Telenetics DSP9612RM User Manual

Flash poll rack-mount modem

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DSP9612RM Flash Poll
Rack-Mount Modem
User's Guide
ARC Electronics 800-926-0226 www.arcelect.com
0049−0519−000 Rev. A

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  • Page 1 ¤ DSP9612RM Flash Poll Rack-Mount Modem User’s Guide ARC Electronics 800-926-0226 www.arcelect.com 0049−0519−000 Rev. A...
  • Page 2 This device complies with Part 15A of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15A of the FCC Rules.
  • Page 3: Table Of Contents

    CHAPTER 1 INTRODUCTION ...5 ...6 EATURES ...7 PPLICATIONS NCILLARY OCUMENTATION CHAPTER 2 INSTALLATION ...9 NPACKING ARDWARE DDITIONAL TEMS ARDWARE VERVIEW Front View...10 Component View ...11 NSTALLATION UMMARY ONFIGURING THE ODEM High-Speed (Fast Poll) Mode ...12 Low-Speed (FSK) Mode ...18 NSTALLING THE ODEM IN THE ONNECTING TO A RANSMISSION...
  • Page 4 Contents OTES Page iv...
  • Page 5: Chapter 1 Introduction

    It is also backward compatible with Bell 202 modems. The modem can be installed in either a Telenetics or a Motorola/UDS RM16M Universal Data Shelf. The modem occupies only one rack slot, eliminating the hassle of equipment trays and power bricks required for “Plastic Box”...
  • Page 6: Features

    Requires only one rack slot in a Telenetics or a Motorola/UDS RM16M Universal Data Shelf. c Operates over voice-band conditioned or unconditioned leased line and pilot wires.
  • Page 7: Applications

    Applications Applications The DSP9612RM 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:...
  • Page 8 Introduction OTES Page 8...
  • Page 9: Additional Item You Need

    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: c A Telenetics or Motorola/UDS RM16M Universal Data Shelf c A two- or four-wire transmission line or leased line Page 9...
  • Page 10: Hardware Overview

    Installation Hardware Overview Front View Figure 2-1 shows a front view of the DSP9612RM modem. Starting from the top, this view shows: c A loopback test switch. See page 28. c A set of eight LEDs. See page 27. Figure 2-1. Front View of Modem...
  • Page 11: Component View

    Jumpers located in various positions on the modem. Do not change or remove the straps from these jumpers. c Edge connectors at the back of the modem, which plug into the backplane of a Telenetics or Motorola/UDS RM 16M Universal Data Shelf. Edge Connectors Switch Block SW2 Figure 2-2.
  • Page 12: Installation Summary

    Installation Installation Summary The modem installation involves the following steps: Configuring the modem. See the section below. Connecting to a transmission line. See page 25. Connecting an RS-232 device. See page 26. Configuring the Modem You configure the modem using the two sets of DIP switches on the component side of the modem, near the center.
  • Page 13 Table 2-1. Modem Switch Settings for High-Speed Mode Switches SW 1-1 − 1-4: Transmit Level (page 14) SW 1-5: Receiver Dynamic Range (page 15) SW 1-6: TX Cable Equalizer (page 15) SW 1-7: RX Cable Equalizer (page 15) SW 1-8: Anti-streaming (page 15) SW 2-1: High-Speed/Low-Speed Mode (page 16) SW 2-2: Data Rate in Fast Poll Mode...
  • Page 14 Installation SW1-1 through SW1-4 − Transmit Level (high- & low-speed modes) Switches SW1-1 through SW1-4 adjust the modem’s transmit level. Table 2-2 shows the transmit levels you can select using these switches. Table 2-2. Transmit Levels (High-Speed and Low-Speed Modes) Transmit Level 0 dBm −1 dBm...
  • Page 15 SW1-5 − Receiver Dynamic Range (high- & low-speed modes) 10 to −43 dBm − SW1-5 ON = OFF = +3 to −30 dBm For a low receive signal level, set SW1-5 to ON (−43 dBm ). For short distances or to select a strong receive signal, set SW1-5 to OFF. SW1-6 and SW1-7 −...
  • Page 16 Installation SW2-1 − Fast Poll/FSK (high- & low-speed modes) SW2-1 ON = Low-Speed Mode (FSK) OFF = High-Speed Mode (Fast Poll) SW2-1 configures the modem for either low-speed (FSK) mode or high-speed (Fast Poll) mode. As a result, the SW2-1 setting you choose determines the switch definitions for the other switches.
  • Page 17 SW2-8 − Carrier Control (high- & low-speed modes) SW2-8 ON = Constant OFF = Switched SW2-8 selects either constant or switched carrier. Constant carrier allows DTEs, such as asynchronous dumb terminals or RTUs, to operate with modems, without the input RTS signal. When constant carrier mode is enabled (SW2-8 set to ON), the modem forces the transmit carrier active and the RTS-CTS delay is minimum (<0.5 ms.).
  • Page 18: Low-Speed (Fsk) Mode

