GPIB-140A  缓冲或无缓冲传输 高速串行光纤传输

【产品详情】

特征：

高速串行光纤传输

传输速率超过 1.1 MB/s （IEEE 488.1） 或 2.8 MB/s （HS488）

将GPIB器件数量扩大到26个

缓冲或无缓冲传输

National Instruments GPIB-140 / GPIB-140A 光纤 GPIB 延长器消除了对 IEEE 488 标准规定的电缆长度和设备负载 同时几乎不需要桌面空间。IEEE 488 标准 规定GPIB系统的电缆总长度不能超过GPIB 20 m，最大设备数为 15。一对 NI GPIB-140A/ 2 总 线 延长 器 可 将 电缆 长度 延长 至 2 km 在不损害GPIB完整性或要求任何 应用程序修改。GPIB-140A可以使用光纤电缆 长度可达 1 公里。 这些GPIB扩展器采用缓冲传输技术，以业界最快的速率传输数据，同时将布线成本保持在最低水平。

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 m。一对GPIB扩展器可以达到1 km的总距离，无需任何修改，也不会影响用户GPIB系统的完整性。

该GPIB延长器可支持长达1公里的光纤电缆。NI GPIB-140A 采用 缓冲 传输 技术， 使 该 型号 成为 市 上 最 快 的 GPIB 总 线 扩展 器 之一。使用此模型，用户可以在 HS488 协议中运行时实现超过 2.8 MB 的速度。该GPIB延长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延长器。在远端，GPIB仪器连接到类似的电缆延长器。然后，两个电缆延长器通过光纤电缆互连。

每 个 NI GPIB-140A 都 持续 监测 GPIB 活动， 并将 GPIB 信号 转换 为 并行 或 串 行 信号， 以便 传输 到 接收 扩展 器。接收扩展器接收来自发送扩展器的串行或并行信号，并将其转换为 IEEE 488 信号。NI GPIB-140A 是 软件 透明 的， 因此 无需 对 现有 软件 应用 程序 进行 修改。

GPIB-140A  缓冲或无缓冲传输 高速串行光纤传输

【英文介绍】

Features:

High-speed serial fiber transmission

Transfer rate exceeding 1.1 MB/s (IEEE 488.1) or 2.8 MB/s (HS488)

Expand the number of GPIB devices to 26

Buffered or unbuffered transmission

The National Instruments GPIB-140 / GPIB-140A Fiber optic GPIB extender eliminates the cable length and device load required by the IEEE 488 standard while requiring little desktop space. The IEEE 488 standard specifies that the total cable length of a GPIB system cannot exceed 20 m GPIB, and the maximum number of devices is 15. A pair of NI GPIB-140A/ 2 bus extenders can extend cable lengths up to 2 km without compromising GPIB integrity or requiring any application modifications. The GPIB-140A can use fiber optic cables up to 1 km in length. These GPIB extenders use buffered transfer technology to transfer data at the industry's fastest rates while keeping cabling costs to a minimum.

The NI GPIB-140A (part number: 777997-01, 777977-02, 777977-03, 777977-04, 777977-05, and 777977-06) is a GPIB bus extender. The device easily eliminates cable length and device load related limitations imposed by the IEEE 488 standard. The GPIB-140A is fully compatible with IEEE 488.1 and IEEE 488.2 standards. According to the IEEE 488 standard, the total length of any GPIB system cannot exceed 20 m. A pair of GPIB extenders can achieve a total distance of 1 km without any modification and without compromising the integrity of the user's GPIB system.

The GPIB extender can support up to 1 km of fiber optic cable. The NI GPIB-140A features buffered transmission technology, making this model one of the fastest GPIB bus extenders on the market. Using this model, users can achieve speeds in excess of 2.8 MB when running in the HS488 protocol. The GPIB extender can be deployed effortlessly and requires no additional hardware. In typical cases, one end of the computer device is connected to a cable extender. At the far end, the GPIB instrument is connected to a similar cable extender. The two cable extenders are then interconnected via a fiber optic cable.

Each NI GPIB-140A continuously monitors GPIB activity and converts GPIB signals into parallel or string signals for transmission to the receive extender. The receive extender receives a serial or parallel signal from the send extender and converts it into an IEEE 488 signal. The NI GPIB-140A is software transparent, so there is no need to modify existing software applications.

GPIB-140A  缓冲或无缓冲传输 高速串行光纤传输

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