Black-box 5000 Manual do Utilizador descarregar pdf (Página 246)

Multiserver 5000

244

LL RT SI RD TD

Figure E-5. CSU/DSU Module Indicator Positions.

LED Indicator

Indicator Definition Off Flashing On

LL Local Loopback Normal operation Local Loopback Test ---

is active

RT Remote Terminal Normal operation Digital Loopback or Remote ---

Terminal Loopback Test is

active

SI Status Indicator Power is off or CSU/DSU is receiving Power is on and

module is defective out-of-service signals from CSU/DSU is

code, or out-of-frame DDS synchronized with

code, or no DDS signal the network

is being passed

RD Received Data No data is being CSU/DSU module is CSU/DSU module

received by the receiving error during is receiving data

CSU/DSU module Test Pattern Test

TD Transmitted Data Not data is being Data is being Data is being

Table E-5. CSU/DSU Module Indicators

1 2 ... 241 242 243 244 245 246 247 248 249 250 251 ... 267 268

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Black-box 5000 Manual do Utilizador Página 246