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Dantel 44020 Installation & Operation Manual

Dtmf decoder module

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About this Practice:
This document has been reissued to
• Renumber figures.
Reissued Practices: Updated and
new content can be identified by a
banner in the right margin.
Issue date: September 1998
Copyright 1998 by Dantel, Inc. • Dantel is a registered trademark of Dantel, Inc. • ISO 9001 Registered
44020 DTMF
D
ECODER
Table of Contents
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
Printed in the U.S.A.
I
& O
NSTALLATION
44020-0998 <90-00001>
M
ODULE
Technical Reference # TR-NWT-000870.
TM
M
PERATION
ANUAL

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Summary of Contents for Dantel 44020

  • Page 1 For more complete information on electrostatic discharge safety precautions, refer to Bellcore Technical Reference # TR-NWT-000870. Issue date: September 1998 Copyright 1998 by Dantel, Inc. • Dantel is a registered trademark of Dantel, Inc. • ISO 9001 Registered Printed in the U.S.A.
  • Page 2 ORDERING INFORMATION NOTE: 1-800-432-6835. OPTION NUMBER FEATURES A11-44020-00 DTMF (Dual Tone Multiple Frequency) Decoder A12-49018-00 Station Selector Subassembly GENERAL DESCRIPTION ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ . . . CONTINUED 44020-0998 <90-00001>...
  • Page 3 GENERAL DESCRIPTION ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ CIRCUIT DESCRIPTION ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ 44020-0998 <90-00001>...
  • Page 4 CIRCUIT DESCRIPTION . 1 - F , DTMF D UNCTIONAL CHEMATIC ECODER 44020-0998 <90-00001>...
  • Page 5 CIRCUIT DESCRIPTION Input Circuit Buffer Amplifier Dial Tone Reject Filter 44020-0998 <90-00001>...
  • Page 6 CIRCUIT DESCRIPTION High Frequency Reject Filter DTMF Receiver and Output Buffers Auxiliary Output and Latch Circuit Power-Up Clear Ringing Generator Control Circuit . . . CONTINUED 44020-0998 <90-00001>...
  • Page 7 CIRCUIT DESCRIPTION ♦ ♦ ♦ ♦ ♦ Internal Voltage Regulator 44020-0998 <90-00001>...
  • Page 8 APPLICATION INFORMATION ♦ ♦ ♦ ♦ 44020-0998 <90-00001>...
  • Page 9 APPLICATION INFORMATION . 2 - 440 C OMMUNICATION ANAGEMENT YSTEM PPLICATION LOCK IAGRAM 44020-0998 <90-00001>...
  • Page 10 INSTALLATION 1. Install the proper strap options. . 3 - 44020 DTMF D ECODER TRAP PTION OCATIONS +10DB -10DB 600 OHM BRDG OR A # OR C NORMAL REVERSE NOTE: The straps depicted in Fig. 2 are examples only. Strap each module per usage desired.
  • Page 11 INSTALLATION TRAP PTIONS Input Termination Input Level ♦ ♦ ♦ Dial Tone Filter Fourth Column Tones Auxiliary Outputs Latching Mode ♦ ♦ ♦ 44020-0998 <90-00001>...
  • Page 12 INSTALLATION A - 44020 DTMF D ABLE ECODER TRAP PTIONS OPTION INSTALL JUMPER INPUT INPUT LEVEL DIAL TONE FILTER DIALING AUXILIARY OUTPUTS * AND A LATCHING # AND C LATCHING 44020-00 DTMF DECODER -10V -20V 2. Wire the connector. INPUT LEVEL STROBE 3.
  • Page 13 INSTALLATION . 4 - 44020 DTMF D ECODER ODULE ESIGNATIONS DTMF Input B (2) DTMF Input C (4) A (1) D (8) Power-Up Clear Ouput Strobe Output -Battery (-21 to -56VDC) ** Ring Start Control Circuit # or C Output...
  • Page 14 INSTALLATION B - 44020 DTMF D ABLE ECODER HECKOUT ROCEDURE STEP ACTION RESULTS • • • • • • • • • • • • • . . . CONTINUED 44020-0998 <90-00001>...
  • Page 15 INSTALLATION ) - 44020 DTMF D ABLE CONTINUED ECODER HECKOUT ROCEDURE STEP ACTION RESULTS • • • • • • • • • • C - DTMF F BCD O ABLE REQUENCIES AND UTPUT ODES INPUT DTMF CODE FREQUENCIES (HZ)
  • Page 16 OPERATION 44020-0998 <90-00001>...
  • Page 17 TECHNICAL SPECIFICATIONS DESCRIPTION VALUE 44020-0998 <90-00001>...
  • Page 18 4. Connections between Dantel’s equipment and your equipment. 1-800-4DANTEL (1-800-432-6835). 1-800-4DANTEL Dantel, Inc. • 2991 North Argyle Avenue • Fresno, California 93727-1388 P.O. Box 55013 • Fresno, CA 93747-5013 Phone (209) 292-1111 Fax (209) 292-9355 http://www.dantel.com 44020-0998 <90-00001> 18 P AGES...

This manual is also suitable for:

A11-44020-00