diff --git a/tth.py b/tth.py
index c16bcd4..8a439e3 100644
--- a/tth.py
+++ b/tth.py
@@ -78,7 +78,7 @@ class Coupled_tth_RIXSside(Adjustable):
          return any([self.SRY.is_moving(),self.DRY.is_moving()])
 
 
-class Coupled_tth_outer(Adjustable):
+class Coupled_tth_outer_RixsSide(Adjustable):
      
     
     def __init__(self, ID="tth", units="deg", delta=0, name="" ):
@@ -88,15 +88,15 @@ class Coupled_tth_outer(Adjustable):
          self.delta = delta
 
     def set_target_value(self, value):
-         s_SRY = value-90+self.delta  
-         s_2TRY = 215.435 -2*value
+         s_SRY =-(90-value)+self.delta  
+         s_2TRY = 124.4 -2*value
 
          t_SRY = self.SRY.set_target_value(s_SRY)
          t_2TRY = self.twoTRY.set_target_value(s_2TRY)
          t_SRY.wait()
          t_2TRY.wait()
     def get_current_value(self):
-         return (215.435-self.twoTRY.get_current_value())*0.5
+         return (124.4-self.twoTRY.get_current_value())*0.5
     def is_moving(self):
          return any([self.SRY.is_moving(),self.twoTRY.is_moving()])