ADC HRE-425 List 1 User manual

USER MANUAL
HRE 425
H0333-A
HRE-425 List 1 Remote Enclosure
Product Catalog: 150-1114-01
CLEI: T1MFF504

150-425-100-04
ii September 22, 1999 HRE-425 List 1
Revision History of This Manual
Copyright
September 22, 1999
© 1999 ADC DSL Systems, Inc. All rights reserved.
Trademark Information
ADC is a registered trademark of ADC Telecommunications, Inc. HiGain is a registered trademark of ADC DSL Systems, Inc.
No right, license, or interest to such trademarks is granted hereunder, and you agree that no such right, license, or interest
shall be asserted by you with respect to such trademark. Other product names mentioned in this practice are used for
identification purposes only and may be trademarks or registered trademarks of their respective companies.
Disclaimer of Liability
Information contained in this document is company private toADC DSL Systems, Inc., and shall not be modified, used, copied,
reproduced or disclosed in whole or in part without the written consent of ADC.
Contents herein are current as of the date of publication. ADC reserves the right to change the contents without prior notice.
In no event shall ADC be liable for any damages resulting from loss of data, loss of use, or loss of profits, and ADC further
disclaims any and all liability for indirect, incidental, special, consequential or other similar damages. This disclaimer of
liability applies to all products, publications and services during and after the warranty period.
Revision Release Date Revisions Made
01 July 20, 1998 Initial release
02 February 1, 1999 Changed fuse, mounting, and connector specifications
03 September 22, 1999 Added rack mounting instructions and edits to text
04 October 18, 2002 ADC rebrand

150-425-100-04
HRE-425 List 1 September 22, 1999 iii
USING THIS MANUAL
The following conventions are used in this manual:
•Monospace type indicates screen text.
•Keys you press are indicated by small icons such as or . Key combinations to be pressed
simultaneously are indicated with a plus sign as follows: + .
•Items you select are in bold.
•Three types of messages, identified by icons, appear in text.
For a list of abbreviations used in this document, refer to “Abbreviations” on page 19.
INSPECTING SHIPMENT
Upon receipt of the equipment:
•Unpack each container and inspect the contents for signs of damage. If the equipment has been damaged in
transit, immediately report the extent of damage to the transportation company and to ADC DSL Systems,
Inc. Order replacement equipment, if necessary.
•Check the packing list to ensure complete and accurate shipment of each listed item. If the shipment is short
or irregular, contact ADC DSL Systems,Inc. as described in“Product Support” on page 17. If you must store
the equipment for a prolonged period, store the equipment in its original container.
Notes contain information about special circumstances.
Cautions indicate the possibility of personal injury or equipment damage.
The Electrostatic Discharge (ESD) symbol indicates that a device or assembly is susceptible to
damage from electrostatic discharge.
YENTER
CTRL ESC

150-425-100-04
iv September 22, 1999 HRE-425 List 1

150-425-100-04 Table of Contents
HRE-425 List 1 September 22, 1999 v
TABLE OF CONTENTS
Overview ____________________________________________________________________________ 1
Features..............................................................................................................................................1
Applications .......................................................................................................................................2
Installation___________________________________________________________________________ 3
Installation Kit....................................................................................................................................3
Mounting Options..............................................................................................................................4
Desktop Mounting...............................................................................................................4
Wall Mounting.....................................................................................................................4
Rack Mounting ....................................................................................................................5
Backplane...........................................................................................................................................6
Power and Grounding ........................................................................................................................6
Fuse Alarm.........................................................................................................................................7
Slot-pin Assignments.........................................................................................................................9
Field Side HDSL Connections ..........................................................................................11
CPE DS1 (G.703) Connections.........................................................................................13
Turn-Up............................................................................................................................................15
Specifications________________________________________________________________________ 16
Product Support _____________________________________________________________________ 17
Bar Code and Configuration Number Information ________________________________________ 18
Abbreviations _______________________________________________________________________ 19
Certification and Warranty______________________________________________ Inside Back Cover

