Dantel 44124 Скачать руководство пользователя страница 1

CAUTION

Install or remove modules from the shelf only when the power is off.

If you install a module in the shelf with the power on, the internal
circuitry may suffer damage and the product warranty will be void.

Remove and install circuit boards only in a static-safe environment

(use antistatic wrist straps, smocks, footwear, etc.).

Keep circuit boards in their antistatic bags when they are not in use.

Do not ship or store circuit boards near strong electrostatic, electromag-

netic, magnetic, or radioactive fields.

For more complete information on electrostatic discharge safety

precautions, refer to Bellcore

TM

 Technical Reference # TR-NWT-000870.

Copyright 1998 by Dantel, Inc. • Dantel is a registered trademark of Dantel, Inc. • ISO 9001 Registered

Printed in the U.S.A.

I

NSTALLATION

 & O

PERATION

 M

ANUAL

44124-0798 <90-00024>

44124

D

ATA

 C

HANNEL

TERMINATION

 M

ODULE

About this Practice:

This practice has been reissued to:
• Update Fig. 3.

Issue date:  July 1998

Reissued Practices: Updated and
new content can be identified by a
banner in the right margin.

UPDATED

Table of Contents

Ordering Information ...........................................................................  2

General Description ..............................................................................  2

Application Information .......................................................................  2

Circuit Description ...............................................................................  3

Installation ............................................................................................  6

Operation ............................................................................................  14

Technical Specifications .....................................................................  15

Warranty .............................................................................................  16

Содержание 44124

Страница 1: ...For more complete information on electrostatic discharge safety precautions refer to BellcoreTM Technical Reference TR NWT 000870 Copyright 1998 by Dantel Inc Dantel is a registered trademark of Dant...

Страница 2: ...equal ization control are required The 44124 DCTM provides Data channel line conditioning that includes Impedance matching Selectable gain and attenuation control Adjustable 309B type post equalizati...

Страница 3: ...xed at 600 ohms Input Equalizer Circuit The input equalizer circuit receives an incoming signal from the impedance matching transformer T1 The circuit adjusts slope bandwidth and amplitude before the...

Страница 4: ...OR CONTROL ACCUMULATIVE SETTINGS INPUT AMPLIFIER CIRCUIT ACCUMULATIVE SETTINGS OUTPUT AMPLIFIER ACCUMULATIVE SETTINGS K1 LOOPBACK RELAYS S8 SLOPE S7 BANDWIDTH S7 AMPLIFIER HT S12 LOOPBACK LEVEL S11 dB...

Страница 5: ...8 seconds Tone detection provides remote testing of the facility and its active components A guard circuit prevents signal frequencies near 2713 Hz from enabling the loopback feature Set switch S12 3...

Страница 6: ...ates improper switching or reversed simplex lead polarity Set simplex lead polarity with switch S5 Regulated Power Supply The regulated power supply furnishes all 44124 DCTM power requirements It supp...

Страница 7: ...T e r i W r u o F 0 1 S 0 1 S W 2 W 4 k c a b p o o L z H 3 1 7 2 e l b a n E e l b a s i D 2 2 1 S 2 2 1 S D T D t u o e m i T k c a b p o o L z H 3 1 7 2 s e t u n i M 4 s e t u n i M 0 2 1 2 1 S 1...

Страница 8: ...a u q E t c e l e S d e d a o L d e d a o l n o N 1 8 S 1 8 S L N n i a G l e v e L t u p n I t c e l e S s s o L n i a G s s o L 3 1 S 3 1 S G L l e v e L t u p n I e v i t a l u m u c c a B d f f o...

Страница 9: ...9 8 7 6 5 4 3 2 1 CIRCUIT SIDE OF PC BOARD COMPONENT SIDE OF PC BOARD RCV Input Drop Side TIP A T2 Simplex RCV Input Drop Side RING XMT Output Line Side TIP SX1 XMT Output Line Side RING 21 to 56 VDC...

Страница 10: ...the cable If the LF slope is equal to or greater than 3 0 dB set S8 1 ON nonloaded cable Set LF slope SL settings of switches S8 2 to S8 5 using the Nonloaded Cable column of Table B If the LF slope...

Страница 11: ...using INSTALLATION TABLE B LF SLOPE SL SETTINGS FOR LOADED AND NONLOADED CABLES NOTE If the calculated values of Slope SL fall between settings use the lower setting indicated by the table LOSS AT 100...

Страница 12: ...1 75 2 45 3 15 3 85 4 55 5 25 5 95 6 65 7 35 8 05 8 75 9 45 10 15 Reference Total OFF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 S7 1 1 OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON S7 2 2 OFF OFF...

Страница 13: ...ed by the table Reference Total 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 S7 5 1 OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON S7 6 2 OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON S7 7...

Страница 14: ...52 1 67 1 82 1 98 2 13 2 28 7 0 23 0 46 0 69 0 92 1 15 1 38 1 61 1 84 2 07 2 30 2 53 2 76 2 99 3 22 3 45 8 0 27 0 55 0 82 1 09 1 37 1 64 1 91 2 19 2 46 2 73 3 01 3 28 3 55 3 83 4 10 9 0 30 0 60 0 90 1...

Страница 15: ...i l a e s r H u t B 8 4 r H u t B 3 2 1 e v i t c A k c a b p o o L g n i e b t n e r r u c g n i l a e s o n d e t a r e n e g r H u t B 4 5 r H u t B 0 4 1 n i a G B d 4 2 n o i t a z i l a u q E 6...

Страница 16: ...n instrument signed by a duly authorized officer of the Seller and accepted by the Buyer Warranty and remedies on products not manufactured by the Seller are in accordance with warranty of the respect...

Отзывы: