waterlinked · thilo-huck · Nov 27, 2025 · Oct 22, 2025 · Oct 23, 2025 · Oct 23, 2025
diff --git a/docs/dvl/dvl-protocol.md b/docs/dvl/dvl-protocol.md
@@ -773,7 +773,7 @@ The available range modes are:
 | -- | -- | -- | -- |
 | 0 | 0.05 | 0.6 | 15 |
 | 1 | 0.3 | 3.0 | 10 |
-| 2 | 1.5 | 14 | 1 - 6 |
+| 2 | 1.5 | 14 | 5 - 6 |
 | 3 | 7.7 | 36 | 7 - 8 |
 | 4 | 15 | max | 2 - 4 |
 

diff --git a/docs/dvl/faq.md b/docs/dvl/faq.md
@@ -36,7 +36,7 @@ A great setup for lab work is to keep the DVL submerged in a small bucket of wat
 We realize it may be impractical to avoid air usage altogether when the DVL is mounted. One option is to disable the DVL’s acoustics while it is out of water to reduce heating. This option is available under **Configuration** in the DVL GUI.
 
 !!! Note
-    If you do use the DVL in air, we strongly recommend running software version 2.0.8 or higher, which allows the DVL to shut down safely if it reaches a critical temperature.
+    If you do use the DVL in air, we strongly recommend running software version 2.0.8 or higher so the DVL can shut down safely if it overheats. See [FAQ #9](#9-can-the-dvl-overheat) for shutdown behavior.
 
 ---
 
@@ -75,7 +75,7 @@ If you notice periodic data dropouts or lost connections, there are a few common
 
 3. **Thermal Shutdown**  
 
-    - To protect the DVL from damage due to overheating, it may shut down automatically. This will result in a lost connection until it cools and restarts.
+    - If the DVL overheats it will shut down and drop the link until it cools and restarts. See [FAQ #9](#9-can-the-dvl-overheat) for details on thresholds and restarts.
 
 ---
 
@@ -124,4 +124,9 @@ Yes, the DVL can operate over soft bottoms. However, softer seabeds absorb more
 Most likely your DVL is running an older software version that requires you to set the time before you can update. This is not and issue when updating from version 2.6.5
 For more software update details please see [DVL Software Updates.](sw-update.md)
 
----
+---
+
+## 15. How should I maintain the DVL?
+After operating in seawater, brackish water, chlorinated pools, or any medium other than freshwater, rinse the DVL thoroughly with fresh water to remove residues and salt deposits. Once dry, wipe the exterior with a clean, dry cloth. Avoid solvents or abrasive cleaners.
+
+---
diff --git a/docs/sonar-3d/sonar-3d-15-api.md b/docs/sonar-3d/sonar-3d-15-api.md
@@ -3,6 +3,8 @@
 ## Introduction
 The **Water Linked Sonar 3D-15** provides real-time 3D views of underwater environments using a low-bandwidth **Range Image Protocol (RIP1)**. This protocol efficiently transmits data such as 3D points or grayscale bitmaps over UDP multicast, enabling live visualization, analysis, or archival for later use.
 
+A Python example implementation of the Sonar API is available on [github](https://github.com/waterlinked/Sonar-3D-15-api-example).
+
 ---
 
 ## Range Image Protocol (RIP1)
@@ -53,6 +55,7 @@ RIP1 supports several Protobuf-encoded messages, including:
 ## Coordinate and Image Conventions
 **Axes** (right-handed):
 
+- **Origin**: The point cloud uses a mechanical origin located on the backplate, centered between the mounting screw holes.
 - **x**: forward  
 - **y**: right  
 - **z**: downward  

diff --git a/docs/sonar-3d/sonar-3d-15-faq.md b/docs/sonar-3d/sonar-3d-15-faq.md
@@ -24,12 +24,7 @@ Yes. The Sonar 3D-15 includes an internal thermal shutdown to prevent damage to
 ---
 
 ## 4. What are the default network settings of the Sonar 3D-15?
-By default, the Sonar 3D-15 uses **DHCP** (Dynamic Host Configuration Protocol). This means it attempts to get an IP address automatically from a DHCP server on your network.
-
-However, the Sonar 3D-15 is always accessible via its **fallback IP** `192.168.194.96`, even if no DHCP server is present. To use the fallback IP, configure your computer's network interface to an IP address in the `192.168.194.x` range (e.g., `192.168.194.90`) with a netmask of `255.255.255.0`.
-
-### Can I disable DHCP and set a static IP?
-Yes, you can disable DHCP in the config settings in the GUI and specify a custom static IP address. This is helpful if you need a fixed IP in your networking environment.
+By default, the Sonar 3D-15 uses **DHCP** to request an address. If no DHCP server answers, it is always accessible on the fallback IP `192.168.194.96`. For a step-by-step guide to using the fallback IP, mDNS, or setting a static IP in the GUI, see [Sonar 3D-15 Networking](sonar-3d-15-networking.md).
 
 ---
 
@@ -42,4 +37,9 @@ For advanced integrations, you can use the Sonar 3D-15’s API to develop custom
 ---
 
 ## 6. The performance is not as expected?
-If the performance is not as expected and you can not find a solution in this documentation, please create a diagnostic log with your Sonar 3D-15 and submit a [support ticket](https://waterlinked.com/support) with the Sonar 3D diagnostic log file attached. 
+If the performance is not as expected and you can not find a solution in this documentation, please create a diagnostic log with your Sonar 3D-15 and submit a [support ticket](https://waterlinked.com/support) with the Sonar 3D diagnostic log file attached. 
+
+---
+
+## 7. How should I maintain the Sonar 3D-15?
+After operating in seawater, brackish water, chlorinated pools, or any medium other than freshwater, rinse the unit thoroughly with fresh water to remove residues and salt deposits. Once dry, wipe the exterior with a clean, dry cloth. Avoid solvents or abrasive cleaners.