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Data sheet:

ISA card 2x RS232 without galvanic isolation

Information on this data sheet:

Technical data

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Print version

Additional links:

Manual

Application:
2 RS232 devices connected to one PC

ISA card 2x RS232

Product properties:

Upgrading of PCs with RS232 high-speed ports
Manual configuration by means of DIL switch
Flexible configuration
- Standard base addresses COM1-COM4
- Custom base addresses possible
- Interrupts IRQ3-IRQ7, IRQ9-IRQ12
UART 16550 with FIFO
Conforms to standards both in office and industrial environments:
- Increased noise immunity for industrial areas
- Stricter noise emission for residential and commercial areas

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Background information:
The UART is the central element of any serial interface card. The use of UARTs without integrated FIFO buffer at the high baud rates needed for example in modern modems for proper function will result in extreme loads on the CPU: each received or send character generates an interrupt. The buffer integrated into the UART allows sending and receipt of multiple characters before an interrupt follows. Since the processor is interrupted less often, it is more efficient. In practice this means that the port has a significantly higher data throughput. This is particularly critical in the case of fast modems and ISDN connections.

Technical data:

Number of ports:		2 RS232 ports
UART:		16550 with FIFO
Base addresses:		03F8H, 02F8H, 03E8H, 02E8H
Interrupts:		IRQ 3..7, IRQ 9..12
Baud rate:		50..115,200 baud
Data format:		any format
Signal lines:		RxD,TxD,RTS,CTS,DSR,DCD,DTR,RI
RS232 adapter		9-pin SUB-D connector
Galvanic isolation:		none
Power supply:		+5V 0.2A, +12V 0.1A, -12V 0.1A
Ambient temperature:		Storage: -40..+70°C, Operation: 0..+70°C
Permissible relative humidity:		0..95% RH (non-condensing)
Dimensions:		165 x 106 mm
Weight:		approx. 150 g
Delivery:		1x ISA card 2x RS232

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Order now:	Prod. no.	in EUR plus VAT for commercial users Unit price
PC card ISA 2x RS232, non-isolated	13801	65.96