+/* Information about the rear card option currently installed. */
+enum card_type {
+ CARD_UNKNOWN,
+ REAR_TERMINALS,
+ HP_44491A,
+ HP_44492A,
+};
+
+struct rear_card_info {
+ unsigned int card_id;
+ enum card_type type;
+ const char *name;
+ const char *cg_name;
+};
+
+/* Possible states in an acquisition. */
+enum acquisition_state {
+ ACQ_TRIGGERED_MEASUREMENT,
+ ACQ_REQUESTED_HIRES,
+ ACQ_REQUESTED_RANGE,
+ ACQ_GOT_MEASUREMENT,
+};
+