[volt-nuts] GPIB Issue with 3458A
Randy Evans
randyevans2688 at gmail.com
Sun Dec 31 00:54:41 EST 2017
Todd,
Since the KE5FX NVRAM download software works, that would seem to indicate
the GPIB is working, wouldn't it (download completes and checksums OK)?
Randy
On Sat, Dec 30, 2017 at 9:52 PM, Randy Evans <randyevans2688 at gmail.com>
wrote:
> Todd,
>
> The minimal quick test would be greatly appreciated if you have the time.
> I know this is above and beyond what I would expect but it would be really
> useful to see if there is any hope for the GPIB on this unit. I will do
> the service note 13 procedure in the morning.
>
> Thanks again,
>
> Randy
>
> On Sat, Dec 30, 2017 at 8:58 PM, Todd Micallef <tmicallef at gmail.com>
> wrote:
>
>> Randy,
>>
>> Short of swapping out the A5 digital board I have no other ideas. If you
>> don't have a NI or Agilent adapter, I am sure I can find a spare for you
>> to
>> test.
>>
>> There is a Service Note 3458A-13A that deals with GPIB communication
>> failures. There is a test within the document to see if a shorting jumper
>> needs to be installed.
>> I can try reducing the code to something minimal for a quick test if you
>> want. It will take some time in the morning.
>>
>> Todd
>>
>> On Sat, Dec 30, 2017 at 11:18 PM, Randy Evans <randyevans2688 at gmail.com>
>> wrote:
>>
>> > Todd,
>> >
>> > Same as before. Still not working. All it does is print out "HP3458A"
>> on
>> > the output console and then just sits there.
>> >
>> > Randy
>> >
>> > On Sat, Dec 30, 2017 at 7:43 PM, Todd Micallef <tmicallef at gmail.com>
>> > wrote:
>> >
>> > > Randy,
>> > >
>> > > I just remembered that I changed the duration from 30 minutes to 2
>> > minutes
>> > > to speed up the test. I forgot to change it back.
>> > >
>> > > Todd
>> > >
>> > > On Sat, Dec 30, 2017 at 10:27 PM, Todd Micallef <tmicallef at gmail.com>
>> > > wrote:
>> > >
>> > > > Randy,
>> > > >
>> > > > I just sent it. I haven't modified Martin's code yet. That can be
>> done
>> > > > once you confirm it works for you.
>> > > >
>> > > > Todd
>> > > >
>> > > > On Sat, Dec 30, 2017 at 10:12 PM, randyevans2688 <
>> > > randyevans2688 at gmail.com
>> > > > > wrote:
>> > > >
>> > > >> Todd,
>> > > >> If you don't mind, just send the code directly to me.
>> > > >> Randy
>> > > >>
>> > > >> Sent from my Verizon, Samsung Galaxy smartphone
>> > > >> -------- Original message --------From: Todd Micallef <
>> > > >> tmicallef at gmail.com> Date: 12/30/17 6:40 PM (GMT-08:00) To:
>> > > Discussion
>> > > >> of precise voltage measurement <volt-nuts at febo.com> Subject: Re:
>> > > >> [volt-nuts] GPIB Issue with 3458A
>> > > >> Randy,
>> > > >>
>> > > >> I have not written anything else for the 3458A using EzGPIB. If
>> you
>> > > have
>> > > >> a
>> > > >> National Instruments or Agilent adapters, I have a handful of
>> Python
>> > > code
>> > > >> I
>> > > >> use to measure some of my standards.
>> > > >>
>> > > >> If you are reading the temperature from the HP meter, I would think
>> > that
>> > > >> the problem lies in how the triggering is configured. The
>> triggering
>> > has
>> > > >> been changed in this script so it may work for you. There was an
>> > > >> additional
>> > > >> command added for disabling the buffer.
>> > > >> The code can be posted here, if possible or I can email it to you
>> for
>> > > >> testing.
