[volt-nuts] GPIB Issue with 3458A

[Todd Micallef]

Randy,

You can add it after the last line with the OUTPUT_FORMAT

Todd

On Sat, Dec 30, 2017 at 3:19 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_address,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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