Definitely no auto read...

Here's what I set for the 5335A - I doubt the 5334B is much different.

I was using the Prologix Ethernet adapter.

No auto read
EOS to CR (5335A likes some kind of termination on its commands, I used CR)
Don't set EOI (5335A doesn't care)
No EOI substitution on read (there isn't one)
Set the gpib read timeout to at least the timer gate time - I used?3 seconds

Initialize the instrument, for 5335A, I sent "IN,FN1,WA1\n" then wait for 125 ms (calculated from the manual)

Read ("++read 10\n" i.e. read up to a newline character) and discard a value from the counter (stale data)

Loop:
Important - delay before reading another value or the instrument?will sulk - my code has 100 ms
Read and process value
goto loop

FWIW, I didn't know these instruments responded to "*IDN?"

Very similar code works for a 5370A, ?but the instrument must be set up to wait for a trigger for each measurement or eventually, everything hangs when using the Ethernet Prologix.? I don't have a USB Prologix to try.

You should be able to send all the commands to the Prologix using a simple serial terminal program to make sure things are working before trying to do it programatically.

?

?

Just a heads-up:

Join us for this 75-minute webinar that will cover the fundamentals of vector network analyzer (VNA) measurements. Whether you're new to VNAs, or an experienced user and simply need a refresher, we've got you covered.??The topics listed below are the foundation of VNA measurements, and we will address each one in detail.

?

In this webinar, you will learn:

·???????? transmission line theory

·???????? s-parameters

·???????? the Smith Chart

·???????? impedance measurements/matching

We'll share a detailed breakdown of the network analyzer block diagram and review the considerations for optimizing dynamic range and accuracy. To finish out this webinar, we will cover calibration and error correction to ensure confident measurements and data collection.

?

Register today!??Share this invite with any of your colleagues?who may also be interested in learning more about vector network analysis.

?

Sincerely,

?

Keysight Technologies

On Mar 26, 2022, at 11:31, Lothar baier via groups.io <Lothar@...> wrote:

?You dont have to install everything thats on the NI disk , there is a function that lets you select what you want to install
There is a lot of functionality that you may not need

On Mar 26, 2022, at 10:51, Peter Gottlieb via groups.io <hpnpilot@...> wrote:

?Yes, already opening in binary mode. I'm going to try the new method of using serial ports recommended by MS.

This should be simple, but, Microsoft.

Peter

On 3/26/2022 7:19 AM, Chuck Harris wrote:

My windows development projects ended when I discovered what a
degenerate scumbag Billy Gates really was, back in the late '80s,
but as I recall, windows software likes to end strings with CR/LF
pairs... automagically.

Abdul's wonderful Prologix adapters, however, get royally miffed
if they see permutations like: LF/CR/LF, or CR/LF/LF, or CR/CR/LF...

My recollection is if you want more sane behavior, you have to
open the com ports in the raw binary mode, where you can direct
the behavior you really want, and thus avoid windows magical help.

-Chuck Harris

On Sat, 26 Mar 2022 00:48:43 -0400 "Peter Gottlieb"
<hpnpilot@...> wrote:
I believe a big clue here is that I get hard failures if I use a CR
as a terminator but a LF works at least partially. According to the
Prologix documentation, either should work properly. Something is
very odd with VBA is handling stream writes in this respect.



On 3/25/2022 10:03 PM, si_emi_01 wrote:

Hi,

I have seen this be a problem when you end a Called program loop
with a Reset Command - which can generate and End or Identify
(EOI), and then return from the Call with either a Reset (2nd time)
or End or Identify Command, which can kill the current transaction
in progress including Data Transfers.

Just saying...

Ross

-----Original Message-----
From: [email protected]
<[email protected]> On Behalf Of Abdul Nizar
Sent: Friday, March 25, 2022 7:56 PM To:
[email protected] Subject: Re:
[HP-Agilent-Keysight-equipment] Question on using Prologix GPIB
adapter

So the same command sequence works with the Configurator app but
not with your VBA program? Seems like VBA may be mangling the
termination character(s). Try a serial port monitoring program to
observe exactly what is being sent to the controller.

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Peter
Gottlieb Sent: Friday, March 25, 2022 4:03 PM To:
[email protected] Subject: Re:
[HP-Agilent-Keysight-equipment] Question on using Prologix GPIB
adapter

So here's something I tried.

