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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. No part of this manual may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or information storage and retrieval systems, for any purpose other than the purchaser's personal use, without the express written permission of Synxcom Inc. How to obtain Technical Supports e-mail: [email protected] Phone: (949) 390-8236 Fax : (949) 872-2889 Technical Support is available from 8:00 am to 5:00 pm PST, weekdays except major holidays. e-mail support is 7-day a week excluding major holidays. SM19202FP Fast Poll Modem User’s Manual 520-01014-001 Rev. C March 15, 2012 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 S3-4Not Used.................................................................................................. 21 S-3-5 Leased Line Receiver Termination........................................................... 21 S3-6Common Signal Ground and Chassis Ground ......................................... 21 Configuring the Jumper Blocks ................................................................................ 21 For Stand-alone Units ........................................................................................ 21 For Rack-Mount Plug-in Modules ....................................................................... 21 iii User’s Manual - SM19202 Fast Poll Modem Contents 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 iv User’s Manual - SM19202 Fast Poll Modem Contents 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 v User’s Manual - SM19202 Fast Poll Modem Chapter 1 Introduction Thank you for purchasing Synxcom’s SM19202FP fast poll modem, the finest industrialgrade 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 (DCpowered) 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. 6 User’s Manual - SM19202 Fast Poll Modem Introduction 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. 7 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. User’s Manual - SM19202 Fast Poll Modem Introduction 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. Modem Remote Terminal Modem Workstation Figure 1-1. Point-to-Point Network Using the SM19202FP Modem Modem Modem Modem Remote Terminal Modem Modem Remote Terminal Workstation Modem 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: 8 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) 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: 9 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 User’s Manual - SM19202 Fast Poll Modem Installation 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 10 User’s Manual - SM19202 Fast Poll Modem Installation Rack-Mount View Figure 2-3 shows the rack-mount plug-in module. Figure 2-3. Rack-Mount Module for the SM19202FP-RM Modem Board Installation Summary This section describes the steps for installing the modem. NOTE: It is important to follow the steps below to configure the modem’s DIP switches to match your DTE/RTU interface requirement and the transmission line characteristics. If you are not certain about your system’s parameters or the leased-line configuration, please contact your network administrator for assistance. 11 1. Configure the modem using the DIP switches and jumpers. See pages 14 and 20. 2. Connect to a transmission line. See page 22. 3. Connect to a voltage source. See page 23. 4. Connect a DTE device. See page 24. User’s Manual - SM19202 Fast Poll Modem Installation Configuring the Stand-alone Modem You configure the modem using the three sets of DIP switches located at the bottom of the modem box S1 and S2, and S3. Configuration DIP switches S1 and S2 for the stand-alone and rack-mount modems are identical. Their descriptions in this user’s manual apply to both modem versions. Configuration jumper JP1 for the rack-mount modem card is used to select receiver termination impedance. It is important to follow the steps described below, in the order shown, to ensure that you configure your modem properly using the modem DIP switches: 1. Use DIP switch 1 (S1) to configure the modem for your host DTE interface and network topology. Using S1, you select the modem’s operating speed to match you host computer or RTU devices, and other DTE specific operating parameters. 