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777387-01

更新时间: 2022-12-16 16:21:06
品牌 Logo 应用领域
美国国家仪器公司 - NI /
页数 文件大小 规格书
9页 378K
描述
Digital I/O, 24 or 96 Lines, 5 V TTL/CMOS

777387-01 数据手册

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Digital I/O, 24 or 96 Lines, 5 V TTL/CMOS  
NI 650x  
• 24 or 96 digital input/output lines  
• 5 V TTL/CMOS  
• 2-wire handshaking capability  
• Known power-up states  
• NI-DAQ driver simplifies  
configuration and measurements  
Operating Systems  
• Windows 2000/NT/XP  
• Real-time performance with  
LabVIEW (see page 134)  
• Others such as Linux and  
Mac OS X (see page 187)  
Models  
Recommended Software  
• LabVIEW  
• NI PCI-6503  
• NI DAQCard-DIO-24  
• NI PC-DIO-24  
• NI PCI-DIO-96  
• NI PXI-6508  
• LabWindows/CVI  
• Measurement Studio  
Other Compatible Software  
• Visual Basic  
• C/C++, C#  
• NI PC-DIO-96  
Driver Software (included)  
• NI-DAQ 7  
Family  
Bus  
Digital I/O Lines  
Device Type  
Logic Level  
Isolation  
Handshaking I/O  
8255 Chipset  
Change Notification  
Pattern Matching  
1
NI 6503  
PCI  
PCMCIA  
ISA  
PCI  
PXI  
24  
Software timed  
5 V TTL/CMOS  
1
NI 6508  
96  
Software timed  
5 V TTL/CMOS  
1
ISA  
1Handshaking supplied by the 8255; only one handshaking mode is available.  
Table 1. NI 650x Specifications Overview (See page 385 for detailed specifications.)  
Overview and Applications  
Digital I/O Connector  
NI 6503 devices are 24-bit parallel DIO interfaces for PCI, PCMCIA, Digital connectors for the NI 650x devices are described in Table 2.  
and ISA. NI 6508 devices offer 96-bit parallel DIO interfaces for PCI, The eight bits in Port A of each PPI are at xPA7 through xPA0 on the  
PXI, and ISA. All NI 650x devices are designed for 5 V TTL/CMOS digital I/O connector where x represents which PPI is being used. Ports B  
I/O signals.  
and C are at xPB7 through xPB0 and xPC7 through xPC0, respectively.  
Each port is programmed to be input or output. Power from the  
computer I/O channel is also available on the DIO connector. See page  
381 to learn more about connectivity solutions, including direct  
Hardware  
82C55 Parallel Port Interfaces  
NI 650x devices use 82C55 Parallel Port Interfaces (PPIs). NI 6503 connectors, electromechanical relay devices, and other signal  
devices contain one PPI, and the NI 6508 devices contain four. Each conditioning solutions.  
PPI controls 24 bits of DIO and has three 8-bit ports (A, B, and C). You  
Device  
Connector  
can configure each port as either input or output. Ports A and B are  
always used for digital data I/O, while port C can be configured for  
digital data I/O, control, status, or handshake signals.  
PCI-6503  
50-pin, shown in Figure 3  
PC-DIO-24  
DAQCard-DIO-24  
NI 6508  
27-pin; cable adapts it to the 50-pin connector shown in Figure 3  
100 pin; shown in Figure 2  
Table 2. NI 650x Connector Overview  
Digital I/O Power-Up State Selection  
You can power up the PCI-6503, PC-DIO-24, PC-DIO-96, and  
PXI-6508 DIO lines in a user-defined state – either high or low. On  
these devices, each line is connected to a 100 kresistor, and you can  
use a jumper to select whether the lines of the device power up in  
the high or low state. The DAQCard-DIO-24 and PCI-DIO-96 have  
100 kresistors that always pull high.  
National Instruments • Tel: (800) 433-3488 • Fax: (512) 683-9300 • info@ni.com • ni.com 379  

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