>> > > >>
>> > > >> Todd
>> > > >>
>> > > >> On Sat, Dec 30, 2017 at 9:26 PM, randyevans2688 <
>> > > randyevans2688 at gmail.com
>> > > >> >
>> > > >> wrote:
>> > > >>
>> > > >> > Todd, thanks for the help. Where will you post the new code?
>> > > >> > BTW, do you have any very simple code that is likely to work. I
>> am
>> > > >> > interested in seeing if anything other than KE5FX's memory dump
>> > > program
>> > > >> > will work on my HP3458A.
>> > > >> > Thanks again,
>> > > >> > Randy
>> > > >> >
>> > > >> > Sent from my Verizon, Samsung Galaxy smartphone
>> > > >> > -------- Original message --------From: Todd Micallef <
>> > > >> tmicallef at gmail.com>
>> > > >> > Date: 12/30/17 6:13 PM (GMT-08:00) To: Discussion of precise
>> > voltage
>> > > >> > measurement <volt-nuts at febo.com> Subject: Re: [volt-nuts] GPIB
>> > Issue
>> > > >> with
>> > > >> > 3458A
>> > > >> > Randy,
>> > > >> >
>> > > >> > I found the Prologix adapters and have modified the code in the
>> > > original
>> > > >> > script. I am doing a test run now and will post the script when
>> I am
>> > > >> > certain I didn't make it worse.
>> > > >> >
>> > > >> > Todd
>> > > >> >
>> > > >> > On Sat, Dec 30, 2017 at 7:15 PM, Randy Evans <
>> > > randyevans2688 at gmail.com>
>> > > >> > wrote:
>> > > >> >
>> > > >> > > Todd,
>> > > >> > >
>> > > >> > > I have swapped cables, moved the Prologix adapter to both
>> meters
>> > > >> (Agilent
>> > > >> > > works, HP doesn't), tried Martins code as well as Xdevs's. I
>> have
>> > > not
>> > > >> > > tried another PC yet, maybe the next step.
>> > > >> > >
>> > > >> > > Here is the code that Martin modified for two meters, as well
>> as
>> > the
>> > > >> > > modified Xdev's code per your directions (V1.02).
>> > > >> > >
>> > > >> > > Thanks,
>> > > >> > >
>> > > >> > > Randy
>> > > >> > >
>> > > >> > > On Sat, Dec 30, 2017 at 3:55 PM, Todd Micallef <
>> > tmicallef at gmail.com
>> > > >
>> > > >> > > wrote:
>> > > >> > >
>> > > >> > > > Randy,
>> > > >> > > >
>> > > >> > > > I will continue to look for my adapter. I haven't used it for
>> > > quite
>> > > >> a
>> > > >> > > > while.
>> > > >> > > >
>> > > >> > > > I have seen similar issues and swapped cables, moved the
>> adapter
>> > > to
>> > > >> the
>> > > >> > > > other meter, etc... One of my cables was bad from one side of
>> > the
>> > > >> > > connector
>> > > >> > > > to the other (on the same end of the cable) and caused me
>> lots
>> > of
>> > > >> > wasted
>> > > >> > > > time. Weird reading errors were happening.
>> > > >> > > >
>> > > >> > > > Would you email me Martin's code so I can test it here and I
>> > will
>> > > >> see
>> > > >> > if
>> > > >> > > > anything can be done to replicate your issue.
>> > > >> > > >
>> > > >> > > > Todd
>> > > >> > > >
>> > > >> > > >
>> > > >> > > > On Sat, Dec 30, 2017 at 6:42 PM, Randy Evans <
>> > > >> randyevans2688 at gmail.com
>> > > >> > >
>> > > >> > > > wrote:
>> > > >> > > >
>> > > >> > > > > Todd,
>> > > >> > > > >
>> > > >> > > > > I tried adding the line but it made no difference.
>> > > >> > > > >
>> > > >> > > > > Randy
>> > > >> > > > >
>> > > >> > > > > On Sat, Dec 30, 2017 at 12:19 PM, Randy Evans <
>> > > >> > > randyevans2688 at gmail.com>
>> > > >> > > > > wrote:
>> > > >> > > > >
>> > > >> > > > > > Todd,
>> > > >> > > > > >
>> > > >> > > > > > Does it matter where I put the line in the Init_Device
>> > > >> procedure?
