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Information in this User’s Guide is subject to change without notice and does not represent a commitment on the part of Raymar Information Technology, Inc. Raymar Information Technology, Inc. assumes no responsibility for any inaccuracies that may be contained in this User’s Guide.
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Compliances 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.
The Raymar-Telenetics MD9612FP (Flash Poll) modem is a 9600/4800/0- 1800 bps rack-mount 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.
Features Though functionally similar to commercial modems, the MD9612FP provides the following unique features that make it well suited for utility and industrial applications. Requires only one rack slot. Operates over voice-band conditioned or unconditioned leased line and pilot wires. Operates without human intervention, making it ideal for unmanned locations.
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There are a number of factors that can affect the network’s and modem’s operation and performance. These include: Operating speed 2-wire or 4-wire configuration Transmission line characteristics, noise, and line impairments Network configuration (point-to-point or multipoint) Number of nodes on the network MD9612FP USER’S GUIDE Page 3 0049-1237-XXX...
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: An Myriad (MDR) Rack from Raymar-Telenetics A two- or four-wire transmission line or leased line Hardware Overview Front View Figure 2-1 shows a front view of the MD9612FP modem.
Jumpers located in various positions on the modem. Do not change or remove the straps from these jumpers. Edge connectors at the back of the modem, which plug into the backplane of an MDR Rack from Raymar-Telenetics. MD9612FP USER’S GUIDE Page 5 0049-1237-XXX REV.
Installation Summary The modem installation involves the following steps: Configuring the modem. See below. Connecting to a transmission line. See page 19. Connecting an RS-232 device. See page 20. Configuring the Modem You configure the modem using the three sets of DIP switches on the bottom of the modem.
Model: MD9612FP SW1 DIP Switch Settings SW1 is an 8-position DIP switch. Table 2-1 shows the modem switch settings for DIP switch SW1. A description of the SW1 switch settings follows the table. Note SW1 settings apply for both high- speed fast-poll and low-speed (FSK) modes Table 2-1.
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SW1-1 through SW1-4 − Transmit Level 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 SW1 through SW4 Switch Settings SW1-1 SW1-2 SW1-3 SW1-4 Transmit Level 0 dBm −1 dBm...
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− SW1-5 Receiver Dynamic Range 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. −...
SW2 DIP Switch Settings SW2 is an 8-position DIP switch. Table 2-3 shows the modem switch settings for DIP switch SW2. A description of the SW2 switch settings follows the table. Table 2-3. Modem Switch Settings for DIP Switch SW2 Switches Switch Settings OFF (Default)
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⎯ SW2-1 FSK Mode SW2-1 ON = ITU-T V.23 mode OFF = Bell 202 mode The modem has two FSK modes: Bell 202, which supports data rates from 0 to 1800 bps ITU-T V.23, which supports data rates from 0 to 1200 bps SW2-1 configures the modem for either of these FSK modes.
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⎯ SW2-3 FSK Soft Carrier (Bell 202 FSK Mode Only) SW2-3 ON = None OFF = 8ms SW2-3 controls the soft carrier and is valid for Bell 202 FSK mode only (SW2-1 set to OFF). Setting this switch to OFF configures the modem to transmit a 900 Hz soft carrier to the remote modem for 8 milliseconds after RTS is turned off.
⎯ SW2-7 Remote Loopback SW2-7 ON = Loopback enabled OFF = Loopback disabled During instances of channel noise, the modem may mistake a received preamble as a request to go into remote digital loopback. Setting SW2-7 to OFF prevents the modem from participating in a remote digital loopback with another modem. SW2-7 does not prevent the modem from sending a remote digital loopback request to a remote modem.
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− SW3-1 Fast Poll Auto Rate/FSK SW3-1 ON = Low-Speed Mode (FSK) OFF = High-Speed Mode (Fast Poll) The modem has two operating modes: FSK mode, which supports data rates from 0 to 1800 bps. Fast-poll mode, which supports data rates of 4800 and 9600 bps. SW3-1, along with the Data Rate Selector (DRS) pin on the modem’s RS- 232 connector, configures the modem for either FSK or fast-poll mode.
