diff --git a/tools/meas.py b/tools/meas.py
index ad5d3be..f1e95e9 100644
--- a/tools/meas.py
+++ b/tools/meas.py
@@ -369,12 +369,12 @@ if __name__ == "__main__":
 
   # 3. get and process the commandline arguments/parameter
   #if args.get_config == True and args.start_meas == False:
-  #  print "Send: GET_CONFIG"
+  #  print "sent: GET_CONFIG"
   #  sendSerialData([CC_CMD_GET_CONFIG])
   #  dataSend = dataSend + 1
 
   if args.start_freq != None:
-    print "Send: SET_START_FREQ"
+    print "sent: SET_START_FREQ"
     sendSerialData([CC_CMD_SET_START_FREQ,
                     (args.start_freq & 0xff000000) >> 24,
                     (args.start_freq & 0x00ff0000) >> 16,
@@ -383,7 +383,7 @@ if __name__ == "__main__":
     dataSend = dataSend + 1
 
   if args.end_freq != None:
-    print "Send: SET_END_FREQ"
+    print "sent: SET_END_FREQ"
     sendSerialData([CC_CMD_SET_END_FREQ,
                     (args.end_freq & 0xff000000) >> 24,
                     (args.end_freq & 0x00ff0000) >> 16,
@@ -392,7 +392,7 @@ if __name__ == "__main__":
     dataSend = dataSend + 1
 
   if args.step_freq != None:
-    print "Send: SET_FREQ_STEP"
+    print "sent: SET_FREQ_STEP"
     sendSerialData([CC_CMD_SET_FREQ_STEP,
                     (args.step_freq & 0xff000000) >> 24,
                     (args.step_freq & 0x00ff0000) >> 16,
@@ -401,20 +401,20 @@ if __name__ == "__main__":
     dataSend = dataSend + 1
 
   if args.intervall != None:
-    print "Send: SET_INTERVALL"
+    print "sent: SET_INTERVALL"
     sendSerialData([CC_CMD_SET_INTERVALL,
                     (args.intervall & 0x0000ff00) >>  8,
                     (args.intervall & 0x000000ff)])
     dataSend = dataSend + 1
 
   if args.drive_str != None:
-    print "Send: SET_DRIVE_STRENGTH"
+    print "sent: SET_DRIVE_STRENGTH"
     sendSerialData([CC_CMD_SET_DRIVE_STRENGTH,
                     args.drive_str])
     dataSend = dataSend + 1
 
   if args.start_meas == True:
-    print "Send: START_MEASUREMENT"
+    print "sent: START_MEASUREMENT"
     sendSerialData([CC_CMD_START_MEASUREMENT])
     dataSend = dataSend + 1
 
@@ -483,14 +483,12 @@ if __name__ == "__main__":
         elif e[1] == MSG_TYPE_MEAS_END_INFO:
           print "recv: END INFO"
 
-          if args.output_file != None:
-            pass # TODO impl
-          if args.show_graph == True:
-            meas_freq = []
-            meas_ratio = []
-            meas_r = []
-            meas_p = []
+          meas_freq = []
+          meas_ratio = []
+          meas_r = []
+          meas_p = []
 
+          if args.output_file != None or args.output_file != None:
             for m in meas_data:
 
               meas_freq.append(m[0])
@@ -498,7 +496,7 @@ if __name__ == "__main__":
               if m[1] > m[2]:
                 meas_ratio.append(m[1] / m[2])
               elif m[1] < m[2]:
-                meas_ratio.append(m[1] / m[2])
+                meas_ratio.append(m[2] / m[1])
               else:
                 meas_ratio.append(1)
 
@@ -512,9 +510,15 @@ if __name__ == "__main__":
               else:
                 meas_p.append(0)
 
+          if args.output_file != None:
+            pass # TODO impl
+
+          if args.show_graph == True:
             plt.plot(meas_freq, meas_ratio)
             plt.plot(meas_freq, meas_r)
             plt.plot(meas_freq, meas_p)
+
+            print "Please close the mathplot window to exit..."
             plt.show()
 
         else: