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Cable test (DTF)


Carhunter7 2021/01/09 15:07

Hello,
Is this device cable of testing lmr400/lmr600 coax for distance to fault?
Frequency under test is 910-920mhz and distance to 250 feet.
Thanks,
Mike

Carhunter7 2021/01/09 15:13

Hello,
Is this device cable of testing lmr400/lmr600 coax for distance to fault?
Frequency under test is 910-920mhz and distance to 250 feet.
Thanks,
Mike

Dragan Milivojevic 2021/01/10 05:59

It's a VNA so yes.

On Sun, 10 Jan 2021 at 04:42, <Carhunter7@hotmail.com> wrote:

Siegfried Jackstien 2021/01/10 06:33

And now he has to find out how

Dg9bfc sigi



Am 10.01.2021 05:59 schrieb Dragan Milivojevic <d.milivojevic@gmail.com>:

> It's a VNA so yes.
>

>

>
>

>

> On Sun, 10 Jan 2021 at 04:42,
<[Carhunter7@hotmail.com](mailto:Carhunter7@hotmail.com)> wrote:
>

>

>> Hello,
> Is this device cable of testing lmr400/lmr600 coax for distance to fault?
> Frequency under test is 910-920mhz and distance to 250 feet.
> Thanks,
> Mike



_._,_._,_

* * *

David Eckhardt 2021/01/12 19:04

Yes, the TDR function of the NANOs is capable of finding faults along the
cable. Just use a frequency sweep appropriate to the length of cable.
Even though you are using the cable at nominally 900 MHz, the length for
appropriate TDR should be in the single-digit MHz range. At 250-feet,
possibly 5 MHz would be appropriate. For attenuation measurements, of
course, run the frequency sweep at the frequencies of interest.

Dave - WØLEV

On Sun, Jan 10, 2021 at 3:42 AM <Carhunter7@hotmail.com> wrote:

> Hello,
> Is this device cable of testing lmr400/lmr600 coax for distance to fault?
> Frequency under test is 910-920mhz and distance to 250 feet.
> Thanks,
> Mike
>
>
>

--
*Dave - WØLEV*
*Just Let Darwin Work*

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