[volt-nuts] GPIB Issue with 3458A

[Randy Evans]

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_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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