Instead of initially sending ["++addr 12" + chr(10)] I sent
[chr(10) +"++addr 12" + chr(10)] and the adapter changed address.
But if I try to do this a second time with another address it still
goes to the instrument instead of changing the adapter address.

I should note this is a Windows 10 Pro system with Excel 365.


On 3/25/2022 6:38 PM, Abdul Nizar wrote:

Hi Peter,

But if I send a "++addr 10" command, according to the manual, the
Prologix

should interpret that as a command to change >> primary address to
10, but instead it seems to just send that through to the
instrument at address 12, which promptly reports >> an error.

Is the input (command or data) prior to “++addr 10” properly
terminated with a LF character? Else, the adapter will assume that
“++addr 10” is a continuation of the previous input and send it
verbatim to the currently addressed instrument.

Regards,

Abdul

*From:*[email protected]
[mailto:[email protected]] *On Behalf Of
*Peter Gottlieb
*Sent:* Friday, March 25, 2022 3:20 PM
*To:* [email protected]
*Subject:* [HP-Agilent-Keysight-equipment] Question on using
Prologix GPIB adapter

Hello HP GPIB experts:

I have an experimental setup with a couple of 34401A meters, a
power supply and a load which I wish to control by the use of a
Prologix GPIB-USB adapter. It was controlled with a NI device but
the drivers are giving me some instability so I thought I would
get a new machine and use the Prologix and eliminate all the
drivers.

I have it hooked up and can use the John Miles configurator
program to set the primary address and issue GPIB commands such as
*IDN? and get proper responses from all the connected equipment.

But when I try to communicate from inside an Excel VBA program, I
can't get the Prologix to change address or otherwise react to any
command.

For example: having set the Prologix (using the configurator) to
address 12, I can issue a "*IDN?" command and get a response from
that particular instrument. But if I send a "++addr 10" command,
according to the manual, the Prologix should interpret that as a
command to change primary address to 10, but instead it seems to
just send that through to the instrument at address 12, which
promptly reports an error.

It seems there is something dead simple I am not doing right but I
have no idea what.

Does anyone have any idea what I need to do differently?

Peter

On Mar 26, 2022, at 10:51, Peter Gottlieb via groups.io <hpnpilot@...> wrote:

?Yes, already opening in binary mode. I'm going to try the new method of using serial ports recommended by MS.

This should be simple, but, Microsoft.

Peter

On 3/26/2022 7:19 AM, Chuck Harris wrote:
My windows development projects ended when I discovered what a
degenerate scumbag Billy Gates really was, back in the late '80s,
but as I recall, windows software likes to end strings with CR/LF
pairs... automagically.

Abdul's wonderful Prologix adapters, however, get royally miffed
if they see permutations like: LF/CR/LF, or CR/LF/LF, or CR/CR/LF...

My recollection is if you want more sane behavior, you have to
open the com ports in the raw binary mode, where you can direct
the behavior you really want, and thus avoid windows magical help.

-Chuck Harris

On Sat, 26 Mar 2022 00:48:43 -0400 "Peter Gottlieb"
<hpnpilot@...> wrote:
I believe a big clue here is that I get hard failures if I use a CR
as a terminator but a LF works at least partially. According to the
Prologix documentation, either should work properly. Something is
very odd with VBA is handling stream writes in this respect.



On 3/25/2022 10:03 PM, si_emi_01 wrote:

Hi,

I have seen this be a problem when you end a Called program loop
with a Reset Command - which can generate and End or Identify
(EOI), and then return from the Call with either a Reset (2nd time)
or End or Identify Command, which can kill the current transaction
in progress including Data Transfers.

Just saying...

Ross

-----Original Message-----
From: [email protected]
<[email protected]> On Behalf Of Abdul Nizar
Sent: Friday, March 25, 2022 7:56 PM To:
[email protected] Subject: Re:
[HP-Agilent-Keysight-equipment] Question on using Prologix GPIB
adapter

So the same command sequence works with the Configurator app but
not with your VBA program? Seems like VBA may be mangling the
termination character(s). Try a serial port monitoring program to
observe exactly what is being sent to the controller.

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Peter
Gottlieb Sent: Friday, March 25, 2022 4:03 PM To:
[email protected] Subject: Re:
[HP-Agilent-Keysight-equipment] Question on using Prologix GPIB
adapter

So here's something I tried.

