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3Section 61182007L1-5, Issue 161182007L1-5A
3. OPERATION
Powering Options
The unit features automatic sensing based on the
current load detected on the HDSL circuit. Span
powering at less than -120 Vdc allows for span
powering of circuits without REGs or with one REG.
LTU Alarm Outputs
Pin B10 of the LTU edge connector interface provides
a fuse alarm signal that connects -48 Vdc to this pin in
the presence of a blown fuse. This indicates the card
has malfunctioned and should be replaced.
Front Panel Operation Using the Total Access
3010 SCU (P/N 1181017L1)
The front panel interface consists of a 4-character
alphanumeric LED display and a 3-position switch
that controls the display.
The switch positions are:
Center OFF
Up MODE
Down SELECT
The switch is spring-loaded to the center (OFF)
position. The display is used to report the loop
margins (dB), and other operational conditions.
Faceplate Indicators
The Total Access 3010 LTU has seven faceplate
LEDs, illustrated in Table 1, which indicate
operational status.
The Total Access 3010 LTU plugs directly into the
Total Access 3010 shelf. No installation wiring is
required.
Table 1. Faceplate LED Indicators
DELnoitacidnInoitpircseD
RWPffO
neerG
wolleY
neerGgnihsalF
wolleYgnihsalF
dracotrewopoN
ecivreS-nI,tneserprewoP
dengissanuroecnanetniaM,ecivreS-fo-tuO,tneserprewoP
DCFUCSybdesseccagniebdraC,ecivreS-nI
DCFUCSybdesseccagniebdraC,ecivreS-fo-tuO
307GffO
neerGgnihsalF
fogninoisivorpehthctamtonseodtahttamrofafosirotnesbasilangis1Eedis-krowteN
tiucricLSDHeht
langis1EdeviecernodetcetedrorreCRCrororretibemarF
TSTffO
wolleY
etatsdemrarokcabpoolnitonsitinU
evitcasikcabpool)UTL(lacoL
1PLffO
deR
wolleY
neerG
gnihsalF
1pooLnoUTNdnaUTLehtneewtebnoitazinorhcnysoN
(1pooLnoytilauqlangisrooP ≤ )REB7-01
(1pooLnoytilauqlangislanigraM ≤ )REB7-01evobanigramBd2
)REB7-01evobanigramBd2>(1pooLnoytilauqlangisdooG
ylfeirbknilbotDELsihtesuaclliw1pooLfodnerehtienodetcetedrorrenA
2PLffO
deR
wolleY
neerG
gnihsalF
2pooLnoUTNdnaUTLehtneewtebnoitazinorhcnysoN
(2pooLnoytilauqlangisrooP ≤ )REB7-01
(2pooLnoytilauqlangislanigraM ≤ )REB7-01evobanigramBd2
)REB7-01evobanigramBd2>(2pooLnoytilauqlangisdooG
ylfeirbknilbotDELsihtesuaclliw2pooLfodnerehtienodetcetedrorrenA
MLAffO
deR
detcetedsnoitidnocmralaoN
)UTNdnaUTL(yletomerdnayllacolro,)UTL(yllacolrehtiedetcetednoitidnocmralA
TCAneerG
wolleY
noitarepolamroN
noitarepolaunaM