Only add DAQ train stride on manager overview scene if present in manager schema

src/calng/scenes.py

@@ -1451,6 +1451,39 @@ def manager_device_overview(
     mds_hash = schema_to_hash(manager_device_schema)
     cds_hash = schema_to_hash(correction_device_schema)
 
+    data_throttling_children = [
+        LabelModel(
+            text="Frame filter",
+            width=11 * BASE_INC,
+            height=BASE_INC,
+        ),
+        EditableRow(
+            manager_device_id,
+            mds_hash,
+            "managedKeys.frameFilter.type",
+            7,
+            4,
+        ),
+        EditableRow(
+            manager_device_id,
+            mds_hash,
+            "managedKeys.frameFilter.spec",
+            7,
+            4,
+        ),
+    ]
+
+    if "managedKeys.daqTrainStride" in mds_hash:
+        # Only add DAQ train stride if present on the schema, may be
+        # disabled on the manager.
+        data_throttling_children.insert(0, EditableRow(
+            manager_device_id,
+            mds_hash,
+            "managedKeys.daqTrainStride",
+            7,
+            4,
+        ))
+
     return VerticalLayout(
         HorizontalLayout(
             ManagerDeviceStatus(manager_device_id),
@@ -1472,34 +1505,7 @@ def manager_device_overview(
                     max_depth=2,
                 ),
                 titled("Data throttling")(boxed(VerticalLayout))(
-                    children=[
-                        EditableRow(
-                            manager_device_id,
-                            mds_hash,
-                            "managedKeys.daqTrainStride",
-                            7,
-                            4,
-                        ),
-                        LabelModel(
-                            text="Frame filter",
-                            width=11 * BASE_INC,
-                            height=BASE_INC,
-                        ),
-                        EditableRow(
-                            manager_device_id,
-                            mds_hash,
-                            "managedKeys.frameFilter.type",
-                            7,
-                            4,
-                        ),
-                        EditableRow(
-                            manager_device_id,
-                            mds_hash,
-                            "managedKeys.frameFilter.spec",
-                            7,
-                            4,
-                        ),
-                    ],
+                    children=data_throttling_children,
                     padding=0,
                 ),
             ),