Re: Agilent 82357B repeatable hard failure

Hi Jim,
Can you please let us know if the removal of TCS in the SVN works for your
reading of the calibration data.
I have thought some more about your proposal to set ATN at the end of the
read. We just need to verify that board level reads after the first device
level read still work with the ATN workaround.
If it does that would give us a reliable board level ibsta, From the logic
analyser traces it looks like the board gives valid ADSR responses when it
is in the Talker Active state i.e. after ibwrt.
-Dave

On Wed, 27 Sept 2023 at 16:37, Michael K <[email protected]> wrote:

> > On Wednesday, September 27, 2023 at 07:02:51 AM EDT, dave penkler <
> [email protected]> wrote:
> > The 0x164 from the NI-USB-HS is the correct value for ibsta. Did you do
> one byte reads with ibtest ?
>
> No, that would be too logical 😺
>
> I tried that and it seems that the device responds to an unsolicited read
> with " 9.9E + 37". (which according to the manual means  OFLO - Measured
> value (invalid))
> ( to do a measurement you are required to send a *TRG)
>
> On more careful examination, the first byte read by "onebyte.c" is 'R' of
> the IDN string 'ROHDE&SCHWARZ,NRVD, 101654.002,V1.52  V1.40'.
> I guess the device dumps the rest of the string after the first read.
> After than I read the first byte of ' 9.9E + 37'.
>
> Michael
>

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