PairGain HiGain HDU-217 Manual de usuario
PAIRGAIN TECHNOLOGIES
HIGAIN®MINI DOUBLERS
Model List Number Part Number CLEI Code
HDU-217 1 150-1506-01 T1R5AS0EAA
HDU-219 1 150-1501-01 T1R5AR0EAA
HCC-239 1 150-1550-01 N/A
PAIRGAIN TECHNOLOGIES, INC.
ENGINEERING SERVICES TECHNICAL PRACTICE
SECTION 150-219-100-02
Revision History of this practice.
Revision 02—December 22, 1997
A) Added references to new HCC-239 List 1
B) Added reference to AT&T 809 cabinet
Section 150-219-100-02 December 22, 1997
Page ii HDU-217/219 and HCC-239 List 1
Copyright 1997 PairGain Technologies, Inc.
PairGain and HiGain are registered trademarks of PairGain Technologies, Inc.
Information contained in this 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 and/or registered trademarks of their respective companies.
December 22, 1997 Section 150-219-100-02
HDU-217/219 and HCC-239 List 1 Page iii
TABLE OF CONTENTS
PRODUCT OVERVIEW______________________________1
Description and Features ...........................................1
About the Mini Doubler.............................................2
Compatibility ............................................................3
Specifications............................................................4
INSTALLING THE MINI DOUBLER __________________6
Inspecting Your Shipment .........................................6
Installing the Mini Doubler........................................6
Installing and Removing the Cut-Through Card.......13
Locating Doubler Unit Enclosures...........................15
TESTING THE UNIT _______________________________16
Using Alarms...........................................................16
Loopback Operation................................................17
SYSTEM ADMINISTRATION _______________________19
Fault Isolation..........................................................19
Technical Support....................................................20
CERTIFICATION AND WARRANTY_________________21
Certification ............................................................21
Warranty .................................................................21
ABBREVIATIONS__________________________________22
Section 150-219-100-02 December 22, 1997
Page iv HDU-217/219 and HCC-239 List 1
USING THIS TECHNICAL PRACTICE
Two types of messages, identified by icons, appear in the text:
A note informs you of special circumstances.
Cautions indicate the possibility of damage to
equipment or the possibility of personal injury.
December 22, 1997 Section 150-219-100-02
HDU-217/219 and HCC-239 List 1 Page 1
PRODUCT OVERVIEW
Description and Features
This product incorporates static sensitive
components. Proper electrostatic discharge
procedures must be followed.
The PairGain®HiGain®Models HDU-217 List 1 and HDU-219 List 1
are low power single-pair doubler units in mini-repeater packages.
Each extends the range of a HiGain repeaterless fractional T1
transmission system.
HDU-217 and HDU-219 HiGain Mini Doubler features include
(Figure1):
Front-panel LED status display
Lightning and power cross-protection on both HDSL interface
ports
Remote power capability from the HDU-D41 (HiGain Doubler
Unit D41) List 2D and the EPH-220 (EtherPhone™220) and
MM-220 (Megabit Modem™220) line units
Low-power dissipation
Figure 1. HDU-217 and HDU-219 List 1 Front Panels
Section 150-219-100-02 December 22, 1997
Page 2 HDU-217/219 and HCC-239 List 1
The HDU-217 and HDU-219 HiGain doubler units (HDUs) extend the
delivery of fractional T1 High-Capacity Digital Service (HCDS) to
customers over metallic cable pairs. The HDUs are installed between
a HLU-D41 List 2D (HiGain line unit) and a HRU-512 (HiGain
remote unit).
The HDU-217 and HDU-219 allow 784 Kbps transmission over twice
the normal Carrier Serving Area (CSA) range to 24,000 feet
(7.315 km) of 24 AWG or 18,000 feet (5.486 km) of 26 AWG copper
loops. Two doubler units can triple the CSA range to 36,000 feet
(10.97 km) of 24 AWG loops or to 27,000 feet (8.22 km) of 26 AWG
loops.
The HCC-239 (HiGain Cut-through Card) is provided with the
HDU-219. The HDU-219 mounts into two adjacent slots of a
standard 239 mini-T1 repeater apparatus case and blocks one slot.
The HCC-239 allows pair cut-through on the blocked repeater slot.
The HDU-217 doubler units occupy one slot of the original DDS or
ISDN repeater apparatus case—these slots are about twice the width
of a 239 T1 repeater. All HiGain modules comply with the applicable
requirements of Network Equipment Building System (NEBS)
Generic Equipment requirements TR-TSY-000063 and Transport
System Generic Requirements TSGR TR-TSY-000499.
About the Mini Doubler
HiGain uses PairGain’s Two-Binary, One-Quaternary (2B1Q) High-
bit-rate Digital Subscriber Line (HDSL) transceiver systems to
establish a full-duplex, 784 kbps data channel between the line units
and the remote units. Each HDU-217 and HDU-219 increases the
maximum range of a new doubler circuit by approximately 12,000
feet (3.66 km) for 24 AWG cable or 9,000 feet (2.74 km) for 26 AWG
cable.
