[vcf-midatlantic] FS: Non-Linear Systems X-2 Nixie Meter

Chris Fala chrisjpf33 at gmail.com
Mon May 9 23:19:21 UTC 2022

Anyone here bidding on this? If so, I will hold off.

On Mon, May 9, 2022 at 5:26 PM Jonathan Chapman via vcf-midatlantic <
vcf-midatlantic at lists.vcfed.org> wrote:

> All,
> I don't usually post about test equipment here, but this one is made by
> Non-Linear Systems, so I figured there's enough overlap that folks might be
> interested:
> https://www.ebay.com/itm/275305278929
> NLS is probably better known for the Kaypro series of computers, but they
> invented the digital multimeter back in the 1950s! Their first unit was an
> electromechanical beast, using stepping relays and edge-lit numerical
> displays. This is of course a later model, and is fully solid state, with
> Nixie tube displays.
> I went through the meter around three years ago, replaced a cap in the HV
> supply for the Nixie anode voltage, reformed the logic and analog supply
> caps, and cleaned up a previous repair that was causing excessive leakage
> on the 1000V range. A basic calibration was done following the manual,
> using a Fluke 343A DC Calibrator and a calibrated Fluke 8842A. Three years
> later, it's still holding calibration!
> Anyhow, I'm letting it go as I don't use it much, I have a number of Nixie
> meters, and though this one is both very nice and historically significant,
> it's DC-only. The option boards for AC and ohms conversion are not present.
> The schematics are available, and it'd be possible to recreate them on
> protoboard with the appropriate Elco connectors.
> Thanks,
> Jonathan

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