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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

44202-0898 <90-00004>

44202

202 C

OMPATIBLE

M

ODEM

About this Practice:

This practice has been reissued to:
• Replace modem alignment

procedure and Table C, in 

Installa-

tion section, with new procedure.

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 ................................................................................  2
Application Information .........................................................................  5
Installation ............................................................................................  6
Operation .............................................................................................  12
Technical Specifications.......................................................................  14
Warranty .............................................................................................  16

44202-00

202 MODEM

A11-44202-00 REV__

ON

TEST

MON

XMT

4W

2W

LINE

MON

LINE

ON

ABL

ON

DLB

TD

RD

RTS

CD

DTR

CTS

XMT

LEVEL

RCV

GND

RCV

Summary of Contents for 44202

Page 1: ...chnical 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 INSTALLATION OPERATION MANUAL 44202 0898 90 00004 4...

Page 2: ...Bell type 202 4 wire or 103 2 or 4 wire data communications between distant digital equipment locations It also provides on board loop back testing and multiple data interface inputs The 44202 is a p...

Page 3: ...VDC I O LOGIC 18 19 21 22 17 5 VDC S5 MODEM CONFIGURATION SELECT XTAL XMT LEVEL 5 VDC MASTER SLAVE XMT RCV LEVEL MASTER SLAVE RCV REGULATED POWER SUPPLY 5 VDC SOURCE 5 VDC SOURCE 12 VDC SOURCE 12 VDC...

Page 4: ...tions The facility side is accessed using edge connector pins or by front panel jacks normal through and monitor Amplifiers The transmit and receive amplifiers are place in the facility side circuitry...

Page 5: ...powered modem exists The 44202 does not need to be interfaced with another 44202 It can be interfaced to any modem operating under one of the following standards Bell 202 4 wire only Bell 103 2 or 4 w...

Page 6: ...r recessed front panel slide switches Refer to Fig 3 and Tables A and B 46028 Control Point Module 49008 RS 485 Subass y 44202 202 Compatible Modem 46022 20 Multiple Alarm Combiner 49013 202 Tone Mode...

Page 7: ...80 ohm termination at 422 Request To Send input No termination at 485 Transmit Data input 180 ohm termination at 485 Transmit Data input Modem is selected as transmit master for use in summing and dis...

Page 8: ...FF S5 5 ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF DESCRIPTION Bell 103 Originate 300 bps Full Duplex Bell 103 Answer 300 bps Full Duplex Bell 202 1200 bp...

Page 9: ...17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 CIRCUIT SIDE OF PC BOARD COMPONENT SIDE OF PC BOARD Dist Out Sum In ALB DLB 4W RCV 600 ohm 2W XMT RCV 4W RCV 600 ohm 2W XMT RCV 4W XMT 600 ohm 4W XMT 600 ohm...

Page 10: ...Set TMS to the XMT LINE jack on the front panel Configure the TMS for 600 ohm terminated measurment A db meter can be used to make a bridged measure ment by connecting to the XMT MON jack NOTE The XM...

Page 11: ...e data level tone Place the TEST switch in the OFF position 9 This completes the modem alignment Analog Loopback Test 1 Action Place the ALB analog loopback switch and the TEST switch in the ON positi...

Page 12: ...cate TD Transmit Data RD Receive Data RTS Ready To Send CD Carrier Detect DTR Data Terminal Ready CTS Clear To Send Each of the LEDs operates when the modem s activity is appropri ate to the LED s des...

Page 13: ...nd Potentiometers Two 2 front panel test points are used in conjunction with the front panel potentiometer labeled RCV LEVEL The test points are labeled RCV GND They provide a means of adjusting the r...

Page 14: ...e ALB AND DLB INPUTS OperatingVoltage DisableVoltage PHYSICAL FEATURES Weight Dimensions OperatingTemperatureRange VALUES 21 to 56 VDC 21 VDC 24 VDC 48 VDC 56 VDC 120 mA 105 mA 75 mA 70 mA 135 mA 120...

Page 15: ...44202 0898 90 00004 PAGE 15 NOTES...

Page 16: ...ritten 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 re...

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