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Resumen del manual
Blinking BANTAM JACKS MON RS-232 DB-9 CONNECTOR WARRANTY CIRCUIT BOARD 5-POSITION ROTARY SWITCH No synchronization between H2TU-C and H2TU-R on the loop. Poor signal quality on the loop (>10 -7 BER). Marginal signal quality on the loop (. 2 dB margin above 10 -7 BER). Good signal quality on the loop (> 2 dB margin above 10 -7 BER). Network side DSX-1 signal is absent or is in a format that does not match the provisioning of the HDSL2 circuit. Bipolar Violation (BPV), frame bit error (SF mode) or CRC error (ESF mode) detected at DSX-1 signal. Network side DSX signal is present and synchronized. No alarm condition detected. Detected local alarm condition (H2TU-C) or locally and remotely (H2TU-C and H2TU-R). Detected remote alarm condition (H2TU-R). Unit is not in loopback or armed state. Active local bidirectional loopback from the H2TU-C toward the customer and the network. Unit is armed but not in active loopback condition. C A U T I O N C A U T I O NC A U T I O N ! SUBJECT TO ELECTROSTATIC DAMAGE OR DECREASE IN RELIABILITY. HANDLING PRECAUTIONS REQUIRED. ¦ Provides a nonintrusive tap to monitor characteristics of the DSX signal TX — monitors signal being received from the network RX — monitors signal being transmitted to the network EQ ¦ Provides an intrusive signal interrupting access point to the data stream TX — accesses the data stream being transmitted toward the customer RX — accesses the data stream being received from the customer ¦ Used to access the HDSL2 utilities menu tree via VT100 emulation software such as terminal, Hyper Terminal – Private Edition and ProComm Plus. ¦ There are two types of terminal emulation modes, Manual and Real-Time. To toggle between the two, type “CTRL” and “T.” To update the screens while in Manual Mode, press the space bar 3 times. Real-Time Update Mode is the default mode. Provision terminal port as follows: Data Rate — 1.2 kbps to 19.2 kbps Asynchronous Data Format — eight data bits, no parity (none), one stop bit, and no flow control. When using a PC with terminal software, be sure to disable any power saving programs. Warranty for Carrier Networks products manufactured by ADTRAN and supplied under Buyer’s order for use in the U.S. is ten (10) years. For a complete copy of ADTRAN’s U.S. Carrier Networks Equipment Warranty: (877) 457-5007, Document #414. Sets the DSX-1 Line Build Out (LBO). (Default settings are in bold.) 0 — 0-133 feet of LBO 133 — 133-266 feet of LBO 266 — 266-399 feet of LBO 399 — 399-533 feet of LBO 533 — 533-655 feet of LBO CIRCUIT BOARD 6-POSITION DIP SWITCH Provisions the unit. (Default settings are in bold.) SW1-1 Selects line coding to AMI or B8ZS SW1-2 Selects T1-framing to FRAMED or UNFRAMED1 SW1-3 Selects T1-framing to SF or ESF SW1-4 ENABLES or DISABLES the NIU loopback SW1-5 ENABLES or DISABLES the loopback time out2 SW1-6 ENABLES or DISABLES shelf alarm feature. 1UNFRAMED operation ignores the setting of SW1-3 2Default timeout setting is 20 minutes when loopback time out is ENABLED COMPLIANCE CODES This product is intended to be installed in an enclosure with an Installation Code (IC) of “B” or “E” and in Restricted Access Locations only. Up to –200 Vdc may be present on telecommunications wiring. The DSX-1 interface is intended for connection to intra-building wiring only. Code Input Output Installation Code (IC) A – Telecommunication Code (TC) – X Power Code (PC) F C For complete Installation and Maintenance: (877) 457-5007, Document # 700. Please have your fax number available. HDSL2 TROUBLESHOOTING GUIDE Pricing and Availability 800.827.0807 Tech Support 800.726.8663 Return for Repair 256.963.8722 61222004L2-22A HDSL2 TROUBLESHOOTING GUIDE Pricing and Availability 800.827.0807 Tech Support 800.726.8663 Return for Repair 256.963.8722 61222004L2-22A INDICATIONS AND PROBABLE CAUSES Front Panel or Circuit Parameters Indicate Abnormal Operation Connect a terminal or PC to the RS-232 (DB-9) craft interface, located on the faceplate. The terminal must be VT100 or compatible and set for 1.2 to 19.2 kbps, 8 data bits, no parity, 1 stop bit, and no flow control. Select “3” from the ADTRAN HDSL2 Main Menu Screen and “2” from the Span Status Screen: Is signal quality fluctuating (this would occur when real-time mode is active)? Is ATTEN (pulse attenuation) > 30 dB? Are there any errors counting on the ES, SES, or UAS registers? If the above conditions do not exist, the circuit should provide quality service; however, if any of the above conditions exist, cable problem or excessive loss situation is probable and more detailed cable testing should be done to verify all HDSL2 Loop Specifications are met. These conditions may also reflect intermittent cable faults or excessive noise impairments. If intermittent faults or noise impairments are suspected, select “5” from the HDSL2 Main Menu to review the Performance History Screen. Front Panel Indications Under Normal Operation DSL Green DSX Green ...