diff --git a/WasatchNET/COMOCTSpectrometer.cs b/WasatchNET/COMOCTSpectrometer.cs
index 17242ac..be15fcc 100644
--- a/WasatchNET/COMOCTSpectrometer.cs
+++ b/WasatchNET/COMOCTSpectrometer.cs
@@ -68,7 +68,7 @@ internal override async Task<bool> openAsync()
             }
             catch (Exception)
             {
-                return false;
+                 return false;
             }
 
             bool openBase = await base.openAsync();
@@ -86,6 +86,7 @@ internal override async Task<bool> openAsync()
             }
 
             testPattern = 0;
+            testPatternHeight = eeprom.activePixelsVert;
 
             eeprom.featureMask.PropertyChanged += FeatureMask_PropertyChanged;
             eeprom.featureMask.invertXAxis = false;
@@ -113,6 +114,14 @@ public async override Task closeAsync()
             port = null;
         }
 
+        public override void saveUserSettings()
+        {
+            string resp = "";
+            bool ok = sendCOMCommand(Opcodes.SET_USER_SETTINGS, ref resp, new float[] { 1 }, new int[] { 0 });
+            if (ok)
+                logger.debug("User settings save response: {0}", resp.Split('\r')[0].Trim());
+        }
+
         public override string firmwareRevision
         {
             get
@@ -247,6 +256,30 @@ public override int testPattern
             }
         }
 
+        public override int testPatternHeight
+        {
+            get
+            {
+                return testPatternHeight_;
+            }
+            set
+            {
+                int prevValue = testPatternHeight_;
+                string resp = "";
+                bool ok = sendCOMCommand(Opcodes.SET_TEST_HEIGHT, ref resp, new float[] { value }, new int[] { 0 });
+                if (ok)
+                {
+                    ok = sendCOMCommand(Opcodes.GET_TEST_HEIGHT, ref resp, null);
+
+                    if (ok)
+                        testPatternHeight_ = System.Convert.ToInt32(resp.Split('\r')[0]);
+                    else
+                        testPatternHeight_ = prevValue;
+                }
+            }
+        }
+
+
         public override float linePeriod
         {
             get
diff --git a/WasatchNET/IOpcodes.cs b/WasatchNET/IOpcodes.cs
index 86b5adb..61992b8 100644
--- a/WasatchNET/IOpcodes.cs
+++ b/WasatchNET/IOpcodes.cs
@@ -75,6 +75,7 @@ public enum Opcodes
         GET_OPT_LASER_TYPE,
         GET_SELECTED_ADC,
         GET_TEST_PATTERN,
+        GET_TEST_HEIGHT,
         GET_TRIGGER_DELAY,
         GET_TRIGGER_OUTPUT,
         GET_TRIGGER_SOURCE,
@@ -122,9 +123,11 @@ public enum Opcodes
         SET_MODEL_CONFIG_FX2,
         SET_SELECTED_ADC,
         SET_TEST_PATTERN,
+        SET_TEST_HEIGHT,
         SET_TRIGGER_DELAY,
         SET_TRIGGER_OUTPUT,
         SET_TRIGGER_SOURCE,
+        SET_USER_SETTINGS,
         WRITE_LIBRARY,
         PROCESS_LIBRARY,
     }
diff --git a/WasatchNET/Opcodes.cs b/WasatchNET/Opcodes.cs
index fe80cd9..607d756 100644
--- a/WasatchNET/Opcodes.cs
+++ b/WasatchNET/Opcodes.cs
@@ -212,6 +212,7 @@ public Dictionary<Opcodes, string> getDict()
             cmd[Opcodes.GET_INTEGRATION_TIME                   ] = "r tint";
             cmd[Opcodes.GET_LINE_PERIOD                        ] = "r tper";
             cmd[Opcodes.GET_TEST_PATTERN                       ] = "r srce";
+            cmd[Opcodes.SET_TEST_HEIGHT                        ] = "r tsth";
             cmd[Opcodes.GET_MODEL_CONFIG                       ] = "r deid";
             cmd[Opcodes.GET_FIRMWARE_REVISION                  ] = "r dfwv";
             cmd[Opcodes.GET_OCT_ANALOG_GAIN                    ] = "r pamp";
@@ -225,6 +226,8 @@ public Dictionary<Opcodes, string> getDict()
             cmd[Opcodes.SET_INTEGRATION_TIME                   ] = "w tint";
             cmd[Opcodes.SET_LINE_PERIOD                        ] = "w tper";
             cmd[Opcodes.SET_TEST_PATTERN                       ] = "w srce";
+            cmd[Opcodes.SET_TEST_HEIGHT                        ] = "w tsth";
+            cmd[Opcodes.SET_USER_SETTINGS                      ] = "w scfg";
             cmd[Opcodes.SET_OCT_ANALOG_GAIN                    ] = "w pamp";
             cmd[Opcodes.SET_DETECTOR_GAIN                      ] = "w gain";
             cmd[Opcodes.SET_DETECTOR_OFFSET                    ] = "w offs";
diff --git a/WasatchNET/WPOCTSpectrometer.cs b/WasatchNET/WPOCTSpectrometer.cs
index 50fa379..2149dd7 100644
--- a/WasatchNET/WPOCTSpectrometer.cs
+++ b/WasatchNET/WPOCTSpectrometer.cs
@@ -343,6 +343,11 @@ public override ushort[] getFrame(bool direct = true)
 
         public override bool resetFPGA() => true;
 
+        public virtual void saveUserSettings()
+        {
+
+        }
+
         public override string serialNumber
         {
             get { return eeprom.serialNumber; }
@@ -526,6 +531,19 @@ public virtual int testPattern
         }
         protected int testPattern_ = 0;
 
+        public virtual int testPatternHeight
+        {
+            get
+            {
+                return testPatternHeight_;
+            }
+            set
+            {
+                testPatternHeight_ = value;
+            }
+        }
+        protected int testPatternHeight_ = 0;
+
         public virtual float linePeriod
         {
             get
diff --git a/lib/x64/WasatchNET.dll b/lib/x64/WasatchNET.dll
index 5d80b63..de31b2a 100644
Binary files a/lib/x64/WasatchNET.dll and b/lib/x64/WasatchNET.dll differ
diff --git a/lib/x86/WasatchNET.dll b/lib/x86/WasatchNET.dll
index 328c008..42d72f6 100644
Binary files a/lib/x86/WasatchNET.dll and b/lib/x86/WasatchNET.dll differ