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ADCP-61-558Issue 3, November 1997

2-42938-9914 Page 1© 1997, ADC Telecommunications, Inc.

Homeworx™ HFC Access PlatformHost Digital Terminal

CTSU Installation Instructions

Content Page

INTRODUCTION............................................................................ 1

Revision History........................................................................ 1

List of Changes ........................................................................1

Trademark Information ..................................................................1

Admonishments........................................................................ 2

1. DESCRIPTION .........................................................................2

2. INSTALLATION ........................................................................2

A. Remove HDT Front Cover .............................................................3

B. Remove Existing CTSU ...............................................................3

C. Install New CTSU.................................................................... 4

D. Install HDT Front Cover ............................................................... 6

3. OPERATION........................................................................... 7

4. SYSTEM INTEGRATION SERVICES......................................................... 7

5. CUSTOMER SUPPORT SERVICES.......................................................... 8

INTRODUCTION

This Installation Instruction provides the installation procedures for the CTSU plug-in unit as

used with the Homeworx HFC Access Platform HDT. The procedures in this instruction should

be used when replacing an existing CTSU with a new unit. For initial CTSU installation, refer to

either the DS1 HDT Installation Manual (ADCP-61-504) or the E1 HDT Installation Manual(ADCP-61-550).

Revision History

ISSUE DATE REASON FOR CHANGE

1 02/96 Original

2 05/97 Added step to protection switch unit before removing. Revised description of LED indicator operation.

3 11/97 Update System Integration Services and Customer Support Services information,as well as corporate address.

List of Changes

PAGE IDENTIFIER DESCRIPTION OF CHANGE

All — Issue 3

Trademark Information

Homeworx and OSWorx are trademarks of ADC Telecommunications, Inc.

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1997, ADC Telecommunications, Inc.

Admonishments

Important safety admonishments are used throughout this manual to warn of possible hazards to

persons or equipment. An admonishment identifies a possible hazard and then explains what may

happen if the hazard is not avoided. The admonishments — in the form of Dangers, Warnings,

and Cautions — must be followed at all times. These warnings are flagged by use of thetriangular alert icon (seen below), and are listed in descending order of severity of injury or

damage and likelihood of occurrence.

Danger: Danger is used to indicate the presence of a hazard that will cause severe

personal injury, death, or substantial property damage if the hazard is not avoided.

Warning: Warning is used to indicate the presence of a hazard that can cause severe

personal injury, death, or substantial property damage if the hazard is not avoided.

Caution: Caution is used to indicate the presence of a hazard that will or can cause

minor personal injury or property damage if the hazard is not avoided.

1. DESCRIPTION

1.01 The CTSU plug-in unit provides the clocking and time slot interchange functions for the

HDT. One CTSU provides the clocking functions required for normal system operation. A

second CTSU can also be installed and used as a back-up unit in case the first unit should fail.

There are two LEDs on the front of the CTSU.

Caution: Plug-in units can be damaged by static electrical discharge. Before handling

plug-in units, Electrostatic Discharge (ESD) protection must always be used. Store all

plug-in units that are not installed in the mounting shelf in anti-static packing material.

Always place plug-in units on an approved, electrically grounded anti-static mat.

2. INSTALLATION

2.01 Installation consists of removing the existing plug-in unit, unpacking and installing the

new plug-in unit in the HDT shelf, and then verifying that it is functioning properly.

Note: An active SCNU must be present in the HDT mounting shelf before a new or

replacement CTSU is installed. The LEDs on the CTSU will not respond as described inthis procedure if an active SCNU is not present.

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A. Remove HDT Front Cover

1. Release the latch on the right side of the HDT cover by pulling outward on the edge of

the latch. The latch is hinged at the left and swings outward.

2. With the right hand, hold the HDT cover against the HDT shelf.

3. With the left hand, release the left side latch by pulling outward on the edge of the latch.

4. Pivot the top edge of the cover forward approximately 40° and then lift it free of the

HDT shelf.

5. Place the cover where it will be protected from damage. If the installation includes more

than one HDT, the cover can be installed temporarily over the front cover of another HDT.

B. Remove Existing CTSU

Caution: If a protection CTSU plug-in is not present, removal of a CTSU from anoperating system will result in a service interruption.

1. If the CTSU to be removed is active, on-line, and installed in a protected configuration

(standby CTSU installed), use the OSWorx TL1 MICRO Manager software (V2

systems) or the EM Companion (TR-303, V5.2 systems) to protection switch to the

standby unit.

2. Slip on an ESD wrist strap and connect the ground wire to the ESD jack in the upper left

corner of the HDT shelf.

3. Locate the unit to be removed from the HDT mounting shelf.

Note: CTSU plug-in units can be removed and replaced without powering down or

reprovisioning the system. The provisioning data is retained by the SCNU which will

automatically re-provision a replacement plug-in unit. However, the CTSU and SCNU

should not be removed simultaneously or the provisioning data will be lost.

4. Release the lock tabs to free the upper and lower injectors/ejectors as shown in Figure 1.

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FAIL

ACTIVE

FAIL

ACTIVE

UPPER

INJECTOR/EJECTOR

LOCK TAB

LOCK TAB

LOWER

INJECTOR/EJECTOR

3490-B

Figure 1. Clock/Time Slot Interchange Unit (CTSU)

5. Pivot the injectors/ejectors outward to separate the unit connector from the backplane

connector.

