Installation - ADTRAN HTU-C NB Installation And Maintenance Practice

HTU-C using Narrowband/Wideband for Litespan Installation and Maintenance Practice

INSTALLATION

Electrostatic Discharge (ESD) can damage electronic modules.
When handling modules, wear an antistatic discharge wrist strap
to prevent damage to electronic components. Place modules in
antistatic packing material when transporting or storing. When
working on modules, always place them on an approved antistatic
mat that is electrically grounded.
After unpacking the HTU-C NB/WB for Litespan, inspect it for damage. If damage has
occurred, file a claim with the carrier, then contact ADTRAN Customer Service. If possible,
keep the original shipping container for returning the unit for repair or for verification of
shipping damage. Refer to
The HTU-C NB/WB for Litespan plugs directly into a Litespan channel bank assembly
channel unit slot. Litespan system software must be 7.1.3 or higher. See
edge connections.
Upon insertion of an HTU-C NB/WB for Litespan, the
The LED remains on until the Litespan bank recognizes the insertion of the card and
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downloads the AHT1U channel unit type code into the line card. Typically, the
remains on for approximately 15 to 20 seconds (time may vary). Approximately 3 to 4 seconds
after the LED turns off, the
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for Litespan and HTU-R units synchronize with each other over both HDSL loops.
Prior to installing or removing the HTU-C NB/WB for Litespan,
make sure to observe the following: If the HTU-C NB/WB for
Litespan is removed from a line card slot, wait at least 15 seconds
before reinsertion If connected to the MTI craft interface terminal,
wait until the message "AID:MJ,UEQ.." appears (where "AID" is the
access identifier). This informs the Litespan common control
assembly that the HTU-C NB/WB for Litespan has been removed
from its slot, after which the common control assembly begins
looking for the reinsertion of the line card. Reinsertion any earlier
than this may temporarily lock the HTU-C into a nonfunctional
state because the common control assembly will not send the
AHT1U equipment type code to the HTU-C NB/WB for Litespan.
8
CAUTION
C A U T I O N !
SUBJECT TO ELECTROSTATIC DAMAGE
OR DECREASE IN RELIABILITY.
HANDLING PRECAUTIONS REQUIRED.
"Appendix A, Warranty"
LED turns red and remains so until the HTU-C NB/WB
HDSL
CAUTION
for further information.
LED should turn on immediately.
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Figure 4 for card
LED
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61247002L1-5A