review comments

Author: rerpha

doc/Web.md

@@ -11,5 +11,5 @@ webdashboard/MCR-News-in-Teams
 ```
 
 ```{seealso}
-- [WebServer](systems/Webserver), for the physical computer on which the web dashboard is hosted.
+- [WebServer](systems/Webserver) for the physical computer where the [PVWS](webdashboard/PVWS) instance, which the [Web Dashboard](webdashboard/Web-Dashboard) relies on, is hosted.
 ```

doc/systems/Webserver.md

@@ -4,7 +4,6 @@
 
 NDAEXTWEB3 is a central Windows 2019 server, which is hosted on the FIT Hyper-V cluster, that runs a number of the web services associated with IBEX. The login credentials for this are in sharepoint. The server holds:
 
-* The [old IBEX web dashboard (JSON_Bourne)](/webdashboard/Web-Dashboard)
 * The [Automation application](/processes/git_and_github/Automation-Application)
 * [MCR news](https://www.isis.stfc.ac.uk/Pages/MCR-News.aspx)
 * The central proxy created [here](https://github.com/ISISComputingGroup/IBEX/issues/5112)

doc/systems/control-svcs.md

@@ -1,3 +1,4 @@
+{#controlsvcs}
 # `control-svcs`
 
 control-svcs.isis.cclrc.ac.uk

doc/webdashboard/Web-Dashboard.md

@@ -21,4 +21,11 @@ See {ref}`pvws`
 
 ### Web dashboard showing outdated or incorrect information
 
-If you cannot subscribe directly to a PV by using the [PVWS homepage](https://ndaextweb4/pvws/) ie it gets no update with a value in it, this is likely due to a central gateway issue or an issue with the NDX.
+If you cannot subscribe directly to a PV by using the [PVWS homepage](https://ndaextweb4/pvws/) ie it gets no update with a value in it, this is likely due to a gateway issue on NDAEXTWEB4, a central gateway issue (on {ref}`controlsvcs`) or an issue with the NDX.
+
+First VNC into the instrument and find out whether this is happening on the NDX. If it is, your problems are not gateway related. 
+
+If not, then try and `caget` it from your development machine. If this works, it could be a gateway issue. To narrow it down further we can `caget` with `EPICS_CA_ADDR_LIST` set to:
+- NDAEXTWEB4's restricted gateway, to prove whether issue is EPICS level or PVWS level 
+- Central gateway, to prove whether issue is at that end
+- An individual instrument directly, bypassing all gateways other than external gateway on each instrument