List of Figures 150-425-100-04
vi September 22, 1999 HRE-425 List 1
LIST OF FIGURES
1. HRE-425 List 1 Remote Enclosure................................................................................................................ 1
2. HRE-425 List 1 Backplate ............................................................................................................................. 4
3. Wall Mounting and Hinging View................................................................................................................. 5
4. HRE-425 List 1 Backplane............................................................................................................................. 6
5. HRU Pin Assignments.................................................................................................................................... 7
6. HRE-425 List 1 Shelf Fusing, Backplane Wiring and Bus Connections....................................................... 8
7. HDU-451 and EDU-451 Pin Assignments..................................................................................................... 9
8. HLU-431 Pin Assignments .......................................................................................................................... 10
9. ERU-412 Pin Assignments........................................................................................................................... 11
10. DS1, G.703 RJ48C Harmonic Cable Interface Assembly (Part Number 150-2201-01).............................. 14
11. DS1, G.703 RJ48X Harmonic Cable Interface Assembly (Part Number 150-2201-02).............................. 15
LIST OF TABLES
1. HDSL Connectors ........................................................................................................................................ 12
2. DS1/G.703/Doubler HDSL Connectors....................................................................................................... 13
3. HRE-425 List 1 Bar Code and Configuration Number Label Descriptions................................................. 19

150-425-100-04
HRE-425 List 1 September 22, 1999 1
OVERVIEW
The HiGain®Remote Enclosure HRE-425 List 1 houses HiGain line units, doubler units, and remote units (HLUs,
HDUs, and HRUs, respectively). The HRE-425 List 1 can also accommodate a -48 Vdc power supply to power
the slots, if required.
Access to the twelve slots is provided by wire-wrap card-edge connectors or by four 25-pair, type 57, backplane
connectors. An optional RJ48 cable assembly provides access to the DS1 interface through a 12-port harmonic
connector that attaches to either of the remote enclosure’s two side panels or to the top or bottom panels. A variety
of grommited cable access openings are located on the enclosure’s top, bottom, sides, and rear covers.
FEATURES
The HRE-425 List 1 provides the following features:
•12 slots for 12 plugs, or 11 plugs and a -48 Vdc local power supply in slot 12 only
•optional RJ48C or RJ48X modular jack assemblies for DS1 customer interface connections
•printed-circuit backplane provides wire-wrap or connectorized interface wiring options
•tamper-proof locking screw for security
•separate fuses for each slot
•wall, rack, or desktop mounting
•support for T1 (DS1) and E1 (G.703) applications.
Figure 1 shows a front view of the HRE-425.
Figure 1. HRE-425 List 1 Remote Enclosure
HRE 425
Bantam jack to
chasis ground for
anti-static wrist
band connection
Slots 1-12 Hex nut
H0334-A

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2 September 22, 1999 HRE-425 List 1
APPLICATIONS
HiGain provides a quick and cost-effective way of delivering T1 High Capacity Digital Service (HCDS) to
customers over metallic cable pairs. The primary application of the HRE-425 List 1 Remote Enclosure is to house
the remote units of a HiGain repeaterless T1 transmission system.
Because the HRE-425 uses standard 400 mechanics slots, it can accommodate any plug with
400 mechanics, including the HDU-451 doubler and the HLU-431 line unit. It can also
accommodate 200 mechanic plugs (half the width of 400 mechanics) used by the HiGain
HRU-411 and HRU-402 remote units.

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HRE-425 List 1 September 22, 1999 3
INSTALLATION
This section provides information on installing and mounting the HRE-425 List 1.
INSTALLATION KIT
The installation kit contains the following items:
•four rack mounting screws
•four bracket attaching screws with locking nuts
•four plastic cable tie wraps
•one spare 0.5A fuse
•one 2A fuse for slot 12 (see “Fuse Alarm” on page 7.)
•two 19-inch or 23-inch rack mounting brackets
•circuit assignment card
•plastic circuit assignment card holder.

