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Section 365–336–202

Equipment Issue 2

Second Printing, January 2001

Telecommunications Group

2001 Charles Industries Ltd.

CLEI is a trademark of Bell Communications Research, Inc.
All rights reserved. Printed in United States of America.
The availability of features and technical specifications herein subject to change without notice.

Page 1 of 12

3653–36 4W Transmission Only with Extended Range and

Loopback (4W TO/ER/LB) Channel Unit

CONTENTS

PAGE

Part 1.

GENERAL

2

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Part 2.

INSPECTION

2

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Part 3.

APPLICATION GUIDELINES

3

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Part 4.

CIRCUIT DESCRIPTION

3

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Part 5.

MOUNTING

5

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Part 6.

INSTALLER CONNECTIONS

6

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Part 7.

OPTIONS

6

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Part 8.

ALIGNMENT

8

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Part 9.

TESTING

10

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Part 10.

TECHNICAL ASSISTANCE

10

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Part 11.

WARRANTY & CUSTOMER SERVICE

10

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Part 12.

SPECIFICATIONS

11

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T

&

R

T1

&

R1

DROP

3653-36

MLB

LINE

DROP

LB

4W

TO/ER/LB

ISS 2

PUSH ON

PUSH OFF

LINE

Figure 1.  3653–36 Front Panel

Содержание 3653-36

Страница 1: ...otice Page 1 of 12 3653 36 4W Transmission Only with Extended Range and Loopback 4W TO ER LB Channel Unit CONTENTS PAGE Part 1 GENERAL 2 Part 2 INSPECTION 2 Part 3 APPLICATION GUIDELINES 3 Part 4 CIRC...

Страница 2: ...es selectable tone loopback disable Prescription adjustable loopback level of up to 31 5dB of gain attenuation in 0 5dB increments Front panel manual loopback switch Front panel mounted bantam jacks f...

Страница 3: ...4 CIRCUIT DESCRIPTION Refer to Figure 3 the 3653 36 block diagram as needed while reading the following circuit description 4 1 Transmit VF Path VF signals applied to the input T R pins 50 and 48 are...

Страница 4: ...s dc sealing current sustains the normal resistance of the cable pairs and prevents degradation of transmission performance In the LP Loop position the simplex leads of T1 and T2 are shorted together...

Страница 5: ...mentarily operated 4 6 7 5 6 Bit or 8 Bit Encoding Decoding The 3653 36 provides 7 5 6 bit or 8 bit encoding and decoding schemes for the transmit and receive paths to from the facility The 7 5 6 bit...

Страница 6: ...d S7 ELL GAIN ATTN Equal Level Loopback Prescription Gain Attenuation Switch S6 is a 6 section DIP switch that provides up to 31 5dB of equal level loopback in 0 5dB steps S7 is a two position slide s...

Страница 7: ...ansmit Alignment in Part 8 Switches S2 and S3 form a 9 section DIP switch that provides up to 32 5dB of attenuation in 0 1dB steps for adjusting the transmit path to the proper operating level at the...

Страница 8: ...t be obtained XMT ATTN TLP 19 5 Use Table 2 for common TLP values For example for a 0 db transmit TLP set the sum of S2 and S3 to 19 5 by placing the switch sections shown be low in the ON position 2...

Страница 9: ...nsmit TLP Values Desired TLP Set S3 S2 Desired TLP Set S3 S2 13 12 11 10 9 8 7 6 5 4 3 2 1 0 5 0 0 5 1 2 32 5 31 5 30 5 29 5 28 5 27 5 26 5 25 5 24 5 23 5 22 5 21 5 20 5 20 19 5 19 18 5 17 5 3 4 5 6 7...

Страница 10: ...act Charles Industries Ltd for replacement or repair instructions or follow the Repair Service Procedure below 11 3 Advanced Replacement Service In Warranty Units Charles Industries Ltd offers an adva...

Страница 11: ...Underwriters Laboratories Standard 1459 Second Edition Compliance is re stricted to inside plant wiring Field repairs may void compliance b FCC P 15 Class A c Meets Canadian CSA and DOC requirements...

Страница 12: ...back l DETECTOR FREQUENCY Will detect within 2713 7Hz will not detect outside of 2713 35Hz m DETECTOR AMPLITUDE Will detect 0 0 to 30dBm0 will not detect less than 40dBm0 n DETECTOR TIMING Activate 2...

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