Synxcom SM19202FP User manual

User’s Manual
For Models
SM19202FP, SM19202FP-K
SM96202FP, SM96202FP-K
Fast Poll Modems
Document Number 520-01014-001 Rev. C

Copyright © 2012 Synxcom, Incorporated.
All Rights Reserved.
Web site: www.synxcom.com
The products and programs described in this User’s Manual are licensed products of Synxcom Inc.
This User’s Manual contains proprietary information protected by copyright, and this User’s Guide and
all accompanying hardware and documentation are copyrighted.
Synxcom Inc. does not warrant that the product will work in all environments and applications, and
makes no warranty and representation, either implied or expressed, with respect to the quality,
performance, merchantability, or fitness for a particular purpose.
Information in this User’s Guide is subject to change without notice and does not represent a
commitment on the part of Synxcom Inc. Synxcom Inc. assumes no responsibility for any
inaccuracies that may be contained in this User’s Manual.
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SM19202FP Fast Poll Modem User’s Manual
520-01014-001 Rev. C
March 15, 2012

iii User’s Manual - SM19202 Fast Poll Modem
Contents
Chapter 1 Introduction ............................................................................................ 6
Features....................................................................................................................7
Applications...............................................................................................................8
Chapter 2 Installation.............................................................................................. 9
Unpacking Your Hardware.........................................................................................9
Additional Items You Need to Complete Your Installation..........................................9
Hardware Overview.................................................................................................10
Front View...............................................................................................................10
Back View................................................................................................................10
Rack-Mount View.....................................................................................................11
Installation Summary...............................................................................................11
Configuring the Stand-alone Modem........................................................................12
Setting the DIP Switches .........................................................................................14
S1-1, S1-2, S1-3 −Modem Data Rate................................................................15
S1-4 −Async Character (Fast-Poll Mode Only)..................................................16
S1-5 −Auto RTS................................................................................................16
S1-6 −Transmit Carrier Control (For SM19202FP-K only)...............................16
S1-7 −2-/4-Wire Leased Line Operation............................................................17
S1-8 −Transmitter Impedance...........................................................................17
S1-9 −Remote Loopback Enable ......................................................................18
S1-10 −Reserved (Test Only)............................................................................18
S2-1 through S2-3 −Transmit Level...................................................................18
S2-4 −Receiver Dynamic Range.......................................................................19
S2-5 and S2-6 −Cable Equalizer (Fast-Poll Mode Only)....................................19
S2-7 −Anti-streaming ........................................................................................19
S2-8 −RTS-CTS Delay (Bell 202 Mode Only)....................................................19
S2- 9−Forced RTS ON (Constant RTS) ...........................................................20
S2- 10−Re-Train Request Enabled.........................................................................20
S3- 1 and S3-2−RS-232 or RS-485 Interface Select..............................................20
S3-3 RS-485 Receiver Termination........................................................................21
S3-4- Not Used..................................................................................................21
S-3-5 Leased Line Receiver Termination...........................................................21
S3-6- Common Signal Ground and Chassis Ground .........................................21
Configuring the Jumper Blocks................................................................................21
For Stand-alone Units........................................................................................21
For Rack-Mount Plug-in Modules.......................................................................21

Contents
iv User’s Manual - SM19202 Fast Poll Modem
Connecting to a Transmission Line..........................................................................22
Connecting to a Voltage Source ..............................................................................23
Connecting to an RS-232 Device.............................................................................24
Connecting to an RS-485 Device.............................................................................24
LEDs........................................................................................................................26
Loopback Control Switch.........................................................................................26
Appendix A Troubleshooting................................................................................ 28
Problem Solving ......................................................................................................28
Appendix B Specifications ................................................................................... 29
General Specifications.............................................................................................29
Mechanical Specifications........................................................................................30
Interface Connector Pin Assignments......................................................................30
RS-232 (DTE) Interface...........................................................................................31
RS-485 (DTE) Interface...........................................................................................31
Environmental Specifications...................................................................................31
Appendix C Limited Product Warranty................................................................ 32
Appendix D RMA Procedure................................................................................. 33

