND PAPER strips soaked in suitable liquid contact
cleaner...most of said relays had Palladium plated contacts rather
than gold plating tho... Jim




Re: KO4BB manuals site error

 

On Tue, 17 Sep 2024, Steve - Home wrote:

Same here.

I just got the following error when going to Didier¡¯s manuals directory:

Error: Target directory does not exist.

Anyone else tried it recently?

Steve
---
*
* KSI@home KOI8 Net < > The impossible we do immediately. *
* Las Vegas NV, USA < > Miracles require 24-hour notice. *
*
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