Thanks Dominic. Here's the answers I got from IRC, for the record: 1- if the scope has a 50ohm termination mode and you use it, that's fine. otherwise it's almost the same as leaving the output open circuit which is bad. you should use a dummy load, an easy way to set it up is with a BNC T piece & dummy load on one side 2- If your scope does not have a way to switch the input into 50 ohm mode, you can get a 50 ohm adapter.)
Anyway, I bought a 50-ohm terminator and a T-shape BNC connector (I will post some pictures later) Best regards Mehdi On Sun, Nov 22, 2015 at 2:50 PM, Dominic Spill <domini...@gmail.com> wrote: > On 21 November 2015 at 19:57, MA <mehdidevelo...@gmail.com> wrote: > > > > Can I connect HackRF's output directly to an oscilloscope? (in TX mode, > running osmocom_siggen) > > I was worried whether connecting it (without using an antenna or dummy > load) > > would hurt HackRF's output. > > I would suggest using a dummy load to be cautious, but I really have > no experience of connecting HackRF One directly to other equipment. > > Mike Ossmann, Jared Boone or anyone else who has tried this can > probably give a better response as to why you would/wouldn't need to. > > Thanks, > Dominic > > > On Sun, Nov 15, 2015 at 9:20 PM, Dominic Spill <domini...@gmail.com> > wrote: > >> > >> On 14 November 2015 at 09:56, MA <mehdidevelo...@gmail.com> wrote: > >> > > >> > Can I use HackRF as a function generator? > >> > >> From a software point of view, it's very easy to accomplish. If you > >> want to use GNU Radio you can use the waveform generator block [1] > >> > >> > (The only thing I've found is "osmocomm_siggen" and a single page in > >> > Michael's Recon2014 presentation, under "Baseband Expansion Board" > >> > title) > >> > >> From the hardware side, there is a header on HackRF (P9 on the right > >> hand side of this image) which allows access to the baseband, giving > >> you direct access to the output of the DACs (and input to the ADCs). > >> The "Baseband Expansion Board" would be plugged in to that header to > >> allow signals to be used without passing through the analogue > >> front-end. The expansion board would be used to mix the I and Q > >> signals (and possibly offer some other features). > >> > >> Dominic > >> > >> [1] > >> > https://gnuradio.org/doc/doxygen/group__waveform__generators__blk.html#gac97c0f42ffb63f1265decceaaeab9177 > >> [2] https://i.imgur.com/og7TGVz.jpg > > > > >
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