[Test-Equipment] Spectrum Analyzer

[Pete Lancashire]

Totally agree on the attn's since your only taking a couple gigs, you can
get good one pretty cheap at hamfests etc.
use the like fuses.



On Tue, Dec 22, 2015 at 11:17 AM, Fuqua, Bill L <wlfuqu00 at uky.edu> wrote:

>   It is AC coupled but to 100VDC.
> That is why I suggested sacrificial attenuators.
> 73
> Bill wa4lav
>
> ________________________________________
> From: Test-Equipment [test-equipment-bounces at mailman.qth.net] on behalf
> of Pete Lancashire [pete at petelancashire.com]
> Sent: Tuesday, December 22, 2015 2:05 PM
> To: Discussion of Electronic Test Equipment
> Subject: Re: [Test-Equipment] Spectrum Analyzer
>
> Add a DC block to you mix, or is this thing AC coupled ?
>
> -pete
>
> On Tue, Dec 22, 2015 at 10:49 AM, Fuqua, Bill L <wlfuqu00 at uky.edu> wrote:
>
> >    Most important is to have some good attenuators.
> > These are to protect the mixer input. It should never exceed 100mW or 100
> > VDC.
> > However, things are not always what they seem. A 10 dB broad band
> > attenuator on the
> > input could save your spectrum analyzer in case of a dropped cable that
> > falls where it
> > shouldn't or connected to the wrong device. 20 dB even better. Until you
> > get very used
> > to using it. An attenuator is also good idea when connecting to an
> outdoor
> > antenna.
> > While disconnected it may obtain a good charge of electricity on the feed
> > line. That
> > discharging directly into the analyzer could bad.  A smoked
> > attenuator is better than a fried mixer.
> >   If you are going to check a transceiver, don't trust that you have the
> > power setting right.
> > Have lots of attenuation between the transceiver and your spectrum
> > analyzer. A directional
> > coupler or capacitive pick-off will serve this purpose.
> >   73
> > Bill wa4lav
> >
> > ________________________________________
> > From: Test-Equipment [test-equipment-bounces at mailman.qth.net] on behalf
> > of Brian Heise [heise4radio at hotmail.com]
> > Sent: Tuesday, December 22, 2015 12:15 PM
> > To: Test-Equipment at mailman.qth.net
> > Subject: [Test-Equipment] Spectrum Analyzer
> >
> > Hey All,
> >                I have just acquired a Tektronix 2712 and have not owned
> > an SA up to now.   My question is this what precautions / equipment do
> > you all take to protect your analyzers?   Also, what tools do you use to
> > assist you in using the SA and the sources for those tools.   The follow
> > up question is this : What tips and tricks would you all like to share
> > with a new owner?   My initial primary uses will be  making NRSC
> > measurements and receiver tuning.   I am also open to finding new (and
> > cool) uses for it as well.
> >
> > Thank you in advance for your responses.
> >
> > Regards,
> > Brian
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