Instead of initially sending ["++addr 12" + chr(10)] I sent
[chr(10) +"++addr 12" + chr(10)] and the adapter changed address.
But if I try to do this a second time with another address it still
goes to the instrument instead of changing the adapter address.

I should note this is a Windows 10 Pro system with Excel 365.


On 3/25/2022 6:38 PM, Abdul Nizar wrote:

Hi Peter,

But if I send a "++addr 10" command, according to the manual, the
Prologix

should interpret that as a command to change >> primary address to
10, but instead it seems to just send that through to the
instrument at address 12, which promptly reports >> an error.

Is the input (command or data) prior to “++addr 10” properly
terminated with a LF character? Else, the adapter will assume that
“++addr 10” is a continuation of the previous input and send it
verbatim to the currently addressed instrument.

Regards,

Abdul

*From:*[email protected]
[mailto:[email protected]] *On Behalf Of
*Peter Gottlieb
*Sent:* Friday, March 25, 2022 3:20 PM
*To:* [email protected]
*Subject:* [HP-Agilent-Keysight-equipment] Question on using
Prologix GPIB adapter

Hello HP GPIB experts:

I have an experimental setup with a couple of 34401A meters, a
power supply and a load which I wish to control by the use of a
Prologix GPIB-USB adapter. It was controlled with a NI device but
the drivers are giving me some instability so I thought I would
get a new machine and use the Prologix and eliminate all the
drivers.

I have it hooked up and can use the John Miles configurator
program to set the primary address and issue GPIB commands such as
*IDN? and get proper responses from all the connected equipment.

But when I try to communicate from inside an Excel VBA program, I
can't get the Prologix to change address or otherwise react to any
command.

For example: having set the Prologix (using the configurator) to
address 12, I can issue a "*IDN?" command and get a response from
that particular instrument. But if I send a "++addr 10" command,
according to the manual, the Prologix should interpret that as a
command to change primary address to 10, but instead it seems to
just send that through to the instrument at address 12, which
promptly reports an error.

It seems there is something dead simple I am not doing right but I
have no idea what.

Does anyone have any idea what I need to do differently?

Peter

Thanks to Yue for the confirmation of OK sampler. He will try to post the errors resulting from the conf test to try to locate the faulty circuit.

Il giorno sab 26 mar 2022 alle ore 12:27 Yue <yuetianzou@...> ha scritto:

On Sat, Mar 26, 2022 at 07:14 PM, Franco Macciò wrote:

frequency autocal ends it with: done

Your sampler should be OK.

My windows development projects ended when I discovered what a
degenerate scumbag Billy Gates really was, back in the late '80s,
but as I recall, windows software likes to end strings with CR/LF
pairs... automagically.

Abdul's wonderful Prologix adapters, however, get royally miffed
if they see permutations like: LF/CR/LF, or CR/LF/LF, or CR/CR/LF...

My recollection is if you want more sane behavior, you have to
open the com ports in the raw binary mode, where you can direct
the behavior you really want, and thus avoid windows magical help.

-Chuck Harris

On Sat, 26 Mar 2022 00:48:43 -0400 "Peter Gottlieb"
<hpnpilot@...> wrote:

I believe a big clue here is that I get hard failures if I use a CR
as a terminator but a LF works at least partially.? According to the
Prologix documentation, either should work properly.? Something is
very odd with VBA is handling stream writes in this respect.



On 3/25/2022 10:03 PM, si_emi_01 wrote:

Hi,

I have seen this be a problem when you end a Called program loop
with a Reset Command - which can generate and End or Identify
(EOI), and then return from the Call with either a Reset (2nd time)
or End or Identify Command, which can kill the current transaction
in progress including Data Transfers.

Just saying...

Ross

-----Original Message-----
From: [email protected]
<[email protected]> On Behalf Of Abdul Nizar
Sent: Friday, March 25, 2022 7:56 PM To:
[email protected] Subject: Re:
[HP-Agilent-Keysight-equipment] Question on using Prologix GPIB
adapter

So the same command sequence works with the Configurator app but
not with your VBA program? Seems like VBA may be mangling the
termination character(s). Try a serial port monitoring program to
observe exactly what is being sent to the controller.

