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Anleitung Zusammenfassung
LP1 / LP2 OFF RED YELLOW GREEN . FLASHING DSX OFF . FLASHING GREEN ALM OFF RED YELLOW LBK OFF . FLASHING YELLOW STATUS LEDs FACEPLATE SWITCH - SW1 FACEPLATE SWITCH - SW3 Loopback Timeout Enabled ¦ Loopback timeout is enabled Disabled ¦ Loopback timeout is disabled Manual Line Code Select AMI ¦ AMI line code is selected B8ZS ¦ B8ZS line code is selected Latching Loopback T1 ¦ Allows only standard T1 testing FT1 ¦ Allows for fractional T1 testing External Alarm Enabled ¦ External alarm is enabled Disabled ¦ External alarm is disabled No synchronization between the HTU-C and the next HDSL unit (HRE or HTU-R) on loop1 / loop2 Poor signal quality on loop1 / loop2 Marginal signal quality loop on loop1 / loop2 Good signal quality on loop1 / loop2 Error detected at HTU-C or HTU-R DSX-1 signal not detected CIRCUIT BOARD ROTARY SWITCH - SW2 Selects the DSX-1 Line Build Out ¦ 0..........0 - sets LBO to 0-133 feet ¦ 1..........133 - sets LBO to 133-266 feet 2..........266 - sets LBO to 266-399 feet 3..........399 - sets LBO to 399-533 feet ¦ 4..........533 - sets LBO to 533-655 feet Note: Positions 5,6 & 7 are not used. BPV, Frame Error (SF), CRC Error (ESF) is detected CIRCUIT BOARD JUMPER - P1 DSX-1 signal is present and synchronized No alarm condition detected Local alarm condition detected (HTU-C), or local and remote alarm condition detected (HTU-C and HTU-R) Remote alarm condition detected (HTU-R) No active loopback Armed but not in loopback Local loopback is active CIRCUIT BOARD JUMPER - P3 Selects response of HTU-R upon Customer Loss of Signal AIS ¦ HTU-R generates unframed all 1s toward network upon loss of customer signal LBK ¦ HTU-R generates loopback towards network upon loss of customer signal CDI DSX EQ BANTAM JACKS HTU-R generates framed all 1s toward network upon loss of customer signal COMPLIANCE CODES This product complies with UL 1459, third edition. It is intended to be installed in an enclosure with an Installation Code (IC) of “B” or “E” and in Restricted Access Locations only. Input current at maximum load is 1 A, and maximum output at overcurrent condition is 160 mA at -188 Vdc. Code Input Output Installation Code (IC) A – Telecommunication Code (TC) – X Power Code (PC) F C Selects the span powering voltage LV (–140 Vdc) ¦ Used to span power circuit with 0 or 1 HRE HV (–190 Vdc) ¦ Used to span power circuit with multiple HREs Selects the framing of the HDSL circuit UNF ¦ HTU-C operates in unframed mode AUTO ¦ HTU-C auto detects framing Provides an intrusive test access point to the data stream TX ¦ Accesses the data stream being received from the local loop RX ¦ Accesses the data stream being transmitted to the local loop RS-232 DB-9 CONNECTOR ¦ Used to access performance monitoring data, perform loopbacks and provision units via VT100 emulation software such as Hyper Terminal – Private Edition and ProComm Plus. ¦ Provision terminal port as follows: Data Rate — 19.2 kbps Asynchronous Data Format — eight data bits, no parity (none), one stop bit ¦ When using a PC with terminal software, be sure to disable any power saving programs. WARRANTY 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. For complete Installation and Maintenance: (877) 457-5007, Document #300. Please have your fax number available. TURN-UP & TROUBLESHOOTING GUIDE Pricing and Availability 800.827.0807 Tech Support 800.726.8663 Return for Repair 256.963.8722 61245004L6-22B TURN-UP & TROUBLESHOOTING GUIDE Pricing and Availability 800.827.0807 Tech Support 800.726.8663 Return for Repair 256.963.8722 61245004L6-22B INSERTION LOSS MEASUREMENTS HTU-C VMDF HRE 1 HRE2 HTU-R 10000 15.00 50000 25.50 100000 30.00 150000 32.75 196000 35.00 200000 35.25 Frequency Maximum (kHz) Loss Data (dB) NOTE: If your TIMs is unable to transmit 200 kHz tone, set the TIMs to one of the frequencies shown above and compare the received signal to the maximum loss at that frequency. Turn-up Guide 1. Set option switches according to circuit design and local practice. 2. Install HTU-C and HTU-R. 3. See reverse side of this job aid to ensure all LEDs are correct and synchronization has occurred. a) HTU-C will have red ALM LED if not connected to network. LP1 and LP2 should be solid green. b) HTU-R will have red ALM LED if no customer connected. LP1, LP2, line coding and framing (if not UNFR) LEDs should be illuminated. 4. If all LEDs are correct: a) Verify that the signal quality is the same on each loop. Ensure signal quality indicators do not fluctuate. b) Verify that the loop loss is within design limits. If there is a difference of more than 1 dB between the two loops, a problem exists with the cable pairs. c) If errors occur, use the Current System Status and Performance History screens to determine where they are occurring. See...