ADC FRE-765 User manual

SCP-FRE765-041-03H
Section
PG-FLEX
TECHNICAL PRACTICE
REMOTE TERMINAL
ENCLOSURE
Model List CLEI Code
FRE-765 4A VAMRBN0L~~

SCP-FRE765-041-03H
January 6, 2003 FRE-765 List 4A
©Copyright 2003 ADC DSL Systems, Inc. All Rights Reserved.
ADC is a registered trademark of ADC Technologies, Inc. PG-Flex is a registered trademark of ADC DSL Systems, Inc. No right,
license, or interest to such trademarks is granted hereunder, and you agree that you shall assert no such right, license, or interest
with respect to such trademarks. Other product names mentioned in this document are used for identification purposes only and
may be trademarks or registered trademarks of their respective companies.
Information contained in this document is company private to ADC 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 specifications at any time without notice.
Information furnished by ADC is believed to be accurate and reliable. In no event shall ADC be liable for any damages resulting
from the 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 History of This Practice
Revision Release Date Revisions Made
01 July 26, 2001 Initial Release. This practice updates the connection types used on the FRE-765 List 4A
enclosure and replaces 363-765-104-04 for the FRE-765 List 4A only.
02 January 10, 2002 Release to rebrand document to comply with ADC standards
03 January 6, 2003 Updated Product Support Information

SCP-FRE765-041-03H Using This Technical Practice
FRE-765 List 4A January 6, 2003
USING THIS TECHNICAL PRACTICE
Two types of messages, identified by icons, appear in the text:
Notes contain information about special circumstances.
Cautions indicate the possibility of equipment damage or the possibility of personal injury.

Using This Technical Practice SCP-FRE765-041-03H
January 6, 2003 FRE-765 List 4A

SCP-FRE765-041-03H
FRE-765 List 4A January 6, 2003 i
TABLE OF CONTENTS
Overview ____________________________________________________________________________ 1
Description and Features....................................................................................................................1
Specifications .....................................................................................................................................3
Functional Description.......................................................................................................................3
Operational Capabilities ......................................................................................................3
Backplane Connections .......................................................................................................5
Installation and Test___________________________________________________________________ 7
Mounting .............................................................................................................................7
Chassis Ground Wiring .......................................................................................................8
HDSL, Auxiliary Power, Bypass Pair Wiring.....................................................................8
HDSL Pairs .........................................................................................................10
Bypass Pair..........................................................................................................11
Auxiliary Power Pairs .........................................................................................11
Subscriber Line Wiring .....................................................................................................12
Cabling Verification ..........................................................................................................14
Turn-Up and Testing .........................................................................................................14
Troubleshooting.................................................................................................................14
Product Support _____________________________________________________________________ 15
Technical Support ............................................................................................................................15
Limited Warranty.............................................................................................................................15
Returns .............................................................................................................................................15
FCC Class B Compliance ................................................................................................................17
Modifications ...................................................................................................................................17
Acronyms___________________________________________________________________________ 18

SCP-FRE765-041-03H
ii January 6, 2003 FRE-765 List 4A

SCP-FRE765-041-03H
FRE-765 List 4A January 6, 2003 iii
LIST OF FIGURES
1. FRE-765 List 4A RT Enclosure (Interior View).............................................................................................1
2. Installing the Grommet....................................................................................................................................7
3. Installing the Ground Wire..............................................................................................................................8
4. COT or Field Shelf to FRE-765 RT Enclosure, No Doublers.........................................................................9
5. COT or Field Shelf to FRE-765 RT Enclosure, 1 Doubler .............................................................................9
6. COT or Field Shelf to FRE-765 RT Enclosure, 2 Doublers............................................................................9
7. Installing HDSL Lines...................................................................................................................................10
8. Installing Subscriber Lines............................................................................................................................12