>> > > >> > > > > >
>> > > >> > > > > >
>> > > >> > > > > > procedure Init_Device;
>> > > >> > > > > > begin;
>> > > >> > > > > > EZGPIB_BusWriteData(gpib_address,GET_ID);
>> //
>> > > Get
>> > > >> ID
>> > > >> > of
>> > > >> > > > > meter
>> > > >> > > > > > if EZGPIB_BusWaitForData(gpib_add
>> ress,meter_id,Timeout)
>> > > then
>> > > >> > > > > > EZGPIB_ScreenWriteLn(meter_id);
>> > > >> > > > > >
>> > > >> > > > > > EZGPIB_BusWriteData(gpib_address,TRIGGER_SOURCE);
>> //
>> > > Hold
>> > > >> > > > trigger
>> > > >> > > > > > until meter can be setup
>> > > >> > > > > > EZGPIB_BusWriteData(gpib_address,'INBUF ON');
>> > > >> > > > > > EZGPIB_BusWriteData(gpib_address,AUTO_ZERO);
>> > > >> > > > > > EZGPIB_BusWriteData(gpib_address,OUTPUT_FORMAT);
>> > > >> > > > > > end;
>> > > >> > > > > >
>> > > >> > > > > >
>> > > >> > > > > > Randy
>> > > >> > > > > >
>> > > >> > > > > > On Sat, Dec 30, 2017 at 11:20 AM, Todd Micallef <
>> > > >> > tmicallef at gmail.com
>> > > >> > > >
>> > > >> > > > > > wrote:
>> > > >> > > > > >
>> > > >> > > > > >> Randy,
>> > > >> > > > > >>
>> > > >> > > > > >> I am the person that wrote that EzGPIB script. It was my
>> > > first
>> > > >> > > before
>> > > >> > > > I
>> > > >> > > > > >> moved on to Python and I have only written a couple for
>> the
>> > > >> > > different
>> > > >> > > > > >> meters I have on hand. Version 1.01 is the most current
>> > > >> version I
>> > > >> > > have
>> > > >> > > > > for
>> > > >> > > > > >> the 3458A.
>> > > >> > > > > >> I see that I should have added at least one more
>> command to
>> > > the
>> > > >> > > meter
>> > > >> > > > > >> initialization. The additional init command is used in
>> the
>> > > >> > scripts
>> > > >> > > on
>> > > >> > > > > >> xDevs.
>> > > >> > > > > >>
>> > > >> > > > > >> Add the following line in the Init_Device procedure
>> > > >> > > > > >> EZGPIB_BusWriteData(gpib_address,'END ALWAYS');
>> > > >> > > > > >>
>> > > >> > > > > >> This tells the meter to send an EOI on every read.
>> > > >> > > > > >>
>> > > >> > > > > >> I am looking for one of my Prologix adapters or I would
>> > test
>> > > >> this.
>> > > >> > > > When
>> > > >> > > > > I
>> > > >> > > > > >> find it, I will also test it. I want to make sure there
>> are
>> > > no
>> > > >> > > further
>> > > >> > > > > >> issues.
>> > > >> > > > > >> Also, do both meters run the same firmware versions? I
>> > wonder
>> > > >> if
>> > > >> > the
>> > > >> > > > HP
>> > > >> > > > > >> meter is using a much older version.
>> > > >> > > > > >>
>> > > >> > > > > >> Todd
>> > > >> > > > > >>
>> > > >> > > > > >> On Sat, Dec 30, 2017 at 10:42 AM, Randy Evans <
>> > > >> > > > randyevans2688 at gmail.com
>> > > >> > > > > >
>> > > >> > > > > >> wrote:
>> > > >> > > > > >>
>> > > >> > > > > >> > Todd,
>> > > >> > > > > >> >
>> > > >> > > > > >> > I have version 1.01. Yes, please e-mail me your
>> modified
>> > > >> > version.
