[volt-nuts] Solartron 7081 .. what to look for

[Pete Lancashire]

Joe/Todd

Helps a lot, just finished getting all the 7081 messages from the archive.

I will be very careful with the connector, if the thing i clean, and
basically behaves I'll keep it and order the connector/shell and keep my
eyes open for another connector/cable assembly. Reading Dave's web site the
thing to look for is a sticker from the factory with the calibration
voltage for the zener. And of course order a ER3400 to have as a spare.

Ever see one of those Scheffner filters after it has blown up ? I wish I
still had the photos

-pete



On Thu, Mar 10, 2016 at 7:40 PM, J. L. Trantham <jltran at att.net> wrote:

> Pete,
>
> I have a key that will fit the 'Cal' switch on the front panel and I'll be
> happy to send you a copy if you need it.
>
> You don't need the key to take the cover off.  There are four 'dzus'
> fasteners  on the top and bottom that will allow you to remove the covers.
>
> You don't need the key to put the meter in the 'Cal' mode but it allows
> you to do it while leaving the covers on.  IIRC, removing a wire from the
> 'Cal' switch will put the meter in the 'Cal' mode.  IIRC, the switch is
> 'closed' in the 'Normal' position and 'open' in the 'Cal' position.  To
> achieve the 'Cal' mode, just removing a wire from the switch will do the
> job, IIRC.  Easy to test to make sure I'm correct.  Just remove the wires
> from the switch (they slide off) and measure to see if it is 'open' or
> 'closed'.
>
> There are a couple of batteries (at least one) that might need to be
> replaced.  Easy to measure the voltage and see the date code.  Needed for
> keeping the 'state' but not the Cal constants, IIRC.
>
> The connectors for the front and rear panel input connectors can be
> 'injured' by making connections without the proper connector but you can
> use some temporary connections to make the tests you refer to.  I have the
> specifics about the proper connectors if you need them.  They are in the
> 'archives' I think.
>
> Good meters but slow compared to the 3458A.
>
> Hope this helps.
>
> Joe
>
> -----Original Message-----
> From: volt-nuts [mailto:volt-nuts-bounces at febo.com] On Behalf Of Pete
> Lancashire
> Sent: Thursday, March 10, 2016 8:54 PM
> To: Discussion of precise voltage measurement
> Subject: [volt-nuts] Solartron 7081 .. what to look for
>
> I just won a Solartron 7081, hopefully did not pay too much.
>
> I have 30 days ROR.
>
> Other then the usual things in any used piece of equipment, obvious
> damage, Perfume of Allen Bradly, error messages What are some of the thing
> I should be looking for.
>
> The bad news is I do not have a cable or key. Is the key needed to take
> the cover off ?
>
> Someone in the past said the had the key type and a drawing or scan of the
> key are you still here ?
>
> I could coble up a cable to do the basic E/I/R checks or is there someone
> in or near Portland Oregon that has one ?
>
> Regards
>
> -pete
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