SCP-FRE765-041-03H
iv January 6, 2003 FRE-765 List 4A

SCP-FRE765-041-03H
FRE-765 List 4A January 6, 2003 v
LIST OF TABLES
1. FRE-765 Circuit Assignments.........................................................................................................................4
2. Channel Unit Circuit Utilization .....................................................................................................................4
3. FRE-765 List 4A Backplane Connectors ........................................................................................................5
4. Connector P3 ..................................................................................................................................................5
5. Connector P2 (b).............................................................................................................................................6
6. Power and Ground Line Unit Terminations ....................................................................................................6
7. Grommet Hole Diameters................................................................................................................................7
8. HDSL, Metallic Bypass, and Auxiliary Power Line Unit Terminations.......................................................10
9. Subscriber Termination ................................................................................................................................13

SCP-FRE765-041-03H
vi January 6, 2003 FRE-765 List 4A

SCP-FRE765-041-03H Description and Features
FRE-765 List 4A January 6, 2003 1
OVERVIEW
DESCRIPTION AND FEATURES
The PG-Flex®FRE-765 List 4A Remote Terminal (RT) Enclosure, see Figure 1, “FRE-765 List 4A RT Enclosure
(Interior View),” on page 1, provides convenient mounting of one RT Line Unit and up to three Channel Units,
supporting up to 24 channels. The enclosure provides termination points for subscriber circuits, High bit-rate
Digital Subscriber Line (HDSL), power, and metallic bypass pairs. For each doubler, two auxiliary power pairs
must be provided between the Central Office Terminal (COT) shelf and the RT. The enclosure can be pole or wall
mounted and is environmentally sealed for outside plant installations.
Figure 1. FRE-765 List 4A RT Enclosure (Interior View)
Features of the FRE-765 List 4A RT Enclosure include:
•pole or wall mounting
•line power from COT
•3/4-, 1-, 11/2-, 2-inch cable entrance conduit knockouts with rubber grommet (provided)
•hinged cover for electronics inside RT Enclosure
•Marconi®RLS type gel-filled terminations
•5-pin sockets for circuit protection
21
16
11
HDSL
1
HDSL
2
BYPASS
PWR
1A
PWR
2A
PWR
1B
6
1
PWR
2B
SUBSCRIBERS
1 THRU 24
25
20
10
5
15
1
6
21
5
10
15
20
25
11
16
CHASSIS
GND
T
10
R
R
11
T
20
R
T
R
21
T
1
R
T
Subscriber
Protector Block
Subscriber
Terminations
HDSL,
Auxiliary Power,
Bypass Pair
Protector Block
Ground Bar
Line
Unit
Channel
Units
PWR
1B
PWR
1A
BYPASS
PWR
2A
PWR
2B
HDSL
1
HDSL
2

Description and Features SCP-FRE765-041-03H
2 January 6, 2003 FRE-765 List 4A
PG-Flex HDSL, auxiliary power, and bypass pair circuits must be protected with 3-mil carbon blocks, or
equivalent. Subscriber circuits must also be protected with 3-mil carbon blocks, or equivalent, when these
circuits are exposed to the outside plant.
Use the List 4A RT Enclosures only with the FCS-718 List 2 or higher, or the FCS-719 List 2 or higher COT
Shelves.

SCP-FRE765-041-03H Specifications
FRE-765 List 4A January 6, 2003 3
SPECIFICATIONS
FUNCTIONAL DESCRIPTION
Operational Capabilities
The FRE-765 List 4A RT enclosure requires the following plug-in units:
• one RT Line Unit which is line powered via the HDSL pairs that connect the RT to the PG-Flex COT line
units installed in a COT Shelf.
• one Channel Unit, minimum, with a maximum installation of three Channel Units, supporting up to 24
channels.
Table 1, “FRE-765 Circuit Assignments,” on page 4 shows how circuit assignments are configured in the
FRE-765 with the following deployment rules:
–For channel units providing four (4) circuits, Ckt 1 through Ckt 4 are used for Tip and Ring terminations.
–For channel units providing eight (8) circuits, Ckt 1 through Ckt 8 are used for Tip and Ring terminations.
–For a 24-channel system, you can provision a maximum of 24 POTS circuits or 8 ISDN circuits.
Each PG-Flex channel unit provides four (4) or eight (8) circuits. Table 2, “Channel Unit Circuit Utilization,” on
page 4 shows how the channels are assigned, dependent on the type of service provided, such as:
–Plain Old Telephone Service (POTS)
–Integrated Services Digital Network (ISDN)
Environmental
Operating Temperature -40 °F to +150 °F (-40 °C to +65 °C)
Operating Humidity 5% to 95% (non-condensing)
Operating Elevation -200 feet to 13,000 feet (-60 m to 4,000 m)
Dimensions
Weight: 26.3 lb. (11.9 kg.)
Height: 19.25 in. (48.9 cm.)
Width: 14.25 in. (36.2 cm.)
Depth: 5.93 in. (15.1 cm.)

