Serial Interfaces for PXI, PCI,
PCMCIA, Ethernet, USB, and ISA
High-Performance Interfaces
NI 843x high-performance serial interfaces deliver advanced features
such as flexible baud rates up to 2 Mb/s and universal PCI, and
hyperthreading and multiprocessor compatibility. With the flexible
baud rate capabilities of the NI 843x interfaces, you can
communicate with devices that operate with nonstandard baud rates
ranging from 57 b/s up to 2 Mb/s within 1 percent and standard baud
rates within 0.01 percent. With multiprocessor and hyperthreading
compatibility, you also can take advantage of the latest PC
technology for higher speeds and improved efficiency. The new
driver software included with the devices offers better resource
allocation as well as DMA access for higher throughput with minimal
CPU usage. In addition, NI 843x interfaces include new
memory-mapping features that you can use to connect to more serial
devices without resource conflicts. PCI-843x interfaces are universal
PCI boards, fully compatible with both 5 and 3.3 V signaling
environments so the board can work in a wide range of PCs.
with serial devices. They come with either 2 or 4-port options and
use standard RS232, RS422, or RS485 communications. All products
are shipped with driver software for Windows 2000/NT/XP. You can
install and use these serial device servers as standard serial ports from
your existing applications or with applications written with NI-VISA.
The TCP/IP communication protocol, which handles all
communication between the serial device server and the host PC,
runs on embedded firmware in the serial device server. A
configuration utility configures the IP address of the serial device
server and exposes all additional serial ports to the OS for immediate
use by any application software package using a standard Microsoft
Windows Serial (COM) port interface.
Specifications
Interface Hardware Dimensions
High-Performance PCI .....................................
PCI
2-port boards (isolated and unisolated).....
4-port boards (isolated and unisolated).....
8-port boards ............................................
16-port boards ..........................................
PXI (excluding connectors) ..............................
PCMCIA ...........................................................
ENET................................................................
10.7 by 14.2 cm (4.2 by 5.6 in)
Pin 5
Pin 1
Pin 9
Pin 6
Pin 1
Pin 10
10.7 by 14.2 cm (4.2 by 5.6 in.)
10.7 by 17.3 cm (4.2 by 6.8 in.)
10.7 by 14.5 cm (4.2 by 5.7 in.)
10.7 by 17.5 cm (4.2 by 6.9 in.)
10.0 by 16.0 cm (3.9 by 6.3 in.)
Type II PC Card
21.0 by 12.4 by 3.7 cm
(8.25 by 4.89 by 1.44 in.)
USB-232/2, USB-232/4 ................................... 21.0 by 12.4 by 3.7 cm
(8.3 by 4.9 by 1.4 in.)
USB-232 .......................................................... 3.8 by 3.7 by 1.6 cm or
(1.5 by 1.4 by 0.6 in.)
ISA
Unisolated 2-port boards.......................... 10.7 by 16.5 cm (4.2 by 6.5 in.)
Isolated 2-port boards .............................. 10.7 by 18.7 cm (4.2 by 7.4 in.)
Unisolated 4-port boards.......................... 10.7 by 16.5 cm (4.2 by 6.5 in.)
Isolated 4-port boards .............................. 10.7 by 25.4 cm (4.2 by 10.0 in.)
Figure 1. DB-9 Connector Pin Locations
Figure 2. 10-Position Modular Jack
Pin Locations
Pin 34
Pin 1
Pin 50
Pin 1
Pin 68
Pin 35
Pin 100
Pin 51
Environmental Specifications
Operating Environment
Ambient
Temperature
Relative
(°C)
Humidity
0 to 55
10 to 90%
10 to 90%
0 to 55
0 to 55
10 to 90%
0 to 70
10 to 90%
10 to 90%
0 to 70
0 to 70
10 to 90%
Storage Environment
Ambient
Temperature
Relative
(°C)
Humidity
-20 to 70
5 to 95%
5 to 95%
-20 to 70
-40 to 125
5 to 95%
-20 to 70
5 to 95%
-40 to 80
5 to 95%
-40 to 85
5 to 95%
Figure 3. SCSI 68-Pin Connector Locations
Figure 4. SCSI 100-Pin Connector Locations
USB Interfaces
The National Instruments USB-232 and USB-485 transform your
USB port into asynchronous serial ports for communication with
serial devices. The NI USB-232 and USB-485 are available in either 1,
2, or 4-port versions, using standard RS232, RS422, or RS485
communications. You can install and use the USB-232 and USB-485
as standard serial ports from your existing applications or with
applications written with NI-VISA.
Additionally, the USB-232 2 and 4-port versions feature software-
selectable DTE or DCE transceiver modes, as well as an automatic
transceiver detection mode, or Auto232. The USB-485 features
software-selectable biasing, with which you can turn biasing on and
off for each port.
PCI
PXI
PCMCIA
ISA
USB
Ethernet
Safety
These products are designed to meet the requirements of the following standards of safety for
information technology equipment:
IEC 60950-1, EN 60950-1
UL 60950-1
CAN/CSA C22.2 No. 60950-1
Electromagnetic Compatibility
Emissions: EN 55011 Class A at 10 m. FCC Part 15A above 1 GHz
Immunity: EN 61326:1997 + A2:2001, Table 1
CE, C-Tick, and FCC Part 15 (Class A) Compliant
NOTE: For EMC compliance, operate this device with shielded cabling.
CE Compliance
These products meet the essential requirements of applicable European Directives, as amended for CE
Marking, as follows:
Low-Voltage Directive (safety):........................ 73/23/EEC
Electromagnetic Compatibility
Directive (EMC):......................................... 89/336/EEC
NOTE: For more information on certifications, marks, and DoCs, visit
ni.com/certification.
Ethernet Interfaces
The National Instruments ENET-232 and ENET-485 serial device
servers connect either 100BaseTX (100 Mb/s) or 10BaseT (10 Mb/s)
Ethernet networks to asynchronous serial ports for communication
2
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NI [ NATIONAL INSTRUMENTS CORPORATION ]
