Hi Jonathan, What Rob said is correct. You need to supply a 5 GHz LO initially so that the startup calibrations for the N310 will be correct. However, if I recall correctly, the device should still initialize even with an LO not equal to 5 GHz (though your going to see imaging / possible LO leakage in the frequency domain if this is the case).
Is your LO power within spec of the device? The ad9371 requires an external LO between +0 dBm and +6 dBm with higher frequencies requiring higher power. Providing an LO below that power spec will give you the MYKONOS_waitInitCals() error. If you are within that spec, then you can modify your init_cals and incrementally test adding calibrations until you figure out which calibration is throwing the error. So your args would look like this initially ( --args "addr=192.168.10.2,master_clock_rate=153.6e6,tx_lo_source=external,init_cals=BASIC") and then you can add more init_cals by doing init_cals=BASIC|TX_ATTENUATION_DELAY|PATH_DELAY etc. The | is the append operation. The calibrations are listed in the link below. https://files.ettus.com/manual/page_usrp_n3xx.html#n3xx_mg_calibrations Hope this helps Scott On Wed, Nov 30, 2022 at 4:48 PM Rob Kossler <rkoss...@nd.edu> wrote: > Hi Jonathan, > At startup, the init_cal will always be conducted at 2.5GHz requiring an > external LO at 5 GHz. After the init cal, then you can re-tune your > external LO to twice the desired operating frequency. It wasn't clear to > me from your comment if your external LO is initially configured to 5 GHz > or to 2 GHz. If the latter, try with 5 GHz and if startup occurs > correctly, retune it to 2 GHz after that point. > Rob > > On Wed, Nov 30, 2022 at 1:43 PM Jonathan Tobin <to...@augustusaero.com> > wrote: > >> Hello all - I am trying to transmit a test waveform from an N310 using >> the sample program tx_waveforms. When I set "tx_lo_source=external" I get >> the error below. When I set it to internal, the program runs smoothly, but >> there is no output. I am supplying an external LO at twice the desired >> output frequency. I am using uhd 4.3.0.0. >> >> >> ./tx_waveforms --args >> "addr=192.168.10.2,master_clock_rate=153.6e6,tx_lo_source=external" --freq >> 1e9 --gain 10 --bw 1e6 --rate 9.6e6 --subdev "A:1" --channels "0" >> --wave-freq 100e3 >> >> Creating the usrp device with: >> addr=192.168.10.2,master_clock_rate=153.6e6,tx_lo_source=external... >> [INFO] [UHD] linux; GNU C++ version 7.5.0; Boost_106501; >> UHD_4.3.0.HEAD-0-g1f8fd345 >> [INFO] [MPMD] Initializing 1 device(s) in parallel with args: >> mgmt_addr=192.168.10.2,type=n3xx,product=n310,serial=3218B5F,name=ni-n3xx-3218B5F,fpga=HG,claimed=False,addr=192.168.10.2,master_clock_rate=153.6e6,tx_lo_source=external >> [INFO] [MPM.PeriphManager] init() called with device args >> `fpga=HG,master_clock_rate=153.6e6,mgmt_addr=192.168.10.2,name=ni-n3xx-3218B5F,product=n310,tx_lo_source=external,clock_source=internal,time_source=internal'. >> [ERROR] [RPC] RuntimeError: MYKONOS_waitInitCals() returned an ARM error >> >> [ERROR] [MPM.RPCServer] init() failed with error: RuntimeError: >> MYKONOS_waitInitCals() returned an ARM error >> >> Error: RuntimeError: Error during RPC call to `init'. Error message: >> RuntimeError: MYKONOS_waitInitCals() returned an ARM error >> >> >> >> Thanks, >> Jonathan >> _______________________________________________ >> USRP-users mailing list -- usrp-users@lists.ettus.com >> To unsubscribe send an email to usrp-users-le...@lists.ettus.com >> > _______________________________________________ > USRP-users mailing list -- usrp-users@lists.ettus.com > To unsubscribe send an email to usrp-users-le...@lists.ettus.com >
_______________________________________________ USRP-users mailing list -- usrp-users@lists.ettus.com To unsubscribe send an email to usrp-users-le...@lists.ettus.com