Functional Description SCP-FRE765-041-03H
4 January 6, 2003 FRE-765 List 4A
Table 1. FRE-765 Circuit Assignments
Line Unit Channel Unit 1 Channel Unit 2 Channel Unit 3 Channel Unit 4
Refer to Table 6, “Power
and Ground Line Unit
Terminations,” on page 6,
and Table 8, “HDSL,
Metallic Bypass, and
Auxiliary Power Line Unit
Terminations,” on page 10
for Line Unit Terminations
from the Backplane
Ckt 1 Ckt 1 Ckt 1
Ckt 2 Ckt 2 Ckt 2
Ckt 3 Ckt 3 Ckt 3
Ckt 4 Ckt 4 Ckt 4 Not
Ckt 5 Ckt 5 Ckt 5 Used
Ckt 6 Ckt 6 Ckt 6
Ckt 7 Ckt 7 Ckt 7
Ckt 8 Ckt 8 Ckt 8
Table 2. Channel Unit Circuit Utilization
Channel Unit Service Configurations
Channel Unit 8-Channel POTS 4-Channel ISDN
T/R 1 Ckt 1 Ckt 1
T/R 2 Ckt 2 Ckt 2
T/R 3 Ckt 3 Ckt 3
T/R 4 Ckt 4 Ckt 4
T/R 5 Ckt 5 —
T/R 6 Ckt 6 —
T/R 7 Ckt 7 —
T/R 8 Ckt 8 —

SCP-FRE765-041-03H Functional Description
FRE-765 List 4A January 6, 2003 5
Backplane Connections
Table 3, “FRE-765 List 4A Backplane Connectors,” on page 5 lists the FRE-765 List 4A backplane connectors
and where each connector is described in this practice.
Table 3. FRE-765 List 4A Backplane Connectors
Connector or Fuse Go to
Subscriber terminations (24 channel systems) Table 9, “Subscriber Termination,” on page 13
P3 and P2 Connectors (reference only) Table 4, “Connector P3,” on page 5 and Table 5,
“Connector P2 (b),” on page 6
HDSL, Metallic Bypass, and Auxiliary Power Line-Unit Terminations Table 8, “HDSL, Metallic Bypass, and Auxiliary
Power Line Unit Terminations,” on page 10
Power and Ground Line-Unit Terminations Table 6, “Power and Ground Line Unit Terminations,”
on page 6
Table 4. Connector P3*†
(*) Terminations in this table are used only with the 8 Channel POTS or 4 Channel ISDN Unit.
(†) Shaded terminations used only with the 8 Channel POTS Units.
Channel
Unit Circuit
Backplane Connector P3 Subscriber Cable Stub
Tip Ring Tip Ring
1 26 1 WH/BL BL/WH
2 27 2 WH/OR OR/WH
3 28 3 WH/GN GN/WH
1 4 29 4 WH/BN BN/WH
5 30 5 WH/SL SL/WH
6 31 6 RD/BL BL/RD
7 32 7 RD/OR OR/RD
8 33 8 RD/GN GN/RD
1 34 9 RD/BN BN/RD
2 35 10 RD/SL SL/RD
3 36 11 BK/BL BL/BK
2 4 37 12 BK/OR OR/BK
5 38 13 BK/GN GN/BK
6 39 14 BK/BN BN/BK
7 40 15 BK/SL SL/BK
8 41 16 YL/BL BL/YL

