1 files changed, 8 insertions, 2 deletions
diff --git a/ue9qol.py b/ue9qol.py
index 6436552..e95fe6b 100644
--- a/ue9qol.py
+++ b/ue9qol.py
@@ -21,8 +21,14 @@ class UE9qol:
         # fixing missing slope for gain '0'
         c['AINSlopes']['0']= 0.0000775030
 
-    def getInputCh(self, chNum):
-        return self.daq.getAIN(chNum)
+    def getInputCh(self, chNum, BipGain = 8):
+        # BipGain = 8 -> bipolar range (-5V, +5V) gain 1
+        # UE9 default BipGain = 0 -> signal range (0V, +5V) gain 1
+        # other BipGain could be:
+        #   0 = Unipolar Gain 1, 1 = Unipolar Gain 2,
+        #   2 = Unipolar Gain 4, 3 = Unipolar Gain 8,
+        #   8 = Bipolar Gain 1
+        return self.daq.getAIN(chNum, BipGain = BipGain)
 
     def setOutputCh(self, chNum=None, volts=None):
         if chNum == None or volts == None: