added capture time for every sweep

python_app/hardware_full/multi_device_service.py

@@ -332,10 +332,15 @@ class MultiDeviceLibreVnaService:
         assert self._sweep_configuration is not None
 
         self._controller.configure_continuous_sweep(self._sweep_configuration)
+        # Bound the sweep itself rather than reusing `capture_start_ns`: the latter
+        # is taken before any retry/recovery, so it would overstate how long the
+        # traces below took to measure.
+        sweep_start_ns = time.monotonic_ns()
         result = self._controller.collect_running_sweep_cycles(
             1,
             datapoint_timeout_seconds=LIBREVNA_NATIVE_SWEEP_TIMEOUT_SECONDS,
         )
+        sweep_end_ns = time.monotonic_ns()
         normalized_s_parameters = {
             str(name).lower(): np.asarray(values, dtype=np.complex64)
             for name, values in result.s_parameters.items()
@@ -356,6 +361,11 @@ class MultiDeviceLibreVnaService:
                         frequency_hz=frequencies,
                         s11=reflection,
                         s21=self._required_s_parameter(normalized_s_parameters, s_parameter_name),
+                        # Every combo comes out of the same synchronized cycle, so
+                        # they all share one window — no combo was measured earlier
+                        # or later than another here.
+                        capture_start_ns=sweep_start_ns,
+                        capture_end_ns=sweep_end_ns,
                     )
                 )
 
@@ -368,6 +378,7 @@ class MultiDeviceLibreVnaService:
 
     def _acquire_mock_collection(self, collection_id: int, capture_start_ns: int) -> SweepCollection:
         assert self._sweep_configuration is not None
+        mock_sweep_start_ns = time.monotonic_ns()
         points = int(self._sweep_configuration.points)
         frequencies = np.linspace(
             self._sweep_configuration.start_hz,
@@ -393,6 +404,8 @@ class MultiDeviceLibreVnaService:
                         frequency_hz=frequencies,
                         s11=s11,
                         s21=s21,
+                        capture_start_ns=mock_sweep_start_ns,
+                        capture_end_ns=time.monotonic_ns(),
                     )
                 )
         self._mock_phase += 0.05