diff --git a/raptor_eagle_ccd.h b/raptor_eagle_ccd.h
index f88215b..241c17d 100644
--- a/raptor_eagle_ccd.h
+++ b/raptor_eagle_ccd.h
@@ -30,7 +30,7 @@ public:
     /*  class constants  */
 
     // separator char sequence of serialized representation of user FITS keywords array
-    static constexpr std::string_view USER_FITS_KEY_SEP_SEQ{"\v"};
+    static constexpr std::string_view USER_FITS_KEY_SEP_SEQ{"\t"};
 
     static constexpr size_t DEFAULT_ACQ_RING_BUFFER_SIZE = 3;
 
@@ -104,9 +104,11 @@ public:
     static constexpr std::string_view CAMERA_ATTR_CURR_KEYW{"CURR_FITS_KEY"};
 
     static constexpr std::string_view CAMERA_CMD_INITCAM{"INITCAM"};
-    static constexpr std::string_view CAMERA_CMD_START_EXP{"START_EXP"};
-    static constexpr std::string_view CAMERA_CMD_STOP_EXP{"STOP_EXP"};
+    static constexpr std::string_view CAMERA_CMD_START_EXP{"STARTEXP"};
+    static constexpr std::string_view CAMERA_CMD_STOP_EXP{"STOPEXP"};
+    static constexpr std::string_view CAMERA_CMD_ABORT_EXP{"ABORTEXP"};
     static constexpr std::string_view CAMERA_CMD_CLEAR_PERM_KEYW{"CLEAR_PERM_FITS_KEYW"};
+    static constexpr std::string_view CAMERA_CMD_CLEAR_CURR_KEYW{"CLEAR_CURR_FITS_KEYW"};
     static constexpr std::string_view CAMERA_CMD_START_RESET_MICRO{"RESET_MICRO"};
     static constexpr std::string_view CAMERA_CMD_START_RESET_FPGA{"RESET_FPGA"};