diff --git a/OOequipment/Equipment.m b/OOequipment/Equipment.m
index b8d2ed8..457f7f6 100644
--- a/OOequipment/Equipment.m
+++ b/OOequipment/Equipment.m
@@ -23,10 +23,34 @@ classdef Equipment < handle
             id = ecq.query('*idn?');
         end
         
+        function clear(ecq)
+            ecq.write('*cls');
+        end
+        
+        function opc(ecq)
+            ecq.query('*OPC?');
+        end
+        
         function unlock(ecq)
+            if ecq.channel >= 0
+                fprintf(ecq.tcp,'++loc');
+                ecq.locked = false;
+            else
+                warning('Device does not support unlocking')
+            end
         end
         
         function lock(ecq)
+            if ecq.channel >= 0
+                fprintf(ecq.tcp,'++llo');
+                ecq.locked = true;
+                else
+                warning('Device does not support locking')
+            end
+        end
+        
+        function beep(ecq)
+            ecq.write('SYST:BEEP')
         end
         
         function delete(ecq)
@@ -57,6 +81,8 @@ classdef Equipment < handle
         function e = get.error(ecq)
             e = ecq.query('SYSTem:ERRor?');
         end
+        
+        
     end
     methods (Static)
         function tcpobject = getTCP(ipAddress,port)
@@ -87,6 +113,10 @@ classdef Equipment < handle
             end
         end
         
+        function bool = isnum(input)
+            bool = isnumeric(input)&&isscalar(input);
+        end
+        
         function iptest(ipAddress)
             validip = regexp(ipAddress,'^(?:(25[0-5]|2[0-4][0-9]|[01]?[0-9]?[0-9])\.(25[0-5]|2[0-4][0-9]|[01]?[0-9]?[0-9])\.(25[0-5]|2[0-4][0-9]|[01]?[0-9]?[0-9])\.(25[0-5]|2[0-4][0-9]|[01]?[0-9]?[0-9]))$', 'once');
             if isempty(validip)