diff --git a/tools/meas.py b/tools/meas.py
index fea3936..434b17d 100644
--- a/tools/meas.py
+++ b/tools/meas.py
@@ -1,3 +1,8 @@
+# 
+# Author: klaute -Kai Lauterbach - @kailauterbach - me@klaute.de
+# Date: 09/2016
+# License: GPLv3
+# 
 
 ###############################################################################
 
@@ -496,7 +501,7 @@ if __name__ == "__main__":
           pass
 
         elif e[1] == MSG_TYPE_ANSWER_NOK:
-          print "recv: NOT OK"
+          print "recv: NOT OK on %d" % (dataSend)
 
         elif e[1] == MSG_TYPE_MEAS_FREQ_INFO:
           #print "recv: FREQ INFO"
@@ -563,6 +568,7 @@ if __name__ == "__main__":
 
           i = ((drive_str + 1) * 2.0) / 1000.0
 
+          ##### calculate the results
           if args.output_file != None or args.show_graph == True:
             for m in meas_data:
 
@@ -596,7 +602,7 @@ if __name__ == "__main__":
               r = 50.0 * vswr
               meas_r.append(r)
 
-          #####
+          ##### generate the output CSV file
           if args.output_file != None:
             FILE = open(args.output_file, "w")
             FILE.write("freqency;ratio;impedance;watt;drive;a0;a1\n")
@@ -609,7 +615,7 @@ if __name__ == "__main__":
 
           print "First minimum VSWR %0.6f found at freqency %s" % (min_vswr[0], user_friendly_freq(min_vswr[1]))
 
-          #####
+          ##### show the graph
           if args.show_graph == True:
 
             f, axarr = plt.subplots(3, sharex=True)