Hey Eugene,\ \ Slight correction to what Dennis wrote earlier today.\ \ While most timed commands in general should work on the X440, there are some specific Hardware limitations regarding the way the RFSoC is reset during frequency tuning that result in the X440 not supporting timed frequency tuning.
\ I think the issue is that there are multiple internal components which need to be reset at the same time and not all of those components support timed resets.\ \ See the manual here: <https://uhd.readthedocs.io/en/latest/page_usrp_x4xx.html#x4xx_usage_timedcmds>\ \ I am not familiar with the details regarding which internal components are at fault, but maybe someone else can fill in the gaps, I just wanted to clarify that while most timed commands should work, at least timed tuning is not officially supported.\ \ Regards,\ Niels --- Jurk, Dennis wrote: > Hello Eugene, > > timed commands are supported on the X440. Set the command time with > set_command_time and then send the commands (set_rx_freq or set_tx_freq for > freq tuning). > > Best regards > Dennis Jurk > > Von: Eugene Grayver [[email protected]](mailto:[email protected]) > Gesendet: Dienstag, 16. Juni 2026 22:56 > An: usrp-users [[email protected]](mailto:[email protected]) > Betreff: \[USRP-users\] X440 timed commands for tuning > > Why are timed commands (specifically freq tuning) not supported on the X440? > The RFSoC definitely allows using FPGA (PL) logic to trigger cross-tile > configurations. > > Eugene Grayver, Ph.D. > Principal Engineer > 310-336-1274
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