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3174/3274 I-Mux
LI NK
PT IC
FI BE R O
RX
TX
RX
TX
PO W ER
PT IC
FI BE R O
TX
RX
TX
PO W ER
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
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INFORMATION
Web site: www.blackbox.com • E-mail: info@blackbox.com
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2
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1
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1
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3 1 7 4 /3 2 7
DA TA
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M UX PO RT
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FEBRUARY 1993
MX330A-C
MX330A-D
4 I- M U X
4 I- M U X
3 1 7 4 /3 2 7
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Related Manuals for Black Box 3174/3274 I-Mux Series
Summary of Contents for Black Box 3174/3274 I-Mux Series
- 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 TRADEMARKS TRADEMARKS ® is a registered trademark of AT&T. ® is a registered trademark of IBM Corporation. Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.
- Page 3 3174/3274 I-MUX FEDERAL COMMUNICATIONS COMMISSION INDUSTRY CANADA RADIO FREQUENCY INTERFERENCE STATEMENT This equipment generates, uses, and can radiate radio frequency energy and if not installed an used properly, that is, in strict accordance with the manufacturer's instructions, may cause interference to radio communication.
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Page 4: Table Of Contents
3174/3274 I-MUX CONTENTS SPECIFICATIONS ............................4 INTRODUCTION ............................5 General Description ........................5 Features............................6 Applications .............................6 Controller-to-Terminal Distance Limitations.................9 2.4.1 Delay Calculations for Configuration 1................9 2.4.2 Delay Calculations for Configuration 2................10 INSTALLATION ............................11 Connection to the Controller.......................11 Fiberoptic Connection (Configuration 1 Only)................11 Copper Connection ........................11 3.3.1 Copper Connection for Configuration 1 ................11 3.3.2... -
Page 5: Specifications
3174/3274 I-MUX 1. Specifications User Channels — Speed — 2.3587 Mbps 3174/3274 Data Format — Maximum Distance — Fiberoptic: 1.9 miles (3 km); Copper: Coax: 0.9 miles (1.5 km), Type 1: 0.7 miles (1.2 km) Indicators— MX330A-C: (5) LEDs: Power, F/O TX, F/O RX, (1) DATA on the Link side, (1) DATA on the Controller Side MX330A-D: (7) LEDs: Power, F/O TX, F/O RX, (1) ERR and (1) DATA on the Link side;... -
Page 6: Introduction
CHAPTER 2: Introduction 2. Introduction 2.1 General Description The Device Side Mux works in conjunction with the Controller Side Mux. It receives a single multiplexed output on fiberoptic, coax, or twisted-pair cable and The 3174/3274 I-Muxes are 19-inch rack - provides one-to-four demultiplexing to recover up mountable units designed for used with IBM ®... -
Page 7: Features
3174/3274 I-MUX 2.2 Features 2.3 Applications Here's what you can expect from both Muxes: The Contrller Side Mux (MX330A-C) can be used in two basic configurations. The Device Side Mux • Both units are designed for use with IBM 3174 (MX330A-D) can be used only in conjunction with and IBM 3274 controllers (with the RPQ 9901 the MX330A-C. - Page 8 CHAPTER 2: Introduction 3174 8-Port Controller Multiplexer 3274 (with RPQ 9901) MX330A-C MX330A-D 0 - 7 0 - 7 Copper 8 - 15 8 - 15 16 - 23 16 - 23 24 - 31 24 - 31 8-Port Multiplexer 7.5 km Figure 2-3.
- Page 9 3174/3274 I-MUX This configuration allows a maximum total distance Configuration 2: between controller and device of about 2.8 miles This configuration consists of the MX330A-C (4.5 km)—see Figure 2-4. and an IBM 3299/32 thirty-two port terminal NOTE multiplexor connected by a coaxial or twisted-pair cable (Type 1, 2, 6, or 9).
