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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

44214-0898 <90-00005>

44214

9600 BPS M

ODEM

About this Practice:

This practice has been reissued to:
• Update Figs. 1 and 3.

Issue date: August 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

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

Installation ............................................................................................  5

Operation ............................................................................................  10

Application Information .....................................................................  10

Technical Specifications .....................................................................  12

Warranty .............................................................................................  14

Содержание 44214

Страница 1: ...elds 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...

Страница 2: ...odule converts asynchronous data from a serial bit stream into voice frequency tone in one direction and tone to serial data in the other direction On the data side of the 44214 there are input output...

Страница 3: ...sition switch S3 is used to enable or disable the analog side A second two position switch S5 is used to enable or disable the digital side Modem Controller The modem controller provides all the modem...

Страница 4: ...ugh the front panel S1 S3 S4 S5 R44 R53 S4 5VDC JP4 JP5 RTS DTR INTERFACE ENABLE JP1 S6 T O JP2 TTL CMOS SIGNAL GROUND RS 232 RS 422 DTR RTS TD RD CD CTS DSR TD DTR CTS RTS CD RD DSR TX TX RTS RTS CD...

Страница 5: ...0dBm and 0dBm INSTALLATION Installation consists of setting the switch and strap settings wiring the pin connectors installing the module in the shelf and checking out the module 1 Set the switch and...

Страница 6: ...module be removed from the shelf or replaced in the shelf remove power from the entire shelf RTS DTR Remove power and set JP4 to ACT Replace the module and restore power The front panel DTR LED will i...

Страница 7: ...s character back FINAL CHECK OUT For the two modems to communicate with each other one must be set to ORG mode and the other to ANS These switches are on the front panel of each unit Make sure that th...

Страница 8: ...Disable digital loopback RS 232 I O Port enabled TTL CMOS I O Port enabled RS 422 I O Port enabled RS 485 I O Port enabled 4 Wire operation 2 Wire operation NOTE Enable only one I O port at a time JP4...

Страница 9: ...LB TTL 4 Wire RCV or 2 Wire XMT RCV 4 Wire RCV or 2 Wire XMT RCV 4 Wire XMT 4 Wire XMT 21 to 56 VDC DTR TTL RTS TTL RD TTL TD TTL CTS TTL CD TTL Signal Ground DSR TTL TD RS 232 DTR RS 232 RTS RS 232 G...

Страница 10: ...214 9600 bps Modem consists of observing the front panel LEDs Six green LEDs on the 44214 front panel indicate TD Transmit Data RD Receive Data RTS Request To Send CD Carrier Detect DTR Data Terminal...

Страница 11: ...S DEDICATED COPPER PAIR REMOTE LOCATION LOCAL MONITORING AND CONTROL DISCRETE ALARM POINTS FIG 6 EXAMPLE APPLICATION 2 41096 01 41096 01 MASTER CALLING TERMINAL DATA CIRCUIT REMOTE CALLED TERMINAL FIB...

Страница 12: ...Resistance RS 422 RS 485 Receivers Differential Input Common Mode Input Drivers Differential Output Short Circuit Current ALB DLB Inputs Operating Voltage Usable Voltage VALUE 21 to 56 VDC 114 mA 100...

Страница 13: ...ud Symbol Sec Bits Per Symbol Data TCM Constellation Points 9600 V 32 9600 QAM 1800 2400 4 0 16 7200 V 32 TCM TCM 1800 2400 3 1 16 4800 V 32 4800 QAM 1800 2400 2 1 4 2400 V 22 BIS 2400 QAM 1200 2400 6...

Страница 14: ...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...

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