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PairGain HIGAIN-2 HLU-611, Manual

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PAIRGAIN TECHNOLOGIES 

SECTION 150-611-100

Technical Practice 

Revision 02

Engineering - PLANT Series

September 8, 1995

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MODEL HLU-611 Issue 1

List 1, PairGain #150-1217-01, CLEI Code: T1LIUC04AA

CONTENTS

PAGE

A. PRODUCT OVERVIEW

2

1.

DESCRIPTION AND FEATURES

2

2.

APPLICATIONS

2

3.

SPECIFICATIONS

3

4.

CERTIFICATION

3

5.

WARRANTY

3

6.

TECHNICAL ASSISTANCE

4

B. FUNCTIONAL DESCRIPTION

4

7.

FUNCTIONAL OPERATION

4

8.

OPTIONS

7

9.

LOOPBACKS

9

C. INSTALLATION AND TEST

10

10. INSTALLATION

10

11. TESTING

10

CAUTION

This product incorporates static sensitive

components.  Proper electrostatic discharge

procedures must be followed.

Figure 1.  HLU-611 Front Panel.  The PairGain HLU-611
is the Central Office side of a single pair repeaterless T1
transmission system.

Summary of Contents for HIGAIN-2 HLU-611

Page 1: ...ATURES 2 2 APPLICATIONS 2 3 SPECIFICATIONS 3 4 CERTIFICATION 3 5 WARRANTY 3 6 TECHNICAL ASSISTANCE 4 B FUNCTIONAL DESCRIPTION 4 7 FUNCTIONAL OPERATION 4 8 OPTIONS 7 9 LOOPBACKS 9 C INSTALLATION AND TE...

Page 2: ...ings Circuit ID option 2 APPLICATIONS 2 01 HiGain 2 provides a cost effective easy to deploy method for delivering T1 High Capacity Digital Service HCDS over one metallic pair The fiber like quality s...

Page 3: ...A digital devices pursuant to Part 15 of the FCC rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environmen...

Page 4: ...products product troubleshooting tips and aids accessing helpful utilities and for posting requests or questions This system is available 24 hours a day by calling 714 730 3299 Transmission speeds up...

Page 5: ...onjunction with the FIFO regulates the output bit rate and reconstructs the DS1 clock at the exact rate received from the remote end The HiGain 2 system operates at DS1 rates of 1 544 Mbps with up to...

Page 6: ...t 7 16 A 9 pin RS 232 DB 9 connector see Figure 3 is provided on the front panel This connector provides access to HiGain 2 s maintenance provisioning and performance monitoring interface A very basic...

Page 7: ...esented by depressing the MODE button If neither button is depressed for a period of 30 seconds this manual loopback session terminates and the normal margin displays reappear If this time out occurs...

Page 8: ...is invoked in a HiGain 2 system that has an earlier HRU that does not support the blocking option blocking will only occur at the DS1 output of the HLU The HRU s DS1 output will not be blocked Also a...

Page 9: ...1 repeater loopbacks A3LB and A4LB are patterned after the Wescom addressable T1 repeater loopbacks All four SPLBs have been enhanced to handle the specific requirements of the following HiGain 2 cust...

Page 10: ...as the 3 C757 30G1A SD 3C3710 01 that have not been modified for ASPR Automatic Span Powering Repeater type T1 office repeater applications These older bays connect the 130 V shelf power bus to pin 4...

Page 11: ...leared to zero by selecting the C lear option from the HLU Status Screen shown in Figure 7 Note that since the HLU is considered the master module this clears all performance data screens at both the...

Page 12: ...d loopback codes A5LB Configures the HiGain system to respond to the Teltrend Mod 1 addressable repeater in band loopback codes PWRF DIS Disables powering to the HRU 412 ENA Enables powering to the HR...

Page 13: ...mode disables the auto framing process and forces the HiGain system to function as a transparent bit pipe HAIS 2LP Causes the HiGain system to transmit the AIS signal at both the HLU 611 and HRU 612...

Page 14: ...U display returns to normal 4 Have the C O tester send the HLU 4 in 7 in band loop up for five seconds Observe that the HLU displays the NLOC message indicating an HLU loopback is in effect 5 Repeat s...

Page 15: ...s long as the IOR loopback pattern is being sent This same 20 second repeat scenario also applies to the different bit error signatures generated by the ILR Time Out Override and Query commands Only 2...

Page 16: ...101 D 0101 5 1110 E 1010 A TIME OUT OVERRIDE Loopback Time out Override 1101 D 0101 5 1101 D 0110 6 FAR END NIU ACTIVATE Unblock AIS and pass 2 in 5 1100 C 0101 5 0101 5 0100 4 IOR POWER DOWN HLU Remo...

Page 17: ...s long as the IOR loopback pattern is being sent This same 20 second repeat scenario also applies to the different bit error signatures generated by the ILR Time Out Override and Query commands Only 2...

Page 18: ...101 D 0101 5 1110 E 1010 A TIME OUT OVERRIDE Loopback Time out Override 1101 D 0101 5 1101 D 0110 6 FAR END NIU ACTIVATE Unblock AIS and pass 2 in 5 1100 C 0101 5 0101 5 0100 4 IOR POWER DOWN HLU Remo...

Page 19: ...quired to execute all the HiGain 2 loopbacks shown in Figure 5 Note that all code sequences must be present for at least five seconds LU LOOPUP LD LOOPDOWN NI NETWORK INTERFACE CI CUSTOMER INTERFACE A...

Page 20: ...summarizes the codes required to execute all the HiGain 2 loopbacks shown in Figure 5 Note that all code sequences must be present for at least five seconds LU LOOPUP LD LOOPDOWN NI NETWORK INTERFACE...

Page 21: ...rrors if ILR 2 were sent followed by normal looped data Note that this error pattern will repeat every 20 seconds as long as the IOR loopback pattern is being sent This same 20 second repeat scenario...

Page 22: ...QUERY LPBK Alternate Query loopback 1101 D 0101 5 1110 E 1010 A TIME OUT OVERRIDE Loopback Time out Override 1101 D 0101 5 1101 D 0110 6 IOR POWER DOWN HLU Removes VHDSL line power 0110 6 0111 7 0110...

Page 23: ...g bit error occurred at HLU T1 input LBPV Local Bipolar Violation A bipolar violation has been received at the T1 input to the HLU 611 SIG Signal The HLU and HRU transceivers are trying to establish c...

Page 24: ...efines the type of frame pattern being received from the DSX 1 Displayed during System Settings mode defined above CODE Line Code AMI B8ZS This is the line code that the HLU is set to receive and tran...

Page 25: ...RU towards network initiated by 2 in 5 in band loopback code or out of band ESF data link code See Figure 5 NREM Network Remote Loopback Loopback at HRU remote towards network initiated by addressable...

Page 26: ...Section 150 611 100 Revision 02 Page 26 Figure 6 HLU 611 Main Menu Figure 7 HLU Status Display...

Page 27: ...Section 150 611 100 Revision 02 Page 27 Figure 8 Set Clock Menu Figure 9 System Settings Menu...

Page 28: ...Section 150 611 100 Revision 02 Page 28 FIGURE 10 Performance Data Figure 11 Performance Data History...

Page 29: ...150 611 100 Revision 02 Page 29 Figure 12 HLU Alarm History Copyright 1995 PairGain Technologies Inc PairGain is a registered trademark CopperOptics and HiGain 2 are trademarks of PairGain Technologi...

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