Naming conventions:
Product_type_h/wRevision_s/wRevision_ValidArea_language_datecode.extension
Product_Howto_language_ Theme-with-description.extension 


DES-1526_ds_en_050217.pdf	Data sheet.
				Datenblatt.

DES-1526_man_en_050802.pdf	Manual.
DES-1526_qig_en_050802.pdf	Quick Installatin Guide.