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Peter
Gottlieb Sent: Friday, March 25, 2022 4:03 PM To:
[email protected] Subject: Re:
[HP-Agilent-Keysight-equipment] Question on using Prologix GPIB
adapter

So here's something I tried.

Instead of initially sending ["++addr 12" + chr(10)] I sent
[chr(10) +"++addr 12" + chr(10)] and the adapter changed address.
But if I try to do this a second time with another address it still
goes to the instrument instead of changing the adapter address.

I should note this is a Windows 10 Pro system with Excel 365.


On 3/25/2022 6:38 PM, Abdul Nizar wrote:

Hi Peter,

But if I send a "++addr 10" command, according to the manual, the
Prologix

should interpret that as a command to change >> primary address to
10, but instead it seems to just send that through to the
instrument at address 12, which promptly reports >> an error.

Is the input (command or data) prior to “++addr 10” properly
terminated with a LF character? Else, the adapter will assume that
“++addr 10” is a continuation of the previous input and send it
verbatim to the currently addressed instrument.

Regards,

Abdul

*From:*[email protected]
[mailto:[email protected]] *On Behalf Of
*Peter Gottlieb
*Sent:* Friday, March 25, 2022 3:20 PM
*To:* [email protected]
*Subject:* [HP-Agilent-Keysight-equipment] Question on using
Prologix GPIB adapter

Hello HP GPIB experts:

I have an experimental setup with a couple of 34401A meters, a
power supply and a load which I wish to control by the use of a
Prologix GPIB-USB adapter. It was controlled with a NI device but
the drivers are giving me some instability so I thought I would
get a new machine and use the Prologix and eliminate all the
drivers.

I have it hooked up and can use the John Miles configurator
program to set the primary address and issue GPIB commands such as
*IDN? and get proper responses from all the connected equipment.

But when I try to communicate from inside an Excel VBA program, I
can't get the Prologix to change address or otherwise react to any
command.

For example: having set the Prologix (using the configurator) to
address 12, I can issue a "*IDN?" command and get a response from
that particular instrument. But if I send a "++addr 10" command,
according to the manual, the Prologix should interpret that as a
command to change primary address to 10, but instead it seems to
just send that through to the instrument at address 12, which
promptly reports an error.

It seems there is something dead simple I am not doing right but I
have no idea what.

Does anyone have any idea what I need to do differently?

Peter

So the same command sequence works with the Configurator app but not with your VBA program?
Seems like VBA may be mangling the termination character(s). Try a serial port monitoring program to observe exactly what is being sent to the controller.

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Peter Gottlieb
Sent: Friday, March 25, 2022 4:03 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] Question on using Prologix GPIB adapter

So here's something I tried.

Instead of initially sending ["++addr 12" + chr(10)] I sent [chr(10) +"++addr
12" + chr(10)] and the adapter changed address. But if I try to do this a second
time with another address it still goes to the instrument instead of changing
the adapter address.

I should note this is a Windows 10 Pro system with Excel 365.


On 3/25/2022 6:38 PM, Abdul Nizar wrote:

Hi Peter,

But if I send a "++addr 10" command, according to the manual, the Prologix

should interpret that as a command to change >> primary address to 10, but
instead it seems to just send that through to the instrument at address 12,
which promptly reports >> an error.

Is the input (command or data) prior to “++addr 10” properly terminated with a
LF character? Else, the adapter will assume that “++addr 10” is a continuation
of the previous input and send it verbatim to the currently addressed instrument.

Regards,

Abdul

*From:*[email protected]
[mailto:[email protected]] *On Behalf Of *Peter Gottlieb
*Sent:* Friday, March 25, 2022 3:20 PM
*To:* [email protected]
*Subject:* [HP-Agilent-Keysight-equipment] Question on using Prologix GPIB adapter

Hello HP GPIB experts:

I have an experimental setup with a couple of 34401A meters, a power supply
and a load which I wish to control by the use of a Prologix GPIB-USB adapter.
It was controlled with a NI device but the drivers are giving me some
instability so I thought I would get a new machine and use the Prologix and
eliminate all the drivers.

I have it hooked up and can use the John Miles configurator program to set the
primary address and issue GPIB commands such as *IDN? and get proper responses
from all the connected equipment.

But when I try to communicate from inside an Excel VBA program, I can't get
the Prologix to change address or otherwise react to any command.

