Ok thanks. In my haste I was mistaken in assuming that the LO gain would track
with the RF output gain. Silly mistake. I’m still getting used to separating
out the LO.
I can put this on a SpectrumAnalyzer (with an attenuator in line) on Monday.
I’m trying to take channel to channel phase measurements to determine what
level of phase control I can have over one channel.
It’s not critical that I use GNURadio but it seemed like the logical option as
it’s very easy to make those adjustments.
I will look at the python API and see if the commands Rob was talking about can
be invoked using Python instead of writing a C++ application.
Then I’ll see if that is included in gr-uhd. If not, I can submit a pull
request with any changes.
I’ll ping the gnuradio chat later tonight.
Thanks for the help guys are in
<end transmission>
> On Jan 14, 2022, at 17:43, Marcus D. Leech <patchvonbr...@gmail.com> wrote:
>
>
> On 2022-01-14 17:35, Paul Atreides wrote:
>> Using a B210 at f_c of the N321. TX LO OUT0 is plugged into RX2 of the B210
> You might want to put an attenuator inline, since the LO output is a couple
> of dBm, which is
> "loud as a heavy metal concert" from the perspective of a receiver input.
>
> If the splitter isn't enabled in this test, then what you're seeing is the
> leakage through the RF
> switch that enables the splitter, which means that once the splitter is
> turned on, the
> signal will be even louder...
>
>
>>
>>
>>
>> On Fri, Jan 14, 2022 at 5:32 PM Marcus D. Leech <patchvonbr...@gmail.com>
>> wrote:
>>> On 2022-01-14 17:30, Rob Kossler wrote:
>>>> These thare the UHD commands. I don't know how these translate to gnuradio.
>>>>
>>>> % set both LO sources to use external
>>>> set_tx_lo_source(“external”, “lo1”, 0)
>>>> set_tx_lo_source(“external”, “lo1”, 1)
>>>>
>>>> % export the internal LO to the 1:4 splitter
>>>> set_tx_lo_export_enabled(true, “lo1”, 0)
>>>>
>>>> % enable the 1:4 splitter output port
>>>> get_device()->get_tree()->access<bool>("mboards/0/dboards/A/tx_frontends/0/los/lo1/lo_distribution/LO_OUT_0/export").set(true)
>>>>
>>> I don't think the current GR code has support for controlling the splitter,
>>> so a "code snippet" would likely be required.
>>>
>>>
>>>>>> To unsubscribe send an email to usrp-users-le...@lists.ettus.com
>>>
>
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