DSP DSP 9612 User manual

DSP 9612 Flash Poll Modem
User’s Guide
0049−0117−000 Rev. B

Page iii
Contents
CHAPTER 1 INTRODUCTION
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5
FEATURES
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6
APPLICATIONS
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7
CHAPTER 2 INSTALLATION
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9
UNPACKING YOUR HARDWARE
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9
ADDITIONAL ITEMS YOU NEED
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9
HARDWARE OVERVIEW
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10
Back View
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10
Front View
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INSTALLATION SUMMARY
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FINDING A SUITABLE LOCATION
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12
CONFIGURING THE MODEM
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12
High-Speed (Fast Poll) Mode
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13
Low-Speed (FSK) Mode
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18
CONNECTING TO A TRANSMISSION LINE
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23
CONNECTING TO A VOLTAGE SOURCE
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25
CONNECTING AN RS-232 DEVICE
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26
LEDS
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26
LOOPBACK CONTROL SWITCH
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27
APPENDIX A TROUBLESHOOTING
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PROBLEM SOLVING
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APPENDIX B SPECIFICATIONS
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GENERAL SPECIFICATIONS
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MECHANICAL SPECIFICATIONS
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INTERFACE CONNECTOR PIN ASSIGNMENTS
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RS-232 (RTU) Interface
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ENVIRONMENTAL SPECIFICATIONS
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COMPLIANCES
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APPENDIX C COMPLIANCES
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APPENDIX D LIMITED PRODUCT WARRANTY
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APPENDIX E RMA PROCEDURE
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Contents
Page iv
NOTES

Page 5
Chapter 1
Introduction
ongratulations for purchasing the finest industrial-grade fast-
poll modem available.
The DSP9612 (Flash Poll) modem is a 9600/4800/0-
1800 bps modem designed for 4-wire, full-duplex or 2-wire, half-
duplex operation over a voice-band leased line. The modem is designed
utilizing the latest digital-signal processing (DSP) technology to
achieve high performance. The modem employs proprietary
modulation and encoding scheme to achieve fast modem training time.
The modem is also backward compatible with Bell 202 modems.
The DSP9612 modem is ideally suited for multi-point communication
systems that require fast response time, short training time, and low
throughput delay. The DSP9612 is the most technologically advanced
modem on the market.
This User’s Guide is designed to let you 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.
C

Introduction
Page 6
Features
The DSP9612 modem is specifically designed for harsh environments
found in utility substations and industrial facilities. Though
functionally similar to commercial modems, the DSP9612 provides the
following unique features that make it well suited for utility and
industrial applications.
cPackaged in a rugged, compact enclosure for industrial
applications.
cLeased-line interface protected with heavy-duty surge protection
hardware (15KV).
cRequires no human intervention, making it ideal for unmanned
locations.
cWorks within an extended temperature range of -40ºC to +85ºC.
cDesigned with coupling transformers for high-voltage isolation
and common mode noise rejection in industrial and commercial
environments.
cOperate over voice-band conditioned or unconditioned leased line
and pilot wires.
cAccepts power from a wide range of AC and DC power supplies.
cStandard industrial connectors for data, analog, and power
interfaces allow reliable interconnection to other industrial
equipment.
cAsynchronous data rates (selectable) of 9600, 4800, and 0-1800
bps.
cEasily accessible DIP switches for user configuration and option
selection.
cDB25 connector for RS-232/V.24 interface.
cLocal analog, local digital, and remote digital loopback
diagnostics.

Applications
Page 7
Applications
The DSP9612 modem is designed for point-to-point and multipoint
data communications. Figure 1-1 shows a typical multipoint
configuration.
Figure 1-1. Network of Multipoint Configuration
There are a number of factors that can affect the network’s and
modem’s operation and performance. These include:
cOperating speed
c2-wire or 4-wire configuration
cTransmission line characteristics, noise, and line impairments
cNetwork configuration (point-to-point or multipoint)
cNumber of nodes on the network

Introduction
Page 8
NOTES

Page 9
Chapter 2
Installation
his chapter describes how to install the modem.
Unpacking Your Hardware
Your package should include:
cAt least one DSP9612FP modem
cA leased-line cable
cThis User’s Guide
If your package contents are damaged or missing, please contact your
place of purchase immediately.
Additional Items You Need
To use your modem, you need the following additional items:
cTwo- or four-wire transmission line or leased line
cA power supply that provides either:
−85 to 265 Volts AC, 50 to 60 Hz, single phase (AC
version), or
−10 to 53 Volts DC (DC version)
T

Installation
Page 10
Hardware Overview
Back View
Figure 2-1 shows the back view of the DSP9612FP modem. Starting
from the left side, this view shows:
cA 4-wire/2-wire configuration block. See page 23.
cA female, 25-pin RS-232 connector, for connecting a standard
DTE (RTU). See page 26.
cA POWER ON/OFF switch.
cA power connector. See page 25.
Figure 2-1. Back View of Modem
B
B
a
a
c
c
k
k
V
V
i
e
e
w
w
Power Source
Power Switch
DTE Connection
Leased Line

Hardware Overview
Page 11
Front View
Figure 2-2 shows the front view of the modem. Starting from the left
side, this view shows:
cA set of nine LEDs. See page 26.
cA loopback test switch. See page 27.
Figure 2-2. Front View of Modem