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Diffstat (limited to 'host/docs/general.rst')
| -rw-r--r-- | host/docs/general.rst | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/host/docs/general.rst b/host/docs/general.rst index aa6ac7aa0..5df89fc19 100644 --- a/host/docs/general.rst +++ b/host/docs/general.rst @@ -32,24 +32,26 @@ Tuning the receive chain: :: //tuning to a desired center frequency - usrp->set_rx_freq(my_frequency_in_hz); + usrp->set_rx_freq(target_frequency_in_hz); --OR-- //advanced tuning with tune_request_t - uhd::tune_request_t tune_req(my_frequency_in_hz, desired_lo_offset); + uhd::tune_request_t tune_req(target_frequency_in_hz, desired_lo_offset); //fill in any additional/optional tune request fields... usrp->set_rx_freq(tune_req); +More information can be fonud in *tune_request.hpp*. + ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ RF front-end settling time ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ After tuning, the RF front-end will need time to settle into a usable state. -Typically, this means that the local oscillators must be given time to lock before streaming begins. -Lock time is not consistent; it varies depending upon the device and requested settings. -After tuning and before streaming, the user should -wait for the "lo_locked" sensor to become true, -or sleep for a conservative amount of time (perhaps a second). +Typically, this means that the local oscillators must be given time to lock +before streaming begins. Lock time is not consistent; it varies depending upon +the device and requested settings. After tuning and before streaming, the user +should wait for the "lo_locked" sensor to become true, or sleep for +a conservative amount of time (perhaps a second). Pseudo-code for dealing with settling time after tuning on receive: :: |