>> > > >> > > > > >> Maybe it
>> > > >> > > > > >> > will help.
>> > > >> > > > > >> >
>> > > >> > > > > >> > Thanks,
>> > > >> > > > > >> >
>> > > >> > > > > >> > Randy
>> > > >> > > > > >> >
>> > > >> > > > > >> > On Sat, Dec 30, 2017 at 4:24 AM, Todd Micallef <
>> > > >> > > tmicallef at gmail.com
>> > > >> > > > >
>> > > >> > > > > >> > wrote:
>> > > >> > > > > >> >
>> > > >> > > > > >> > > Randy,
>> > > >> > > > > >> > >
>> > > >> > > > > >> > > Is there a version number at the top of the file? I
>> had
>> > > two
>> > > >> > > > versions
>> > > >> > > > > >> > (1.00
>> > > >> > > > > >> > > and 1.01). I can't remember all that changed between
>> > the
>> > > >> two
>> > > >> > > since
>> > > >> > > > > it
>> > > >> > > > > >> has
>> > > >> > > > > >> > > been a while but I did find an additional timeout
>> code
>> > > that
>> > > >> > > > limited
>> > > >> > > > > >> the
>> > > >> > > > > >> > > wait time for reading data to 1 minute. I am
>> guessing I
>> > > >> had a
>> > > >> > > > > problem
>> > > >> > > > > >> > with
>> > > >> > > > > >> > > mine and added it.
>> > > >> > > > > >> > >
>> > > >> > > > > >> > > I can email it to you if you want to try it. If it
>> > works
>> > > >> for
>> > > >> > > you,
>> > > >> > > > I
>> > > >> > > > > >> will
>> > > >> > > > > >> > > have Illya update it on xDevs.
>> > > >> > > > > >> > >
>> > > >> > > > > >> > > Todd
>> > > >> > > > > >> > >
>> > > >> > > > > >> > > On Sat, Dec 30, 2017 at 12:39 AM, Randy Evans <
>> > > >> > > > > >> randyevans2688 at gmail.com>
>> > > >> > > > > >> > > wrote:
>> > > >> > > > > >> > >
>> > > >> > > > > >> > > > I am still unable to get my HP-3458A to work with
>> the
>> > > >> xdevs
>> > > >> > > > > program
>> > > >> > > > > >> > > > "HP3458A_Measure_DMM_Noise.488" (
>> > > >> > > https://xdevs.com/article/dmm
>> > > >> > > > > >> _noise/
>> > > >> > > > > >> > ).
>> > > >> > > > > >> > > > It
>> > > >> > > > > >> > > > works fine with my Agilent 3458A and with a
>> friend's
>> > > >> > HP-3458A
>> > > >> > > > and
>> > > >> > > > > >> his
>> > > >> > > > > >> > > > Agilent 3458A using the EZGPIB program. The SW
>> > > versions
>> > > >> are
>> > > >> > > > > >> identical
>> > > >> > > > > >> > > with
>> > > >> > > > > >> > > > my friend's DMMs, the HP units are (8.2) and with
>> the
>> > > >> > Agilent
>> > > >> > > > > units
>> > > >> > > > > >> are
>> > > >> > > > > >> > > > (9.2). However, both of my units work fine with
>> the
>> > > >> KE5FX
>> > > >> > > GPIB
>> > > >> > > > > >> Toolkit
>> > > >> > > > > >> > > > HP3458.EXE program to download the NVRAM CAL data.
>> > > This
>> > > >> > would
>> > > >> > > > > seem
>> > > >> > > > > >> to
>> > > >> > > > > >> > > > indicate that my HP-3458 GPIB works at least
>> > partially.
>> > > >> > > > > >> > > >
>> > > >> > > > > >> > > > Does anyone have a EZGPIB program that I could
>> try to
>> > > run
>> > > >> > > (that
>> > > >> > > > is
>> > > >> > > > > >> > > > different from the Xdev program)? It would be
>> nice
>> > to
>> > > >> see
>> > > >> > if
>> > > >> > > I
>> > > >> > > > > >> could
>> > > >> > > > > >> > get
>> > > >> > > > > >> > > > something to work other than the HP3458.EXE
>> program.
