diff --git a/OOequipment/subfiles/Channel.m b/OOequipment/subfiles/Channel.m
index 9cd7a32..092e5ab 100644
--- a/OOequipment/subfiles/Channel.m
+++ b/OOequipment/subfiles/Channel.m
@@ -121,7 +121,7 @@ classdef Channel
         end
         
         function ch = set.probe(ch,man)
-            ch.scope.write(['PROB',num2str(ch.channelnumber),':SET:ATT:MAN ', man]);
+            ch.scope.write(['PROB',num2str(ch.channelnumber),':SET:ATT:MAN ', double2str(man)]);
         end
         
         function data = waveform(ch,window)
@@ -162,9 +162,5 @@ classdef Channel
         function c = MEAS(ch,string)
             c = ch.scope.query(['MEAS',num2str(ch.channelnumber),':RES:ACT?',string]);
         end
-        
-%         function c = CHANsend(ch,string,in)
-%             c = ['CHAN',num2str(ch.channelnumber),':',string,' ',in];
-%         end
     end
 end
\ No newline at end of file
diff --git a/OOequipment/subfiles/transferFunction.m b/OOequipment/subfiles/transferFunction.m
index e93d6ba..8964acb 100644
--- a/OOequipment/subfiles/transferFunction.m
+++ b/OOequipment/subfiles/transferFunction.m
@@ -13,6 +13,8 @@ function data = transferFunction(oscilloscope,functiongenerator,f_start,f_stop,a
     functiongenerator.waveform = 'SINUSOID';
     oscilloscope.enable_channels;
     oscilloscope.trigger.source = 'CH1';
+    oscilloscope.ch1.probe = 1;
+    oscilloscope.ch2.probe = 1;
     emptydata = zeros(n_measurements,n_steps);
     data = struct('magnitude',emptydata,'phase',emptydata,'frequency',f_array,'measurements',n_measurements,'steps',n_steps);
     for j = 1:n_measurements