Related Manuals for Black Box MT160A
Summary of Contents for Black Box MT160A
- Page 1 © Copyright 1999. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...
- Page 2 Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX SUPPORT FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 INFORMATION Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.blackbox.com • E-mail: info@blackbox.com...
- Page 4 TRADEMARKS TRADEMARKS USED IN THIS MANUAL AT&T is a registered trademark of AT&T. MCI is a registered trademark of MCI Telecommunications Corporation. Sprint is a registered trademark of U.S. Sprint Communications Ltd. Any trademarks used in this manual are acknowledged to be the property of the trademark owners.
- Page 5 MicroCSU/DSU Cards and MicroRacks 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 against such interference when the equipment is...
- Page 6 NOM STATEMENT NORMAS OFICIALES MEXICANAS (NOM) ELECTRICAL SAFETY STATEMENT INSTRUCCIONES DE SEGURIDAD 1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato eléctrico sea operado. 2. Las instrucciones de seguridad y operación deberán ser guardadas para referencia futura.
- Page 7 MicroCSU/DSU Cards and MicroRacks 12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización del equipo no sea eliminada. 13. Los cables de la fuente de poder deben ser guiados de tal manera que no sean pisados ni pellizcados por objetos colocados sobre o contra ellos, poniendo particular atención a los contactos y receptáculos donde salen del aparato.
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Page 8: Table Of Contents
CONTENTS Contents Chapter Page 1. Specifications ......................6 2. Introduction ......................10 2.1 Overview ....................10 2.2 Features......................11 3. Before You Begin ....................12 3.1 Dedicated DDS Configuration ..............12 3.2 Campus Area Short-Haul Configuration ..........12 3.3 Network Interface Connection ..............12 4. Configuration ......................13 4.1 Front-Panel LEDs ..................13 4.2 Source of Configuration ................14 4.2.1 Hardware Switches ................15 4.2.2 Software Switches ................21... -
Page 9: Specifications
DTE Rates — 2.4, 4.8, 9.6, 19.2, 38.4, 56, 57.6, and 64 Kbps Leads Supported — MT160A, MT161C-V35: B, C, D, E, F, H, L, M, N, P, R, S, T, U, V, W, X, Y, AA; MT161C-25: 1–9, 11, 12, 14–18, 20, 21, 24, 25 Control Port —... - Page 10 Storage Temperature — -40° to 176°F (-40° to 80°C) Humidity — Up to 95%, noncondensing Size — MT160A: 2.5"H x 5"W x 1"L (6.4 x 12.7 x 2.5 cm); MT161C-25, MT161C- V35: 2.5"H x 4.5"W x 1"L (6.4 x 11.4 x 2.5 cm) Weight —...
- Page 11 MicroCSU/DSU Cards and MicroRacks Power Supply (PS460AE) Power Source — Internal Fuses — (4) Included (2 in the drawer and 2 spares) Input Voltage — 115 or 230 volts AC, autosensing Power Supply (PS461A) Power Source — Internal Input Voltage — 48 volts DC Input Connector Type —...
- Page 12 CHAPTER 1: Specifications OWER UPPLY Cage-clamp terminal block with +DC In, -DC In, Frame Connection — Ground, Alarm, Alarm C, +DC Out, -DC Out Wire — 26-14 solid or stranded cable Opens when power is attached and closes when power Alarm —...
