CopperOptics PairGain HiGain HRU-512 User manual

HIGAIN REMOTE UNIT
PAIRGAIN TECHNOLOGIES, INC.
ENGINEERING SERVICES TECHNICAL PRACTICE
™150-512-100-03d¨
SECTION 150-512-100-03
Model List Number Part Number CLEI Code
HRU-512 1 150-1253-01 T1LIEPNRAA
L
TELEPHONE CO PROPERTY
OK
MAR
ES
ESF
SF
ERR
ZS
AMI
BPV
B8
NET
CI
LOS
LOS
L
P
1
C
O
D
E
C
I
L
I
N
E
M
O
N
C
I
L
I
N
E
M
O
N
L
O
C
R
E
M
F
R
M
R
S
X
M
T
R
C
V
L
B
A
L
M
+
-
60 mA
MON
2
3
2
HDSL
DS1
HRU 512
H G REM UNIT
IAIN

150-512-100-03, Revision 03
ii September 25, 1998 HRU-512 List 1
Revision History of This Practice
USING THIS PRACTICE
Two types of messages, identified by icons, appear in the text.
©Copyright 1998 PairGain Technologies, Inc.
PairGain and HiGain are registered trademarks HiGain of PairGain Technologies, Inc.
Information containedin thisdocumentis 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.
Revision Release Date Revisions Made
01 August 16, 1994 Initial Release
02 September 5, 1995 Modified and updated
03 September 25, 1998 Modified and updated
Notes contain information about special circumstances.
Cautions indicate the possibility of equipment damage or
the possibility of personal injury.

150-512-100-03, Revision 03
HRU-512 List 1 September 25, 1998 iii
TABLE OF CONTENTS
Overview _______________________________________________ 1
Applications ____________________________________________ 2
Functional Description____________________________________ 3
Operational Capabilities........................................................... 3
Front Panel...............................................................................5
Rear Panel Features..................................................................8
Local and Line Power............................................................10
Installation ____________________________________________ 11
Unpack and Inspect the Shipment.......................................... 11
Install the HRU-512 List 1..................................................... 11
Installation Test...................................................................... 14
Provisioning........................................................................... 15
Connect a Maintenance Terminal..........................................15
Log On and Use the Menus ................................................... 17
Loopbacks.............................................................................. 25
Specifications __________________________________________ 29
Abbreviations __________________________________________ 30
Product Support________________________________________ 31
Technical Support.................................................................. 31
Warranty ................................................................................ 32
FCC Compliance.................................................................... 32

150-512-100-03, Revision 03
iv September 25, 1998 HRU-512 List 1
LIST OF FIGURES
Figure 1. HRU-512 List 1 Block Diagram .............................................5
Figure 2. HRU-512 List 1 Front Panel ...................................................6
Figure 3. HRU-512 List 1 Rear Panel.....................................................9
Figure 4. HRU-512 List 1 Edge Connector Pinouts.............................14
Figure 5. DB-9 Connector Pinouts .......................................................16
Figure 6. Remote Log on Screen..........................................................18
Figure 7. Main Menu Local Log On.....................................................19
Figure 8. Span Status Display...............................................................20
Figure 9. System Settings Menu...........................................................21
Figure 10. Performance Data................................................................22
Figure 11. 7 Day History ......................................................................23
Figure 12. Alarm History Screen..........................................................24
Figure 13. HiGain-FT1 Loopback Configurations...............................28

150-512-100-03, Revision 03
HRU-512 List 1 September 25, 1998 v
LIST OF TABLES
Table 1. HRU-512 List 1 Front Panel Components ............................. 7
Table 2. Rear Panel Components ........................................................10
Table 3. HRU-512 List 1 Alarm History Screen Definitions ..............24

150-512-100-03, Revision 03
vi September 25, 1998 HRU-512 List 1

150-512-100-03, Revision 03 Overview
HRU-512 List 1 September 25, 1998 1
OVERVIEW
The PairGain®HiGain®Remote Unit Model HRU-512 List 1 is the remote
end of a single pair repeaterless fractional T1 (FT1) transmission system. or
in equivalent enclosure manufactured by PairGain Technologies. When used
in conjunction with the HiGain Line Unit (HLU) the system provides 784
kbps transmission on one unconditioned copper pair over the full Carrier
Service Area (CSA) range. The CSA encompasses approximately 12000 feet
of AWG 24 or 9000 feet of AWG 26 wire, including bridged taps and gauge
changes. This HiGain system utilizes 2B1Q High-bit-rate Digital Subscriber
Line (HDSL) transmission technology as recommended by Bellcore
TA-TSY-001210.
The HRU-512 List 1 complies with ANSI T1.403-1989 and
T1E1.4/92-002R2 technical standards and recommendations. The
HRU-512 List 1 mounts in a single slot of any industry standard 400
mechanics shelf. The system also complies with TR-TSY-000063 Network
Equipment Building System (NEBS) Generic Equipment requirements, and
Transport System Generic Requirements (TSGR) common requirements
TR-TSY-000499.
The HRU-512 List 1 features:
•ANSI T1.403 DS1 Customer Interface
•HDSL Line or Local Power Options
•Front Panel DS1 and HDSL Status Display Indicators
•Extensive Loopback Capabilities
•Metallic NREM Loopback. Conforms to
TR-TSY-000312
•Provisioning Switches for CPE current, RCV LBO and XMT LOS
Initiated Loopback or AIS
•Front Panel Jacks for Test Access
•RS-232 Craft port
•CPE Current Monitor Test Points
•Front Panel HDSL Margin Threshold Indicator
•Lightning and Power Cross Protection on HDSL and DS1 Interfaces

