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PAIRGAIN TECHNOLOGIES

SECTION 150-619-100

Technical Practice

Revision 01

Engineering - PLANT Series

August 5, 1996

Page 1

2008.DOC

AIR

AIN

ECHNOLOGIES

AIN

-2

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INE

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MODEL HLU-619

IST

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UMBER

CLEI C

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#150-1276-01

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CONTENTS

PAGE

1. DESCRIPTION AND FEATURES.......................2

2. APPLICATIONS.................................................3

3. SPECIFICATIONS .............................................3

4. ABOUT THE HLU-619 .......................................4

4.1 DSX-1 INTERFACE DRIVER ........................4

4.2 POWER CONSIDERATIONS........................5

4.3 USING THE RS-232 CONNECTION .............6

5. USING ALARMS ................................................6

6. INSTALLATION .................................................8

7. TESTING............................................................8

8. SETTING THE SYSTEM OPTIONS .................10

8.1 USING THE FRONT PANEL ......................10

8.2 USING AN RS-232 TERMINAL...................11

9. LOOPBACK OPERATION ...............................12

10. HLU-619 GNLB TEST PROCEDURE.............20

11. HLU-619 A1LB TEST PROCEDURE..............20

12. HLU-619 A2LB TEST PROCEDURE..............22

13. HLU-619 A3LB TEST PROCEDURES ...........24

14. HLU-619 A4LB TEST PROCEDURES ...........25

15. HLU-619 A5LB TEST PROCEDURES ...........26

16. CERTIFICATION ............................................28

17. WARRANTY...................................................28

18. FINDING TECHNICAL HELP .........................28

19. GLOSSARY ...................................................29

20. USING THE SOFTWARE...............................30
Revision History of this practice.
Revision 01 — August 5, 1996
a) Initial release.

Figure 1.

HLU-619 Front Panel. The PairGain

HLU-619 is the Central Office side of a single
pair repeaterless T1 transmission system.

CAUTION

HIS PRODUCT INCORPORATES STATIC SENSITIVE

COMPONENTS

. P

ROPER ELECTROSTATIC DISCHARGE

PROCEDURES MUST BE FOLLOWED

Summary of Contents for HIGAIN-2 HLU-619

Page 1: ...THE FRONT PANEL 10 8 2 USING AN RS 232 TERMINAL 11 9 LOOPBACK OPERATION 12 10 HLU 619 GNLB TEST PROCEDURE 20 11 HLU 619 A1LB TEST PROCEDURE 20 12 HLU 619 A2LB TEST PROCEDURE 22 13 HLU 619 A3LB TEST PR...

Page 2: ...slot 19 inch shelf PairGain HHS 319 3 slot 19 inch horizontal shelf PairGain HMS 317 28 slot 23 inch shelf PairGain HMS 308 8 slot remote enclosure 1 03 The Charles Ind 343 00 and 340 00 shelves do n...

Page 3: ...ber optic systems can be installed at a leisurely pace and cut over from HiGain 2 when it is convenient The installed HiGain 2 system can then be easily removed and utilized elsewhere 3 SPECIFICATIONS...

Page 4: ...y the transceiver and then passed on to the HLU 619 demultiplexer module The demultiplexer provides frame synchronization for the VHDSL channel The demultiplexer and VHDSL transceiver work under contr...

Page 5: ...rcuits The line power supply converts the 48 Vdc battery to a 170 Vdc feed that provides loop power feed on the cable pair to the HRU 612 The line power supply can be turned on or off by the microproc...

Page 6: ...helves are partitioned into two equal halves Each half should be fused at 10 A for a total of 20 A per shelf A fully loaded shelf draws 10 5 A worst case This is within the 20 A fuse limit 4 3 USING T...

Page 7: ...us LED still flashes red and the ALRM message is still displayed Figure 3 DB 9 RS 232 I O Pin Outs A standard RS 232 DB 9 female connector on the front panel provides access to the menu interface feat...

Page 8: ...ons should be set to the largest distance range value that does not exceed the distance from the DSX 1 to the shelf 7 04 The transmit and receive DSX 1 ports have splitting access and bridging miniatu...

Page 9: ...150 619 100 Revision 01 Page 9 Figure 5 HLU 619 Loopback Configurations The most important of the HiGain 2 family of loopback options is the Smart Jack loopback which emulates the functions of a stand...

Page 10: ...by pressing the SEL button for six seconds until the message DFLT NO appears 1 To set the default values press the SEL button while the DFLT NO message is displayed DFLT YES appears indicating the fa...

Page 11: ...rgin threshold turns the margin alarm off 8 25 The other RS 232 terminal system settings are set in a similar manner Simply enter the key represented by the letter in parentheses of the parameter to b...

Page 12: ...pecial Loopback SPLB functions A2LB and A5LB are patterned after the Teltrend addressable T1 repeater loopbacks A3LB and A4LB are patterned after the Wescom addressable T1 repeater loopbacks All four...