Contents
v User’s Manual - SM19202 Fast Poll Modem
Figures
Figure 1-1. Point-to-Point Network Using the SM19202FP Modem.......................................8
Figure 1-2. Multipoint Polling Network Using the SM19202FP Modem..................................8
Figure 2-1. Front View of the SM19202FP Modem..............................................................10
Figure 2-2. Back View of SM19202FP Modem....................................................................10
Figure 2-3. Rack-Mount Module for the SM19202FP-RM Modem Board.............................11
Figure 2-4. SM19202 Fast-Poll Stand-alone Modem Switches............................................13
Figure 2-5. SM19202 Fast-Poll Rack-mount Modem Board.................................................14
Figure 2-6. SM19202FP Modem Transmission Line Interface.............................................22
Figure 2-7. Pin Locations on the Modem’s RJ-11C Jack.....................................................24
Figure 2-8. Loopback Diagnostic Modes .............................................................................27
Figure 2-9. Back-to-Back Connection to a Second Modem .................................................30
Tables
Table 2-1. Modem Switch Settings......................................................................................14
Table 2-2. Modem Operating Speed ...................................................................................16
Table 2-3. Transmit Levels..................................................................................................18
Table 2-4. Transmission Line Connector Pin Assignments..................................................22
Table 2-5. RJ-11C Modular Jack Pin Assignments..............................................................24
Table 2-6. Modem LEDs .....................................................................................................26
Table A-1 Problem Solving.................................................................................................28
Table B-1. Leased Line Terminal Block Pin Assignments....................................................30
Table B-2. RS-232 (DTE) Interface .....................................................................................31
Table B-3. RS-485 (DTE) Interface .....................................................................................31

6 User’s Manual - SM19202 Fast Poll Modem
Chapter 1
Introduction
Thank you for purchasing Synxcom’s SM19202FP fast poll modem, the finest industrial-
grade fast-poll modem available.
The Synxcom modem is a 19200/9600/4800/2400/1200 bps modem designed for 4-wire,
full-duplex or 2-wire, half-duplex operation over a voice-band leased line or private line. The
modem is designed utilizing the latest digital-signal processing (DSP) technology to achieve
high performance. The modem employs efficient modulation and encoding scheme to
achieve fast modem training time. The modem is also backward compatible with Bell 202
and ITU-T V.23 modems.
The SM19202FP is the most technologically advanced modem on the market. Boasting a
fast DSP processor and automatic adaptive equalizer, the SM19202FP modem is ideally
suited for multi-point communication systems that require fast response time, short training
time, and low throughput delay.
This User’s Guide describes the SM19202FP (AC-powered) and SM19202FP-DC (DC-
powered) stand-alone modems, as well as the rack-mount SM19202FP-RM plug-in module
for the Motorola/UDS RM16M. This manual is designed to get your modem “up and running”
as quickly as possible. It contains all the information you need to configure and install your
modem. It also contains troubleshooting information in the unlikely event you encounter a
problem with your modem.

Introduction
7 User’s Manual - SM19202 Fast Poll Modem
Features
The SM19202FP modem is specifically designed for harsh environments typically
associated in utility substations and industrial facilities. Though functionally similar to
commercial modems, the SM19202FP provides the following unique features that make it
well suited for utility and industrial applications.
Packaged in a rugged, compact enclosure for industrial applications.
Leased-line interface protected with heavy-duty surge protection devices.
Built-in hardware watchdog timer for software lock-up prevention without requiring
human intervention, making it ideal for unmanned locations.
Works within an extended temperature range of -40ºC to +85ºC.
Designed with coupling transformers for high-voltage isolation and common mode
noise rejection in industrial and commercial environments.
Operate over voice-band conditioned or unconditioned leased-line and pilot wires.
Accepts power from a wide range of AC and DC power supplies:
– SM19202FP: 90 to 265 VAC or 100 to 400 VDC
– SM19202FP-DC: 10 to 60 VDC
– SM19202FP-RM: Plug-in module for the Motorola/UDS RM16M modem nest
Standard industrial connectors for data, analog, and power interfaces allow reliable
interconnection to other industrial equipment.
Asynchronous data rates (selectable) of 19200, 9600, 4800, 2400, and 0-1800
bps.
Easily accessible DIP switches for user configuration and option selection.
DB9-F connector for RS-232/V.24 interface, and RJ-11 for RS-485.
Local analog, local digital, and remote digital loopback diagnostics.