>> > > Or
>> > > >> if
>> > > >> > > any
>> > > >> > > > > one
>> > > >> > > > > >> has
>> > > >> > > > > >> > > > some ideas on what to look for.
>> > > >> > > > > >> > > >
>> > > >> > > > > >> > > > Thanks,
>> > > >> > > > > >> > > >
>> > > >> > > > > >> > > > Randy Evans
>> > > >> > > > > >> > > >
>> > > >> > > > > >> > > > On Tue, Dec 26, 2017 at 7:24 PM, Randy Evans <
>> > > >> > > > > >> randyevans2688 at gmail.com
>> > > >> > > > > >> > >
>> > > >> > > > > >> > > > wrote:
>> > > >> > > > > >> > > >
>> > > >> > > > > >> > > > > I am hoping some of you experts might be able to
>> > > assist
>> > > >> > > with a
>> > > >> > > > > >> > strange
>> > > >> > > > > >> > > > > problem i am having trying to make automated
>> > > >> measurements
>> > > >> > > > using
>> > > >> > > > > >> > EZGPIB
>> > > >> > > > > >> > > > with
>> > > >> > > > > >> > > > > an Agilent and an HP 3458A. I have a program
>> given
>> > > to
>> > > >> me
>> > > >> > by
>> > > >> > > > > >> Martin
>> > > >> > > > > >> > > > > Reynolds, which is a variant on the Xdevs noise
>> > > >> > measurement
>> > > >> > > > > >> program.
>> > > >> > > > > >> > > > > Martin's program continuously reads the voltage
>> > > >> > measurements
>> > > >> > > > > >> > > sequentially
>> > > >> > > > > >> > > > > from the two meters and then stores then in a
>> > > >> measurements
>> > > >> > > > file,
>> > > >> > > > > >> > along
>> > > >> > > > > >> > > > with
>> > > >> > > > > >> > > > > the temperature measurements from both meters.
>> The
>> > > >> > program
>> > > >> > > > > works
>> > > >> > > > > >> > fine
>> > > >> > > > > >> > > on
>> > > >> > > > > >> > > > > his Agilent and HP 3458As.
>> > > >> > > > > >> > > > >
>> > > >> > > > > >> > > > > On my two 3458As, it takes the temperature
>> > > measurements
>> > > >> > just
>> > > >> > > > > fine
>> > > >> > > > > >> but
>> > > >> > > > > >> > > > only
>> > > >> > > > > >> > > > > takes a voltage measurement from the Agilent
>> unit.
>> > > >> The HP
>> > > >> > > > unit
>> > > >> > > > > >> will
>> > > >> > > > > >> > > not
>> > > >> > > > > >> > > > > make any voltage measurements although I can see
>> > both
>> > > >> the
>> > > >> > > > 3458As
>> > > >> > > > > >> in
>> > > >> > > > > >> > > talk
>> > > >> > > > > >> > > > > states and, of course, it does sent the
>> temperature
>> > > >> > > > > measurements.
>> > > >> > > > > >> > > > However,
>> > > >> > > > > >> > > > > if I turn the HP unit off and then on again,
>> the HP
>> > > >> will
>> > > >> > > start
>> > > >> > > > > to
>> > > >> > > > > >> > take
>> > > >> > > > > >> > > > > voltage and temperature measurements and send
>> them
>> > to
>> > > >> the
>> > > >> > > PC.
>> > > >> > > > > >> > > > >
>> > > >> > > > > >> > > > > Any ideas on what might be causing the strange
>> > > >> behavior?
>> > > >> > > > > >> > > > >
>> > > >> > > > > >> > > > > Thanks,
>> > > >> > > > > >> > > > >
>> > > >> > > > > >> > > > > Randy Evans
>> > > >> > > > > >> > > > >
>> > > >> > > > > >> > > > _______________________________________________
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