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Synchronous Modem Eliminator
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
ME101A-R2
ME102A-R2
ME103A-R2
ME105A-R2
SME–422
SME–V.35
SME–530
SME–X.21
T X D
C T S
D S R
NOVEMBER 1993
ME101AE-R2
ME102AE-R2
ME103AE-R2
ME105AE-R2
S M E
R T S
D C D
P W R
ME101-C
ME102C-R2
ME103C-R2
4 2 2
R X D
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Table of Contents
Related Manuals for Black Box SME-422
Summary of Contents for Black Box SME-422
- 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...
- Page 2 FEDERAL COMMUNICATIONS COMMISSION INDUSTRY CANADA RADIO FREQUENCY INTERFERENCE STATEMENTS This equipment generates, uses, and can radiate radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer’s instructions, may cause interference to radio communication. It has been tested and found to comply with the limits for a Class A computing device in accordance with the specifications in Subpart J of Part 15 of FCC rules, which are designed to provide reasonable protection...
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Page 3: Table Of Contents
2.3 Power Supply ..................5 2.4 Guidelines for Cable Length ..............5 3. Configuration ....................6 4. Installation ....................19 5. Troubleshooting ..................20 5.1 Calling Black Box ................20 5.2 Shipping and Packaging ..............20 Appendix: Connector Pinouts ................. 21... -
Page 4: Specifications
CHAPTER 1: Specifications 1. Specifications System Requirements — SME–422 card (ME101-C) only: RM011 or compatible rack; SME–V.35 card (ME102C-R2) and SME–530 card (ME103C-R2) only: RM060 or compatible rack Interface — SME–422: EIA RS-449/RS-422 SME–V.35: CCITT V.35 SME–530: EIA RS-530 SME–X.21: CCITT X.21 Clock —... - Page 5 SYNCHRONOUS MODEM ELIMINATORS SME–422, –V.35, –530, –X.21 SME–422: (2) DB37 female SME–V.35: (2) 34-pin M-block female SME–530: (2) DB25 female SME–X.21: (2) DB37 female; provided with (2) adapter cables, DB37 male to DB15 female Power — 120-VAC standalone models: From wallmount power supply PS146: Optimal input: 115 VAC, 60 Hz at 100 mA;...
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Page 6: Introduction
CHAPTER 2: Introduction 2. Introduction 2.1 Overview With a Synchronous Modem Eliminator (SME), you can establish communication between two synchronous devices (terminals, CPUs, etc.) at greater distances than would be possible without an SME, without having to buy a modem or line driver. We offer four different SME models, one for each of four different synchronous interfaces: •... -
Page 7: Led Indicators
SYNCHRONOUS MODEM ELIMINATORS SME–422, –V.35, –530, –X.21 Length of Cable; 422 Interface specified SME–422, SME–V.35, or SME-422 REMOTE SME–530 CONTROLLER MINI, OR MAINFRAME MAINFRAME OR MINI SME–X.21 MAINFRAME MAINFRAME COMPUTER COMPUTER Figure 2-1. Typical SME applications. 2.2 LED Indicators The six LED indicators on the front panel of the SMEs function as follows: 2.3.1 T... -
Page 8: Power Supply
CHAPTER 2: Introduction 2.3.5 P (PWR) OWER Lit when power is applied to the unit (that is, when the unit’s power supply is working and is plugged into a working outlet). 2.3.6 D (DCD) (RLSD) ARRIER ETECT ECEIVE IGNAL ETECT SME–422: Lit when the device connected to J1 raises RTS. -
Page 9: Configuration
SYNCHRONOUS MODEM ELIMINATORS SME–422, –V.35, –530, –X.21 3. Configuration The pages that follow this one contain charts and diagrams that will help you configure your SME: • Tables 3-1 through 3-4 discuss the possible settings of the individual straps (jumpers) inside each SME model. Use the straps to configure several different options for your SME. - Page 10 CHAPTER 3: Configuration Table 3-1. SME–422 Strap Settings STRAP FUNCTION This strap is used to tie the chassis ground and signal ground together. The unit comes from the factory without the grounds tied common. Incoming Call (IC) on J1 (Pin 15) is connected to either ground (A-B) or +5V (B-C).
- Page 11 SYNCHRONOUS MODEM ELIMINATORS SME–422, –V.35, –530, –X.21 Table 3-1. SME–422 Strap Settings (cont.) STRAP FUNCTION In the A-B position, Receiver Ready on J1 (Pins 13 and 31) is derived from Request to Send on J2 (Pins 7 and 25). In the B-C position, Receiver Ready on J1 is connected to Signal Ground and is constantly held ON.
- Page 12 CHAPTER 3: Configuration Table 3-2. SME–V.35 Strap Settings STRAP FUNCTION This strap is used to tie the chassis ground (Pin A) and signal ground (Pin B) together. The unit comes from the factory without the grounds tied common. Sets the Clear to Send delay on J2: Position A = 0 ms (no delay) Position B = 10 ms Position C = 50 ms...