2. Use DIP switch 2 (S2) to select the modem’s transmitter output level and receiver dynamic range specific leased line conditions. The S2 settings apply for both high-speed fast-poll (QAM) and low-speed (FSK) modes. 3. After you change the DIP switch settings, recycle power to the modem to have the settings take effect. NOTE: The DIP switch settings may not take effect until you recycle power to the modem. To access the configuration DIP switches on the stand-alone modem: 1. Ground yourself to discharge any ESD, which might cause damage to the sensitive devices on the modem board. 2. Due to re-designing of the modem’s main assembly circuit board and the chassis, you do not need to open the enclosure to get access to the DIP switches . Place the modem on a flat surface with the bottom up. The locations of the DIP switches for the stand-alone modem are shown in Figure 2-4 on the next page. To set the configuration for the modem, use a sharp pin or small screw driver to slide the switch lever to the ON or OFF positions as shown in Table 2-1. For DIP switches and jumpers on the rack-mount plug-in module, see Figure 2-5. ***IMPORTANT*** Carefully check the DIP switches for the ON (close) or OFF (open) positions according to your RTU interface specifications and to match the data rate and other control inputs to the modem. 12 User’s Manual - SM19202 Fast Poll Modem Installation Figure 2-4. SM19202 Fast-Poll Stand-alone Modem Switches 13 User’s Manual - SM19202 Fast Poll Modem Installation Configuration DIP Switches E3 GT3 GT4 J2 Tx Level 1 Tx Level 2 Tx Level 3 Rcv Range Tx Equalizer Rx Equalizer Anti-Stream RTS-CTS Delay Option 1 Option 2 10 1 S2 D4 S1 D25 10 1 D27 D3 D2 D1 Data Rate 1 Data Rate 2 Data Rate 3 Char Length Auto RTS Tx Carrier 4W/2W Tx Impedance RDLB Disable Factory only Configuration Jumper for Receiver Termination U10 U8 U12 U22 U19 D7 E2 D6 U3 D5 U21 D8 U6 U14 U1 600 ohm T1 F1 F2 U17 T2 F3 GT2 U18 14 2 U15 U15 D11 U2 U7 U5 E1 3 GT1 JP1 D10 U9 Y1 1 Y2 U4 High-Z S3 F4 13 D9 1 J1 Figure 2-5. SM19202 Fast-Poll Rack-mount Modem Board Setting the DIP Switches S1, S2 and S3 are miniature switches used to configure all the options and features of the modem. Table 2-1 shows the setting of the switches. NOTE: Switches S1 to S3 are slide switches. To configure the switches, use a small sharp pin or small screw driver to push the handle to turn ON or to turn OFF each switch. Never leave any switch in half way ON or OFF. When the switch is slide to the ON position, it is referring to as CLOSE condition. When the switch is in the OFF position, it is in the OPEN state. Table 2-1. Modem Switch Settings Switch Settings DIP Switches ON OFF (Default) DIP Switch S1 S1-1 to S1-3: Modem Data Rate S1-4: DTE Async Character 14 19200: 9600: 4800: 2400: Bell 202T: V.23: 11 bit SW1=OFF, SW2=OFF, SW3=OFF SW1=ON, SW2=OFF, SW3=OFF SW1=ON, SW2= ON, SW3=OFF SW1=OFF, SW2=ON, SW3=OFF SW1=OFF, SW2= OFF, SW3=ON SW1=ON, SW2=ON, SW3=ON 10 bit User’s Manual - SM19202 Fast Poll Modem Installation Switch Settings DIP Switches ON OFF (Default) S1-5: Auto RTS Enabled Disabled S1-6: Transmit Carrier Control (SM19202FP-K only) Radio Push-to-Talk option Normal Leased Line S1-7: 2- or 4-wire leased line 2-wire half duplex 4-wire full duplex S1-8: Transmitter Impedance Controlled by RTS 600 ohms S1-9: Remote Digital Loopback Enabled Disabled S1-10: Test Only (Reserved) Factory Test only Normal Operation DIP Switch S2 S2-1 to S2-3: Transmit Output Level From -14 to 0 dBm (see Table 2-5) S2-4: Modem Receive Dynamic Range -10 to -43dBm 0 to -30dBm S2-5: TX Cable Equalizer Enabled Disabled S2-6: RX Cable Equalizer Enabled Disabled S2-7: Anti-streaming Active Inactive S2-8: RTS-CTS Delay (Bell 202T only) 33 msec 8 msec S2-9: Forced RTS ON Force RTS & Carrier to ON Controlled by RTS signal S2-10: Re-Train Enabled (19200 bps only) Enabled Disabled DIP Switch S3 S3-1: RS-232 Interface operation Both S3-1 and S3-2 are set to OFF S3-2: RS-485, 4-wire interface 2-wire interface S3-3: RS-485, Receiver Termination S3-1 = ON, S3-2 = OFF S3-1 = OFF, S3-2 = ON High Impedance 120 Ohms S3-5: Receiver Termination 600 Ohms (Default) High Impedance S3-6: Signal Ground and Chassis Ground Connected Together Open S3-4: Not Used S1-1, S1-2, S1-3 − Modem Data Rate 15 S1-1, S1-2, S1-3: Select the modem speed per Table 2-2 User’s Manual - SM19202 Fast Poll Modem Installation