Page 13: ...equence listed This interactive button procedure permits any of the four HiGain 2 loopbacks to be executed The next loopback option can be presented by pressing the Mode push button however the previo...

Page 14: ...Disables powering to the HRU 612 ENA Enables powering to the HRU 612 ZBTS ON Tells the HiGain 2 system that the ESF frame is operating in its Zero Byte Time Slot Interface ZBTSI mode OFF Tells the HiG...

Page 15: ...e HiGain 2 system to function as a transparent bit pipe HAIS DIS Causes the HiGain 2 system to transmit the AIS signal at both the HLU 619 and HRU 612 T1 output ports when the VHDSL loop is not in syn...

Page 16: ...t HLU DSX 1 input LBPV Local Bipolar Violation A bipolar violation has been received at the DSX 1 input to the HLU 619 SIG Signal The HLU and HRU transceivers are trying to establish contact with each...

Page 17: ...stem Settings review mode defined above CODE Line Code AMI B8ZS The line code that the HLU 619 is receiving at its DSX 1 interface if the DS1 option is set to Auto Otherwise it mimics either of the ot...

Page 18: ...below the threshold 0 to 15 dB set by the user Setting the threshold to 0 inhibits the margin alarm ACO Alarm CutOff A minor alarm occurred and was retired to an ACO condition after pressing the SEL...

Page 19: ...19 remote toward customer see Figure 5 initiated from CPE customer by either the IOR code the HLU 619 front panel Manual Loopback push buttons or the maintenance terminal ARM Armed The HiGain 2 system...

Page 20: ...if the HRU 612 is in loopback Also verify if possible that the Loopback LED of the HRU 612 is flashing indicating that the HRU 612 is armed or that the Loopback LED lights steadily indicating that th...

Page 21: ...1 0101 1101 0101 D5D5 IR ALTERNATE QUERY LPBK Alternate Query Loopback 1101 0101 1110 1010 D5EA TIME OUT OVERRIDE Loopback Time out Override 1101 0101 1101 0110 D5D6 FAR END NI ACTIVATE Unblock AIS an...

Page 22: ...looped data Note This error pattern repeats every 20 seconds as long as the IOR loopback pattern is being sent This same 20 second repeat scenario also applies to the Time out Override and Query comma...

Page 23: ...1 0110 D5D6 FAR END NI ACTIVATE Unblock AIS and pass 2 in 5 1100 0101 0101 0100 C554 IOR POWER DOWN HLU Removes VHDSL line power 0110 0111 0110 0111 6767 Note The left most bit arrives first in all se...

Page 24: ...all the HiGain 2 loopbacks see Figure 5 All code sequences must be present for at least five seconds 2 All of the above loopbacks can also be initiated from the front panel of the HLU 619 with the Mod...

Page 25: ...s required to execute all the HiGain 2 system loopbacks see Figure 5 All code sequences must be present for at least five seconds 3 All of the above loopbacks can also be initiated from the front pane...

Page 26: ...was sent followed by Normal looped data Note This error pattern repeats every 20 seconds as long as the IOR loopback pattern is being sent This same 20 second repeat scenario also applies to the Time...

Page 27: ...pback Time out Override 1101 0101 1101 0110 D5D6 IOR POWER DOWN HLU Removes VHDSL line power 0110 0111 0110 0111 6767 Note The left most bit arrives first in all sequences The detection algorithm func...

Page 28: ...n for repair Any modifications of the unit by anyone other than an authorized PairGain representative voids the warranty 17 03 If a unit needs repair call PairGain for a Return Material Authorization...

Page 29: ...indicate out of tolerance components or excessive temperature drift in critical components HDSL 24 Hour ES Errored Seconds The number of 1 second intervals that contained at least 1 CRC error This val...

Page 30: ...he keyboard to return to the Main menu 20 04 System Settings Screen Viewing system settings allows you to specify any special settings for the HLU 619 For more information about these settings see sec...

Page 31: ...istory Screen Viewing the Alarm History allows you to see information about alarms and their statue since the last time the information was cleared To use the Alarm History Screen 1 Go to the Main men...

Page 32: ...Section 150 619 100 Revision 01 Page 32 Figure 6 HLU 619 Main Menu Figure 7 HLU 619 Status Display...

Page 33: ...Section 150 619 100 Revision 01 Page 33 Figure 8 HLU 619 Set Clock Menu Figure 9 HLU 619 System Settings Menu...

Page 34: ...Section 150 619 100 Revision 01 Page 34 Figure 10 HLU 619 Performance Data Screen Figure 11 HLU 619 7 Day Performance History Screen...

Page 35: ...619 100 Revision 01 Page 35 Figure 12 HLU 619 Alarm History Screen Copyright 1996 PairGain Technologies Inc PairGain is a registered trademark CopperOptics and HiGain 2 are trademarks of PairGain Tech...

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