A block diagram of the HDU-217 and HDU-219 with pinouts is
shown in Figure 2. The HDU-217 and HDU-219 power supplies use
the 200 Vdc power feed voltage received on the HDSL pair to
produce the +5 Vdc and –5 Vdc required by the HDU-217 and
HDU-219 electronics. The power feed continues through the HDSL
output pair to a second doubler or to the remote HRU-512.
December 22, 1997 Section 150-219-100-02
HDU-217/219 and HCC-239 List 1 Page 3
Figure 2. Mini Doubler Block Diagram
Compatibility
These HiGain mini doublers operate with any number of other T1,
POTS (Plain Old Telephone Service), Digital Data Service (DDS), or
other HiGain systems sharing the same cable binder group.
A list of HDSL signal cable losses for various cable gauges at 196
kHz and 135 Ohms is shown in Table 1. The table applies to the
HDSL cable pair between the HLU-D41 and the HDU as well as
between the HDU and the HRU-512.
Table 1. HDSL Signal Cable Loss
Cable Gauge Ohms/Thousand
Feet (0.3048 km) Loss @ 196 kHz
(dB/thousand ft)*
26 AWG/0.4 mm 83.3 3.880
24 AWG/0.51 mm 51.9 2.841
22 AWG/0.61 mm 32.4 2.177
19 AWG/0.91 mm 16.1 1.535
*Add 3 dB for each bridged tap and 1 dB for each cable gauge change.
Section 150-219-100-02 December 22, 1997
Page 4 HDU-217/219 and HCC-239 List 1
Specifications
HDSL
Line Code................................................... 784 kbps, 2B1Q full
duplex
Output ........................................................ +13 dBm
Line Impedance.......................................... 135 Ohms
Line Input DC Resistive Signature.............. 25 Ohms
Line Output DC Resistive Signature........... 25 Ohms
Startup Time (per span).............................. 15 seconds (typical), 30
seconds (maximum)
Line Clock Rate
Internal Stratum 4 clock
Maximum Power Consumption
3.6 watts
Maximum Provisioning Loss
35 dB @ 196 kHz, 135 Ohms
Mounting
HDU-217.................................................... Single slot of original
DDS/IDSN Repeater
Mechanics
HDU-219.................................................... Dual 239 T1 Mechanics
Electrical Protection
Secondary surge and power cross protection on all HDSL ports
December 22, 1997 Section 150-219-100-02
HDU-217/219 and HCC-239 List 1 Page 5
Environmental
Operating Temperature............................... –40°to +149°F
(–40°to +65°C)
Operating Humidity (non-condensing)........ 5% to 95%
Operating Temperature
in Outside Enclosures ............................Complies with Section
10.2.1.3 of
TA-NWT-001210
Operating Elevation....................................200 feet (60.96 m) below
sea level to 13,000 feet
(3.96 km) above sea level
Dimensions
HDU-217
(Single slot of original DDS/IDSN Repeater Mechanics)
Height......................................................... 2.6 in. (6.6 cm)
Width .........................................................1.45 in. (3.7 cm)
Depth..........................................................6.5 in. (16.5 cm)
Weight........................................................1.8 lb (0.8165 kg)
HDU-219
(Dual 239 T1 Mechanics)
Height......................................................... 2.6 in. (6.6 cm)
Width .........................................................1.65 in. (4.2 cm)
Depth..........................................................6.5 in. (16.5 cm)
Weight........................................................1.8 lb (0.8165 kg)
Section 150-219-100-02 December 22, 1997
Page 6 HDU-217/219 and HCC-239 List 1
INSTALLING THE MINI DOUBLER
Inspecting Your Shipment
When you receive the equipment, inspect it for signs of damage. If
the equipment has been damaged in transit, immediately report the
extent of damage to the transportation company and to PairGain.
Your shipment should consist of:
• One of the following doubler units
– One HDU-217 List 1
– One HDU-219 List 1 with one HCC-239 List 1
• This document
Installing the Mini Doubler
To install the HDU-217 or the HDU-219 in an enclosure, refer to the
installation manual of the enclosure for information about:
• Cabling
• Proper connections
• Grounding
• Line and local power
All wiring external to the product(s) should
follow the provisions of the current edition of
the National Electrical Code.
Once the HDU-217 or HDU-219 is installed in the enclosure, the
front-panel LED flashes and then lights a steady green. If the LED
continues to flash, or changes colors, refer to"Fault Isolation," in this
practice.
The HDU-217 and HDU-219 doubler units can be housed in a variety
of outdoor apparatus cases manufactured by various vendors. The
capacity of the doubler units in several of these standard enclosures is
listed in Table 2, Table 3, and Table 4. The number of doubler units
that can be plugged into each enclosure is limited by mandatory
thermal constraints. The constraints are imposed to avoid overheating
that may result in damage to the doubler units.
Este manual sirve para los siguientes modelos
2
Tabla de contenidos
Otros manuales de Terminal táctil de PairGain
