DATA CONNECT ENTERPRISE User’s Manual For DSP19.2 & DSP9612 Fast Poll Modem Document Number 520-01001-101 Rev.
Copyright © 2008 Data Connect Enterprise. All Rights Reserved. Web site: www.data-connect.com The products and programs described in this User’s Manual are licensed products of Data connect Enterprise. This User’s Manual contains proprietary information protected by copyright, and this User’s Guide and all accompanying hardware and documentation are copyrighted. Data Connect Enterprise.
DATA CONNECT ENTERPRISE Contents Chapter 1 Introduction ............................................................................................ 6 Features ...................................................................................................................... 7 Applications ................................................................................................................. 8 Chapter 2 Installation .............................................................................
Contents Appendix A Troubleshooting................................................................................ 25 Problem Solving ........................................................................................................ 25 Appendix B Specifications ................................................................................... 26 General Specifications .............................................................................................. 26 Mechanical Specifications .......
Contents Figures Figure 1-1. Point-to-Point Network Using the DSP19.2FP Modem......................................... 8 Figure 1-2. Multipoint Polling Network Using the DSP19.2FP Modem ................................... 8 Figure 2-1. Front View of the DSP19.2 Modem .................................................................... 10 Figure 2-2. Back View of DSP19.2 Modem........................................................................... 10 Figure 2-3. Rack-Mount Module for the DSP19.
DATA CONNECT ENTERPRISE Chapter 1 Introduction Thank you for purchasing DCE’s DSP19.2 fast poll modem, the finest industrial-grade fastpoll modem available. The DCE modem is a 19200/9600/2400/1200 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.
Introduction Features The DSP19.2 modem is specifically designed for harsh environments typically associated in utility substations and industrial facilities. Though functionally similar to commercial modems, the DSP19.2 provides the following unique features that make it well suited for utility and industrial applications. 7 y Packaged in a rugged, compact enclosure for industrial applications. y Leased-line interface protected with heavy-duty surge protection devices.
Introduction Applications The DSP19.2 modem is designed for point-to-point and multipoint data communications. Figure 1-1 shows a typical point-to-point configuration using the DSP19.2 modem and Figure 1-2 shows a typical multipoint configuration using the DSP19.2 modem. Modem Remote Terminal Modem Workstation Figure 1-1. Point-to-Point Network Using the DSP19.2 Modem Modem Modem Modem Remote Terminal Modem Workstation Modem Modem Remote Terminal Figure 1-2.
DATA CONNECT ENTERPRISE 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: y At least one of the following DSP19.2 modems: – Model DSP19.2 for 90 to 265 VAC – Model DSP19.2-LV for 10 to 60 VDC – Model DSP19.
Installation Hardware Overview Front View Figure 2-1 shows the front view of the DSP19.2 stand-alone modem. Starting from the left side, this view shows: y A set of eight LEDs for modem interface status (see Table 2-6 on page 23) y A loopback control push-button switch (see Loopback Control Switch on page 23) Figure 2-1. Front View of the DSP19.2 Modem Back View Figure 2-2 shows the back view of the DSP19.2 stand-alone modem.
Installation Rack-Mount View Figure 2-3 shows the rack-mount plug-in module. Figure 2-3. Rack-Mount Module for the DSP19.2-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.
Installation Configuring the Modem You configure the modem using the two sets of DIP switches and two sets of configuration jumpers on the printed circuit board of the modem labeled S1 and S2, JP1 and JP3. 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.
Installation Configuration Switches S1 & S2 Configuration Jumpers JP1 & JP3 J4 D17 10 1 10 S1 JP2 11 D18 1 D19 S2 J3 D20 D21 10 JP1 5 D22 1 2 RS232 6 RS485 J2 D23 D24 3 JP3 T2 S3 Hi-Z J1 U8 600 1 J6 J5 GT3 T3 F1 F2 F3 F4 GT2 U10 Figure 2-4. DSP19.
Installation Setting the DIP Switches S1 and S2 are 10-position DIP switches used to configure all the options and features of the modem. Table 2-5 shows the setting of the switches. NOTE: Switches S1 and S2 are toggle switches. To configure the switches, use a small sharp pin to firmly press down on one end to open or to close each switch. Never leave any switch in half open and half close. Press down on the side of the switch labeled OPEN is referring to as OFF condition.
Installation S1-1, S1-2, S1-3 − Modem Data Rate y S1-1, S1-2, S1-3: Select the modem speed per Table 2-2 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 OFF OFF OFF 9600 bps ON OFF 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.
Installation RTS signal. If you enable constant carrier (switch S1-6 = ON), the modem forces the transmit carrier active and the RTS-CTS delay is shortened to less than 0.5 ms. You can use constant carrier in 4-wire point-to-point, or at the master unit of multi-point network applications to reduce modem training time. In switched-carrier mode (switch S1-6 = OFF), the RTS-CTS delay is 23 ms for 2400 bps and above.
Installation 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) y S1-10 = must be OFF 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 adjust the modem’s transmit level.
Installation S2-5 and S2-6 − Cable Equalizer (Fast-Poll Mode Only) y S2-5 ON = Enable TX Cable Equalizer S2-5 OFF = Disable TX Cable Equalizer (default) y S2-6 ON = Enable RX Cable Equalizer S2-6 OFF = Disable RX Cable Equalizer (default) If you use the DSP19.
Installation Configuring the Jumper Blocks For Stand-alone Units Jumper block JP1 is use to select RS-232/V24 or RS-485 interface with your DTE or RTU.
Installation Table 2-4. Transmission Line Connector Pin Assignments This Pin Number… Corresponds to This Signal… 1 Rx 2 Rx 3 Tx (Tx/Rx) 4 Tx (Tx/Rx) 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. DSP19.2 Modem Transmission Line Interface 20 User’s Manual - DSP19.
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: y Model DSP19.2 (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. y Model DSP19.
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 “RS-232 (DTE) Interface” on page 28.
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.
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.
DATA CONNECT ENTERPRISE Appendix A Troubleshooting In the event you encounter a problem using your DCE 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.
DATA CONNECT ENTERPRISE Appendix B Specifications General Specifications Data rate: 19200, 9600, 2400, 0-1800 (Bell 202T), or 1-1200 bps (V.23) asynchronous 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 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.
Specifications 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 module jack (for RS485) Interface Connector Pin Assignments Table B-1.
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.
DATA CONNECT ENTERPRISE Appendix C Limited Product Warranty DCE warrants that the Product sold will be free from defects in material and workmanship and perform to DCE' applicable published specifications for a period of 24 months from the date of delivery to Customer. The liability of DCE hereunder shall be limited to replacing or repairing, at its option, any defective Products that are returned F.O.B. to DCE's Olney, Maryland facility (or, at DCE's option, refunding the purchase price of such products).
DATA CONNECT ENTERPRISE Appendix D RMA Procedure Before returning any DCE product, an RMA number must be obtained. Before asking for an RMA number, ascertain that the product was purchased from DCE. 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 authorization for a product purchased from DCE is to submit a request by fill in the form from www.data-connect/returns.htm.
RMA Procedure 31 User’s Manual - DSP19.