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Page 13: Introduction
In order for your MicroCSU/DSU to function properly, you will need one front card (MT160A), one rear card (MT161C-25 or MT161C-V35), one power supply (PS460A, PS461A, PS462A, or PS463A), and one MicroRack (RM202, RM204, RM208, or RM216). -
Page 14: Features
CHAPTER 2: Introduction Code Product Name MT160A MicroCSU/DSU Front Card MT161C-25 MicroCSU/DSU DB25 Rear MT161C-V35 MicroCSU/DSU V35 Rear PS460A MicroRack AC Power Supply PS461A MicroRack 48-VDC Power Supply PS462A MicroRack 24-VDC Power Supply PS463A MicroRack 12-VDC Power Supply RM202 MicroRack 2... -
Page 15: Before You Begin
MicroCSU/DSU Cards and MicroRacks 3. Before You Begin This chapter describes how to install the MicroCSU/DSU for dedicated operation or for use as a campus-area short-haul modem. 3.1 Dedicated DDS Configuration The MicroCSU/DSU can easily be configured for dedicated DDS operation by means of the DIP switches on the bottom of the enclosure. -
Page 16: Configuration
CHAPTER 4: Configuration 4. Configuration Before you can operate your MicroCSU/DSU, you must configure the unit. This chapter describes reading the LED status monitors, setting the DIP switches, and using the control port. 4.1 Front-Panel LEDs There are ten front-panel status LEDs that indicate the condition of the CSU/DSU and the communication link. -
Page 17: Source Of Configuration
MicroCSU/DSU Cards and MicroRacks • POWER will glow red when the proper power is applied to the rack. • TD and RD will glow red to indicate an Idle condition or Binary “1” data on the respective terminal interface signals. Green indicates Binary “0” data. •... -
Page 18: Hardware Switches
CHAPTER 4: Configuration 4.2.1 H ARDWARE WITCHES It is possible to override the Soft Switches and force the unit to use the Hardware Switches. To do this, powerup the unit once with the Line Rate (SW1-1, 1-2, 1-3) set to OFF, OFF, OFF. Then set the Hardware Switches as you require and powerup the unit again. - Page 19 MicroCSU/DSU Cards and MicroRacks Figure 3. Close-up of DIP switches showing ON/OFF positions. ERMINAL NTERFACE The MicroCSU/DSU supports RS-232 and V.35 terminal interface electrical specifications by means of an interface driver board. Install this board by observing the markings “This side up for RS-232,” “This side up for V.35,” and “Front.” (The arrow should point toward the front panel.) WITCH The configuration switches on switch set 1 (SW1) allow you to specify Line Rate,...
- Page 20 CHAPTER 4: Configuration Line Rate These switches control the signaling rate on the line or RJ-48S port of the unit. They should be set to match the speed of your digital service. SW1-1 SW1-2 SW1-3 Setting 2.4 Kbps 4.8 Kbps 9.6 Kbps 19.2 Kbps 56 Kbps...
- Page 21 MicroCSU/DSU Cards and MicroRacks Character Length In asynchronous data format, 10- and 11-bit characters are supported. This setting is ignored in synchronous data format. Character Description SW1-6 Character Length Start Data bits Parity Stop bits 10-bit None 1 or more 1 or more None 11-bit...
- Page 22 CHAPTER 4: Configuration WITCH The configuration switches on switch set 2 (SW2) control the Rate Converter, Loop Control from Terminal, Mode of Operation, Anti-Stream Timer, and CTS Delay. Table 2 summarizes SW2 switch settings, including the factory defaults. Following Table 2 is a description of each switch setting. SWITCH SET 2 SUMMARY Position Function...
- Page 23 MicroCSU/DSU Cards and MicroRacks Mode The mode of operation, Switched or Dedicated, is selected with these switches. The appropriate transmitter clocking modes can be selected for Dedicated DDS or campus-area (private) operation. SW2-5 SW2-6 Mode Description External Clock Mode Transmit Clock derived from terminal interface Network Clock Mode Transmit Clock derived from...
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Page 24: Software Switches
CHAPTER 4: Configuration 4.2.2 S OFTWARE WITCHES The MicroCSU/DSU Front Card has an internal control port that allows software configuration. Control port signals are carried to each card in the rack along the power bus board inside the rack chassis. Access to all rack card control ports is provided by a single control card. - Page 25 MicroCSU/DSU Cards and MicroRacks Using the Software Menu System The Menu System operates as follows: 1. All selections must be followed by [RETURN]. 2. To make a selection from any menu, enter the option number at the prompt and press [RETURN]. 3.
