描述
NI GPIB-140A产品详情
NI GPIB-140A是一款由美国国家仪器（National Instruments，简称NI）公司生产的高速GPIB总线扩展器。它可以显著扩展GPIB系统的物理距离，而不会影响系统的性能和完整性。
产品特点
长距离传输：GPIB-140A可以通过光纤连接，将两个独立的GPIB系统连接起来，最大传输距离可达1公里。
高速传输：支持高速数据传输，兼容IEEE 488.1和IEEE 488.2标准，最高传输速率可达2.8 MB/s。
透明传输：对用户软件完全透明，无需修改现有软件即可实现扩展。
易于安装：安装简单，无需额外的硬件或软件。
高可靠性：采用工业级设计，具有较高的可靠性和稳定性。
应用领域
NI GPIB-140A主要应用于需要长距离传输GPIB数据的场合，例如：
大型测试系统：将多个GPIB设备分散在不同的机柜或房间中。
工业自动化：在恶劣环境下进行远程仪器控制。
科研实验：连接位于不同实验室的仪器设备。
工作原理
GPIB-140A通过光纤将GPIB信号转换为光信号进行传输，在接收端再将光信号转换为GPIB信号。整个过程对用户是透明的。
技术规格
接口：GPIB接口，光纤接口
传输距离：最大1公里
传输速率：最高2.8 MB/s
符合标准：IEEE 488.1，IEEE 488.2
NI GPIB-140A Product Details
NI GPIB-140A is a high-speed GPIB bus extender produced by National Instruments(NI).It can significantly extend the physical distance of a GPIB system without affecting the performance and integrity of the system.
Product Features
Long-distance transmission:GPIB-140A can connect two independent GPIB systems through optical fiber connection,with a maximum transmission distance of up to 1 km.
High-speed transmission:Supports high-speed data transmission,compatible with IEEE 488.1 and IEEE 488.2 standards,with a maximum transmission rate of up to 2.8 MB/s.
Transparent transmission:Completely transparent to user software,expansion can be achieved without modifying existing software.
Easy to install:Simple installation,no additional hardware or software required.
High reliability:Industrial-grade design,with high reliability and stability.
Application areas
NI GPIB-140A is mainly used in situations where GPIB data needs to be transmitted over long distances,such as:
Large test system:Multiple GPIB devices are scattered in different cabinets or rooms.
Industrial Automation:Remote instrument control in harsh environments.
Scientific Research Experiments:Connect instruments and equipment located in different laboratories.
Working Principle
GPIB-140A converts GPIB signals into optical signals for transmission via optical fiber,and then converts the optical signals into GPIB signals at the receiving end.The whole process is transparent to the user.
Technical Specifications
Interface:GPIB interface,optical fiber interface
Transmission distance:Maximum 1 km
Transmission rate:Maximum 2.8 MB/s
Compliant standards:IEEE 488.1,IEEE 488.2
