Hi there,
A few months ago I ended up with a pair of USRP E312's and u-blox ANN-MB-00
GPS antennas. I was able to synchronize both devices and acquire
properly aligned samples and things are looking good.
However, today I realized that the u-blox antenna I have is an active
antenna and checking i
On 2021-12-14 12:12, Temir Karakurum wrote:
Hi there,
A few months ago I ended up with a pair of USRP E312's and u-blox
ANN-MB-00 GPS antennas. I was able to synchronize both devices and
acquire properly aligned samples and things are looking good.
However, today I realized that the u-blox a
Hi Marcus,
Thanks for the quick reply! Is the bias-tee available only for the GPS port?
Can you similarly provide DC power to an LNA through the RF ports?
Best,
Temir
On Tue, Dec 14, 2021 at 8:17 PM Marcus D. Leech
wrote:
> On 2021-12-14 12:12, Temir Karakurum wrote:
>
> Hi there,
>
> A few mo
Dear Temir,
https://files.ettus.com/schematics/e310/ , the daughterboard schematic (e310_db.pdf), page
7: no, there's no biasing on the RF ports.
Best regards,
Marcus
DISCLAIMER: Any attached Code is provided As Is. It has not been tested or
validated as a product, for use in a deployed app
Dear Huacheng,
while it's hard to rule something like that out, it'd be surprising. Maybe you had a very
strong interferer that led to undesired intermodulation? Next time it happens, try to scan
through the overall spectrum (not only within your bandwidth of interest!) with a spectrum
analyze
Hi Jason,
if I understand your problem correctly, this is a bit like the problem that, say,
independent user equipment (UE) devices (==mobile phones) need to solve in a cellular
network: they all need to align their clocks to the network-provided time, based on some
synchronization signal.
Y
Hi again,
Thanks for pointing me to the schematic. I guess my final question is why
Ettus' official store recommends different antennas for different USRP
series.
For instance; datasheet of 3V GPS antenna (
https://www.ettus.com/wp-content/uploads/2019/01/Trimble_GPS_Antenna_DS.pdf)
for N-series (
The X series and B series use the LC_XO series GPSDO modules Jackson Labs.
I’d look through the specs for those modules for any Current limits.
I’m literally underground in Toronto right now or I’d stuff those documents
myself.
Sent from my iPhone
> On Dec 14, 2021, at 3:42 PM, Temir Karak
Hi,
Thanks for finding time to answer while commuting :)
Quickly checking LC_XO webpage (
http://www.jackson-labs.com/index.php/products/lc_xo):
"The unit includes internal 3.3V to 5V DC-DC power supplies and filters,
and can provide 5V at up to 50mA to external customer circuitry, as well as
to t
The only thing I can think of off the top of my head is RF gain differences.
Sent from my iPhone
> On Dec 14, 2021, at 4:09 PM, Temir Karakurum wrote:
>
>
> Hi,
>
> Thanks for finding time to answer while commuting :)
> Quickly checking LC_XO webpage
> (http://www.jackson-labs.com/index.p
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