Table 2-2. Modem Operating Speed To Select… Set Switch S1-1 to… Set Switch S1-2 to… Set Switch S1-3 to… 19,200 bps (Note) OFF OFF OFF 9600 bps ON OFF OFF 4800 bps ON ON OFF 2400 bps OFF ON OFF Bell 202T OFF OFF ON V.23/1200 ON ON ON For modem speeds of 2400 bps or higher, the modem uses QAM modulation automatically. When the modem is operating at 1200 bps either in Bell202T or ITU-V.23 mode, the modem uses FSK modulation. Note: Leased lines with a relatively flat 300-3400Hz bandwidth is required to support 19,200 bps operation. S1-4 − Async Character (Fast-Poll Mode Only) S1-4 ON = 11 bits S1-4 OFF = 10 bits (default) Switch S1-4 selects whether the async character is 10 or 11 bits long. 10 bits character: 1 start, 1 stop bit, 7 data + 1 parity(&-E-1), or 8 data with no parity(8-N-1). 11 bits character: 1 start, 1 stop bit, 8 data + 1 parity (8-E-1) This switch setting is ignored when the modem set at 1200 bps or less (FSK modulation). S1-5 − Auto RTS S1-5 ON = Enable Auto RTS S1-5 OFF = Disable Auto RTS (default) For data terminals that do not provide hardware Request To Send (RTS), i.e. only provide TXD, RXD, SG connections, set the modem’s switch S1-5 to ON to enable auto RTS mode. In this mode, the modem does not require RTS input from the DTE or RTU. If TXD is detected at the modem, the modem turns on its internal RTS and carrier signals at the transmitter. After training completes, the TXD is transmitted to the remote modem. The transmitter turns itself off if no TXD is detected after some length of idle time (approx 2 characters). S1-6 − Transmit Carrier Control (For SM19202FP-K only) 16 S1-6 ON = Enable transmit carrier control for radio push-to-talk User’s Manual - SM19202 Fast Poll Modem Installation S1-6 OFF = Normal Leased Line operation (default) When DIP switch SW1-6 is ON, the modem will activate its Push-To-Talk feature. The main theory of operation of this feature is for the modem to turn on the radio as soon as RTS is asserted by the RTU to the SM19202FP-K modem. The modem will use the delayed Clear-To-Send (CTS) as the indicator to the RTU to signal the start of sending data to the host end. When the modem turns on the radio by way of a TTL logic low signal (Keyon), the modem will wait for 30 msec before start sending any analog signal to the radio and the master modem end. This timing is critical and is required by the radio and the modem to ensure the training pattern of the modem is fully transmitted without distortion. For RTUs that only provide the 3-wire RS-232 interface, or using the RS-485 interface, the modem will not receive the RTS signal for the key-on function. As such, the modem must be configured to enable the “Auto-RTS” option (SW1-5 to ON). With this option, the modem will generate its internal RTS when data is detected from the RTU and turn on the “Push-To-Talk” signal to the radio. Note: Please refer to switch setting S2-9; forced RTS ON for other applications. S1-7 − 2-/4-Wire Leased Line Operation S1-7 ON = 2-Wire, Half-Duplex Mode S1-7 OFF = 4-Wire, Full-Duplex Mode (default) Switch S1-7 configures the modem for either 4-wire full-duplex or 2-wire half-duplex leased line operation. S1-8 − Transmitter Impedance S1-8 ON = Transmitter termination is controlled by RTS S1-8 OFF = Transmitter always terminated with 600 Ω (default) Switch S1-8 is used for multi-point configuration networks. When multiple modems are connected on the same metallic circuit: The transmitter termination should be of high impedance if the modem is not transmitting in order not to put a load on the transmission line. The transmitter is only terminated with 600 ohms when RTS is asserted. This configuration should be used for all slave modems to prevent the transmitting modem from being unnecessarily burdened. To select this configuration, set switch S1-8 ON for the slave modems such that the slave modem is in high impedance when not transmitting. 