For example: having set the Prologix (using the configurator) to address 12,
I can issue a "*IDN?" command and get a response from that particular
instrument. But if I send a "++addr 10" command, according to the manual, the
Prologix should interpret that as a command to change primary address to 10,
but instead it seems to just send that through to the instrument at address
12, which promptly reports an error.

It seems there is something dead simple I am not doing right but I have no
idea what.

Does anyone have any idea what I need to do differently?

Peter

Hi,

You could probably benefit from having an HP59401A GPIB Bus Analyzer. I have used it for the following functions:

1. It shows all of the transactions and Status Lines real-time or stored with a memory depth of 32 Characters (Command/Data/etc.).

2. It can Monitor the Bus as a Listener. It indicates all of the Bus Control Signals with each fetch or execute.

3. It can Command the Bus (or specific device) as a Talker. It uses the Service Request (SRQ), Remote Enable (REN), Attention (ATN) and End or Identify (EOI) or combination of them with a Trigger Word for that.

4. It can also Generate a Character/Command External Trigger (like for an Oscilloscope), based on a Trigger Word.

5. It can Stop all Bus Transactions when a Trigger Word is met.

6. It allows you to control the Bus Execution Speed or Halt the Bus too.


Simple, accurate and very handy for this type of problem because you see exactly what is going on or control the bus from an actual bus hardware connection.

They are around $100 to $150 US on FleeBay.


Ross

-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Peter Gottlieb
Sent: Friday, March 25, 2022 4:51 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] Question on using Prologix GPIB adapter

To be honest I am not sure exactly what is being sent out on the GPIB. I do see the "Talk" LED on the Prologix flash and the instrument complain but don't have any capability to observe what happens on the GPIB.

It does appear to be something to do with communicating with the Prologix, but what could it be?


On 3/25/2022 6:47 PM, W2HX wrote:

Peter, can you confirm that "++ver" is sending "++ver" to the instrument? It
shouldn't. Meaning this may not be an issue with changing the address of the
target device, but it may be an issue communicating with the prologix itself?

Hi Peter,

I've been using the Prologix for a couple of years but using Python, not VB. (have used VB w/NI but that was years ago.)
One thing I found is that many (most) GPIB instruments do not react well to the Auto Reply "feature" of the Prologix. (read-after-write)
It would often crash my programs! So now I usually turn this off (++auto 0) as well as EOS termination. (++eos 3). In this mode,
you must use the ++read eoi Prologix command to read the response from the instrument after sending it a query.

You can test all of this with the GPIB Configuration tool.

Not sure if this helps but worth a look.

Mark

Just a heads-up:

Join us for this 75-minute webinar that will cover the fundamentals of vector network analyzer (VNA) measurements. Whether you're new to VNAs, or an experienced user and simply need a refresher, we've got you covered.??The topics listed below are the foundation of VNA measurements, and we will address each one in detail.

*In this webinar, you will learn:*

·transmission line theory

·蝉-辫补谤补尘别迟别谤蝉

·the Smith Chart

·impedance measurements/matching

We'll share a detailed breakdown of the network analyzer block diagram and review the considerations for optimizing dynamic range and accuracy. To finish out this webinar, we will cover calibration and error correction to ensure confident measurements and data collection.

Register today!??Share this invite with any of your colleagues?who may also be interested in learning more about vector network analysis.

Sincerely,

Keysight Technologies

On 3/26/22 07:56, Labguy wrote:
 Thanks very much Dave. I will take a look at the volt-nuts group.

   Be aware, I did not have good results with this approach several 
months ago.  Two people piped up and offered to repair my 3458A's failed 
A/D converter.  I responded to both of them, and they both promptly 
disappeared.  Then someone representing a company offered service, and 
then after a brief back-and-forth they said they couldn't do it.  Then, 
a different person popped up and suggested that I talk to THIS list. (!)

   Heading over to Keysight Find-a-Part, the current revision of the 
board was in stock and orderable, but every time I tried to put it in my 
cart and buy it, either the site would stop responding or the board 
would disappear from my cart at checkout.  I tried for days.

   It was really weird; I felt as though I'd been blacklisted or something.

   The next time my 3458A climbs to the top of the priority list (which 
will be soon), I'll probably go over to eevblog and beg for assistance 
there.

              -Dave