[time-nuts] Recently acquired 53132A

[Pete Lancashire]

Tom,

I should have re-read the model number, no wonder I could not find anything.
Hopefully still a good $100 investment.



On Mon, Dec 18, 2017 at 11:43 AM, Bob kb8tq <kb8tq at n1k.org> wrote:

> Hi
>
> The 53132 is the older version of the 53230 counter. It’s been out of
> production
> and past "end of life" support for quite a while now. It’s main issue
> measurement
> wise is a group of issues that make it less sensitive (lower resolution)
> than one
> might think right at 10 MHz and to a lesser extent at 10 MHz / N or 10 MHz
> * N.
> There is no known “fix” other than running it with a reference that is
> detuned a bit
> from 10 MHz. That obviously has some issues all by its self. I suppose a
> fix could
> be to not measure 10 MHz ….
>
> The biggest failure point in the counters that I have seen has been the
> power supplies.
> They apparently came as a completed module from an HP supplier. One
> wonders who
> that might have been …. I would strongly recommend taking a look at yours
> to be sure
> the water did not damage the board. I would also make sure the fan is
> clean and
> operates correctly. Clogged fans lead to dead power supply boards ….
>
> All that said, it’s a pretty good counter. I’m not sure it is worth a
> crazy price, but there is
> a price I would gladly pay for one. They all will eventually die as the
> las of the VFD displays
> wear out. At that point, hopefully we all will be running them via serial
> or GPIB and
> not even notice the issue.
>
> Lots of Fun
>
> Bob
>
> > On Dec 18, 2017, at 2:23 PM, Pete Lancashire <pete at petelancashire.com>
> wrote:
> >
> > Friday I acquired a 53132A
> >
> > https://photos.app.goo.gl/xexnJcEmT8tEWXi73
> >
> > It does not have any options.
> >
> > It is from a place that sells "selected" E-waste. I was in a water
> damaged
> > box, and was from a DHL freight insurance sale. It's been in the box
> until
> > a couple weeks ago.
> >
> > Anyway, until now I've not followed the conversation on the issues with
> > using the External Reference, which I would like to do. But don't see if
> > there
> > were any conclusions or anything that could be done other then the issues
> > where fixed in the "B" version.
> >
> > Is there a problem and a 'fix' that I missed searching the archives ?
> >
> > -pete
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