The Trigger In/Out port isn't supported, unfortunately.
The alternative would be to use Time Synchronized Operations. It should be possible to configure the basebandTransmitter to transmit at a specified time, synchronised to the pulse per second (PPS) signal. As long as you can synchronise the spectrum analyzer to the same signal, you may be able to figure out a way to synchronise the two.
For example (untested)
- Carefully read the documentation and examples for Time Synchronized Operations.
- Configure a radio configuration in the radioSetupWizard to use an external PPS signal.
- Synchronise the radio to the PPS signal using setTimeNextPPS and getRadioTime, see example Reset Radio Time on Next PPS Signal.
- Schedule a transmission at time N (synchronised to the PPS), see example Transmit Data at Scheduled Time with Baseband Transmitter.
- Ensure Spectrum Analyzer is triggered by same PPS signal.