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4 September 22, 1999 HRE-425 List 1
MOUNTING OPTIONS
The HRE-425 is suitable for mounting on a desk top, wall or equipment rack. Before setting up the equipment,
select a location that provides appropriate security. The remote enclosure has four rubber feet for desktop
installations and four mounting holes in the back cover for wall mounting.
Desktop Mounting
The remote enclosure includes four stand-off rubber feet for desktop mounting. When using the unit on a desktop,
take care to prevent blocking the air flow from the bottom of the unit.
Wall Mounting
The backplate of the remote enclosure has four wall mounting holes to simplify wall-mounting. To mount the
enclosure on a wall, remove the backplate and use it as a template for the mounting holes as follows:
1Loosen the four rear-panel locking bolts and remove the backplate (Figure 2).
Figure 2. HRE-425 List 1 Backplate
2Using the backplate as a template, mark the wall locations for drilling the wall-mounting holes.
3Drill pilot holes and attach the backplate to the backboard with the four No. 10 x 3/4inch PHS wood screws
and washers supplied with the remote enclosure.
4Use the four locking bolts loosened in Step 1 as hinge mounting bolts to reattach the backplate to the main
chassis side panels. (See Figure 3 on page 5.)
When the main chassis is attached to the backplate, it can be rotated up or down by removing
the two upper or lower mounting bolts and slightly loosening the two remaining mounting bolts
to allow them to act as hinges. This provides access to the enclosure’s backplane and other
internal areas. See Figure 3 on page 5 for hinging details.
RearView
Locking
bolts
Locking bolt
Grommeted cable
access openings
Wall mounting holes
Wall mounting holes
Locking bolt
8.25"
17.25"
H0328-A

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HRE-425 List 1 September 22, 1999 5
Figure 3. Wall Mounting and Hinging View
Rack Mounting
The HRE-425 can be mounted into a 19-inch or a 23-inch relay type rack with one of the two rack mounting
brackets that are provided in the installation kit.
1Orient the mounting brackets to the side panels consistent with the rack size (19 or 23-inch).
2Attach the rack mounting brackets to the bracket mounting holes (see Figure 3) on each side panel with the
four bracket attaching screws and locking nuts.
3Attach the HRE-425 to the rack with the four mounting screws included.
Hinge Up
Backplate
Top
Top
Mounting
hinge
bolt
Harmonic connector
mounting holes
Harmonic connector
mounting holes
Mounting hinge
bolt (remove)
Hinge
mounting
bolt
Hinge Down
SideView
SideView
Bracket
mounting holes
Bracket
mounting holes
H0329-A
ADC
ADC

150-425-100-04
6 September 22, 1999 HRE-425 List 1
BACKPLANE
The HRE-425 List 1 Backplane shown in Figure 4 can be connected in one of the following ways:
•trace connections to each of the 12 card-edge connectors (J1 through J12)
•terminal block connections to TB1
•25-pair, multiple connectors (P1, P2, P3, and P4)
Figure 4. HRE-425 List 1 Backplane
POWER AND GROUNDING
ADC recommends that pin 4 of TB1, frame ground, be connected to earth ground according to the grounding
recommendations found in Section 9 of Bellcore’s GR-1089-DEC, 1996 (see Figure 6 on page 8). Failure to
properly ground the enclosure could result in the following adverse situations:
•bit errors due to the inability of the ungrounded case to attenuate the noise inducing energy from stray EMI
fields
•bit errors due to crosstalk from adjacent communication equipment
12 numbered, backplane printedcircuit traces connect the HRE-425 frame ground to thechassis
ground, pin 1, of every slot, which is the normal connection. The trace can be cut to disconnect
the HRE-425 frame ground from pin 1 of any slot. This permits the HRE-425 to support plugs
which use pin 1 for other purposes than frame ground. (These traces have no effect on pin 27,
which always remains connected to frame ground of the shelf.) The area where the trace may
be safely cut is identifiedby a small rectangle. See Figure 4. These locations are numbered with
their corresponding slot number, either below or above the rectangle.
P1
J12-J1
F1-F12
P2 P4 Tb1 P3 Frame ground trace
12
11
10 98765
4
3
2
1
H0335-A

