ADTRAN 3060 specifications Operation, Powering Options, LTU Alarm Outputs, Faceplate Indicators

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
LED	Indication	Description
PWR	Off	No power to card
	Green	Power present, In-Service
	Yellow	Power present, Out-of-Service, Maintenance or unassigned
	Flashing Green	In-Service, Card being accessed by SCU FCD
	Flashing Yellow	Out-of-Service, Card being accessed by SCU FCD
G703	Off	Network-side E1 signal is absent or is of a format that does not match the provisioning of
		the HDSL circuit
	Flashing Green	Frame bit error or CRC error detected on received E1 signal
TST	Off	Unit is not in loopback or armed state
	Yellow	Local (LTU) loopback is active
LP1	Off	No synchronization between the LTU and NTU on Loop 1
	Red	Poor signal quality on Loop 1 (≤ 10-7 BER)
	Yellow	Marginal signal quality on Loop 1 (≤ 2 dB margin above 10-7 BER)
	Green	Good signal quality on Loop 1 (> 2 dB margin above 10-7 BER)
	Flashing	An error detected on either end of Loop 1 will cause this LED to blink briefly
LP2	Off	No synchronization between the LTU and NTU on Loop 2
	Red	Poor signal quality on Loop 2 (≤ 10-7 BER)
	Yellow	Marginal signal quality on Loop 2 (≤ 2 dB margin above 10-7 BER)
	Green	Good signal quality on Loop 2 (> 2 dB margin above 10-7 BER)
	Flashing	An error detected on either end of Loop 2 will cause this LED to blink briefly
ALM	Off	No alarm conditions detected
	Red	Alarm condition detected either locally (LTU), or locally and remotely (LTU and NTU)
ACT	Green	Normal operation
	Yellow	Manual operation

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