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PAIRGAIN TECHNOLOGIES 

Section 150-319-251

Technical Practice 

Revision 01

Engineering - PLANT Series 

July 6, 1995

                          

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MODEL ELU-319 Issue 1

List 5, PairGain #150-1236-05 (75 Ohm)

List 6, PairGain #150-1236-06 (120 Ohm)

CONTENTS

PAGE

A. PRODUCT OVERVIEW

2

1.

DESCRIPTION AND FEATURES

2

2.

APPLICATIONS

2

3.

SPECIFICATIONS

3

4.

CERTIFICATION

3

5.

WARRANTY

4

6.

TECHNICAL ASSISTANCE

4

B. FUNCTIONAL DESCRIPTION

4

7.

OPERATIONAL CAPABILITIES

4

8.

SYSTEM PARAMETER SETTINGS

7

9.

MAINTENANCE PORT OPERATION

8

10. LOOPBACK DESIGN DESCRIPTION

9

C. INSTALLATION AND TEST

10

11. INSTALLATION OPTIONS

10

12. TESTING PROCEDURES

11

CAUTION

This product incorporates static sensitive

components.  Proper electrostatic discharge

procedures must be followed.

Figure 1.  ELU-319 Front Panel.  The PairGain ELU-319
is the local unit used in conjunction with the ERU-412
remote unit to provide a complete HiGain HDSL system.

Содержание 150-1236-05

Страница 1: ...FICATION 3 5 WARRANTY 4 6 TECHNICAL ASSISTANCE 4 B FUNCTIONAL DESCRIPTION 4 7 OPERATIONAL CAPABILITIES 4 8 SYSTEM PARAMETER SETTINGS 7 9 MAINTENANCE PORT OPERATION 8 10 LOOPBACK DESIGN DESCRIPTION 9 C...

Страница 2: ...nel status indicating light emitting diode LED indicator On Off front panel display power cycling G 703 Loss of Signal LOS detector 125 consecutive zeros Margin threshold alarm Single step default set...

Страница 3: ...at HDB3 Power Consumption 14 watts typical 18 watts maximum Heat Dissipation 6 watts typical 8 watts maximum Fusing Internal 1 25 amps 125V connected to FUSEALARM output on pin 10 Span Voltage 136V dc...

Страница 4: ...IONAL DESCRIPTION 7 OPERATIONAL CAPABILITIES 7 01 HiGain utilizes PairGain s 2 Bits 1 Quaternary 2B1Q HDSL transceiver systems to establish two full duplex 1040 Kbps data channels between the ELU 319...

Страница 5: ...both the customer equipment and the HDSL line 7 09 The ELU 319 contains two separate power converters The main power supply converts 48V local battery to logic power for the ELU 319 circuits The line...

Страница 6: ...0A fuse limit 7 16 An RS 232 connector DB 9 on the front panel provides access to HiGain maintenance provisioning and performance monitoring interface Basic functionality is available via a dumb termi...

Страница 7: ...s are required to set the ELU 319 configuration You can set the ESAL LBTO and MAL system parameter options with the front panel pushbuttons MODE and SEL you can set all parameters from the maintenance...

Страница 8: ...f system option settings procedure MARG Margin Alarm Threshold 0 to 15 4 Displays the Margin Alarm Threshold in dB set using the RS 232 Maintenance port If the margin on either loop drops below this v...

Страница 9: ...pears on the front panel display see Figure 4 followed by the message NLO If the SEL button is now pressed an NLOC loopback is executed and the message changes from NLO to NLOC If the MODE button is p...

Страница 10: ...in Technologies 11 02 The ELU 319 mounts in the PairGain HMS 318 shelf The auxilary PairGain connector panel HCP 322 connects to the HMS 318 shelf and provides G 703 75 ohm BNC connector access to eac...

Страница 11: ...rom Customer is looped back to customer at ERU 412 NREM Network Remote Loopback G 703 signal is looped back to G 703 at the ERU 412 TLOS Transmit Loss Of Signal ERU 412 is in a logic loopback state ca...

Страница 12: ...EN Power Feed Open Indicates an open circuit in the Tip and Ring of either HDSL pair BAD RT No response from ERU The ELU 319 does not receive any response from the ERU 412 Thus the ERU s integrity is...

Страница 13: ...ng the threshold to 0 zero inhibits the alarm ACO Alarm Cut Off Al Alarm cut off is in effect LAIS Local Alarm Indicating Signal Indicates an AIS all 1 s pattern is being transmitted from the local G...

Страница 14: ...of the 2B1Q pulse from the distant end HiGain operates with pulse attenuations in excess of 30 dB This value is related to the cable pair s loss at 260 kHz The pulse attenuation is a more direct indi...

Страница 15: ...Section 150 319 251 Revision 01 Page 15 Figure 6 Main Menu Figure 7 Span Status Display no Doubler...

Страница 16: ...Section 150 319 251 Revision 01 Page 16 Figure 8 Span 1 Status Display in system with one Doubler Figure 9 Span 2 Status Display in system with one Doubler...

Страница 17: ...Section 150 319 251 Revision 01 Page 17 Figure 10 System Settings Menu Figure 11 Set Clock Menu...

Страница 18: ...Section 150 319 251 Revision 01 Page 18 Figure 12 Performance Data Display no Doubler Figure 13 Span 1 Performance Data Display in system with no Doubler...

Страница 19: ...Section 150 319 251 Revision 01 Page 19 Figure 14 Span 2 Performance Data Display in system with no Doubler Figure 15 Performance Data History Display no Doubler...

Страница 20: ...Section 150 319 251 Revision 01 Page 20 Figure 16 Span 1 Performance Data History Display in system with one Doubler Figure 17 Span 2 Performance Data History Display in system with one Doubler...

Страница 21: ...Section 150 319 251 Revision 01 Page 21 Figure 18 Alarm History no Doubler Figure 19 Span 1 Alarm History in system with one Doubler...

Страница 22: ...Section 150 319 251 Revision 01 Page 22 Figure 20 Span 2 Alarm History in system with one Doubler Figure 21 Loopback Menu no Doubler...

Страница 23: ...51 Revision 01 Page 23 Figure 22 Loopback Menu in system with one Doubler Copyright 1995 PairGain Technologies Inc PairGain is a registered trademark CopperOptics and HiGain are trademarks of PairGain...

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