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Multi-Tech Systems MT202TD 1200 - page 1
Model MT202TD 1200 BPS Leased Line Modem User Guide ...
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Multi-Tech Systems MT202TD 1200 - page 2
User Guide MT202TD P/N 82096502 Revision C COPYRIGHT This publication may not be reproduced, in whole or in part, without prior expressed written permission from Multi-T ech Systems, Inc. All rights reserved. Copyright © 2000-2003, by Multi-T ech Systems, Inc. Multi-T ech Systems, Inc. makes no representations or warranties with respect to the con ...
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Multi-Tech Systems MT202TD 1200 - page 3
Contents Chapter 1 - Introduction and Description ......................... 5 Introduction ........................................................................... 5 Description ............................................................................ 5 T echnical Specifications ........................................................ 6 Chapt ...
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Multi-Tech Systems MT202TD 1200 - page 4
Chapter 4 - W arranty , Service, and T echnical Support ................................................ 20 Limited W arranty ................................................................. 20 Online W arranty Registration .............................................. 20 Service ................................................................... ...
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Multi-Tech Systems MT202TD 1200 - page 5
Chapter 1 - Introduction & Description 5 Chapter 1 - Introduction and Description Introduction This manual provides instruction for installing, cabling, operating, and troubleshooting Multi-T ech System’ s model MT202TD 1200 bps modem. Description The MT202TD is a low speed asynchronous modem which employs Frequency Shift Keyed (FSK) modulati ...
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Multi-Tech Systems MT202TD 1200 - page 6
MT202TD User Guide 6 Technical Specifications Y our MT202TD modem meets the specifications listed below: Model Number MT202TD Data Rate 0–1200 bps Compatibility Western Electric 202 and 202T Data Sets, 202C, 202D, 202E, 202R models Mode of Operation 2-wire half duplex or 4-wire full duplex Line Requirements 2- or 4-wire leased line unconditioned ...
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Multi-Tech Systems MT202TD 1200 - page 7
Chapter 1 - Introduction & Description 7 Interface EIA RS-232C / ITU-T V .24 Connectors One DB-25 RS-232 C connector (25-pin female connector), external power transformer , RJ1 1 line jack Diagnostics Analog loopback and digital loopback Indicators LEDs for T ransmit Data, Receive Data, Carrier Detect, Clear to Send, Request to Send, Data Set R ...
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Multi-Tech Systems MT202TD 1200 - page 8
MT202TD User Guide 8 Chapter 2 - Installation and Connection Introduction The installation of the MT202TD consists of setting DIP switches to the appropriate settings and then making the serial, phone line, and electrical power connections. Power Power is supplied to model MT202TD through an AC power transformer . The transformer supplies low volta ...
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Multi-Tech Systems MT202TD 1200 - page 9
Chapter 2 - Installation & Connection 9 Unpacking the Modem Remove all items from the box. Figure 2-1. Unpacking the MT202TD The packing box contains the following items: l One MT202TD modem l One MT202TD User Guide l One power transformer l One RJ1 1/RJ1 1 cable l One RJ1 1/RJ48 cable If any of these items are missing, please contact Multi-T e ...
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Multi-Tech Systems MT202TD 1200 - page 10
MT202TD User Guide 10 Modem LED Indicators Figure 2-2. LED Display The MT202TD has seven diagnostic LED indicators. They are: TD T ransmit Data - This LED blinks when data is being transmitted: on for a space; off for a mark. The state of this LED matches the TD circuit on Pin 2 of the RS- 232C/V .24 interface. RD Receive Data - This LED blinks whe ...
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Multi-Tech Systems MT202TD 1200 - page 11
Chapter 2 - Installation & Connection 11 Controls on PC Board The MT202TD circuitry is on a single printed circuit (PC) board. This board contains one 8-position DIP switch (numbered 1-8), an analog loopback test switch, and a digital loopback test switch. The factory default setting is for 4-wire, full-duplex operation in normal mode. If you a ...
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Multi-Tech Systems MT202TD 1200 - page 12
MT202TD User Guide 12 Computer or Terminal Connections Y our computer or terminal is connected to the MT202TD via the modem’s EIA RS-232C / ITU-T V .24 interface connector . This connector is a standard interface, with a 25-socket female connection. Therefore, your computer or terminal requires a standard RS-232C / V .24 cable with a male connect ...
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Multi-Tech Systems MT202TD 1200 - page 13
Chapter 2 - Installation & Connection 13 MT202TD RS-232 Signal Descriptions Pin MTS Circuits Function Signal Name EIA ITU-T Source 2 SD BA 10 3 T ransmitted Data DTE 3 RD BB 10 4 Received Data DCE 4 RTS C A 10 5 Request to Send DTE 5 CTS CB 106 Clear to SendDCE 6 DSR CC 1 07 Data Set Ready DCE 7 SG A B 102 Signal Ground ----- 8 CD CF 109 Data C ...
