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MultiMode FOMs -ST and -SMA
CUSTOMER
Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX
FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746
SUPPORT
Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
INFORMATION
Web site: www.blackbox.com • E-mail: info@blackbox.com
R D
T D
R
P O W E
MD640AE-SMA-R2
M u l t i M
T e s t
M o d e s
C D
R T S
FEBRUARY 1996
MD640A-ST-R2
MD640A-SMA-R2
MD640AE-ST-R2
M
o d e F O
t e
R e m o
l
N o r m a
L o c a l
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Table of Contents
Related Manuals for Black Box MD640A-ST-R2
Summary of Contents for Black Box MD640A-ST-R2
- Page 1 Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 SUPPORT Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 INFORMATION Web site: www.blackbox.com • E-mail: info@blackbox.com...
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Page 2: Table Of Contents
5. Operation ....................10 5.1 LED Indicators .................. 10 5.2 Power-Up ................... 11 5.3 Loopback-Test Modes ............... 11 5.4 Power-Down ..................12 6. Troubleshooting ..................13 6.1 Calling Black Box ................13 6.2 Shipping and Packaging ..............13 Appendix: RS-232 Pinout ................14... - Page 3 MULTIMODE FOMS -ST AND -SMA TRADEMARKS USED IN THIS MANUAL ST is a registered trademark of AT&T. Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.
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Page 4: Specifications
CHAPTER 1: Specifications 1. Specifications Cable Required — (1) Multimode fiberoptic cable, 62.5-µm core EIA RS-232/CCITT V.24, DCE Interface — Protocols — Asynchronous or synchronous Clock — Internal or external from attached RS-232 device Flow Control — Transparent hardware (RTS/CTS and DTR/DSR passed through from DTE) or local hardware or software (RTS/CTS or X-ON/X-OFF), user- selectable... - Page 5 MULTIMODE FOMS -ST AND -SMA Indicators — (6) Front-mounted LEDs: TD, RD, RTS, CTS, Power, Test Diagnostics — Local and remote loopback Connectors — (3) Rear-mounted: (1) DB25 female; (1) Barrel-type power jack; Units with “-ST” suffix: (1) ST female; Units with “-SMA”...
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Page 6: Introduction
CHAPTER 2: Introduction 2. Introduction MultiMode FOMs are fiberoptic short-range modems with a special money- saving edge. Many other fiberoptic modems can’t transmit and receive data through the same port, so they use cables with two fibers. MultiMode FOMs communicate with each other over a much less expensive single-fiber cable, across distances of as much as 5 km (3.1 miles). -
Page 7: Description
MULTIMODE FOMS -ST AND -SMA 2.2 Description The MultiMode FOM is a fiberoptic short-range modem for point-to-point RS-232 communication over a single 62.5-µm fiber, such as one of those bundled into our bulk multifiber cables EFN1004 and EFN1006. The FOM supports synchronous data rates up to 256 Kbps, and asynchronous data rates up to 38.4 Kbps. -
Page 8: Configuration
CHAPTER 3: Configuration 3. Configuration With the MultiMode FOM’s external DIP switch, you can configure the unit for many different combinations of data rates and clocking methods for synchronous or asynchronous applications. (Since the FOM has no internal jumpers or other internal controls, you don’t have to open the unit’s case to configure the unit.) Figures 3-1 and 3-2 below and Table 3-1 on the next page show the location of the switch and the switch positions’... - Page 9 MULTIMODE FOMS -ST AND -SMA Table 3-1. Summary of Switch Settings, Showing Factory Defaults Position Function Factory Default RESERVED Data Rate (Sync Mode) Data Rate (Sync Mode) 0 to 19.2 Data Rate (Sync Mode) Async (2X) Data Rate (Sync Mode) Reset Operating Mode Handshaking...
- Page 10 CHAPTER 3: Configuration Table 3-2. Possible Settings of DIP Switch Positions 2 Through 5 Pos. 2 Pos. 3 Pos. 4 Pos. 5 Data Rate (Sync. Mode) Async 0 to 19.2 Kbps (2X) Async 0 to 38.4 Kbps (1X) Sync at 2.4 Kbps (1X) Sync at 9.6 Kbps (1X) Sync at 9.6 Kbps (2X) Sync at 19.2 Kbps (1X)
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Page 11: Installation
MULTIMODE FOMS -ST AND -SMA 4. Installation The MultiMode FOM is easy to install. After configuring the DIP switch, simply connect the single-fiber and RS-232 cable to the FOM, plug the power supply’s output cord into the unit, and plug the power supply into an outlet. Figure 4-1 shows the location of the interface connections on the MultiMode FOM’s rear panel. -
Page 12: Rs-232 Connection
CHAPTER 4: Installation 4.2 RS-232 Connection To connect the MultiMode FOM to a DTE (Data-Terminal Equipment: a PC, host, terminal, etc.), use a straight-through RS-232 cable. To connect the MultiMode FOM to a DCE (Data-Communications Equipment: a modem, multiplexor, etc.), use a cross-pinned RS-232 cable of the null-modem type. Whether the cable is straight-through or cross-pinned, it must have a male DB25 connector on the FOM end. -
Page 13: Operation
MULTIMODE FOMS -ST AND -SMA 5. Operation Once you have configured each MultiMode FOM properly (see Chapter 3) and installed them and their fiber and RS-232 cables (see Chapter 4), you are ready to operate the units. This chapter describes how to (a) interpret the LED indicators, (b) power the units up and down, and (c) use the built-in loopback-test modes. -
Page 14: Power-Up
CHAPTER 5: Operation 5.2 Power-Up Apply AC power to the MultiMode FOM by first plugging the output cord of the FOM’s power supply into the rear-panel power jack, then plugging the power supply’s input cord into a working AC power outlet. This should activate the unit immediately—the FOM has no power switch—and the “Power”... -
Page 15: Power-Down
MULTIMODE FOMS -ST AND -SMA C. Perform a BERT (bit error rate) test on each FOM. If the BERT test doesn’t uncover any faults, but the RS-232 device still indicates a fault, follow the manufacturer’s suggested diagnostic procedures for the RS-232 device. -
Page 16: Troubleshooting
• If you are shipping the FOM for repair, make sure you include its power supply. If you are returning the FOM, make sure you include its manual as well. Before you ship, contact Black Box to get a Return Materials Authorization (RMA) number. -
Page 17: Appendix: Rs-232 Pinout
MULTIMODE FOMS -ST AND -SMA Appendix: RS-232 Pinout The figure below shows the pinout of the MultiMode FOM’s rear-mounted RS-232 port (DB25 female connector). DIRECTION STANDARD DCE SETTING DIRECTION (FG) Frame Ground (TD) Transmit Data To FOM From FOM Transmitting Timing (RD) Receive Data From FOM (RTS) Request to Send... - Page 18 © Copyright 1996. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...
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