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Features
- 2 or 4 independent serial ports
- Each port configurable as RS-422
or RS-485
- Speeds up to 921.6 kbps
- Full duplex and half duplex
modes supported
- 16750 UARTs with 64-byte FIFOs
- Surge suppression package
available
- Windows 95/98/Me/NT/2000/XP
& Linux support
- 5 year warranty
Description
Quatech's RS-422/485 serial boards
are available with either two or four ports. The ports are jumper
configurable for either RS-422 or RS-485 in any combination for full
and half duplex networks. PCI registers are properly implemented to
assure that Plug-and-Play works reliably, and that the board will
not cause PCI bus conflicts. The boards are implemented with 16750
UARTs containing 64-byte FIFOs. They use a clock multiplying feature
allowing them to achieve data rates as high as 921.6 kbps.
To maintain maximum signal
integrity, Quatech uses a four-layer board design. But, for even
more protection in industrial environments, an optional surge
suppression package is available. This "IND" option
applies a surge suppressor to each line that is capable of
sustaining up to 40A peak, 8 x 20µs transient surges, a clamping
voltage of 15.5V and a peak energy dissipation of 0.1 Joules. (Note
that implementing the IND option restricts the board's speed to
115.2 kbps.) |
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