valutazioni - 5, GPA: 4.8
(
)
)
|
Facilità d'uso
WARNING Warnings inform the user of potential bodily pain, injury, or death. Training This page is intentionally blank. 1.GENERAL Figure 1. HDSL4 239 T1 HDSL4 Repeater (H4R) 2.DESCRIPTION .TC PAM line coding .Lightning protection .In-band loopback control .Standard 239 form factor repeater apparatus case design .Remote provisioning and pass-through performance monitoring .Bad Splice Detection .Fast Retrain NOTE The Splice Detection Feature is included with this product as an aid to troubleshooting. Due to inconsistency in environmental conditions and their effect on telecommunications plant, ADTRAN cannot guarantee the accuracy of the measurements. Comparison to existing engineering drawings should provide exact locations of suspect splices indicated by ADTRAN algorithms. .NTF - Reported if the unit is active and no problems have been detected or the number of anomalies detected have not yet reached the detection count threshold, which facilitates the reporting of the result to this screen. (Eight is the present threshold.) .LOS - Reported if the remote unit has not been detected. .Number - Reported if an anomaly has been detected a number of times that exceeds the detection count threshold of eight. The number shown in this column represents the number of feet from the transceiver (Reference Point) to that anomaly. This number will also reflect the highest anomaly count seen, as it is possible to have more than one bad splice per circuit. This screen will report the worst (most frequently detected) anomaly. Figure 2. Splice Results Screen NOTE Fast-Retrain capable units must be installed on both ends of the HDSL4 circuit for this feature to function properly. Also, if there is a failure of a fast retrain attempt, for any reason, then the traditional (25-30 second) retrain will be initiated. Part Number Unit Name 118141xLy Total Access 3000 H4TU-C 122x401Ly 220 H4TU-C 122x403Ly DDM+ H4TU-C 122x404Ly 3192 H4TU-C 122x407Ly Soneplex H4TU-C 122x424Ly T200 H4TU-R, Local Power 122x426Ly T200 H4TU-R, Span Power x = any generic number; y = any list number .On single H4R loops, only on the attenuation properties of the loop segment must be considered. .For a circuit requiring two H4Rs, both segment attenuation as well as segment DC resistance requirements be satisfied. .For a circuit requiring three H4Rs, H4TU-C and H4TU-R hardware requirements, segment attenuation, and segment DC resistance requirements must all be satisfied. Code Input Output Power Code (PC) C C Telecommunication Code (TC) X Installation Code (IC) A . 2.This device must accept any interference received, including interference that may cause undesired operation. 3.INSTALLATION C A U T I O N ! SUBJECT TO ELECTROSTATIC DAMAGEOR DECREASE IN RELIABILITY. HANDLING PRECAUTIONS REQUIRED. .239 T1 HDSL4 Repeater (H4R) .239 T1 HDSL4 Repeater (H4R) Job Aid CAUTION Electronic modules can be damaged by ESD. When handling modules, wear an antistatic discharge wrist strap to prevent damage to electronic components. Place modules in antistatic packing material when transporting or storing. When working on modules, always place them on an approved antistatic mat that is electrically grounded. 4.CONNECTIONS CAUTION The H4R dissipates a maximum of 5.4 watts. NOTE Ensure that the chassis ground is securely connected to the apparatus case. Ground pin designations are defined in Table 3. Pin Designation Description 1 GND Ground 2 NC No Connect 3 T1 Customer Loop 1 Tip 4 R1 Customer Loop 1 Ring 5 T1 Network Loop 1 Tip 6 R1 Network Loop 1 Ring 7 NC No Connect 8 T Network Loop 2 Tip 9 R Network Loop 2 Ring 10 GND Ground 11 T Customer Loop 2 Tip 12 R Customer Loop 2 Ring 5.HDSL4 DEPLOYMENT GUIDELINES NOTE The H4TU-C with part numbers 1221401L6, 1221403L6, and 1221404L6 support only one H4R in the HDSL4 circuit. 6. H4R CAPACITY GUIDELINES Part Number Description CLEI Code Slots Stub H4R Capacity Recommended Slot Assignments Material Above Ground Below Ground Above Ground Below Ground 1150027L1 239/439 Housing DDMOABA1MA 4 Air 4 4 All All Stainless/Polymer 1150027L2 239/439 Housing DDMOBBA1MA 4 Gel 4 4 All All Stainless/Polymer 1150057L1 Universal Housing DDMODA01RA 4 Air 4 4 All All Stainless Steel 1150057L1 Universal Housing DDMODA01RA 4 Gel 4 4 All All Stainless Steel 1150058L1 Universal Housing DDMOEE01RA 8 Air 8 8 All All Stainless Steel 1150058L2 Universal Housing DDMOFE01RA 8 Gel 8 8 All All Stainless Steel Manufacturer Description Manufacturer . s Part Number Slots H4R Capacity Recommended Slot Assignments Material Above Ground Below Ground Above Ground Below Ground ADC Radiator II SPX-HRXC-30-AG-016GT 16 16 16 All All Stainless Steel ADC Radiator SPX- HRXC- 30- B1 8 8 8 All All Stainless Steel Circa Telecom HDSL-12A 760005 12 12 12 All All Stainless Steel Circa Telecom HDSL-12B 760006 12 12 12 All All Stainless Steel Arris/Lucent/AT& T Keptel ® Inter Link . 809 RF809A3-XXX or RF809B3-XXX 12 8 N/A 1, 3, 4, 67, 9, 10, 12 N/A Polymer Arris/Lucent/AT& T Keptel ® Inter Li...