[volt-nuts] Datron 1082

Tom Miller tmiller11147 at verizon.net
Tue Apr 22 15:54:18 EDT 2014


Can you post a picture of the battery somewhere and what is printed on it?

Tom



----- Original Message ----- 
From: "Randy Evans" <randyevans2688 at gmail.com>
To: "Discussion of precise voltage measurement" <volt-nuts at febo.com>
Sent: Tuesday, April 22, 2014 3:39 PM
Subject: Re: [volt-nuts] Datron 1082


> The schematic of the Datron 1071 DMM seems to be very similar to the 
> Datron
> 1082 but I'm sure there are differences.  Unfortunately, I have not been
> able to locate the 1082 Service Manual with the parts lists and 
> schematics.
> The 1071 manual does have a similar or identical battery but I can't find
> the part number in the 1071  parts list.  Does anyone know the part number
> of the memory battery in the 1082 or 1071, or the characteristics; e.g.,
> voltage and A-H rating?
>
> Thanks,
>
> Randy Evans AE6YG
>
>
> On Mon, Apr 21, 2014 at 8:32 PM, Tom Knox <actast at hotmail.com> wrote:
>
>> Sorry I wasn't clear. I think the errors you are experiencing are because
>> the memory battery is gone, so it won't matter now, this is for saving 
>> the
>> cal data during future replacement to avoid these problems again.
>> Best Wishes;
>> Thomas Knox
>>
>>
>>
>> > Date: Mon, 21 Apr 2014 19:59:29 -0700
>> > From: randyevans2688 at gmail.com
>> > To: volt-nuts at febo.com
>> > Subject: Re: [volt-nuts] Datron 1082
>> >
>> > Tom,
>> >
>> > I would think with 0.08 VDC the battery is dead and all the memory is
>> gone.
>> >  Do you think it would make any difference if I paralleled the leads
>> with a
>> > new one?  I don't have a parts list to know what type the battery is so
>> > it's going to be a challenge to find a direct replacement.  Wish I had 
>> > a
>> > manual.
>> >
>> > Randy
>> >
>> >
>> > On Mon, Apr 21, 2014 at 7:54 PM, Tom Knox <actast at hotmail.com> wrote:
>> >
>> > > Randy I would say from my experience with Datron there is about 90%
>> chance
>> > > the battery and recal will solve the problem. I would modify the
>> battery
>> > > with a coupe sets of leads that are long enough so you can install a
>> new
>> > > while the old battery is still in circuit.
>> > > Best Wishes;
>> > > Thomas Knox
>> > >
>> > >
>> > >
>> > > > Date: Mon, 21 Apr 2014 19:23:35 -0700
>> > > > From: randyevans2688 at gmail.com
>> > > > To: volt-nuts at febo.com
>> > > > Subject: Re: [volt-nuts] Datron 1082
>> > > >
>> > > > I believe the voltages are correct but I have no schematics or
>> > > > troubleshooting instructions to confirm.  I do see what looks like 
>> > > > a
>> > > > battery in the memory section of the 1082 and it measures 0.08 VDC.
>> Not a
>> > > > good sign.  I am really hoping someone has a Datron 1082 Service
>> manual
>> > > > with schematics that they can steer me to, preferably a soft copy 
>> > > > so
>> I
>> > > can
>> > > > better troubleshoot the unit.  It might just need a new battery
>> (plus a
>> > > > re-cal) to get it going again but I hate going blind.
>> > > >
>> > > > Randy
>> > > >
>> > > >
>> > > > On Mon, Apr 21, 2014 at 8:15 AM, Tom Knox <actast at hotmail.com>
>> wrote:
>> > > >
>> > > > > As with many products of this age the tantalum caps are a common
>> point
>> > > of
>> > > > > failure in the 1082.
>> > > > > Although this current problem sounds like a memory battery.
>> > > > >
>> > > > > Thomas Knox
>> > > > >
>> > > > >
>> > > > >
>> > > > > > Date: Mon, 21 Apr 2014 11:03:56 -0400
>> > > > > > From: cfharris at erols.com
>> > > > > > To: volt-nuts at febo.com
>> > > > > > Subject: Re: [volt-nuts] Datron 1082
>> > > > > >
>> > > > > > Just in case you haven't yet: Always start any investigation 
>> > > > > > with
>> > > > > > checking the power supply for voltage and ripple.  Test the 
>> > > > > > main
>> > > > > > electrolytic capacitors for capacitance, and ESR.
>> > > > > >
>> > > > > > Nothing in the unit's self testing ability can be trusted if 
>> > > > > > the
>> > > > > > power supply is putting out large amounts of ripple, or is at 
>> > > > > > the
>> > > > > > wrong voltage.
>> > > > > >
>> > > > > > -Chuck Harris
>> > > > > >
>> > > > > > Randy Evans wrote:
>> > > > > > > I have a Datron 1082 DMM that just recently stopped working.
>>  When
>> > > I
>> > > > > power
>> > > > > > > up, it gives a "FAIL" message on the front panel.  I found a
>> > > flowchart
>> > > > > in
>> > > > > > > an abbreviated servicing manual that indicates it's from a
>> failure
>> > > of
>> > > > > the
>> > > > > > > "Check for uncorrupted calibration store".  I Assume this
>> likely
>> > > means
>> > > > > the
>> > > > > > > cal tables are corrupted?  Unfortunately, I don't have
>> sufficient
>> > > > > > > information (e.g., schematics) to do any further
>> troubleshooting.
>> > >  Can
>> > > > > > > anyone help with a complete servicing manual and/or further
>> > > diagnostic
>> > > > > help?
>> > > > > > >
>> > > > > > >
>> > > > > > > I did download the Datron 1071DMM  O&S manual from K04BB but 
>> > > > > > > I
>> > > don't
>> > > > > know
>> > > > > > > how similar it is to the 1082.  Can anyone comment on what 
>> > > > > > > the
>> > > > > differences
>> > > > > > > are?
>> > > > > > >
>> > > > > > >
>> > > > > > >
>> > > > > > > Thanks,
>> > > > > > >
>> > > > > > >
>> > > > > > >
>> > > > > > > Randy Evans
>> > > > > > _______________________________________________
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