PairGain HIGAIN HRU-412 User manual

HIGAIN REMOTE UNIT
PAIRGAIN TECHNOLOGIES, INC.
ENGINEERING SERVICES TECHNICAL PRACTICE
SECTION 150-412-182-01
Revision History of This Practice
Revision 01- December 22, 1997
A) Initial Release
Model List Number Part Number
HRU-412 8B 150-1103-82

Revision 01 December 22, 1997 150-412-182-01
ii PairGain Engineering - Plant Series HRU-412 List 8B
©Copyright 1997 PairGain Technologies, Inc.
PairGain and HiGain are registered trademarks of PairGain Technologies, Inc.
Information contained inthis document is company private to PairGain Technologies,Inc.,
and shall not be modified, used, copied, reproduced or disclosed in whole or in part without
the written consent of PairGain.
Other product names mentioned in this practice are used for identification purposes only
and may be trademarks or registered trademarks of their respective companies.

150-412-182-01 December 22, 1997 Revision 01
HRU-412 List 8B PairGain Engineering - Plant Series iii
USING THIS TECHNICAL PRACTICE
Two types of messages, identified by icons, may appear in the text.
Notes contain information about special circumstances.
Cautions indicate the possibility of equipment damage or the
possibility of personal injury.

Revision 01 December 22, 1997 150-412-182-01
iv PairGain Engineering - Plant Series HRU-412 List 8B

150-412-182-01 December 22, 1997 Revision 01
HRU-412 List 8B PairGain Engineering - Plant Series v
TABLE OF CONTENTS
Overview _______________________________________________ 1
Application _____________________________________________ 2
Specifications ___________________________________________ 3
Functional Description____________________________________ 4
Operational Capabilities........................................................... 4
Front Panel Features ................................................................ 5
Back Panel Features................................................................. 8
Local Powering........................................................................ 9
Installation ____________________________________________ 10
Unpack and Inspect the Shipment.......................................... 10
Install the HRU-412 List 8B.................................................. 10
Installation Test...................................................................... 12
Configure, Provision, and Monitor Performance _____________ 13
Connect a DumbTerminal...................................................... 13
Log On and Use the Menus ................................................... 14
View Span Status..................................................... 15
Set Clock ................................................................. 16
System Settings ....................................................... 17
View Performance Data .......................................... 18
View 7 Day History................................................. 19
View Alarm History................................................ 20
Loopbacks _____________________________________________ 22
Certification and Warranty_______________________________ 25
VCCI Certification................................................................. 25
UL Listing.............................................................................. 25
Warranty ................................................................................ 26

Revision 01 December 22, 1997 150-412-182-01
vi PairGain Engineering - Plant Series HRU-412 List 8B
Technical Support _______________________________________27
Phone or Fax...........................................................................27
Returns....................................................................................27
World Wide Web....................................................................28

150-412-182-01 December 22, 1997 Revision 01
HRU-412 List 8B PairGain Engineering - Plant Series 1
OVERVIEW
The PairGain®HiGain®Remote Unit Model HRU-412 List 8B is the remote
end of a repeaterless T1 transmission system. An HRU-412 List 8B connects
to a HiGain Line Unit (such as the HLU-319 List 4B), creating a HiGain
system which provides 1.544 Mbps transmission on two unconditioned
copper pairs covering 3658 m of 0.51 mm wire or 2743 m of 0.4 mm wire,
including bridge taps and gauge changes.
A HiGain system utilizes 2B1Q High-bit-rate Digital Subscriber Line
(HDSL) transmission technology. The HRU-412 List 8B complies with
ANSI T1E1.4, T1.403-1989, and T1E1.4/92-002R2 technical standards and
recommendations. The HRU-412 List 8B mounts in a single slot of an
industry standard 400 Mechanics type shelf. The system complies with
Transport System Generic Requirements (TSGR) common requirements
TR-TSY-000499.
The HRU-412 List 8B features:
•ANSI T1.403 DS1 Customer Interface (CI)
•Front panel DS1 and HDSL LEDs
•Front panel loopback button
•Signature resistance on DS1 and HDSL ports
•Generic and addressable repeater Loopback activation codes
•Metallic Smart Jack loopback (conforms to TR-TSY-000312)
•Provisioning switches for customer premise equipment (CPE) current,
receive (RCV) level, and transmit loss of signal (TLOS) initiated
loopback or alarm
•Front panel jacks for test access
•Craft port
•Front panel HDSL margin threshold indicator for each loop
•Secondary lightning and power-cross protection on HDSL and DS1
interfaces
•784 kbps full-duplex 2B1Q HDSL transmission on each of the two pairs
•DS0 blocking support