Functional Description SCP-FRE765-041-03H
6 January 6, 2003 FRE-765 List 4A
Table 5. Connector P2 *(b)
(*) Shaded terminations used only with the 8 Channel POTS or 4 Channel ISDN Units.
(b) Shaded terminations used only with the 8 Channel POTS Units.
Channel
Unit Circuit
Backplane Connector P2 Subscriber Cable Stub
Tip Ring Tip Ring
1 26 1 WH/BL BL/WH
2 27 2 WH/OR OR/WH
3 28 3 WH/GN GN/WH
3 4 29 4 WH/BN BN/WH
5 30 5 WH/SL SL/WH
6 31 6 RD/BL BL/RD
7 32 7 RD/OR OR/RD
8 33 8 RD/GN GN/RD
1 34 9 RD/BN BN/RD
2 35 10 RD/SL SL/RD
3 36 11 BK/BL BL/BK
4 4 37 12 BK/OR OR/BK
5 38 13 BK/GN GN/BK
6 39 14 BK/BN BN/BK
7 40 15 BK/SL SL/BK
8 41 16 YL/BL BL/YL
Table 6. Power and Ground Line Unit Terminations
Connector Type Function
-48V Screw No connection—reserved for future use.
GND Screw No connection—reserved for future use.
CHASSIS GND*
(*) The RT enclosure is shipped with the “CHASSIS GND” wire-wrap post
connected to the adjacent “GND” wire-wrap post on the RT Backplane.
Screw Chassis Ground

SCP-FRE765-041-03H Functional Description
FRE-765 List 4A January 6, 2003 7
INSTALLATION AND TEST
Mounting
The FRE-765 mounts on a pole or a wall. Follow local practices to ensure a secure mounting. Mount the FRE-765
for easy access to the cable entry points on the bottom of the enclosure. Provide ample room to open the door
completely.
For pole mounting the FRE-765, use the Pole Mounting kit, part number FMK 2397 List 1. Follow the instructions
that are included to install the pole mounting bracket. Then mount the FRE-765 to the bracket. Do not install any
cabling until the FRE-765 is securely mounted.
When required, install the grommet into the base of the FRE-765 (see Figure 2, “Installing the Grommet,” on page
7) prior to performing any wiring. Table 7, “Grommet Hole Diameters,” on page 7 shows the wire gauges that you
can install through the holes in the grommet):
1Select only one concentric knockout hole on the FRE-765.
2Remove the largest knockout so that the entire hole is open.
3Install the grommet from the outside of the FRE-765. (Hint - Hold it at an angle to the hole and roll it into
position.)
4Ensure that the lip of the grommet rests on the bottom of the FRE-765 around the knockout hole.
5Use an appropriate tool to open the required hole(s) in the bottom of the grommet.
Figure 2. Installing the Grommet
Table 7. Grommet Hole Diameters
For this grommet hole size Use this cable
.410 to .765 in. diameter (two) *
(*) Recommend using one hole for both the HDSL and the bypass pairs (i.e., 6-pair cable) and using the second hole for POTS (subscriber)
lines.
•24 or 26 AWG, 25- or 50-pair Primary Interexchange Carrier (PIC) (filled or non-filled)
•22 AWG, 25-pair PIC (filled or non-filled)
•22, 24, or 26 AWG, 6- or 11-pair PIC (filled or non-filled)
.240 to .275 in. diameter (one) ground wire †
(†) Dependent upon gauge of wire used.
.155 to .240 in. diameter (one) ground wire
Grommet
FRE-765 enclosure
(bottom view)
Grommet lip

Functional Description SCP-FRE765-041-03H
8 January 6, 2003 FRE-765 List 4A
Chassis Ground Wiring
To install the chassis ground wire, follow the instructions below and refer to Figure 3, “Installing the Ground
Wire,” on page 8.
1Route the chassis ground wire through the small hole in the strain relief on the bottom of the enclosure.
2Connect one end of the chassis ground wire to the grounding bar.
3Connect the other end of the chassis ground wire to a suitable ground termination point (ground rod or cold
water pipe).
4Tighten the strain relief around the wire.
Figure 3. Installing the Ground Wire
HDSL, Auxiliary Power, Bypass Pair Wiring
When the system does not require any doublers, only two pair for HDSL transport are required between the COT
or Field Shelf and the FRE-765 RT Enclosure, see Figure 4, “COT or Field Shelf to FRE-765 RT Enclosure, No
Doublers,” on page 9.
Use 6 AWG wire to ensure a good ground connection to the FRE-765.
1 5
CHASSIS
GND
Ground Bar Ground Wire
Strain Relief
Ground Wire

