On 30/11/2022 17:46, Rob Kossler 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
It has also been suggested to use "init_cals=BASIC" in the device
argument in this situation. It's not clear to me exactly what
that does.
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
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