17 User’s Manual - SM19202 Fast Poll Modem Installation If you use the modem with transmission lines that are transformer-coupled or with an impedance-isolated network (such as a transformer bridge), set switch S1-8 OFF for proper operation. S1-9 − Remote Loopback Enable S1-9 ON = Loopback enabled S1-9 OFF = Loopback disabled (default) During instances of channel noise, the modem may mistake a received preamble as a request to go into remote digital loopback. Setting switch S1-9 to OFF prevents the modem from participating in a remote digital loopback with another modem. Switch S1-9 does not prevent the modem from sending a remote digital loopback request to a remote modem. S1-10 − Reserved (Test Only) S1-10 = must be OFF for normal modem opertation Switch S1-10 must be in the OFF position for normal operation. It is reserved for factory testing only. S2-1 through S2-3 − Transmit Level Switches S2-1 through S2-3 are used to adjust the modem’s transmit level. Table 2-5 shows the transmit levels you can select using these switches. Table 2-3. Transmit Levels S2-1 through S2-3 Switch Settings Transmit Level 18 S2-1 S2-2 S2-3 0 dBm OFF OFF OFF −2 dBm OFF OFF ON −4 dBm OFF ON OFF −6 dBm OFF ON ON −8 dBm ON OFF OFF −10 dBm ON OFF ON −12 dBm ON ON OFF -14 dBm ON ON ON User’s Manual - SM19202 Fast Poll Modem Installation S2-4 − Receiver Dynamic Range S2-4 ON = −10 to −43 dBm S2-4 OFF = 0 to −30 dBm (default) For short distances or to select a strong receive signal, set S2-4 to OFF. For a long-distance cable or low receive signal level, set S2-4 to ON (−43 dBm). S2-5 and S2-6 − Cable Equalizer (Fast-Poll Mode Only) S2-5 ON = Enable TX Cable Equalizer S2-5 OFF = Disable TX Cable Equalizer (default) S2-6 ON = Enable RX Cable Equalizer S2-6 OFF = Disable RX Cable Equalizer (default) If you use the SM19202FP as a limited-distance modem over pilot wire or unloaded cables, you may need to improve or extend the modem’s polling performance on long transmission lines by using the modem’s internal fixed Compromise Cable Equalizer when polling on long metallic circuits when the cable exceeds 4 to 5 miles long. The cable equalizer is active only when the modem is in QAM fast-poll mode (2400 bps or higher). S2-7 − Anti-streaming S2-7 ON = Anti-streaming is active S2-7 OFF = Anti-stream is inactive (default) Typically, anti-streaming is used in multi-point applications to prevent a malfunctioning slave data terminal or RTU from occupying the line indefinitely. When anti-streaming is active, the modem can transmit data for a maximum of 27 seconds before the transmitter turns off automatically. The modem then looks for an ON-to-OFF RTS transition before proceeding with normal operation. Anti-streaming can be selected in either high-speed or low-speed mode. S2-8 − RTS-CTS Delay (Bell 202 Mode Only) S2-8 ON = 33.0 ms delay S2-8 OFF = 8.0 ms delay (default) Switches S2-8 determines the duration of the RTS-CTS delay in Bell 202 mode. For V.23 mode, the RTS-CTS delay is fixed at 33 ms. 19 User’s Manual - SM19202 Fast Poll Modem Installation S2- 9− − Forced RTS ON (Constant RTS) S2-9 ON = Force the modem’s internal RTS to on. It also force the modem to turn on CTS and the transmit carrier. S2-9 OFF = Internal RTS is controlled by the RTU (default) Switch 2-9 will force the modem to turn on its internal RTS, CTS and transmit carrier continuously, allowing the RTU and DTE to operate with the modem without supplying RTS signal. This is primary used by DTE’s or RTU’s that support only TD, RD and SG signals. Forced RTS on option is typically used for point-to-point connections between two RTUs or modems. For multi-point applications, the salve modems should not use this option. S2- 10− Re-Train Request Enabled When the SM19202FP modems are operating in high-speed polling modes, the modem’s receivers require a special training pattern from the remote transmit modem to synchronize the receive timing before data can be received. The SM19202FP will only send out a training pattern when the transmit modem’s RTS is raised from the OFF to ON state (i.e. Switched Carrier mode). However, if the modems are configured in Constant Carrier mode, or the RTS is ON continuously by the DIP switches, no training pattern will be sent from the transmit modems. When in configurations where constant carrier is received at the modem’s receiver, there is a possibility that the modem might lose synchronization due to transmission line interferences such as line hits, line drop-outs, or power outage conditions. In order to regain synchronization at the receiver, the SM19202FP modem implements a retrain algorithm which allows the receiving modem to send out a re-train request to the remote modem for re-train and re-gain synchronization. This