Re: [Linux-gpib-general] Agilent 82357B repeatable hard failure

[Michael D. <mi...@di...>]

Hi Jim,
attached the readings from two instruments including 'E' (both are connected to GPIB and on at the same time).
_read are after reset, end_always are with sending "END ALWAYS" (EOI line set true when the last byte of each reading sent).

Ciao, Micha

-----Ursprüngliche Nachricht-----
Von: Jim Houston <ji...@ov...> 
Gesendet: Montag, 25. September 2023 02:51
An: Michael Dittrich <mi...@di...p>; lin...@li...
Betreff: Re: AW: [Linux-gpib-general] Agilent 82357B repeatable hard failure

Hi Micha,  Everyone,

Thank you for running this.   Would you do another run, I would like to see what happens with a response including the letter 'E'.  A command that returns a voltage would likely do.  On my HP3478A a 's' returns the front panel value it may work on your meters.

Thanks
Jim

On 9/24/23 19:48, Michael Dittrich wrote:
> Hi Jim,
> attached the outputs from my system.
>
> Ciao, Micha
>
> jhouston@linux-gpib:~$ python3 byte_read.py 4 volt?
> b'0' 256
> b'.' 256
> b'0' 256
> b'E' 256
> InternalReceiveSetup: command failed
> Traceback (most recent call last):
>     File "byte_read.py", line 12, in <module>
>       ch = inst.read(1)
>     File "/usr/local/lib/python3.6/dist-packages/Gpib.py", line 59, in read
>       self.res = gpib.read(self.id,len)
> gpib.GpibError: read() failed: An attempt to write command bytes to the bus has timed out.
> jhouston@linux-gpib:~$
>
>