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Multi-Tech Systems MT202TD 1200 - page 14
MT202TD User Guide 14 Modem and Phone Line Connection This section describes how to install and connect the MT202TD. Installation Steps: 1. V erify that the remote modem is set for Bell 202- or 202T - compatibility . 2. Connect the modem to the leased line jack using one of the two RJ1 1 cables provided with the modem. 3. Remove the case (see the n ...
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Multi-Tech Systems MT202TD 1200 - page 15
Chapter 2 - Installation & Connection 15 DIP Switch Settings DIP switches are located on the MT202TD circuit board as shown in Figure 2-3. For information about DIP switch settings and functions, refer to the chart on page 19. T o access the switches, remove the modem’ s cover . T o remove the cover: 1. Unplug the power transformer from the w ...
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Multi-Tech Systems MT202TD 1200 - page 16
MT202TD User Guide 16 DIP Switch and Switch Settings & Functions (See Figure 2–3.) Switch Function Position 1 Local Copy Enable UP* Local Copy Suppress DOWN 2 T wo-Wire Lease Line DOWN Four-Wire Lease Line UP* 3 T wo-Wire Lease Line DOWN Four-Wire Lease Line UP* 4 T wo-Wire Lease Line UP Four-Wire Lease Line DOWN* 5 T ransmit 0 dBm DOWN* T ra ...
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Multi-Tech Systems MT202TD 1200 - page 17
Chapter 2 - Installation & Connection 17 Leased Line Connections The MT202TD modem operates on leased lines and may be configured in two ways: two-wire or four-wire. In a leased-line application, the line is continuously connected to the modem. In two-wire leased-line applications, only one modem may transmit at a time (this is known as half- d ...
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Multi-Tech Systems MT202TD 1200 - page 18
MT202TD User Guide 18 Chapter 3 - Modem T esting Introduction The MT202TD has two diagnostic tests: Local analog loopback and digital loopback. A loopback test involves entering data from your PC and looping that data through the circuits of your modem and/or a remote modem. When the loop has been completed, the data received on the monitor should ...
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Multi-Tech Systems MT202TD 1200 - page 19
19 Chapter 3 - Modem T esting 2 for DIP switch setting information). Computer or T er minal Local MultiModem Digital Analog CONNECT UUUUUUUU UUUU Figure 3-3. Local Analog Loopback T est Digital Loopback Test The digital loopback test is an on-line test that loops data sent from one modem across the phone line to another modem, and then back to the ...
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Multi-Tech Systems MT202TD 1200 - page 20
MT202TD User Guide 20 Chapter 4 - W arranty , Service, and T echnical Support Limited Warranty Multi-T ech Systems, Inc., (hereafter MTS) warrants that this product will be free from defects in material or workmanship for a period of two years from date of purchase, or if proof of purchase is not provided, two years from date of shipment. MTS MAKES ...
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Multi-Tech Systems MT202TD 1200 - page 21
21 Chapter 4 - Warranty , Service & T echnical Support Service In the event that service is required, products may be shipped, freight prepaid, to our Mounds V iew , Minnesota, factory . Please send modems that require repairs to the following address: Multi-T ech Systems, Inc. 2205 W oodale Drive Mounds View , MN 551 12 Attn: Repairs, Serial # ...
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Multi-Tech Systems MT202TD 1200 - page 22
MT202TD User Guide 22 Technical Support Multi-T ech Systems has an excellent staf f of technical support personnel available to help you get the most out of your Multi- T ech product. If you have any questions about the operation of this modem, please contact us at: Email: Phone: support@multitech.com (800) 972-2439 or (763) 785-3500 (local) Intern ...
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Multi-Tech Systems MT202TD 1200 - page 23
Appendix 23 Appendix - Regulatory Compliance FCC Part 15 – Class A Statement This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial e ...
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Multi-Tech Systems MT202TD 1200 - page 24
MT202TD User Guide 24 FCC Part 68 Telecom 1. This equipment complies with part 68 of the Federal Communications Commission Rules. On the outside surface of this equipment is a label that contains, among other information, the FCC registration number . This information must be provided to the telephone company . 2. The suitable USOC jack (Universal ...
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Multi-Tech Systems MT202TD 1200 - page 25
Appendix 25 6. The telephone company may make changes in its facilities, equipment, operations, or procedures that could af fect the operation of the equipment. If this happens, the telephone company will provide advance notice in order for you to make necessary modifications in order to maintain uninterrupted service. 7. If trouble is experienced ...
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Multi-Tech Systems MT202TD 1200 - page 26
26 MT202TD User Guide Index A Analog Loopback 18 B Back Panel Connectors 14, 15 C Carrier Detect (CD) 10 Carrier Frequencies 6, 7 CCITT V .24 Interface Connector 12 Clear to Send (CTS) 10 Compatibility 6 Computer Connections 12 Controls 7 D Data Rates 6 Data Set Ready (DSR) 10 Dimensions MT202T -D 7 DIP Switch Functions 16 DIP Switch Settings 15 F ...
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Multi-Tech Systems MT202TD 1200 - page 27
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Multi-Tech Systems MT202TD 1200 - page 28
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