GE IS200SAMBH1A buffer

Description

GE General Electric Technical Specifications: IS200SAMBH1A

MK3887 Z80-S10 IS200SAMBH1A which provides both full- and half-duplex

operation. Each channel has an independent program

mable baud rate clock generator to increase module

flexibility.

IS200SAMBH1A Figure 2 is a block diagram of the MDX-4221 module. The

figure consists of six main elements: address decode and

data bus buffers, MK3887 Z80-SIO, isolated supply voltage,

line drivers and receivers, programmable baud rate

generator and channel configuration headers. Input and

output to the board is provided via two 10-pin connectors.

One connector is dedicated for each channel. Figure 1

shows the board with overlay.

The IS200SAMBH1A RS-422 interface on the MDX-4221 module is fully

isolated up to 400 volts above and below ground. This is

implemented to ensure protection from common mode

ground potentials associated with long-distance communi

cations. The transmitter/receiver section also has protec

tion against transients of up to 150 watts peak pulse power

for 1 ms. These transients are IS200SAMBH1A commonly induced on the

transmission lines in noisy industrial environments.

The MDX-422N is a dual-channel, serial RS-422’interface

for use with MDX microcomputer systems. The module

incorporates RS-422 (balanced, differential) serial com

munication, allowing long-distance communication

in

noisy industrial environments between MDX-422’s and

MDX-422N’s and/or RSCU’s (Serial Control Units). Each

MDX-422N channel is capable of driving forty devices in a

party-line configuration. The module is designed around the

Mostek MK3887 Z80-S10 which provides both full- and

l1alf-duplex operation. Each channel has an independent

programmable baud rate clock· generator to increase

module flexibility.

Figure 2 is a block diagram of the MDX-422N module. The

device consists of five main elements: address decode and

data bus buffers, MK3887 Z80-SIO, line drivers and

receivers, programmable baud rate generator, and channel

TMMDX Series is a trademark of Mostek Corporation

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