bugfix

ext/bscacquisition.py

@@ -12,7 +12,7 @@ class BSCAcquisition(Acquisition):
         self.bscache = bscache
         self.use_channels = use_channels
         self.grp = 0
-        super().__init__(*args, default_channels=bscache.channels.keys(), **kwargs)
+        super().__init__(*args, default_channels= self.use_channels or self.bscache.channels.keys(), **kwargs)
 
     def setGroup(self,idx):
         self.grp = idx
@@ -39,4 +39,3 @@ class BSCAcquisition(Acquisition):
                     hid.create_dataset(dname, data=singledata)
                     dpid = dname.replace('/data','/pid')
                     hid[dpid] = hid[pidname]
-