Applications 150-512-100-03, Revision 03
2 September 25, 1998 HRU-512 List 1
•784 kbps Full-Duplex 2B1Q HDSL Transmission on 1 Pair
•Payload Bandwidth Selectable from 128 kbps (2 channels) to 768 kbps
(12 channels) in increments of 128k
•Provisional Robbed Bit (RBS) or Clear (CLR) Signaling for Each DS0
Channel.
APPLICATIONS
The primary application of the HiGainFractional System is to provide a quick
and cost-effective way of delivering FT1 High Capacity Digital Service
(HCDS) to customers over a metallic cable pair. The HiGain system can be
deployed on one unconditioned, non-loaded wire pair without repeaters, and
without the need for either bridged tap removal or binder group separation of
other pairs providing FT1 services.
The general guidelines, on which the CSA deployments rules are based,
require that the HDSL HiGain loop have less than 35 dB of loss at the 2B1Q
line rate of 196 kHz, at 135 Ωsource and load impedances.
The HiGain system operates with any number of other T1, POTS, Digital
Data Service (DDS) or other HiGain Systems sharing the same cable binder
group.

150-512-100-03, Revision 03 Functional Description
HRU-512 List 1 September 25, 1998 3
FUNCTIONAL DESCRIPTION
This section describes the functions of the HRU-512 List 1.
OPERATIONAL CAPABILITIES
HiGain utilizes PairGain’s 2B1Q HDSL transceiver system to establish a
full-duplex784kbpsdatachannelsbetween theHLU andaremotelymounted
HRU-512 List 1. See Figure 1 for the HRU-512 List 1 block diagram.
When the HRU-512 List 1 is line powered, it converts the metallic 130 Vdc
line voltage to the 5 V and -5 V power required by the HRU-512 List 1
circuitry. When the HRU-512 List 1 is locally powered from -48 V, an
additional 30 V power supply is created. This provides a 60 mA simplex
current source to power an external NID (Network Interface Device) if the 60
mA I-CPE current option is enabled.
The HRU-512 List 1 dissipates 5 Watts of power and may consume up to
6.5 Watts when feeding 60 mA of simplex current to the CI.
Use caution when the HRU-512 List 1 is used to power external
CSUs. Some CSUs require more output voltage than the 30
Volts provided by the HRU. Also, the HRU can not power both
a NID and a CSU at the same time.
The 60 mA option should never be turned on if the
HRU-512 List 1 is line powered. This could overload the
system’s power capabilities and adversely affect its
performance.

Functional Description 150-512-100-03, Revision 03
4 September 25, 1998 HRU-512 List 1
Figure 1 shows a block diagram of the HRU-512 List 1.
Figure 1. HRU-512 List 1 Block Diagram
The HRU-512 List 1 is provisioned at the HLU by the BANDwidth option to
process from 2 to 12 DS0 channels (active channels). The unused channels
are replaced by either 7F or FF according to the setting of the IDLE option.
The active channelscan also be provisionedto be contiguousor alternate. The
signaling mode of each of the active channels can be optioned for either
Robbed Bit (RBS), as is required for voice channels, or Clear (CLR), which
is normally used for data applications.
If the RS-232 port of an HRE-421 remote enclosure is used to
access the HRU-512 List 1, a null modem cable adapter must
be used since the HRE-421 port is configured as DTE.
XMT
LINE
CI
MON
HDSL1
XCVR
13
7
T1
FRAMER
B8ZS
AMI
ESF
SF
OK
ES
LB
R
330K
T
HDSL
S1
17
35
1
CIRCUIT
CHASSIS
-48VDC
GROUND
GROUND
MAR
POWERSUPPLY
MICROPROCESSOR
LOGICLOOPBACK
CLOC
BPV
ERR
LOS
REM
LOC
RLBO 0
-15
TLOS-LB DIS
EN
DEMUX
MUX
RS-
232
METALLIC
LOOPBACK
NREM
5
15
1
A
R1
DS1/RCV
DS1/TX
T1
(+)
I-CPE
T
R
(-)
0
60
1
+
-60mA MON
RCV
LINE
CI
MON