Add diagrams

docs/Overview.md

@@ -69,6 +69,10 @@ The `statusReportingDelay` property allows clients to customize the reporting de
 
 * Once any Sender activation `statusReportingDelay` has elapsed and the Sender isn't being [deactivated](#deactivating-a-sender), all domain specific statuses MUST delay the transition to a more healthy state by the configured `statusReportingDelay` value and MUST only make the transition if the healthier state is maintained for the duration. All domain specific statuses MUST make a transition to a less healthy state without delay.
 
+| ![Status reporting delay](images/status-reporting-delay.png) |
+|:--:|
+| _**Status reporting delay**_ |
+
 ### Sender overall status
 
 The purpose of the overallStatus is to abstract and combine the specific domain statuses of a monitor into a single status which can be more easily observed and displayed by a simple client.
@@ -81,6 +85,10 @@ Devices MUST follow the rules listed below when mapping specific domain statuses
 * When the Sender is Active the overallStatus takes the worst state across the different domains (if one status is PartiallyHealthy (or equivalent) and another is Unhealthy (or equivalent) then the overallStatus would be Unhealthy)
 * The overallStatus is Healthy only when all domain statuses are either Healthy or a neutral state (e.g. Not used)
 
+| ![Overall status mapping examples](images/overall-status.png) |
+|:--:|
+| _**Overall status mapping examples**_ |
+
 ### Sender connectivity
 
 [NcSenderMonitor](https://specs.amwa.tv/nmos-control-feature-sets/branches/publish-status-reporting/monitoring/#ncsendermonitor) includes the following specific items covering the connectivity domain:
@@ -256,6 +264,10 @@ When a sender is being deactivated it MUST cleanly interrupt its transmission by
 * transmissionStatus
 * essenceStatus
 
+| ![Deactivation transition example](images/deactivation.png) |
+|:--:|
+| _**Deactivation transition example**_ |
+
 ### Touchpoints and IS-04 senders
 
 Sender monitors make use of the [Touchpoints](https://specs.amwa.tv/ms-05-02/latest/docs/NcObject.html#touchpoints) mechanism inherited from [NcObject](https://specs.amwa.tv/ms-05-02/latest/docs/NcObject.html) to attach to the correct sender identity.