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LTPH-UM-1234-01 Product Description
HDU-409 Lists 1, 2, and 3 April 30, 2003 3
PRODUCT DESCRIPTION
The open-framed cover reduces thermal stress and improves reliability,
allowing air to freely circulate over all components. The open cover also
permits the doubler to be easily distinguished from the 239 T1 repeater.
Figure 1 on page 3 shows the front panel of the HDU-409 and
Table 1 on page 4 describes the doubler unit components and labels.
Figure 1. HDU-409 Front Panel
CLEI/ECI bar
code label
Configuration
number label
(located on top)
Status LED
HDU-409
L
STATUS
List number
Extraction
handle
HiGain
DOUBLER
H0078-A