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5

MINI DRIVER MPI 

You can strap the Mini Driver MPI to be either
constantly on, or to be controlled by the Request to
Send signal. Operation with controlled carrier
enables the connection of the Mini Driver MPI in a
multipoint configuration (see Figure 1). You can also
use controlled carrier in applications requiring the
passing of a control signal end-to-end—the RTS one
one Mini Driver MPI is passed to the DCD on the
other unit.

Figure 1. Mini Driver MPI In A Multipoint Application

The Mini Driver MPI features a switch selectable
DTE/DCE option. The unit can operate as a DTE
in order to connect to another DCE, such as a
multiplexer port, without the use of cross cable.
You can operate the Mini Driver MPI without

Async Host

Async Terminals

Mini

Driver

MPI

OFFICE COMPLEX

Building A: 

MIS DEPT. 

Building B:

ACCT. DEPT

Up to seven

drops

4-Wire Unshielded

twisted-pair cable

Summary of Contents for ME761A-F

Page 1: ...S Call 877 877 BBOX outside U S call 724 746 5500 FREE technical support 24 hours a day 7 days a week Call 724 746 5500 or fax 724 746 0746 Mailing address Black Box Corporation 1000 Park Drive Lawre...

Page 2: ...n 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 interference Changes or modifi...

Page 3: ...vabo 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...

Page 4: ...ontactos y recept culos donde salen del aparato 14 El equipo el ctrico debe ser limpiado nicamente de acuerdo a las recomendaciones del fabricante 15 En caso de existir una antena externa deber ser lo...

Page 5: ...bps Operation 4 wire full or half duplex point to point or multipoint Interface RS 232 CCITT V 24 Connectors 1 DB25 male or female 1 5 screw terminal block Power From RS232 interface 6 VDC on pins 2 4...

Page 6: ...mi 0 75 mi 0 5 mi 1 6 km 1 2 km 0 8 km 2 Introduction The Mini Driver MPI asynchronous line driver is used for local data distribution It connects full or half duplex asynchronous terminals to compute...

Page 7: ...ntrol signal end to end the RTS one one Mini Driver MPI is passed to the DCD on the other unit Figure 1 Mini Driver MPI In A Multipoint Application The Mini Driver MPI features a switch selectable DTE...

Page 8: ...constantly low Transmit Data Low transmit level minimizes cross talk onto adjacent circuits within the same cable Data is transmitted and received at a balanced impedance ensuring excellent immunity...

Page 9: ...o RCV Please note the correct polarities If you are using shielded cables connect the cable shield to the ground terminal optional 3 The following polarity must be observed XMT on the local Mini Drive...

Page 10: ...ee Figure 2 6 To close the unit press the two halves of the cover together 7 Plug the unit directly into the 25 pin connector of the terminal or computer port and fasten with the screws on each side o...

Page 11: ...9 MINI DRIVER MPI DCE DTE Switch Schematics DTE Position DCE Position TD 2 TD 2 RD 3 RD 3 RTS 4 RTS 4 DCD CIRCUIT CTS 5 CTS 5 DSR 6 V DSR 6 DCD 8 DCD CIRCUIT DCD 8 DTR 20 DTR 20 V delay...

Page 12: ...1000 Park Drive Lawrence PA 15055 1018 724 746 5500 Fax 724 746 0746 Copyright 1996 Black Box Corporation All rights reserved...

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