Index: trunk/psModules/src/objects/pmSourceOutputs.c
===================================================================
--- trunk/psModules/src/objects/pmSourceOutputs.c	(revision 34403)
+++ trunk/psModules/src/objects/pmSourceOutputs.c	(revision 34499)
@@ -233,5 +233,5 @@
 
     float posAngle_x = atan2 (+dTPy_dCHx, +dTPx_dCHx);
-    float posAngle_y = atan2 (-dTPy_dCHy, +dTPx_dCHy);
+    float posAngle_y = atan2 (-dTPx_dCHy, +dTPy_dCHy);
     *posAngle = 0.5*(posAngle_x + posAngle_y);