diff --git a/dump.py b/dump.py
index 7374303..0578dd1 100755
--- a/dump.py
+++ b/dump.py
@@ -50,7 +50,8 @@ LINES = [
   ('Factory dark', ilt.GetFactoryDarkVoltages, 'V'),
   ('User dark', ilt.GetUserDarkVoltages, 'V'),
   ('Ambient', ilt.GetAmbientCurrent, 'A'),
-  ('Sample time', ilt.GetSampleTime, 's'),
+  ('Sample time', ilt.GetSampleSeconds, 's'),
+  ('Detector bias', ilt.GetBiasVoltage, 'V'),
 ]
 
 
diff --git a/ilt1000.py b/ilt1000.py
index bcdf645..d984262 100755
--- a/ilt1000.py
+++ b/ilt1000.py
@@ -52,8 +52,6 @@ class CommandError(Error):
 # setsampletime
 # setsampletimetemp
 
-# getbias
-
 # getecal
 # getecaldate
 # setecal
@@ -345,10 +343,13 @@ class ILT1000(object):
   def GetAmbientCurrent(self):
     return float(self._SendCommand('getambientlevel'))
 
-  def GetSampleTime(self):
+  def GetSampleSeconds(self):
     ret = self._SendCommand('getsampletime')
     return float(ret) / 1000
 
+  def GetBiasVoltage(self):
+    return float(self._SendCommand('getbias'))
+
 
 class _Row(object):