    Installation Low-Speed (FSK) Mode Table 2-3 shows the modem switch settings that can be used when the modem is configured for low-speed (FSK) mode. This mode is enabled when switch SW2-1 is set to ON. Following this table is an explanation of these settings.
  • Page 19 SW1-1 through SW1-4 − Transmit Level (high- & low-speed modes) Switches SW1-1 through SW1-4 adjust the modem’s transmit level. Table 2-4 shows the transmit levels you can select using these switches. Table 2-4. Transmit Levels (High-Speed and Low-Speed Modes) Transmit Level 0 dBm −1 dBm −2 dBm...
  • Page 20 Installation SW1-5 − Receiver Dynamic Range (high- & low-speed modes) 10 to −43 dBm − SW1-5 ON = OFF = +3 to −30 dBm For a low receive signal level, set SW1-5 to ON (−43 dBm ). For short distances or to select a strong receive signal, set SW1-5 to OFF. SW1-6 and SW1-7 −...
  • Page 21 SW2-1 − Fast Poll/FSK (high- & low-speed modes) SW2-1 ON = Low-Speed Mode (FSK) OFF = High-Speed Mode (Fast Poll) SW2-1 configures the modem for either low-speed (FSK) mode or high-speed (Fast Poll) mode. As a result, the SW2-1 setting you choose determines the switch definitions for the other switches.
  • Page 22 Installation SW2-5 − Soft Carrier (low-speed mode only) SW2-5 ON = Disabled OFF = Enabled SW2-5 controls the soft carrier and is valid for low-speed mode only. Setting this switch to OFF configures the modem to transmit a 900 Hz soft carrier to the remote modem after RTS is turned off.
  • Page 23: Installing The Modem In The Universal Data Shelf

    Shelf After you set the modem’s configuration switches, you can install it in a slot within a 19- or 23-inch Telenetics or Motorola RM16M Universal Data Shelf. The modem is installed or replaced from the front of the Universal Data Shelf, without disturbing the cable connections on the back of the Shelf.
  • Page 24 Installation Remove the front panel of the Universal Data Shelf and pick an empty slot. Hold the modem so the front panel LEDs are facing you and the edge connectors are pointing to the backplane of the Universal Data Shelf. Install the modem into the selected slot in the Universal Data Shelf (see Figure 2-3).
  • Page 25: Connecting To A Transmission Line

    Connecting to a Transmission Line Figure 2-4. Modems Installed in the Rack Connecting to a Transmission Line The Universal Data Shelf has different Telco options. Your version may have 16 8-pin modular jack connectors, one for each slot in the Shelf.
  • Page 26: Mass Termination Connector

    The Tx line of the Shelf’s RJ-45 jack must connect to the Rx line of the other modem. For more information, refer to the Telenetics RM16M Installation and Operation Manual for the Universal Data Shelf version you have. Mass Termination Connector As an option, a 50-pin mass-termination connector can be used as the Telco connection for the modem(s).
  • Page 27: Leds

    LEDs The front panel of the modem provides the LEDs shown in Table 2-7. Power * When the modem is in remote loopback, both the ALB and DLB LEDs go ON. Table 2-7. Modem LEDs Color Green Yellow Yellow Yellow Yellow Yellow Red*...
  • Page 28: Loopback Control Switch

    Installation Loopback Control Switch The front panel of the modem has a push button for initiating the following loopback diagnostic tests: c Local analog loopback  started by pressing the button one time. c Local digital loopback  started by pressing the button two times. c Remote digital loopback ...
  • Page 29: Appendix A Troubleshooting

    Telenetics modem, refer to the troubleshooting information in this appendix. To troubleshoot the power supply and backplane on the Universal Data Shelf, refer to the Telenetics RM16M Installation and Operation Manual for the Universal Data Shelf version you have.
  • Page 30 Troubleshooting Table A-1. Troubleshooting Suggestions If… The RTS, CTS, and TxD LEDs do not blink. Perform These Procedures… 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...
  • Page 31: Appendix B Specifications

    Private metallic circuits up to 9.5 miles (24 AWG) without cable equalizer. Up to 15.0 miles (24 AWG) with TX and RX cable equalizer 2-wire half-duplex or 4-wire full-duplex High-speed fast poll – Telenetics proprietary FSK, Bell 202T compatible • Mark = 1200 Hz •...
  • Page 32: Mechanical Specifications

    Specifications Receiver dynamic range: Operating temperature: Surge protection: Carrier Control: Carrier loss recovery: Throughput delay: Less than 10 milliseconds for fast polling. Auto RTS: Anti-Streaming: Mechanical Specifications Dimensions: Weight: 0 to –30 dBm or –10 to –43 dBm -40°C to +85°C Leased line, up to 15KV Constant or switched, DIP switch selectable Train on Data...
  • Page 33: Back-To-Back Connections To A Second Modem

    Back-to-Back Connections to a Second Modem Modem 1 RS-232 (RTU) Interface Signal Modem Name Input/Output  Earth GND Input Output Input Output Output Output Input Back-to-Back Connections to a Second Modem DB25 Page 33 Modem 2 Description Earth Ground Transmit Data Receive Data Request To Send Clear To Send...
  • Page 34: Environmental Specifications

    Specifications Environmental Specifications Operating temperature: -40 to + 85 Storage temperature: Operating humidity: Isolation: Surge protection: Compliances The modem is designed to meet the following agency requirements: EMI/RFI: FCC part 15 for Class A computing device Industry Canada. (Emissions) -40 to +125 5 to 95 %, non-condensing.
  • Page 35: Appendix C Limited Product Warranty

    Telenetics in the agreement for such custom products. This warranty is the only warranty made by Telenetics 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 Telenetics and accepted by Customer.
  • Page 36: Appendix Drma Procedure

    Lake Forest, CA 92630 The RMA number must be legibly displayed on the shipping carton. No RMA’s will be issued without a product review, Telenetics will not be responsible for any product returned without an RMA number. In the near future the RMA form will be available on our Web site Telenetics.com/support/rma.

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