Introduction
8 User’s Manual - SM19202 Fast Poll Modem
Applications
The SM19202FP modem is designed for point-to-point and multipoint data communications.
Figure 1-1 shows a typical point-to-point configuration using the SM19202FP modem and
Figure 1-2 shows a typical multipoint configuration using the SM19202FP modem.
Workstation Modem Modem
Remote Terminal
Figure 1-1. Point-to-Point Network Using the SM19202FP Modem
Workstation Modem
Modem
Modem
Modem Modem
Modem
Remote Terminal
Remote Terminal
Figure 1-2. Multipoint Polling Network Using the SM19202FP Modem
There are a number of factors that can affect the modem’s operation and performance.
These include:
Modem speed (i.e. bit error rate, transmission line distance)
2-wire or 4-wire configuration
Transmission line characteristics, noise, and line impairments
Network configuration (point-to-point or multipoint)

9 User’s Manual - SM19202 Fast Poll Modem
Chapter 2
Installation
This chapter describes how to configure and install the modem to maximize the performance
and to match with your Data Terminal Equipment (DTE) or Remote Terminal Unit (RTU).
Unpacking Your Hardware
Your package should include:
At least one of the following SM19202FP modems:
– Model SM19202FP for 90 to 265 VAC
– Model SM19202FP-DC for 10 to 60 VDC
– Model SM19202FP-RM for RM16M plug-in module
A switching power supply module for 90-265VAC input (model SM19202FP only)
A leased-line cable with optional earth ground conductor (for stand-alone units
only)
A DC power cable (model SM19202FP-DC modem only)
This User’s Manual or CD-ROM
If your package contents are damaged or missing, contact your place of purchase.
Additional Items You Need to Complete Your Installation
To complete your installation and operate your modem, you need these additional items:
Two- or four-wire transmission line or leased line
A DB-9 data cable for your RS-232 interface Data Terminal Equipment (DTE) port,
or a RJ-11C data cable for your RS-485 DTE.
Power supply that provides either:
– 90 to 265 Volts AC, 50 to 60 Hz, single phase or 100 to 400 VDC (if you have
the model SM19202FP modem), or
– 10 to 60 Volts DC (if you have the model SM19202FP-DC modem)
– For the SM19202FP-RM, consult the documentation for your Motorola/UDS
RM16M

Installation
10 User’s Manual - SM19202 Fast Poll Modem
Hardware Overview
Front View
Figure 2-1 shows the front view of the SM19202FP stand-alone modem. Starting from the
left side, this view shows:
A set of eight LEDs for modem interface status (see Table 2-6 on page 26)
A loopback control push-button switch (see Loopback Control Switch on page 26)
Figure 2-1. Front View of the SM19202FP Modem
Back View
Figure 2-2 shows the back view of the SM19202FP stand-alone modem. Starting from the
left side, this view shows:
A 4-wire/2-wire configuration block labeled LEASED LINE
An RJ-11 modular jack labeled RS-485 for connecting the modem to an RS-485
RTU
A female, 9-pin RS-232 connector labeled RS-232 for connecting the modem to a
standard DTE (RTU)
A power connector labeled 10-48V DC
Figure 2-2. Back View of SM19202FP Modem