Product Description LTPH-UM-1234-014 April 30, 2003 HDU-409 Lists 1, 2, and 3The front panel of the HDU-409 contains a tri-color LED. The LED color andactivity provides information on system functionality. Table 4 provides a listof all alarm indications in priority order.Table 1. Front Panel Components and LabelsName FunctionStatus LED Indicates operational status of doubler(see Table 2 on page 5).CLEI/ECI BarCode LabelContains human-readable Common Language EquipmentIdentifier (CLEI) code number and Equipment Catalog Item(ECI) bar code number.ConfigurationnumberFor some products the configuration number may containeither a five- or six-digit warranty configuration number or astand-alone two- or three-digit configuration number asfollows:Digit 1 - Last digit of shipment year.Digits 2 and 3 - Shipment month.Digits 4, 5, and 6 - Configuration number.The configuration number identifies the version of the product.New configuration numbers usually accompany changes inthe last two characters of the CLEI code.The configuration number can also be found on a small barlabel that also contains the Julian date code. The configurationnumber appears as either a stand-alone CFG xx number or asa 15-character number comprised of the part number and a3-character extension. For example, the number150-2404-15-x03 is comprised of the part number and an x03configuration number. This gummed label may be attached tothe PC board or to the front panel.