- Page 13 SYNCHRONOUS MODEM ELIMINATORS SME–422, –V.35, –530, –X.21 Table 3-3. SME–530 Strap Settings STRAP FUNCTION This strap is used to tie the chassis ground (Pin 1) and signal ground (Pin 19) together. The unit comes from the factory without the grounds tied common.
- Page 14 CHAPTER 3: Configuration Table 3-3. SME–530 Strap Settings (cont.) STRAP FUNCTION In the A-B position, Received Line Signal Detector (RLSD) on J1 (Pins 8 and 10) is derived from Request to Send on J2 (Pins 4 and 19). In the B- C position, RLSD on J1 is constantly held ON.
- Page 15 SYNCHRONOUS MODEM ELIMINATORS SME–422, –V.35, –530, –X.21 Table 3-4. SME–X.21 Strap Settings STRAP FUNCTION This strap is used to tie the chassis ground (Pin 1) and signal ground (DB37 Pin 19, DB15 Pin 8) together. The unit comes from the factory without the grounds tied common.
- Page 16 CHAPTER 3: Configuration Table 3-5. Data-Rate-Switch Settings, Std. 5.376-MHz Crystal* DATA SWITCH S1 SWITCH S2 RATE POSITION POSITION (bps) 1200 2400 4800 9600 19200 38400 48000 56000 64000 76800 84000 96000 112000 128000 192000 224000 336000 384000 448000 896000 1344000 *Only the most popular of the speeds that standard SMEs can reach are listed here.
- Page 17 SYNCHRONOUS MODEM ELIMINATORS SME–422, –V.35, –530, –X.21 Table 3-6. Data-Rate-Switch Settings, Special 4.9152-MHz Crystal* DATA SWITCH S1 SWITCH S2 RATE POSITION POSITION (bps) 1200 2400 4800 9600 12800 19200 25600 38400 51200 76800 102400 153600 204800 307200 409600 614400 819200 1228800 *To enable them to reach certain normally unsupported speeds, we can modify SMEs at our factory by swapping in special replacement clock crystals.
- Page 18 CHAPTER 3: Configuration Table 3-7. Data-Rate-Switch Settings, Special 6.144-MHz Crystal* DATA SWITCH S1 SWITCH S2 RATE POSITION POSITION (bps) 1200 2400 4800 9600 19200 38400 48000 64000 76800 96000 128000 153600 192000 256000 307200 384000 512000 614400 768000 1024000 1536000 *(See the note on the previous page.) Only the most popular of the speeds that SMEs with the 6.144-MHz customization can reach are listed here.
- Page 19 SYNCHRONOUS MODEM ELIMINATORS SME–422, –V.35, –530, –X.21 Figure 3-1. SME–422 and SME–X.21 Printed-Circuit-Board Layout.
- Page 20 CHAPTER 3: Configuration Figure 3-2. SME–V.35 Printed-Circuit-Board Layout.
- Page 21 SYNCHRONOUS MODEM ELIMINATORS SME–422, –V.35, –530, –X.21 Figure 3-3. SME–530 Printed-Circuit-Board Layout.
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Page 22: Installation
CHAPTER 4: Installation 4. Installation To install your SME after you’ve finished configuring it: Card units only: 1. Slide the card into an available slot on a compatible rack (our product code RM011 for SME–422 units or RM060 for SME–V.35 or SME–530 units). -
Page 23: Troubleshooting
5.1 Calling Black Box If you determine that your SME is malfunctioning, do not attempt to alter or repair the unit. Contact Black Box Technical Support at 724-746-5500. The problem may be solvable over the phone. Before you do, make a record of the history of the problem. We will be... -
Page 24: Appendix: Connector Pinouts
APPENDIX: Connector Pinouts Appendix: Connector Pinouts Any signal or pin designation that does not appear in one of the following charts is not supported by the corresponding SME. Table A-1. SME–422: Pinout for DB37 Connectors J1 and J2 SIGNAL DESCRIPTION SIGNAL TYPE DIRECTION ——... - Page 25 SYNCHRONOUS MODEM ELIMINATORS SME–422, –V.35, –530, –X.21 Table A-2. SME–V.35: Pinout for 34-Pin Connectors J1 and J2 SIGNAL DESCRIPTION SIGNAL TYPE DIRECTION Frame (Protective) Ground Ground —— Signal Ground Ground —— Request to Send Control To DCE Clear to Send Control From DCE Data Set Ready...
- Page 26 APPENDIX: Connector Pinouts Table A-3. SME–530: Pinout for DB25 Connectors J1 and J2 SIGNAL DESCRIPTION SIGNAL DIRECTION TYPE —— Shield Ground —— SD (A) Transmitted Data (A) Data From Terminal RD (A) Receive Data (A) Data To Terminal RS (A) Request to Send (A) Control From Terminal...
- Page 27 SYNCHRONOUS MODEM ELIMINATORS SME–422, –V.35, –530, –X.21 Table A-4. SME–X.21: Pinout for DB37 Connectors J1 and J2 SIGNAL DESCRIPTION SIGNAL TYPE DIRECTION —— Shield Ground —— T (A) Transmit (A) Data To DCE S (A) Signal Element Timing (A) Timing From DCE R (A) Receive (A)
- Page 28 © Copyright 1993. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...
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