Revision 01 December 22, 1997 150-412-182-01
2 PairGain Engineering - Plant Series HRU-412 List 8B
APPLICATION
A HiGain system, consisting of a HiGain line unit and a HiGain remote unit,
provides a quick and cost-effective way of delivering T1 High Capacity
Digital Service (HCDS) to customers over copper pairs. The HiGain system
can be deployed on two unconditioned, non-loaded copper pairs without
repeaters, and without the need for bridged tap removal or binder group
separation.
The general guidelines for HiGain system usage is that each loop have less
than 35 dB of loss at 196 kHz, with 135 ohm driving and terminating
impedances.
Table 1 provides a guide for the loss over various cable gauges at 196 kHz
and 135ohms. The table appliestothe HDSL cable pairs betweentheHiGain
line unit and the HiGain remote unit. Without specific loop insertion loss
data, add 3 dB for each bridged tap and 1 dB for each cable gauge change.
The dc cable resistance determines the simplex powering resistance path of
the loops. The maximum allowable resistance for a HiGain system is
800 ohms over two HDSL simplex loops. This means, for example, where
3.7 km of 0.51 mm wire equals 34.08 dB (insertion loss), resistance is at
622 ohms which is well below the limit of 800 ohms.
A HiGain system operates with a variety of other T1, POTS, Digital Data
Service (DDS) equipment or other HiGain systems sharing the same cable
binder group. HiGain systems provide temporary or permanent DS1 service
and can provide a means of deploying service in advance of fiber-optic
transmission systems.
Table 1. HDSL Loss over Cables
Cable Gauge Loss at 196 kHz
(db/km) Ohms per km
0.4 mm 12.7 272.3
0.51 mm 9.3 170.6
0.61 mm 7.2 105
0.91 mm 5.1 52.5

150-412-182-01 December 22, 1997 Revision 01
HRU-412 List 8B PairGain Engineering - Plant Series 3
SPECIFICATIONS
HDSL
Line Code 784 kbps 2B1Q full duplex
Output +13.5 dBm + 0.5 dBm at 135 ohms
Line Impedance 135 ohms
Startup Time 15 seconds (typical), 60 seconds (maximum)
Maximum Provisioning Loss
35 dB at 196 kHz, 135 ohms
Line Clock Rate
Internal Stratum 4 clock
Power Consumption
4 watts (typical), 4.9 watts (maximum)
Electrical Protection
Secondary surge and power-cross protection on all DS1 and HDSL ports
Environmental
Operating Temperature - 40° C to + 65° C
Humidity 5 to 95% (non-condensing)
Mounting
Single-wide 400 Mechanics type shelf
DS1
One-way Delay < 220 microseconds per HDSL span
Line Impedance 100 ohms
Pulse Output Level 0 dB (RLEV = 0), -15 dB (RLEV = 15)
Pulse Input Level > -22.5 dB
Line Rate 1.544 Mbps + 200 bps

Revision 01 December 22, 1997 150-412-182-01
4 PairGain Engineering - Plant Series HRU-412 List 8B
Output Wander
(MTIE and TVAR) Compliant with Section 7.2.1 of the
T1X1.3/90-026R7 SONET committee report
Line Format AMI, B8ZS, or ZBTSI
Frame Format ESF, SF, or unframed
Dimensions
Height: 14.22 cm
Width: 3.55 cm
Depth: 14.22 cm
Weight 511 g
FUNCTIONAL DESCRIPTION
This section describes the functions of the HRU-412 List 8B.
Operational Capabilities
HiGain utilizes PairGain’s 2B1Q HDSL transceiver system to establish two
full-duplex 784 kbps data channels between the HLU-319 List 4B and a
remotely mounted HRU-412 List 8B. This provides a total capacity of 1.568
Mbps between the two units. PairGain’s HDSL technology provides full-
duplex services at standardT1 ratesovercopper wires between the HLU-319
List 4B and the HRU-412 List 8B, which comprise one HiGain system.
The HRU-412 List 8B power supply converts a local -48 Vdc input to
voltages and currents required for internal use. The power supply generates
+5 Vdc output.