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HRE-425 List 1 September 22, 1999 7
Figure 5. HRU Pin Assignments
FUSE ALARM
Each of the 12 slots come equipped with a 0.5 Amp fuse between the 48 Vdc shelf supply and pin 35 as shown in
Figure 6on page 8. This accommodates the maximum power consumption requirements when using the HRE-425
to house HLU-431 line units.
All the fuse alarm contacts are transmitted together on one bus and connected to the Fuse Alarm, pin 3 of TB1. If
a fuse opens, the normally floating Fuse Alarm in pin 3 drives to -48 V.
There is a shock hazard to craft personnel as a result of contact with a case that may have
floated to an unsafe voltage. Properly ground the case to avoid shock hazard.
Damage to the HRU circuits may result if the discharge path to earth ground for its secondary
surge voltage protection components is missing. Connect pin 4 of TB1 to earth ground to avoid
HRU damage (see Figure 6 on page 8).
In unusual noise environments, it may be necessary to connect the HRUs circuit ground Pin 17
to frame ground Pin 1 of the card-edge connector to remove bit errors from the T1 payload (see
Figure 5).
27
25
23
21
19
17
15
13
11
9
7
3
5
1
DS1TIP
DS1RING
HDSL2RING1
HDSL2TIP1
RS-232DATAOUT -48V
CIRCUITGROUND
FOR FACTORY TESTING
DS1RING1
HDSL1RING
XMT
RCV
HDSL1TIP
DS1TIP
CHASSISGROUND*
28
26
24
22
20
18
16
14
12
10
8
4
6
2
55
53
51
49
47
45
43
41
39
37
35
32 31
56
54
52
50
48
46
44
42
40
38
36
34
30
33
29
Note: Active pins are highlighted in black
RS-232DATAIN
48V LOCAL
POWER SUPPLY
H0336-A

150-425-100-04
8 September 22, 1999 HRE-425 List 1
Figure 6 shows the HRE-425’s backplane wiring and bus connections.
.
Figure 6. HRE-425 List 1 Shelf Fusing, Backplane Wiring and Bus Connections
When slot 12 is used for the 48 Vdc shelf supply, fuse F12 becomes the shelf fuse and must be
replaced by the 2 Amp fuse included in the installation kit. If F12 opens in this application, the
Fuse Alarm is left open and will not be driven to -48 V (as would be the case if an external power
supply were lost).
The internal supply in slot 12 is limited by 2 Amp fuse F12 in order to be compatible with the
maximum current rating of typical, 400 mechanics shelf supplies. This 2 Amp capacity is
sufficient when HRU remote units are used in the other 11 slots but not when HLU-431 line units
are used. An external power supply rated at a minimum of 5 Amps is required to provide
adequate power to a shelf full of HLU-431 line units operating under maximum load. See the
HLU-431 technical practice for additional information (Refer to “Product Support” on page 17).
The frame ground is available at both pins 1 and 27 of each slot.
GND-48VdcTB1
1234
-48 Vdc External
Power Source
Fuse
Alarm Frame GND
0.5A
F11 0.5A F1
0.5A/2A
F12
S
L
O
T
11
S
L
O
T
1
35 3535 17 17 17
111
27 27 27
SLOT 12
Optional Internal
-48 Vdc Power Supply
120 Vac Power
Earth
Ground
H0331-A