- Page 26 CHAPTER 4: Configuration Setting Software Switch Parameters From the Main Menu, selecting item 3, “Set Software Switch Parameters” will take you to the Software Switch Menu (below). From this screen, you can soft configure the Card parameters. SOFTWARE SWITCH MENU—Esc to exit 1.
- Page 27 MicroCSU/DSU Cards and MicroRacks LINE RATE MENU—Esc to exit 1. 2400 bps 4. 19.2 Kbps 2. 4800 bps 5. 56 Kbps (DEFAULT) 3. 9600 bps 6. 64 Kbps Figure 7. Line Rate Menu. Circuit Assurance Choosing option 2 in the Software Switch Menu takes you to the Circuit Assurance Menu.
- Page 28 CHAPTER 4: Configuration Character Length Choosing option 4 in the Software Switch Menu takes you to the Character Length Menu. In asynchronous data format, the Card supports 10-bit and 11-bit character lengths. Set this option according to the characteristics of the data being transmitted.
- Page 29 MicroCSU/DSU Cards and MicroRacks DSR Status During Local Loopback Choosing option 6 inn the Software Switch Menu takes you to the DSR Loop Status Menu. This option controls the behavior of the DSR output during local loopback. To force DSR high (ON) during local loopback, enable this option. To force DSR low (OFF) during a local loopback, disable it.
- Page 30 CHAPTER 4: Configuration NOTE For DTE data rates of 56 Kbps or 64 Kbps, set the rate adapter to “Line Rate=DTE Rate,” and set the Line Rate to 56 or 64 Kbps, respectively. For DTE rate of 57.6 Kbps, set rate adapter to “Line Rate=DTE Rate,” set line rate to 56 Kbps, set DTE for two stop bits, and set CSU/DSU character length to “11 bits.”...
- Page 31 MicroCSU/DSU Cards and MicroRacks Set this option as follows: • Internal (Master): To use the Card internal reference clock as the timing source, select item 1. Use internal timing in point-to-point applications where the Card is being used as a limited distance modem. (Set the far-end Card for looped timing as described below.) •...
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Page 32: Rear Card Configuration
CHAPTER 4: Configuration RTS/CTS Delay Choosing option “b” in the Software Switch Menu takes you to the RTS/CTS Delay Menu. This option lets you set the RTS/CTS turn-on delay to Normal or Extended. The delay interval decreases as the line rate increases. RTS/CTS DELAY MENU—Esc to exit 1. - Page 33 MicroCSU/DSU Cards and MicroRacks Prior to installation, you will need to examine the rear card you have selected and make sure it is properly configured for your application. Each rear card is configured by setting straps located on the PC board. To configure the rear cards, you must set the configuration straps.
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Page 34: Microcsu/Dsu Db25 Rear Strap Settings
CHAPTER 4: Configuration 4.3.1 M CSU/DSU DB25 R ICRO TRAP ETTINGS Figure 20 shows strap locations for the MicroCSU/DSU DB25 Rear (DB25/RJ- 48S). These straps determine various grounding characteristics for the terminal interface and twisted-pair lines. (Not Used) (Peg 1 on top) (Peg 1 on left) Figure 20. -
Page 35: Microcsu/Dsu V35 Rear Strap Settings
MicroCSU/DSU Cards and MicroRacks DTE Shield (Pin 1) & FRGND (JB3) In the connected position, this strap links DB25 pin 1 and frame ground. In the open position, pin 1 is “lifted” from frame ground. Position 1 & 2 = DTE Shield (Pin 1) and FRGND Connected Position 2 &... - Page 36 CHAPTER 4: Configuration SGND & FRGND (JB4) In the connected position, this strap links Signal Ground and Frame Ground. Position 1 & 2 = SGND and FRGND Connected Position 2 & 3 = SGND and FRGND Not Connected...
