[volt-nuts] 3458a with 202: Slave Test Convergence (sigh)

[J. L. Trantham]

Not sure about the specifics, but I did it to my three 3458A's with the
'single EPROM' version of the A5 board by simply plugging in a couple of
chips.

I can find the specifics if needed.

Joe

-----Original Message-----
From: volt-nuts-bounces at febo.com [mailto:volt-nuts-bounces at febo.com] On
Behalf Of JF PICARD
Sent: Thursday, March 27, 2014 5:33 PM
To: Discussion of precise voltage measurement
Subject: Re: [volt-nuts] 3458a with 202: Slave Test Convergence (sigh)

Hi,
 
What do you mean by " DIY " about the upgrade to opt 01 ?
thanks


________________________________
From: Frank Stellmach <frank.stellmach at freenet.de>
To: volt-nuts at febo.com 
Sent: Thursday, March 27, 2014 8:54 PM
Subject: [volt-nuts] 3458a with 202: Slave Test Convergence (sigh)


"I know that HP will (gladly?) take your sick 3458 and bring it up to
current specs, followed by a calibration. Since my sick one is at
engineering level 2 or 3.something, it must be like it was built in 1989 -
the dates on some components."

Should I try to do any troubleshooting, or just send it to HP?"


Hi,

agilent simply replaces boards, but will not desolder and replace
components.
Therefore, they will definitely replace the processor board completely
(several hundred $), but then the latest firmware 9 will be inside.
Additionally, a new calibration will have to be paid (+ several hundred $).

Alternatively, simply replace the 3 NVRAMs (DALLAS/maxim or digikey, <50$),
and the 6 EPROMs for firmware 9 (agilent, 180$), if you are able to copy the
CAL RAM and/or to recalibrate on your own.
And on the old processor board you can upgrade opt. 01 by DIY (<10$),
instead of agilent (+ several 100 $).
Another fellow volt-nuts did that on a 1989 unit, came up fresh like a
daisy. I.e. no need for further replacement of any other boards.


@Tom Knox: Would you mind sharing your knowledge about error 202 here on
that list, instead?
THX.

Frank

  

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