150-425-100-04
HRE-425 List 1 September 22, 1999 9
SLOT-PIN ASSIGNMENTS
Slot-pin assignments for the HRU are shown in Figure 5 on page 7. Slot-pin assignments for the various other
HRE-425 compatible plugs (HDU-451 and EDU-451, HLU-431, and ERU-412) are shown in the following
figures. Figure 7 shows the slot-pin assignments for the HDU-451 and EDU-451.
Figure 7. HDU-451 and EDU-451 Pin Assignments
27
25
23
21
19
17
15
13
11
9
7
3
5
1
HDSLL2OUTTIP
HDSLL2OUTRWG
DS1TIP1
DS1RING1
HDSL2INTIP1
HDSL2INRING
HDSL1RING
HDSL1TIP
RS-232DATAINRS-232DATAOUT
FORFACTORYTESTING
CHASSISGROUND
28
26
24
22
20
18
16
14
12
10
8
4
6
2
55
53
51
49
47
45
43
41
39
37
35
32 31
56
54
52
50
48
46
44
42
40
38
36
34
30
33
29
Note: Active pins are highlighted in black.
H0337-A

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10 September 22, 1999 HRE-425 List 1
Figure 8 shows the slot-pin assignments for the HLU-431.
Figure 8. HLU-431 Pin Assignments
27
25
23
21
19
17
15
13
11
9
7
3
5
1
DS1TIP
DS1RING
HDSL2RING1
HDSL2TIP1
RS-232DATAOUT
ALARM
MANAGEMENT
48V
FUSEALARM
CIRCUITGND
FACTORYBURN-IN(DONOTUSE)
DS1RING1
HDSL1RING
XMT
RCV
HDSL1TIP
DS1TIP1
CHASSISGROUND
28
26
24
22
20
18
16
14
12
10
8
4
6
2
55
53
51
49
47
45
43
41
39
37
35
32 31
56
54
52
50
48
46
44
42
40
38
36
34
30
33
29
Note: Active pins are highlighted in black H0338-A

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HRE-425 List 1 September 22, 1999 11
Figure 9 shows the slot-pin assignments for the ERU-412.
Figure 9. ERU-412 Pin Assignments
Field Side HDSL Connections
Connect the HDSL field side ports to the wire-wrap pins of each connector (see above Figure 5, Figure 7,
Figure 8, and Figure 9 for representations of slot-pin assignments).
You can also use these connections to access the two HDSL CO side Loop 1 IN and Loop 2 IN pairs for doubler
applications.
Only the 120Ω, G.703 ERU should be used in the HRE-425. The 75Ω, G.703 ERU should not be
used because its 75 Ωinterface requires BNC connectors that are not available in the HRE-425.
The HDSL 1 designation refers to Loop 1 and HDSL 2 to Loop 2. If these leads are reversed, a
CHREV message is displayed in the ALARMS display field when viewing the HiGain Status
screen. This condition does not affect system operation, but should be corrected to avoid any
confusion regarding the identities of the two HDSL loops.
27
25
23
21
19
17
15
13
11
9
7
3
5
1
TIP
TIP1
RING1
HDSL2TIP1
HDSL2RING1
RING
HDSL1RING
HDSL1TIP
CHASSISGROUND*
28
26
24
22
20
18
16
14
12
10
8
4
6
2
55
53
51
49
47
45
43
41
39
37
35
32 31
56
54
52
50
48
46
44
42
40
38
36
34
30
33
29
* CHASSIS GRND MAY BE TIEDTO
EARTH GRND PER LOCAL PRACTICE
XMT
RCV
48V LOCAL
POWER SUPPLY
-
+
CIRCUITGROUND
120-OHM
DB 15
120-OHM
DB 15
G.703
G.703
H0339-A