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Page 37: Installation
MicroCSU/DSU Cards and MicroRacks 5. Installation This chapter describes the functions of the MicroRack chassis, tells how to install front and rear MicroCSU/DSU cards into the chassis, and provides diagrams for wiring the interface connections correctly. The MicroRacks come with two, four, eight, or sixteen short-range modem card slots, plus its own power supply. - Page 38 CHAPTER 5: Installation Rear (Power Entry) Card Installation 1. Attach the ground wire using the star washer and the #6-32 nut. Use a wrench to tighten the nut securely. 2. Slide the power entry card into the back of the chassis along the metal guide rails provided.
- Page 39 MicroCSU/DSU Cards and MicroRacks 1. Strip back the insulation on each of the wires about a quarter of an inch. 2. Use a small flatblade screwdriver to open the cage clamp as shown in Figure 3-2. Insert the stripped portion of the wire into the opening and remove the screwdriver.
- Page 40 CHAPTER 5: Installation 3) Note that there are two fuses in the drawer. The front fuse is the spare, and the rear fuse is the “active” fuse. 4) If the active fuse appears to be blown, remove it from the clips and replace it with the spare from the front compartment.
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Page 41: Dds Testing
MicroCSU/DSU Cards and MicroRacks 6. DDS Testing The MicroCSU/DSU offers three tests to evaluate the condition of the CSU/DSUs and the communication link: local analog loopback testing, remote digital loopback testing, and telco testing. This section describes how to utilize each of these test modes. -
Page 42: Remote Digital Loopback Testing
CHAPTER 6: DDS Testing 6.2 Remote Digital Loopback Testing The Remote Digital Loopback (RDL) test checks the performance of both the local and remote MicroCSU/DSUs, and the communication link between them. Any characters sent to the remote MicroCSU/DSU in this test mode will be returned back to the originating device. -
Page 43: Ber Test Generator
MicroCSU/DSU Cards and MicroRacks 6.3 V.52 BER Test Generator The MicroCSU/DSU has a built-in test pattern generator and detector. It can be invoked at both ends of a link simultaneously, or it can be used with the Local Analog or Remote Digital Loopback. The following example requires two operators: one to initiate and monitor the test at the local MicroCSU/DSU modem, and one at the remote MicroCSU/DSU modem. -
Page 44: Csu Loop
CHAPTER 6: DDS Testing 6.4.1 CSU L The CSU Loop is activated when the central office reverses the DC sealing current that flows between the TX pair and the RX pair. In this case, the MicroCSU/DSU recognizes this and loops signals on the RX pair back to the central office on the TX pair. -
Page 45: Appendix A. Cable Recommendations
MicroCSU/DSU Cards and MicroRacks Appendix A. Cable Recommendations The MicroCSU/DSU has been tested using twisted-pair cable with the following characteristics: Wire Gauge Capacitance Resistance 19 AWG 83nf/mi or 15.72 pf/ft. 0.0163 ohms/ft. 22 AWG 83nf/mi or 15.72 pf/ft. 0.0326 ohms/ft. 24 AWG 83nf/mi or 15.72 pf/ft. -
Page 46: Appendix B. Interface Pin Assignment
APPENDIX B: Interface Pin Assignment Appendix B. Interface Pin Assignment B.1 DDS Interface The DDS Interface is an RJ-48S modular jack. Pin # Signal No connection No connection No connection No connection B.2 M/34 Connector, Terminal Interface Pin # Signal SGND (Signal Ground) LL (Local Loop) TM (Test Mode) -
Page 47: Db25 Connector, Terminal Interface
MicroCSU/DSU Cards and MicroRacks M/34 Connector, Terminal Interface (continued) XTC/ B.3 DB25 Connector, Terminal Interface Pins are assigned according to RS-232E and EIA-530 standards. Pin # Signal Frame Ground SGND (Signal Ground) /XTC LL (Local Loop) RL (Remote Loop) TM (Test Mode) -
Page 48: Appendix C. Transmitter Clock Source During Test Loops
APPENDIX C: Transmitter Clock Source During Test Loops Appendix C. Transmitter Clock Source During Test Loops Clock Analog Originating Receiving Mode Normal Loop Remote Loop Remote Loop Internal External Network RC = Receive Clock...