Hello,
I'm trying to create a simple loopback application (using the same DB for TX
and RX) with my X310, but I'm having problems. The setup is an X310 with WBX120
(TX/RX for transmission and RX2 for receiving). I traced the issue back to
running the "txrx_loopback_to_file" uhd example with following parameters:
./txrx_loopback_to_file --tx-rate 1e6 --rx-rate 1e6 --tx-freq 1e9 --rx-freq 1e9
I get the following error:
Creating the transmit usrp device with: ...
\[INFO\] \[UHD\] linux; GNU C++ version 9.4.0; Boost_107100;
UHD_4.2.0.1-0-g321295fb
\[INFO\] \[X300\] X300 initialization sequence...
\[INFO\] \[X300\] Maximum frame size: 8000 bytes.
\[INFO\] \[X300\] Radio 1x clock: 200 MHz
Creating the receive usrp device with: ...
Using TX Device: Single USRP:
Device: X-Series Device
Mboard 0: X310
RX Channel: 0
RX DSP: 0
RX Dboard: A
RX Subdev: WBX-120 RX+GDB
RX Channel: 1
RX DSP: 1
RX Dboard: B
RX Subdev: WBX-120 RX+GDB
TX Channel: 0
TX DSP: 0
TX Dboard: A
TX Subdev: WBX-120 TX+GDB
TX Channel: 1
TX DSP: 1
TX Dboard: B
TX Subdev: WBX-120 TX+GDB
Using RX Device: Single USRP:
Device: X-Series Device
Mboard 0: X310
RX Channel: 0
RX DSP: 0
RX Dboard: A
RX Subdev: WBX-120 RX+GDB
RX Channel: 1
RX DSP: 1
RX Dboard: B
RX Subdev: WBX-120 RX+GDB
TX Channel: 0
TX DSP: 0
TX Dboard: A
TX Subdev: WBX-120 TX+GDB
TX Channel: 1
TX DSP: 1
TX Dboard: B
TX Subdev: WBX-120 TX+GDB
Setting TX Rate: 1.000000 Msps...
Actual TX Rate: 1.000000 Msps...
Setting RX Rate: 1.000000 Msps...
Actual RX Rate: 1.000000 Msps...
Setting TX Freq: 1000.000000 MHz...
Actual TX Freq: 1000.000000 MHz...
Setting RX Freq: 1000.000000 MHz...
Actual RX Freq: 1000.000000 MHz...
\[WARNING\] \[0/Radio#0\] Attempting to set tick rate to 0. Skipping.
Checking TX: LO: locked ...
Checking RX: LO: unlocked ...
Error: AssertionError: lo_locked.to_bool()
in _main
at /home/hp/uhd-4.2/host/examples/txrx_loopback_to_file.cpp:483
I have another WBX120 in slot B which returns with the same error.
However, if I transmit with the one in slot A and receive with the one on slot
B (or vice-versa) both TX and RX locks:
./txrx_loopback_to_file --tx-rate 1e6 --rx-rate 1e6 --tx-freq 1e9 --rx-freq 1e9
--tx-subdev A:0 --rx-subdev B:0 --rx-ant RX2
...
\[WARNING\] \[0/Radio#0\] Attempting to set tick rate to 0. Skipping.
Checking TX: LO: locked ...
Checking RX: LO: locked ...
Press Ctrl + C to stop streaming...
Setting device timestamp to 0...
\[WARNING\] \[0/Radio#1\] Attempting to set tick rate to 0. Skipping.
^C
Done!
I also have an SBX for which the test with the same parameters work:
./txrx_loopback_to_file --tx-rate 1e6 --rx-rate 1e6 --tx-freq 1e9 --rx-freq 1e9
\[WARNING\] \[0/Radio#0\] Attempting to set tick rate to 0. Skipping.
Checking TX: LO: locked ...
Checking RX: LO: locked ...
Press Ctrl + C to stop streaming...
Setting device timestamp to 0...
UHD version is: UHD_4.2.0.1-0-g321295fb
Any help to resolve the issue would be appreciated!
Thanks,
Balint
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