Home

Modem Splitters

1. BLACK BOX eee APRIL 2000 TLO73A R2 TLO73A R3 TLO74A R2 TLO74A R3 BC00702 FA520A R2 Modem Splitters CUSTOMER 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 Oblackbox com MODEM SPLITTERS TRADEMARKS USED IN THIS MANUAL Any trademarks used in this manual are acknowledged to be the property of the trademark owners MODEM SPLITTERS FEDERAL COMMUNICATIONS COMMISSION AND CANADIAN DEPARTM ENT OF COMMUNICATIONS RADIO FREQUENCY INTERFERENCE STATEM ENTS 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 limitsfor 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 operated in a commercial environment Operation of this equipment in a residential area is likely to cause interference in which case the user at his own expense will be required to take whatever measures may be necessary to correct the
2. Servicio El usuario no debe intentar dar servicio al equipo el ctrico m s all alo descrito en las instrucciones de operaci n Todo otro servicio deber ser referido a personal de servicio calificado 9 El aparato el ctrico debe ser situado de tal manera que su posici n no interfiera su uso La colocaci n del aparato el ctrico sobre una cama sof alfombra o superficie similar puede bloquea la ventilaci n no se debe colocar en libreros o gabinetes que impidan el flujo de aire por los orificios de ventilaci n 10 El equipo el ctrico deber ser situado fuera del alcance de fuentes de calor como radiadores registros de calor estufas u otros aparatos incluyendo amplificadores que producen calor 11 El aparato el ctrico deber ser connectado a una fuente de poder s lo del tipo descrito en el instructivo de operaci n o como se indique en el aparato A MODEM SPLITTERS 12 13 14 15 16 17 18 Precauci n debe ser tomada de tal manera que la tierra fisica y la polarizaci n del equipo no sea eliminada 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 atenci n a los contactos y recept culos donde salen del aparato El equipo el ctrico debe ser limpiado nicamente de acuerdo a las recomendaciones del fabricante En caso de existir una antena externa deber ser localizada lejo
3. Send Data Set Ready Signal Ground Received Line Signal Detector Transmitter Signal Element Timing DCE Receiver Signal Element Timing DCE Data Terminal Ready Figure 4 Standard RS 232 Interface Signal Pin Pin Signal Destination Number Number Destination Secondary Transmitted Data 14 8 aes d Eee DCE Transmitter Signal 15 3 Received Data Element Timing 16 4 Request to Send Secondary Received Data 17 5 Clear to Send Receiver Signal Element 18 6 Data Set Ready A uL P 7 Signal Ground Common Return econdary Request to sen 8 Received Line Signal Detector Data Terminal Ready 21 9 Voltage Signal Quality Detector 22 10 Voltage Ring Indicator 23 Data Signal Rate Selector 24 DTE Transmitter Signal 25 Element Timing BE L A 12 Secondary Received Line Signal Indicator 13 Secondary Clear to Send lt BLACK BOX O Copyright 2000 Black Box Corporation All rights reserved 1000 Park Drive Lawrence PA 15055 1018 724 746 5500 Fax 724 746 0746
4. interference Changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment T his digital apparatus does not exceed the Class A limits for radio noise emission from digital apparatus set out in theRadio Interference Regulation of Industry Canada Lepr sent apparel num riquen met pas de bruits radiodectriques d passant les limites applicables aux apparals num riques dela classe A prescrites dans le R glement sur le brouillage radiodectrique publi par Industrie Canada MODEM SPLITTERS NORMAS OFICIALES MEXICANAS NOM ELECTRICAL SAFETY STATEMENT INSTRUCCIONES DE SEGURIDAD 1 Todas las instrucciones de seguridad y operaci n deber n ser le das antes de que el aparato el ctrico sea operado 2 Lasinstrucciones de seguridad y operaci n deber n ser guardadas para referencia futura 3 Todas las advertencias en el aparato el ctrico y en sus instrucciones de operaci n deben ser respetadas 4 Todas las instrucciones de operaci n y uso deben ser seguidas 5 El aparato el ctrico no deber ser usado cerca del agua por ejemplo cerca de latina de ba o lavabo s tano mojado o cerca de una alberca etc 6 El aparato el ctrico debe ser usado nicamente con carritos o pedestales que sean recomendados por el fabricante 7 El aparato el ctrico debe ser montado a la pared o al techo s lo como sea recomendado por el fabricante 8