option is most useful for the modem to operate at 19200 bps and constant carrier or constant RTS modes. S2-10 ON = Re-Train Request is Enabled (for 19,200 bps only) S2-10 OFF = Re-Train Request is Disabled (default) S3- 1 and S3-2− − RS-232 or RS-485 Interface Select The SM19202FP standalone modem support either RS-232/V24 or RS-485 4-wire or RS485 2-wire operation. To select the interface standards to match you RTU, configure S3-1 and S3-2 as following: 20 • RS-232/V.24: S3-1 = OFF, S3-2 = OFF • RS-485, 4-wire: S3-1 = ON, S3-2 = OFF • RS-485, 2-wire: S3-1 = OFF, S3-2 = ON User’s Manual - SM19202 Fast Poll Modem Installation S3-3 RS-485 Receiver Termination When RS-485 is used, a 120 ohm receiver termination may be used to terminate the receiver. • S3-3 • S3-3: OFF, no termination is connected to the receiver ON, a 120 ohms load is placed across the RX+ and RX- signal S3-4- Not Used S-3-5 Leased Line Receiver Termination S3-5 ON: The modem leased line receiver is terminated with 600 ohms (default) S3-5 OFF: The modem’s line receiver is set high input impedance (multi-point) S3-6- Common Signal Ground and Chassis Ground S3-6 ON: The modem chassis ground and signal ground are connected S3-6 OFF: The modem chassis ground and signal ground are not connected. Configuring the Jumper Blocks For Stand-alone Units No internal jumper block is required. For Rack-Mount Plug-in Modules Jumper block JP1 is used to set the modem’s receiver termination impedance • 600 ohms: A shorting jumper is placed over pin 2 & 3 (default) • High impedance: A shorting jumper is placed over pin 1 & 2 Select high receiver impedance (Hi-Z) if multiple modems are connected in a multipoint configuration but without an impedance matching bridged such as private metallic circuit environment. In this configuration, only one receiver should be configured for 600 ohms. 21 User’s Manual - SM19202 Fast Poll Modem Installation Connecting to a Transmission Line The modem has a transmission line interface that can be configured for 2- or 4-wire analog connection, where one pair (Tx-A and Tx-B) is used to transmit data and the other pair (Rx-A and Rx-B) is used to receive data. The transmit pair and receive pair are non-polarized. Table 2-4 shows the pin numbers and corresponding signals for the modem. Figure 2-6 shows the transmission line interface. NOTE: For communication to occur, the Rx line of one modem must connect to the Tx line of the other modem. The modem’s Tx/Rx pair are non-polarized. NOTE: The modem does not support leased-line operation with DC shielding current. Leased-line connector pin assignments for the rack-mount module can be found in the documentation for your Motorola/UDS RM16M. Table 2-4. Transmission Line Connector Pin Assignments This Pin Number… Corresponds to This Signal… 1 Rx (4-wire only) 2 Rx (4-wire only) 3 Tx (Tx/Rx-2-wire) 4 Tx (Tx/Rx-4-wire) 5 Earth Ground (optional) NOTE: When 2-wire half duplex is used, the TX pair must be used for both transmit and receive. Figure 2-6. SM19202FP Modem Transmission Line Interface 22 User’s Manual - SM19202 Fast Poll Modem Installation Connecting to a Voltage Source The back panel of the modem provides a 2-position screw terminal power interface connector. For your convenience, the DC voltage of the input power is non-polarized. To meet your specific application, the modems can be powered from the following power sources: Model SM19202FP (with AC-DC power converter): 90 to 265 Volts AC, 50 to 60 Hz, single phase or 100 to 400 VDC. The output of the converter is a 12 VDC source that will power the modem. Model SM19202FP-DC (DC version): 10 to 60 Volts DC. The model SM19202FPDC comes with a power cord for making this connection. Figure 2-2 on page 10 shows the connection to the Model SM1920FP’s power interface shows the connection to the Model SM19202FP-DC’s power interface. WARNING: Before you connect a voltage source, observe the following power supply voltage guidelines. Otherwise, you will void your warranty if the wrong voltage is applied. 