150-425-100-04
12 September 22, 1999 HRE-425 List 1
The 25-pair backplane connections P3 and P4 are listed below in Table 1.
.
The two HDSL facilities access cables that terminate on P3 and P4 provide the necessary XMT
and RCV isolation required if the HRE-425 is used to provide access to standard T1 facilities,
such as when T1 plugs, like SmartJack Network Interface Devices (NIDs), are used.
Table 1. HDSL Connectors
P3 (Doubler Loop 1 In/ HDSL Loop 1 In) (a)
(a) P3 Pins 13 through 25 and 38 through 50 are unused.
Slot Pin No. P3 Pin No Card Slot P3 Pin No. Slot Pin No.
1 1 26
2 2 27
13 3 3 28 7
4 4 29
HDSL 1 5 5 30 HDSL1
6 6 31
Loop 1 In 7 7 32 Loop 1 In
(Doubler) 8 8 33 (Doubler)
9 9 34
Ring 10 10 35 Tip
11 11 36
12 12 37
P4 (Doubler Loop 2 In/HDSL Loop 2 In)
Slot Pin No. P4 Pin No Card Slot P4 Pin No. Slot Pin No.
1 1 26
2 2 27
47 3 3 28 41
4 4 29
HDSL 2 5 5 30 HDSL 2
6 6 31
Loop 2 In 7 7 32 Loop 2 In
(Doubler) 8 8 33 (Doubler)
9 9 34
Ring 1 10 10 35 Tip 1
11 11 36
12 12 37

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HRE-425 List 1 September 22, 1999 13
CPE DS1 (G.703) Connections
The DS1 (G.703) XMT and RCV interfaces can be made to the appropriate pins through wire-wrap connections
for the card-edge connectors shown in Figure 5 on page 7 for HRU, Figure 7 on page 9 for HDU-451 and
EDU-451, Figure 8 on page 10 for HLU-431, or Figure 9 on page 11 for ERU-412. Alternately, they can be
connected to the two 50-pair connectors P1 and P2, as shown in Table 2.
Table 2. DS1/G.703/Doubler HDSL Connectors
P1 (DS1/G.703/Doubler HDSL Loop 2 Out(a)
(a) P1Pins 13 through 25 and 38 through 50 are unused.
Slot Pin No. P1 Pin No. Card Slot P1 Pin No. Slot Pin No.
1 1 26
2 2 27
49 3 3 28 55
4 4 29
(DS1, G.703) TX/IN 5 5 30 (DS1, G.703) TX/IN
6 6 31
Loop 2 Out 7 7 32 Loop 2 Out
(Doubler) 8 8 33 (Doubler
9 9 34
Ring 10 10 35 Tip
11 11 36
12 12 37
P2 (DS1/G.703/Doubler HDSL Loop 1 Out)
Slot Pin No. P1 Pin No. Card Slot P1 Pin No. Slot Pin No.
1 1 26
2 2 27
15 3 3 28 5
4 4 29
(DS1, G.703) RX/OUT 5 5 30 (DS1, G.703) RX/OUT
6 6 31
Loop 1 Out 7 7 32 Loop 1 Out
(Doubler) 8 8 33 (Doubler)
9 9 34
Ring 1 10 10 35 Tip 1
11 11 36
12 12 37

150-425-100-04
14 September 22, 1999 HRE-425 List 1
You can purchase optional 12-port RJ48 harmonic cable assemblies for the CPE interface from ADC: (refer to
“Product Support” on page 17).
•RJ48C (Part Number 150-2201-01), shown in Figure 10 on page 14
•RJ48X (Part Number 150-2201-02), shown in Figure 11 on page 15
You can attach these cable assemblies to the top, bottom, or either of the two side plates through the wall mounting
holes located on all 4 of these plates. Figure 3 on page 5 shows the locations of these mounting holes on the side
panel. Similar mounting holes are provided in the top and bottom plates (not shown).
Figure 10. DS1, G.703 RJ48C Harmonic Cable Interface Assembly (Part Number 150-2201-01)
Slot 1
Slot 12
Slot 12
Slot 12
XMT
RCV
Slot 1
Slot 1
P1RJ-48C P5
P2
1
2
4
5
1
26
1
26
12
37
12
37
1
2
4
5
R
T15 5
R
T15 5
R
T49 55
R
T49 55
H0340-A
Slot 1
Slot 12
Slot 1
Slot 12