5. s de las lineas de energia El cable de corriente deber ser desconectado del cuando el equipo no sea usado por un largo periodo de tiempo Cuidado debe ser tomado de tal manera que objectos liquidos no sean derramados sobre la cubierta u orificios de ventilaci n Servicio por personal calificado deber ser provisto cuando A El cable de poder o el contacto ha sido da ado u B Objectos han ca do o l quido ha sido derramado dentro del aparato o C El aparato ha sido expuesto a la lluvia o D El aparato parece no operar normalmente o muestra un cambio en su desempe o o E El aparato ha sido tirado o su cubierta ha sido da ada MODEM SPLITTERS 1 Specifications Interface RS 232 C Configuration MASTER Connector isDTE PORT Connectors are DCE Pins Supported 1 FG 2 TD 3 RD 4 RTS 5 CTS 6 DSR 7 SG 8 DCD 15 TC 17 RC 20 DTR Connectors DB25s female Temperature 32 to 122 F 0 to 50 C H umidity Up to 95 noncondensing Size 7 5 H x 2 5 W x 1 3 D 19 1 x 6 4 x 3 3 cm Weight 2 b 0 9 kg 2 Introduction TheModem Splitter allows an RS 232 C DCE device such as a modem to interface with up to six RS 232 C DTE devices such as terminals The M S 3 will support up to three additional units The MS 6 will support up to six additional units The MASTER port isconfigured DTE and PORTS 1 6are configured DCE No jumpers and or switches are located on the Modem Split
6. t Generally speaking terminals are DTE devices and modems are DCE devices 2 Data coming onto the MASTER port on pin of the Modem Splitter goes to all three or six terminal ports since they are all tied common H owever only only one terminal may transmit data to the modem at any one time The transmit leads pin 2 are not tied common and all terminals are isolated from each other by an OR gate 5 Wiring Configuration Three linesare isolated from each other in the Modem Splitter by OR gates They are asfollows Pin 2 Transmitted Data Pin 4 Request to Send Pin 20 Terminal Ready Figure 2 illustrates the wiring configuration for these leads PORT 1 PORT2 PORT 3 MASTER PORT 4 PORT 5 PORT 6 Figure 2 OR Gate Wiring for Pins 2 4 and 20 Eight other leads are tied straight through and are illustrated in Figure 3 They are as follows Pin 1 Protective Ground Pin 3 Received Data Pin 5 Clear To Send Pin 6 Data Set Ready Pin 7 Signal Ground Pin 8 Received Line Signal Detector Pin 15 Transmitter Signal Element Timing DCE Pin 17 Received Element Signal Timing DCE MODEM SPLITTERS PORT 1 PORT 2 PORT 3 MASTER PORT 4 PORT 5 PORT 6 Figure 3 Configuration for Pins 1 3 5 6 7 8 15 and 17 Table 1 Modem Splitter Pinout Signal Direction Pin EIA Circuit Description to from DCE Protective Ground Transmitted Data Received Data Request To Send Clear To
7. ter See Figure 1 for typical applications A 6 ft DB25 male DB25 female extension cable and a serial AT adapter DB9 female DB25 male are included with the TLO73A R3 TLO74A R3 Modem Splitters If you ordered theTL073A R2 or TLO74A R2 M Splitters you will not recave the cable or the adapte Figure 1 Typical Applications 3 Theory of Operation Signals present on the MASTER connector at pins 1 3 5 6 7 8 15 and 17 are sent to the corresponding pins on each of the PORT connectors Signals present on the PORT connectors at pins 2 4 and 20 are passively stored and sent to the corresponding pinson the MASTER connector 4 Installation The Modem Splitter is a passive device The total length of cable connected to the unit should be less than 50 feet 15 2 m All connectors on the Modem Splitter are DB25s female The Modem Splitter is easily installed into a system by plugging the terminals into the Modem Splitter connectors labeled PORT 1 through PORT 3 or through PORT 6 The cable from the modem connectsto the connector labeled MASTER To ensure proper operation the following guidelines should be followed 1 Theterminal devices connected to the Modem Splitter must be configured as DTE Data Terminal Equipment devices The modem device they will share must be configured as DCE Data Communication Equipment Refer to your terminal or modem installation manual if you are unsure of this requiremen

Modem Splitters

Contents

Download Pdf Manuals

Related Search

Related Contents