crg_read_tuner (ul_crg)

	status.i4.v = crg_read_tuner(device_data.s.r)

	This routine reads the CRG Adjust Circuits data and places the data in
	the user preallocated structure "device_data".

	device_data	returned CRG adjust cicuits data
			(structure of type CRG_TUNER)
			The user should allocate memory before calling
			this routine.

	This function returns ACNET status values as follows:

	DBM_OK			success
	DBM_xxx			error in reading database
	CBS_INVARG		null structure pointer passed

	This function requires the following include files:

	ul_crg_h:crg_h, acnet_errors_h

	Related functions:

	cnv_time_energy, crg_param_read, crg_tecar_read, crg_read_b2min_slope,
	crg_active_file, crg_tecar_c_to_ftn