6. Slide the unit outward until it is free of the HDT mounting shelf.

7. Place the plug-in unit in anti-static packing material or on a properly grounded anti-static mat.

C. Install New CTSU

1. Slip on an ESD wrist strap and connect the ground wire to the ESD jack in the upper left

corner of the HDT shelf.2. Remove the CTSU from its protective packing material.

3. Release the lock tabs (see Figure 1) on the CTSU to free the upper and lower

injector/ejectors.

4. Pivot the injector/ejectors outward so they point away from the CTSU.

5. Insert the CTSU into either slot A or B in the HDT shelf as shown in Figure 2.

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Figure 2. Location of CTSU in HDT Shelf

6. Continue inserting the CTSU into the shelf while pivoting the injectors/ejectors toward

the face plate. Press on the injector/ejectors until they touch the face plate and are locked

by the lock tabs.

7. Verify that the red FAIL LED is initially on after the unit is inserted. If the FAIL LED

is not on, wait 15 seconds, remove the CTSU, and then repeat steps 5 and 6. If the CTSU

still does not respond as described, the unit is defective. Replace the CTSU with another

unit and return the defective CTSU to ADC. (Refer to General Information at the back of

this manual.)

8. After 5 – 15 minutes, verify that the LEDs are either on or off as specified by the

following:

FAIL - Off.

ACTIVE - On (green) if unit is active or off if unit provides protection.

9. Do the LEDs appear as described?

If YES, the CTSU is properly installed and initialized.

If NO, refer to TAP-102 found in the HDT Installation Manual.

Note: The SCNU will automatically re-provision a replacement CTSU.

10. If you switched service to the standby CTSU before replacing this unit, you may switch

service back to this slot at this time.

11. Repeat procedure if a protection CTSU will be installed.

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D. Install HDT Front Cover

1. Locate the front cover (removed at beginning of this procedure) and open both the left

side and right side front cover latches.

2. Hold the cover vertically with the front facing outward and then tilt the top edge forwardapproximately 40°.

3. Position the tabs on the lower edge of the cover in the slots in the tab brackets at the

lower edge of the HDT shelf as shown in Figure 3.

3293-B

ESD JACK

LEFT COVER

BRACKET

HINGED

LATCHES

TABS

(BEHIND COVER)

TAB

BRACKETS

VERTICAL

CABLEGUIDE

Figure 3. HDT Front Cover Installation

4. While pushing downward, slide the cover from side-to-side until the tabs on the bottom

edge of the cover fully engage the slots in the tab brackets at the bottom edge of the

HDT shelf .

5. Pivot the cover to its vertical position against the HDT shelf.

6. Hold the cover against the HDT shelf and then close both the left and right side latches.

7. Check both sides of the cover to verify that they are secure. If not, release the latches and

repeat steps 4 – 6.

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3. OPERATION

3.01 Various LED indicators (see Figure 1) are provided on the CTSU front panel. Functional

descriptions of each indicator are provided in Table 1.

Table 1. CTSU Indicators and Descriptions

INDICATOR COLOR DESCRIPTION

FAIL Red

Off

Unit is initializing (following reset) or unit has failed.

No fail condition detected.

ACTIVE Green

Off

Unit is active.

Unit is initializing (following reset) or unit is inactive(protection configuration).

4. SYSTEM INTEGRATION SERVICES

4.01 ADC offers the following system integration services. For calls originating in the U.S.A.

or Canada, dial 1-800-366-3891, extension 2300. For calls originating outside the U.S.A. or

Canada, dial 612-946-2300.

Technical Assistance Center • Product Management• Project Engineering• Project Administration• Network Design• Broadband Design

(RF Design and Strand Mapping)

• Integration Network Testing• Network Monitoring(Upstream or Downstream)

• Power Monitoring• Remote Surveillance• System Turn-Up and Test• Service/Maintenance Agreements

Technical Training • Product Technology• Custom Designed Training

Technical Operations • Detail Engineering• End-to-End Installation• Drafting Services

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5. CUSTOMER SUPPORT SERVICES

5.01 ADC offers the following customer support services For calls originating in the U.S.A.

or Canada, dial 1-800-366-3891, extension 2300. For calls originating outside the U.S.A. or

Canada, dial 612-946-2300.

BCD Technical Assistance Center • Technical Information• System/Network Configuration• Quotation Proposals• Product Specification• Product Application

Field Service Engineering • Training• Installation and Operation Assistance• Troubleshooting and Repair• Field Assistance

Sales Administration • Ordering• Delivery

• General Product InformationProduct Return Department • ADC Return Authorization number and instructions

must be obtained before returning products.

5.02 Product information and service can also be obtained by writing ADC Telecommunications,

Inc., P.O. Box 1101, Minneapolis, Minnesota 55440-1101, U.S.A.

Reproduction of this document, in whole or in part, is strictly prohibited. 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.

This publication may be verified at any time by contacting ADC’s Technical Assistance Center at 1-800-366-3891,extension 2300 (in U.S.A. or Canada) or 612-946-2300 (outside U.S.A. and Canada), or by writing to ADC Telecommunications,

Inc., Attn: Technical Assistance Center, Mail Station #71, P.O. Box 1101, Minneapolis, MN 55440-1101, U.S.A.

© 1997, ADC Telecommunications, Inc.All Rights Reserved

Printed in U.S.A.

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