SCP-FRE765-041-03H Functional Description
FRE-765 List 4A January 6, 2003 9
Figure 4. COT or Field Shelf to FRE-765 RT Enclosure, No Doublers
With one doubler, two HDSL pairs plus two power pairs are required between the COT or Field Shelf and the
FRE-765 RT Enclosure. These power pairs do not pass through the doubler, see Figure 5, “COT or Field Shelf to
FRE-765 RT Enclosure, 1 Doubler,” on page 9.
Figure 5. COT or Field Shelf to FRE-765 RT Enclosure, 1 Doubler
With two doublers, two HDSL pairs plus four power pairs are required between the COT or Field Shelf and the
FRE-765 RT Enclosure. The third and fourth power pairs are wired to the same terminations as the first and second
power pairs (respectively) on the COT or Field Shelf and the FRE-765 RT Enclosure. These power pairs do not
pass through the doublers, Figure 6, “COT or Field Shelf to FRE-765 RT Enclosure, 2 Doublers,” on page 9.
Figure 6. COT or Field Shelf to FRE-765 RT Enclosure, 2 Doublers
HDSL #1
HDSL #2
Power #1A
Power #1B
Power #2A
Power #2B
Bypass
FRE-765 List 4
A
RT Enclosure
HDSL #1
HDSL #2
Power #1
Power #2
Bypass
CO
T or Field
Shelf
Doubler
#1
HDSL #1
HDSL #2
Power #1A
Power #1B
Power #2A
Power #2B
Bypass
FRE-765 List 4
A
RT Enclosure
HDSL #1
HDSL #2
Power #1
Power #2
Bypass
COT or Field
Shelf
Doubler
#1
Doubler
#2
HDSL #1
HDSL #2
Power #1A
Power #1B
Power #2A
Power #2B
Bypass
FRE-765 List 4
A
RT Enclosure
HDSL #1
HDSL #2
Power #1
Power #2
Bypass
COT or Field
Shelf

Functional Description SCP-FRE765-041-03H
10 January 6, 2003 FRE-765 List 4A
HDSL Pairs
Use the following instructions to connect the HDSL pairs and see Figure 7, “Installing HDSL Lines,” on page 10.
1Route the HDSL pairs through the strain relief on the bottom of the enclosure.
2Terminate HDSL Pair #1 on the HDSL 1 terminations.
3Terminate HDSL Pair #2 on the HDSL 2 terminations.
4Secure with a cable tie to the bracket near the cable entrance.
Figure 7. Installing HDSL Lines
Table 8. HDSL, Metallic Bypass, and Auxiliary Power Line Unit Terminations
Backplane Connector Function
HDSL1 Tip and Ring terminations for HDSL Pair #1 from the COT. -130 Vdc is simplexed on this line for
powering the RT.
HDSL2 Tip and Ring terminations for HDSL Pair #2 from the COT. +130 Vdc is simplexed on this line for
powering the RT.
BYPASS Tip and Ring terminations for the metallic bypass pair to the COT.
PWR 1A Termination for auxiliary power pairs when using a doubler unit. Note: This line is simplexed with
+130 Vdc for powering the RT.
PWR 2A Termination for auxiliary power pairs when using a PG-Flex doubler unit. Note: This line is
simplexed with -130Vdc for powering the RT.
PWR 1B Termination for auxiliary power pairs when using two doubler units. This line is simplexed with
+130Vdc for powering the RT.
PWR 2B Termination for auxiliary power pairs when using two doubler units. This line is simplexed with
-130Vdc for powering the RT.
1
6
21
5
10
15
20
25
11
16
CHASSIS
GND
T
10
R
R
11
T
20
R
T
R
21
T
1
R
T
Grommet
HDSL,
Auxiliary Power,
B
y
pass Pairs
HDSL,
Auxiliary Power,
Bypass Pair
Terminations
PWR
1B
PWR
1A
BYPASS
PWR
2A
PWR
2B
HDSL
1
HDSL
2