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− SW3-3 Async Character (Fast-Poll Mode Only) SW3-3 ON = 11 bits OFF = 10 bits Switch SW3-3 selects whether the async character is 10 or 11 bits long. When the modem is in high-speed fast-poll mode (SW3-1 OFF), setting SW3-3 ON selects an 11-bit async character, while setting SW3-3 OFF selects a 10-bit async character.
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− SW3-7 2-/4-Wire Operation SW3-7 ON = 2-Wire, Half-Duplex Mode OFF = 4-Wire, Full-Duplex Mode SW3-7 configures the modem for 4-wire full-duplex or 2-wire half-duplex operation. − SW3-8 Carrier Control SW3-8 ON = Constant OFF = Switched SW3-8 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.
Installing the Modem After you set the modem’s configuration switches, you can now install it in a slot within an MDR Rack from Raymar-Telenetics. The modem is installed or replaced from the front of the modem cage or modem rack, without disturbing the cable connections on the back. The modem can be installed and removed without having to remove power from the modem cage or modem rack.
Figure 2-4. Modems Installed in the Rack Connecting to a Transmission Line Modular Jack Connectors The rear panel of the modem rack has an 4-pin RJ-11 jack for each slot. After you install the modem into a slot, connect the slot’s corresponding RJ-11 jack to a leased line.
Leased lines have four contacts: a transmit (Tx) pair and a receive (Rx) pair. For communication to occur: The Rx line of the modem cage or modem rack RJ-11 jack must connect to the Tx line of the other modem. The Tx line of the modem cage or modem rack RJ-11 jack must connect to the Rx line of the other modem.
LEDs The front panel of the modem provides the LEDs shown in Table 2-7. Table 2-7. Modem LEDs Color Description Green Power Power Yellow Request To Send Yellow Clear To Send Yellow Transmit Data Yellow Receive Data Yellow Carrier Detect Red* Analog Loopback Red*...
Appendix A Troubleshooting n the event you encounter a problem using your modem, refer to the troubleshooting information in this appendix. To troubleshoot the power supply and backplane on the modem rack, refer to the documentation that came with your modem rack. If you encounter a problem with your modem, be sure the modem switches are IMPORTANT...
Up to 15.0 miles (24 AWG) with TX and RX cable equalizer Operating modes: 2-wire half-duplex or 4-wire full-duplex Modulation: High-speed fast poll – Raymar-Telenetics proprietary FSK, Bell 202T compatible • Mark = 1200 Hz • Space = 2200 Hz •...
Carrier loss recovery: Train on Data Throughput delay: Less than 10 milliseconds for fast polling. Auto RTS: Support DTE without hardware RTS (high speed only) Anti-Streaming: 27-second timer to prevent transmitter lock-up network Mechanical Specifications Dimensions: 7.25 inches deep x 5.25 inches high x .77 inches thick Weight: 4.5 ounces (card only) MD9612FP USER’S GUIDE...
Back-to-Back Connections to a Second Modem Modem 1 Modem 2 See page 24, Figure D-3 RS-232 (RTU) Interface Signal Modem DB25 Description Name Input/Output ⎯ Earth GND Earth Ground Input Transmit Data Output Receive Data Input Request To Send Output Clear To Send Output Data Set Ready (Modem...
Environmental Specifications Operating temperature: -40 to + 85 Storage temperature: -40 to +125 Operating humidity: 5 to 95 %, non-condensing Isolation: 3750 V RMS Surge protection: Leased line up to 15K VA MD9612FP USER’S GUIDE Page 27 0049-1237-XXX REV. A...
Raymar Information Technology, Inc., dba Raymar-Telenetics, warrants their products against defects in hardware, material and workmanship under normal use for one (1) year from the date of purchase. Raymar will, at no charge, either repair the product (with new or reconditioned parts), or replace it (with a new or reconditioned product). Repaired replacement products are warranted for either 90 days or the remainder of the original warranty period, whichever is longer.
Before returning any Raymar-Telenetics product, an RMA number must be obtained. The most convenient way to obtain an RMA number for a product purchased from Raymar-Telenetics is to call 1-800-747-1522. When doing so, please have the following information ready: Company name...
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