ADTRAN FT1 specifications Table A. LED Indications, Description and Indications

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The ADTRAN Single-Wide FT1 Repeater provides three faceplate LEDs which indicate signal quality, error conditions, and loopback status. See Table A for a description of the LED indicators.

Operating power is derived from an ADTRAN FT1 DP, independent of line impedance or wire gauge. The repeater uses some current, then passes the span power on to the FNID.

The Single-Wide FT1 Repeater operates at line losses up to 35.25 dB at 200Ê kHz, in both directions from the repeater and regenerates the 2B1Q signals to meet the transmitted power spectrum of Bellcore TA-NWT-0001210. For deployment guidelines, refer to subsection 5 of this practice.

The Single-Wide FT1 Repeater is housed in an environmental apparatus case.

NOTE

Do not remove the metal shell enclosing the circuit packs.

1245211L1 FT1 RPTR

NET

CUST

LBK

 

Table A. LED Indications

 

 

LED

Description and Indications

NET

This LED indicates the FT1 signal quality and errors on the Network-side loop. The NET LED will

 

flash once when an errored second is detected on NET side loop. If the NET LED flashes yellow

 

rapidly (six times per second), sealing current is present and the FT1 Repeater is attempting to

 

synchronize with the other FT1 circuit elements.

 

Off ........ No synchronization with the FT1 DP.

 

Green .... Synchronized with good signal quality on NET loop (> 2dB margin above 10Ð7 BER)

 

Yellow .. Synchronized with marginal signal quality on NET loop (< 2 dB margin above 10Ð7 BER)

 

Red ........ Synchronized with poor signal quality on NET loop (>10Ð7 BER)

CUST

This LED indicates the FT1 signal quality and errors on the Customer-side loop. The CUST LED

 

will flash once when an errored second is detected on CUST side loop.

 

Off ........ No synchronization with the FNID.

 

Green .... Synchronized with good signal quality on CUST loop (> 2dB margin above 10Ð7 BER)

 

Yellow .. Synchronized with marginal signal quality on CUST loop (< 2 dB margin above 10Ð7 BER)

 

Red ........ Synchronized with poor signal quality on CUST loop (>10Ð7 BER)

LBK

This LED indicates the status of a loopback detected at the FT1 Repeater.

 

Off ........ No loopback detected at the FT1 Repeater.

 

Yellow .. Loopback detected toward NET.

 

 

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Section 61245211L1-5, Issue 1

61245211L1-5A

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Contents L1-5 Issue 1, DecemberGeneral Clei Code # T1R6GMJDAATable A. LED Indications Description and IndicationsTable B. FT1 Repeater Apparatus Cases InstallationRevision History PartTesting the FT1 Repeater at the CO MaintenanceReplacement of Circuit Packs FT1 Repeater LoopbacksFrequency Maximum Loss CSA Deployment GuidelinesTable C. Loop Insertion Loss Data Adtran Customer Service SpecificationsWarranty and Customer Service Table D. Hdsl FT1 Repeater Unit SpecificationsFT1 Loopbacks Figure A-1. FT1 LoopbacksFigure A-4. FT1 Repeater Network Loopback Loopback Select FT1 Device Code Name Code Byte Loopback Activation and DeactivationTable A-1. FT1 Loopback Select Codes LOOP-UP State