23 Be sure the voltage source is within the permitted ranges shown above. Otherwise, your modem and any attached devices may be damaged. Customer-supplied cables must be suitable for the site environmental conditions. Screw terminals on the power interface accept 24 to 16 AWG. However, surge protection is effective only if there is a solidly earthed ground connection greater than 18 AWG. Be sure the power source is not controlled by a wall switch, which can be inadvertently turned off, shutting off power to the modem. User’s Manual - SM19202 Fast Poll Modem Installation Connecting to an RS-232 Device The modem back panel provides a female, 9-pin RS-232 connector that accepts an attached RS-232 device (see Figure 2-2 on page 10). This connector accepts a standard connection to a DTE (RTU) that conforms to the pin assignments shown under Table B-2 “RS-232 (DTE) Interface” in Appendix B. 5 3 4 9 8 2 7 1 6 Connecting to an RS-485 Device The modem rear panel provide an RJ-11C module jack connector for a 4-pin RS-485 or RS422 interface in the event that your DTE or RTU does not support the RS-232 interface (see Figure 2-2 on page 10 and Figure 2-7). The RS-485 interface supports 4-wire full duplex or 2-wire half duplex. The pin assignments for the RS-485 interface are listed in Table 2-5. Pin #6 Pin #1 Figure 2-7. Pin Locations on the Modem’s RJ-11C Jack Table 2-5. RJ-11C Modular Jack Pin Assignments 24 RJ-11 Pin Number… Corresponds to Signal Name Modem Input or Output 1 Not Used NA 2 RxD+ Output 3 RxD- Output 4 TxD+ Input 5 TxD- Input 6 Not Used NA User’s Manual - SM19202 Fast Poll Modem Installation Modem DTE / RTU 2 3 RxD+ RxD- RJ-11C 4 5 TxD+ TxD- 4 wire RS-485 Connection Modem DTE / RTU 2 3 RxD+ / TxD+ RxD- / TxD- RJ-11C 4 Not Used 5 2 wire RS-485 Connection 25 User’s Manual - SM19202 Fast Poll Modem Installation LEDs The front panel of the modem provides the LEDs shown in Table 2-5. Table 2-6. Modem LEDs LED Color Description RTS Yellow Request To Send CTS Yellow Clear To Send TD Yellow Transmit Data RD Yellow Receive Data CD Yellow Carrier Detect MR Yellow Modem Ready ALB Red* Analog Loopback DLB Red* Digital Loopback * When the modem is in remote loopback, both the ALB and DLB LEDs go ON. Loopback Control Switch The front panel of the modem has a push button for initiating the following loopback diagnostic tests: 26 Local analog loopback started by pressing the button one time. The ALB LED should be ON. When a DTE is connected to the RS-232 port of the modem, the transmit data is loop back to the DTE as receive data. This test will verify the modem transmitter, receiver, and its RS-232 interface along with the connecting cable. Local digital loopback started by pressing the button two times. The DLB LED should be ON. When a DTE is connected to the RS-232 port of the modem, the transmit data is loop back to the DTE as receive data. This test will verify the modem’s RS-232 interface along with the cable attached. Remote digital loopback set the local modem’s RTS signal to low. Press the local modem’s diagnostics test button three times. Both the ALB and DLB LEDs should be ON. Then raise the local modem’s RTS signal to start the test. The ALB and DLB LEDs of the remote modem should go ON when the modem is responded to remote digital loopback. This test will verify both modems’ transmitters, receivers, and the leased line User’s Manual - SM19202 Fast Poll Modem Installation NOTE: Be sure switch S1-9 is set to the ON position to enable the remote modem to respond to remote digital loopback requests. This test is only available in fastpoll mode at 2400 bps or higher. Figure 2-8 shows these three loopback diagnostics. Receiver Transmitter Leased Line HOST Transmitter Receiver RTU Local (Host) Analog Loop Back Transmitter Receiver Leased Line HOST Receiver Transmitter RTU Local (Host) Digital Loop Back Transmitter Receiver Leased Line HOST Receiver Transmitter RTU Remote (RTU) Digital Loop Back Figure 2-8. Loopback Diagnostic Modes 27 User’s Manual - SM19202 Fast Poll Modem Appendix A Troubleshoot ing In the event you encounter a problem using your Synxcom modem, refer to the troubleshooting information in this appendix. IMPORTANT: If you encounter a problem with your modem, be sure the switches on the modem are set to the appropriate positions (see Table 2-1 on page 14). If a switch is halfway between an on and off setting, the modem will not operate properly. Problem Solving Table A-1 offers troubleshooting solutions for modem problems. Table A-1 Problem Solving If… Perform These Procedures… No LEDs are ON at the front panel Check the power supply source. Be sure the