@Ahmed-Mohamed Hi Ahmed,
- we do not have a PIN for event mark. Inside the module, the GNSS chipset outputs its 1PPS signal for external device time sync. Also, the IMU data inside the module is time stamped by GNSS time.
- The module have L1, L2 and L5 capability, however, can only do two freqeuncies on one configuration, we can do L1/L2 and L1/L5 configurations using different GNSS chipset firmware that can be provided to you.