Re: wavetek 27XT meter

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Barton B. Anderson by way of Terry Fritz <twftesla-at-qwest-dot-net>" <tesla123-at-pacbell-dot-net>

Hi Ben,

As Terry said, it has both. Obviously, for TC use, those of us using the 27XT
use the test leads. I sure like the one I have. I picked up my 27XT for around
$68 brand new out of the box off eBay a while back, so the good deals can be
found.

Take care,
Bart

Tesla list wrote:

> Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>
>
> Hi Ben,
>
> At 02:55 PM 7/18/2002 -0700, you wrote:
> >Hi Terry,
> >  I've been considering getting one.. but I have some
> >reserve about them..
> >
> >How do you measure capacitance/inductance with the meter?
> >Can you do it directly with the test leads or does the
> >meter have slots in the body?
>
> It has both.  I just used the meter leads to check a bunch of primary caps
> and primary coils and it was within 5% and a few uH in all cases.  Normally
> I would think the leads would mess it up but it seems to compensate very
> well.  I have never seen a handheld meter that seemed to take such
> measurements with so likke error disregarding leads and such!
>
> >My current meter will only
> >allow you to measure through the slots in the body.. which
> >doesen't work so good for my transmitter cap where the
> >terminals are 1+ feet apart.. ;)
>
> This meter actually seems to work better than my old LCR meters.  The newer
> electronics in it seem to "know" what they are doing.  Capacitance is not a
> great challenge, but sub 100uH inductance are with a leaded meter.
>
> Here is a table of readings vs known values for the primary of my big coil:
>
> Turn  Reading   "Actual" (in uH)
> 0       0       0
> 1       1       2.5
> 2       3       4.6
> 3       6       7.6
> 4       10      11.7
> 5       15      16.7
> 6       21      22.8
> 7       28      29.9
> 8       36      38.0
> 9       46      47.0
> 10      56      57.3
> 11      67      68.7
> 12      80      81.0
> 13      94      94.6
> 14      109     109.5
> 15      124     125.8
> 16      143     143.3
> 17      161     162.0
> 18      181     182.2
> 19      204     203.9
>
> Pretty good for simply taking a leaded meter and probing the turns ;-))
> Far far easier than the original standard caps, signal generator, and scope
> setup used to find the real inductances.  Easily close enough to dry tune a
> coil.
>
> Cheers,
>
>         Terry
>
> >