input power to the modem’s power connector is between 10 to 60VDC . The MR LED should be on if the modem is powered up properly and when it is not in any loopback test mode. Modem does not respond to the attached DTE and the all LEDs are off. Check the connecting RS-232 or RS-485 cable between the DTE and the modem. The MR/DSR LED (Modem Ready/Data Set Ready) on the front panel should be ON when the modem is idle. Modem does not receive data, and the DCD and RxD LEDs are off. Check the DIP switches of both modems to make sure that the same data rate and operating parameters are identical on both modems. The receive line pair may be disconnected from the modem. Make sure the transmission line connection to the modem is accurate and secure. The receive signal level may be below the CD threshold. Set switch S1-5 ON to see whether configuring the modem for a −43 dBm threshold resolves the problem. If this problem remains unresolved, perform a local ALB loopback test to determine if the modem’s receiver is functioning correctly. The RTS, CTS, and TxD LEDs do not blink. The attached terminal or DTE may not be sending data to the modem. Verify that data is being transmitted. If data is being transmitted, make sure the RS-232 cable is sound and securely connected to the modem and terminal or DTE. 28 User’s Manual - SM19202 Fast Poll Modem Appendix B Specification s General Specifications Data rate: 19200, 9600, 4800, 2400, 0-1800 (Bell 202T), or 0-1200 bps (V.23) asynchronous Modem Training Time: (RTS-CTS Delay) 17.4 ms. (fast poll at 19200 bps) 23 ms. (fast poll at 2400/4800/9600 bps ) 8 or 33 ms (Bell 202T) 33 ms (V.23) Data format: 8 or 9 data bits with 1 or more stop bits, or 7 data bit with parity bit DTE interface: EIA RS-232/V.24, or RS-485 (2-wire HD or 4-wire FD) compatible Line conditions: TELCO voice band 4- or 2-wire leased line, conditioned or unconditioned Private metallic circuits up to 9.5 miles at 9600 bps (24 AWG) without cable equalizer. Up to 15.0 miles (24 AWG) with TX and RX cable equalizer. Up to 25 miles for FSK modes. Operating modes: 2-wire half-duplex or 4-wire full-duplex over leased or private line Modulation: QAM High-speed fast poll mode FSK, Bell 202T or V.23 compatible • Mark = 1200 Hz (1300 Hz, V.23) • Space = 2200 Hz (2100 Hz, V.23) • Soft Carrier = 900 Hz (Bell 202T only) Equalizer Automatic, adaptive Receiver dynamic range: 0 to –30 dBm or –10 to –43 dBm Operating temperature: -40°C to +85°C Power supply: Wide range switching power supply: • • SM19202FP (AC version): 90 to 265 Volts AC, 50/60 Hz, single phase or 90 to 400 VDC SM19202FP-DC (DC version):10 to 60 Volts DC Surge protection: Leased line, up to 15KV Carrier control: Constant or switched, DIP switch selectable Carrier loss recovery: Train on data automatically Throughput delay: Less than 10 milliseconds for fast polling Auto RTS: Support DTE without hardware RTS 29 User’s Manual - SM19202 Fast Poll Modem Specifications Anti-streaming: 27-second timer to prevent transmitter lock-up network Mechanical Specifications Enclosure: Aluminum with removable front and rear panels Dimensions: 5.0” wide x 6.5” long x 1.30” high Weight: 1.0 lbs without AC to DC power converter module Interface connectors Leased Line: Data Terminal Equipment: 5-position screw terminal (includes earth ground) DB-9 female connector (for RS-232) RJ-11C modular jack (for RS-485) Interface Connector Pin Assignments Table B-1. Leased Line Terminal Block Pin Assignments This Pin Number… Corresponds to This Signal… 1 Rx 2 Rx 3 Tx 4 Tx 5 Earth Ground (optional) NOTE: When 2-wire half-duplex is used, the TX pair must be used for both transmit and receive. Figure 2-9. Back-to-Back Connection to a Second Modem 30 User’s Manual - SM19202 Fast Poll Modem Specifications RS-232 (DTE) Interface Table B-2. RS-232 (DTE) Interface Signal Name Modem Input/Output DB-9 Pin Description DCD Output 1 Data Carrier Detected RXD Output 2 Receive Data TXD Input 3 Transmit Data SG 5 Signal Ground DSR Output 6 Data Set Ready (Modem Ready) RTS Input 7 Request To Send CTS Output 8 Clear To Send RS-485 (DTE) Interface Table B-3. RS-485 (DTE) Interface RJ-11 Pin Number… Corresponds to Signal Name Modem Input or Output 1 Not Used NA 2 RxD+ Output 3 RxD- Output 4 TxD+ Input 5 TxD- Input 6 Not Used NA Environmental Specifications Operating temperature: -40 to + 85o C Storage temperature: -40 to +125o C Operating humidity: 5 to 95 %, non-condensing Line isolation: 3750 V RMS Surge protection: Leased line up to 15K VA 31 User’s Manual - SM19202 Fast Poll Modem Appendix C Limited Product Warranty Synxcom warrants that the Product sold will be free from defects in material and workmanship and perform to Synxcom' applicable published specifications for a period of 24 months from the date of delivery to Customer. The liability of Synxcom hereunder shall be limited to replacing or repairing, at its option, any defective Products that are returned F.O.B. to Synxcom's Irvine, California facility (or, at Synxcom's option, refunding the purchase price of such products). In no case are Products to be returned without first obtaining permission and a customer return order number from Synxcom. In no event shall Synxcom be liable for any consequential or incidental damages. Products that have been subject to abuse, misuse, accident, alteration, neglect, unauthorized repair or installation are not covered by the warranty. Synxcom shall make the final determination as to the existence and cause of any alleged defect. No liability is assumed for expendable items such as lamps and fuses. No warranty is made with respect to custom products or Products produced to Customer's specifications except as specifically stated in writing by Synxcom in the agreement for such custom products. Warranty is voided if the serial number label on the printed circuit assembly of returned modems is removed, defaced, or destroyed. This label contains the serial number that will provide proof of the date of manufacturing. This warranty is the only warranty made by Synxcom with respect to the goods delivered hereunder, and may be modified or amended only by a written instrument signed by a duly authorized officer or Synxcom and accepted by Customer. This warranty and limitation extends to customer and to users of the product and is in lieu of all warranties with respect to the product whether express, implied, or statutory, including without limitation the implied warranties of merchantability and fitness for a particular purpose. 32 User’s Manual - SM19202 Fast Poll Modem Appendix D RMA Procedure Before returning any Synxcom product, an RMA number must be obtained. Before asking for an RMA number, ascertain that the product was purchased from Synxcom. If you bought the product from a Distributor or Systems Integrator, the product should be returned to that vendor. The most convenient method to obtain an RMA number for a product purchased from Synxcom is to fill out and submit the RMA form on-line, or send an email to [email protected]. Information required must include: Company name Address (including any Mail Stop or specific delivery information) Name, contact information, and e-mail address for the technical contact(s) at your company If the above information is on your letterhead, that format is acceptable. For each item you wish to return, please include: The product model number (usually found on the serial number tag) The serial number for each item you wish to return A description of the problem you are encountering The cause of the problem (if known) A product support specialist may call to verify that the product is properly installed or may ask you to perform tests to insure that the product has actually failed. After reviewing the problem, Synxcom will assign an RMA number and you will be notified by email or FAX. The product must be properly packed and returned to: Synxcom Inc. 10 Lee Irvine, CA 92620 Attn: Technical Support The RMA number must be legibly displayed on the shipping carton. No RMAs will be issued without a product review. Synxcom will not be responsible for any product returned without an RMA number. If you believe the product may be out of warranty, include a method of payment for repairs (either a Purchase Order number or credit card number), card holder name, date of expiration on the RMA request. Repairs currently require 5 working days and are returned UPS second day air. Contact us by e-mail [email protected] or Fax: (949) 872-2889 if you should have any questions. 33 User’s Manual - SM19202 Fast Poll Modem RMA Procedure 34 User’s Manual - SM19202 Fast Poll Modem
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