1 files changed, 11 insertions, 7 deletions
diff --git a/lab_control/oscilloscope.py b/lab_control/oscilloscope.py
index 9f2d02c..e4b5a89 100644
--- a/lab_control/oscilloscope.py
+++ b/lab_control/oscilloscope.py
@@ -1,17 +1,21 @@
+""" Interface definition for oscilloscope devices. """
+
 class Oscilloscope:
+    """
+    This interface specifies the common API for all
+    supported oscilloscope devices.
+    """
     def __init__(self):
-        raise Exception("This class should not be instantiated directly, please extend it instead")
+        pass
 
     def measureAmplitude(self, channel: int) -> float:
-        pass
+        """ Return amplitude measurement on specific channel. """
 
     def measurePeakToPeak(self, channel: int) -> float:
-        pass
+        """ Return peak-to-peak measurement on specific channel. """
 
     def measureRMS(self, channel: int) -> float:
-        pass
+        """ Return RMS measurement on specific channel. """
 
     def measureFrequency(self, channel: int) -> float:
-        pass
-
-
+        """ Return frequency measurement on specific channel. """