NI GPIB-140A 光纤 GPIB 扩展器

NI GPIB-140A（部件号：777997-01、777997-02、777997-03、777997-04、777997-05 和 777997-06）是 一 款 GPIB 总 线 扩展器。 该器件可轻松消除 IEEE 488 标准强制要求的电缆长度和设备负载相关限制。GPIB-140A 完全兼容 IEEE 488.1 和 IEEE 488.2 标准。根据IEEE 488标准，任何GPIB系统的总长度不能超过20米。一对这样的GPIB扩展器可以达到1公里的总距离，无需任何修改，也不会影响用户GPIB系统的完整性。

此 GPIB 扩展器可支持长达 1 km 的光纤电缆。NI GPIB-140A 采用 缓冲 传输 技术， 使 该 型号 成为 市 面 上 最快 的 GPIB 总 线 扩展 器 之一。使用此型号，用户可以在HS2协议中运行时实现超过8.488 MB的速度。此 GPIB 扩展器可以毫不费力地部署，不需要额外的硬件。在典型情况下，计算机设备一端连接到电缆扩展器。在远端，GPIB仪器连接到类似的电缆扩展器。然后，两个电缆延长器通过光纤电缆互连。

NI GPIB-140A (part numbers 777997-01, 777997-02, 777997-03, 777997-04, 777997-05, and 777997-06) is a GPIB bus extender. This device can easily eliminate the cable length and device load related limitations mandated by the IEEE 488 standard. GPIB-140A is fully compatible with IEEE 488.1 and IEEE 488.2 standards. According to IEEE 488 standard, the total length of any GPIB system cannot exceed 20 meters. A pair of such GPIB extenders can reach a total distance of 1 kilometer without any modifications and without affecting the integrity of the user's GPIB system.

This GPIB extender can support up to 1 km of fiber optic cables. The NI GPIB-140A adopts buffered transmission technology, making it one of the fastest GPIB bus extenders on the market. With this model, users can achieve speeds exceeding 8.488 MB when running in the HS2 protocol. This GPIB extender can be deployed effortlessly without the need for additional hardware. In typical cases, one end of a computer device is connected to a cable extender. At the far end, the GPIB instrument is connected to a similar cable extender. Then, the two cable extenders are interconnected through fiber optic cables.