diff --git a/site_ansto/instrument/hrpd/echidna_configuration.tcl b/site_ansto/instrument/hrpd/echidna_configuration.tcl
index c511d0e4..f6fa4df4 100644
--- a/site_ansto/instrument/hrpd/echidna_configuration.tcl
+++ b/site_ansto/instrument/hrpd/echidna_configuration.tcl
@@ -1,5 +1,5 @@
-# $Revision: 1.15 $
-# $Date: 2007-02-20 04:59:49 $
+# $Revision: 1.16 $
+# $Date: 2007-02-22 05:10:20 $
 # Author: Ferdi Franceschini (ffr@ansto.gov.au)
 # Last revision by: $Author: ffr $
 
@@ -31,3 +31,20 @@ fileeval $cfPath(nexus)/nxscripts.tcl
 fileeval $cfPath(scan)/scan.tcl
 MakeStateMon hmscan
 fileeval extraconfig.tcl
+
+VarMake detector_radius_mm Int User
+detector_radius_mm 1250
+VarMake detector_angle_deg Float User
+detector_angle_deg 158.75
+VarMake deg_per_rad Float Internal
+deg_per_rad 57.29577951308232
+deg_per_rad lock
+VarMake detector_angle_rad Float User
+detector_angle_rad [expr [SplitReply [detector_angle_deg]]/[SplitReply [deg_per_rad]] ]
+VarMake detector_active_height_mm Float User
+detector_active_height_mm 335
+
+VarMake detector_zero_xpixel Float User
+detector_zero_xpixel 127
+VarMake detector_zero_ypixel Float User
+detector_zero_ypixel 255.5