minor change

ADoutputs.py

@@ -27,11 +27,11 @@ ul.ignore_instacal() #instacal will be ignored
 
 # First of all, I check which daqs are available and print it. 
 devices = ul.get_daq_device_inventory(interface_type=InterfaceType.USB)
-device = devices[0]
-if len(devices)>0:
+if len(devices) == 1 :
+    device = devices[0]
     print('daq %s is connected' % device.product_name)
 else:
-    print('No daq connected')
+       warnings.warn('No daq connected')