Features
- 1 or 2 serial ports each
configurable as RS-422 or RS-485
- Speeds up to 460.8 kbps
- Auto enable/disable of
RS-422/485 transmitter
- Full duplex and half duplex
modes supported
- Universal PCI connector
compatible with 3.3V and 5V systems
- MD1 Low Profile Board (fits 2U
racks without riser cards)
- 16550 UARTs with 16-byte FIFOs
- Standard DB-9 connectors
- Windows 95/98/Me/NT/2000/XP
& Linux support
- 5 year warranty
Description
Quatech RS-422/485 UPCI boards
completely meet the PCI 2.3 specification for Universal connectivity
and Low Profile boards, as well as all other aspects of the
specification so that you can be certain that every Quatech
Universal PCI board will function properly and perform reliably in
your system. Serial port connections are made via an onboard DB-9
female port for single port models, and via the included cables
providing two DB-9 female connectors for two port boards.
The new Low Profile PCI footprint
was designed to provide greater flexibility for embedded systems,
thin-clients, and desktop and server environments. The boards are
mechanically similar to standard PCI boards, but use a shorter board
and a different mounting bracket. They are designed to fit into
systems as low as 3.350" without using riser cards. The boards
are built on 32-bit addressing, and can be used in standard PCI
backplanes or with specialized Low Profile PCI brackets. Quatech's
RS-422/485 boards are built using the smallest (MD1) Low Profile
board specification, which allows them to be used in even the
smallest size systems without riser cards.
PCI 2.3 requires that all plug-in
cards support 3.3V signaling. However, many systems still use 5V
signaling. To accommodate both system types, Quatech Low Profile
boards also use a Universal PCI connector compatible with both 3.3V
and 5V signaling. This means that they can be used with current
equipment, and will not need to be replaced as systems are upgraded.
It also means that a single serial board solution can be used across
a diverse network comprised of many different types of computer.
Each port on the board can be
configured as either RS-422 or RS-485 for full or half-duplex
communication. It is implemented with an automatic RS-422/485
transmitter enable/disable function that permits the hardware itself
to regulate data flow by only driving lines while actively
transmitting--providing increased speed and convenience over the
older software controlled method.
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