Timing and Synchronization

Access and control radio time, schedule operations, and synchronize radio clocks, time, and phase

Create Wireless Testbench™ radio objects that you can use to:

  • Verify the lock status of the reference clock, local oscillators, or GPS disciplined oscillator (GPSDO) on the radio.

  • Get time and GPS information from the radio.

  • Control the timing of operations on your radio.

  • Synchronize the radio time on multiple radios.

You can also measure and analyze the relative phase offsets of RF channels on a single radio or across multiple radios configured as baseband transceivers.

Objects

expand all

wt.radio.E320Interface with USRP E320 radio (Since R2025a)
wt.radio.N300Interface with USRP N300 radio (Since R2025a)
wt.radio.N310Interface with USRP N310 radio (Since R2025a)
wt.radio.N320Interface with USRP N320 radio (Since R2025a)
wt.radio.N321Interface with USRP N321 radio (Since R2025a)
wt.radio.X300Interface with USRP X300 radio (Since R2025a)
wt.radio.X310Interface with USRP X310 radio (Since R2025a)
wt.radio.X410Interface with USRP X410 radio (Since R2025a)
basebandPhaseAnalyzerMeasure relative phase offsets between baseband waveforms (Since R2026a)

Functions

expand all

radioConfigurationsCreate radio object or list radio setup configurations (Since R2022a)
referenceLockedStatusLock status of radio to 10 MHz reference clock (Since R2025a)
loLockedStatusLock status of local oscillators (Since R2025a)
gpsLockedStatusLock status of GPSDO to GPS constellation (Since R2025a)
getRadioTimeCurrent radio time (Since R2025a)
getTimeLastPPSRadio time of last pulse per second signal (Since R2025a)
setTimeNextPPSSet radio time on next pulse per second signal (Since R2025a)
hasGPSDODetermine if radio has GPSDO (Since R2026a)
getGPSTimeGPS time from GPSDO (Since R2025a)
getGPSNMEANMEA GGA sentence from GPSDO (Since R2025a)
setCommandTimeSet time for applying changes to RF properties (Since R2025a)
getCommandTimeCurrently set command time (Since R2025a)
clearCommandTimeClear currently set command time (Since R2025a)
measureAntennaPhaseEstimate relative phase offsets of transmit or capture antennas (Since R2026a)

Topics

Featured Examples

Connect and Synchronize Multiple NI USRP Radios

Connect and Synchronize Multiple NI USRP Radios

Connect and time-synchronize two NI USRP radios and capture data.

New
Estimate Direction of Arrival Using MUSIC Algorithm and TwinRX Daughterboards

Estimate Direction of Arrival Using MUSIC Algorithm and TwinRX Daughterboards

Estimate the direction of arrival of a signal with a multiple signal classification (MUSIC) algorithm using a USRP™ X310 radio with TwinRX daughterboards.