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• Introduction
Ther~ are two methods of data communication between computer and external equipment: S-bit parallel and
bit serial.
The serial interface card MZ-SBI03 (hereinafter referred to as "interface
~ard")
permits data communication by the
bit serial method. This interface card is manufactured in accordance with EIA RS-232C (the Electronic Industries
Association RS-232t::), and used for data communication with other equipment having interface based on RS-232C.
• Functions of this interface card
The interface card has the following functions.
1. One card has two channels, each of which is capable of transmitting/receiving data independently.
2. One of the ten baud rates can be selected by operating the switch on the card. Baud rates can be set independently
for the two channels.
3. Output connector signals to external equipment can be in either terminal mode or modem mode through the
operation of the jumper chip.
4. This interface card can be used as 20mA current loop for one channel.
• Applications
Equipped with the above-mentioned functions, the interface card has a variety of applications. Some applications of
this very versatile serial interface card are shown below.
1. Data communication between computers on telephone line via acoustic couplers
2. Printer
3. Plotter
4. Digitizer
5. Color display
6. Card reader
7. Magnetic tape equipment
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