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Page 10: Controller-To-Terminal Distance Limitations
CHAPTER 2: Introduction 2.4 Controller-to-Terminal Distance Limitations When: Controller Timeout = 3174 - 50 µsec The IBM controller has a timeout value after trans- 3274 - 56 µsec mitting a message to a terminal. If the response from the terminal is not received within this Data Rate = 424 nsec/bit timeout, the controller ignores it and sends the message to the next terminal. -
Page 11: Delay Calculations For Configuration 2
3174/3274 I-MUX 2.4.2 D When: ELAY ALCULATIONS FOR ONFIGURATION The round-trip propagation time is equal to twice Controller Timeout = 3174 - 50 µsec the time it takes the signal to travel from the 3274 - 56 µsec controller (T c ) through segments X1, X2, and X3, and through multiplexers T1 and T2, plus terminal Data Rate = 424 nsec/bit response time (see Figure 2-6). -
Page 12: Installation
CHAPTER 3: Installation 3. Installation 3.1 Connection to the Controller NOTE Fiberoptic connector pairs between the Connect coaxial cables or twisted-pair cables units must be connected crosswise (TX (Type 1, 2, 6, or 9) between the IBM 3174 or 3274 to RX, or RX to TX). -
Page 13: Connecting To A Power Source
3174/3274 I-MUX 3.5 Connecting to a Power Source NOTE The units' power supply adjusts automatically for operation in the 105 VAC to 230 VAC range. Connect an appropriate power plug to the three power cable wires: • Connect the brown wire to the live terminal. •... -
Page 14: Operation
CHAPTER 4: Operation 4. Operation After installation, the units should operate The front panel of the MX330A-D is shown in unattended. The operational status of the unit Figure 4-2, and the functions of the front panel is indicated by the LEDs on the front panel. components are explained in Table 4-2. - Page 15 3174/3274 I-MUX LINK CONTROLLER PORT FIBER OPTIC COPPER POWER TX RX DATA DATA DATA 3174/3274 I-MUX (Controller Side) Figure 4-1. Front Panel of the MX330A-C. Table 4-1. Front-Panel Components of the MX330A-C. NUMBER DESCRIPTION FUNCTION POWER LED (Red) Lights when the MX330A-C is receiving power. LINK F/O TX LED (Green) Lights during data transmission through the fiberoptic...
- Page 16 CHAPTER 4: Operation LINK MUX PORT FIBER OPTIC COPPER POWER TX RX ERR DATA DATA ERR DATA ERR DATA ERR DATA ERR DATA 3174/3274 I-MUX (Controller Side) 9 10 11 Figure 4-2. Front Panel of the MX330A-D. Table 4-2. Front-Panel Components of the MX330A-D. NUMBER DESCRIPTION FUNCTION...
- Page 17 3174/3274 I-MUX COPPER FIBER Figure 4-3. Rear Panel. Table 4-3. Rear-Panel Components. NUMBER DESCRIPTION FUNCTION Fuse 0.5A, SloBlo Overload protection. Power Socket Connection to AC power source. POWER Switch Turns power on/off: I= ON, O = OFF. COPPER/FIBER Selects Fiberoptic or Copper (coaxial/twisted pair) Slide Switch mode.
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Page 18: Troubleshooting
CHAPTER 5: Troubleshooting 5. Troubleshooting The troubleshooting procedures in this chapter are 5.1.2 F IBEROPTIC AND OPPER ONNECTION ETWEEN arranged according to system configuration. MX330A-C MX330A-D 5.1 Configuration 1 NOTE In Configuration 1, you have fiberoptic and/or The slide switches on both units must copper cable connecting the MX330A-C to the be in the same position, according to MX330A-D. -
Page 19: Fiberoptic Connection Between The Mx330A-Cand Mx330A-D
IBM 3299/32. Make sure the terminal connected to the IBM 3299/32 at one of the addresses corresponding to the controller port is on-line and active. If you have followed the troubleshooting steps above and the problem persists, contact Black Box. - Page 20 ©Copyright 1993. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...