Index: trunk/Ohana/src/opihi/cmd.data/rd.c
===================================================================
--- trunk/Ohana/src/opihi/cmd.data/rd.c	(revision 18325)
+++ trunk/Ohana/src/opihi/cmd.data/rd.c	(revision 20652)
@@ -4,5 +4,5 @@
 int rd (int argc, char **argv) {
   
-  int i, N, status, plane, Nplane, extend, Nextend, Nskip, JustHead;
+  int i, N, status, plane, Nplane, extend, Nextend, Nskip, JustHead, blank;
   int ccdsel, done, Nword, IsCompressed;
   char region[512], *ccdid, *filename;
@@ -221,10 +221,14 @@
   buf[0].bzero  = buf[0].header.bzero;     /* store the original values */
   buf[0].unsign = buf[0].header.unsign;
+
   gprint (GP_LOG, "read %d bytes from %s into buffer %s\n", 
 	   buf[0].header.size + buf[0].matrix.size, argv[2], argv[1]);
 
+  blank = 0xffff;
+  gfits_scan (&buf[0].header, "BLANK", "%d", 1, &blank);
+
   /** now - convert the matrix values to floats for internal use **/
-  gfits_convert_format (&buf[0].header, &buf[0].matrix, -32, 1.0, 0.0, gfits_get_unsign_mode());
-  
+  gfits_convert_format (&buf[0].header, &buf[0].matrix, -32, 1.0, 0.0, blank, gfits_get_unsign_mode());
+
   return (TRUE);
 }