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Explore dual-channel and ultra-wideband signal analysis for demanding RF workflows.
Get faster, clearer insights with our new multicore, 12-bit oscilloscope up to 33 GHz. Trade in your old oscilloscope and get credit toward a new XR8.
Bridging design and physical testing to evaluate drop, impact, shock, and vibration compliance before hardware exists.
Unlock your free upgrade to the next bandwidth tier.
Strengthen 1.6T network reliability for AI-scale workloads from transceivers to interconnects.
Pair Keysight VSA software with the new XA5 signal analyzer for advanced visualization, demodulation, and analysis — start your 30-day trial today.
With extra memory and storage, these enhanced NPBs run Keysight's AI security and performance monitoring software and AI stack.
Explore end-to-end workflows spanning IC design, validation, wafer test, and photonics.
Explore curated support plans, prioritized to keep you innovating at speed.
Maximize accuracy and performance with precision accessories engineered for Keysight instruments.
Authoritative application notes, data sheets, reference designs, and test procedures to accelerate design and validation decisions.
Hands‑on bootcamps that teach system design, test methods, and production workflows engineers can apply immediately.
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Keysight E8491B IEEE-1394 PC Link to VXI是C尺寸的消息基模块，它通过工业标准IEEE-1394总线(FireWire)提供PC机与VXI主机箱的直接连接。对于使用E84XX主机箱系列的测试应用，E8491B是物美价廉的选择。E8491B最适合传输大量数据块的数据采集应用。
E8491B是带有资源管理器和0槽能力的高速C尺寸设备。其逻辑地址为0，因此总是主机箱的资源管理器，通常安装在主机箱的0槽。高速的实现部分是通过使用在双绞线上差分传输具有可控阻抗特性的小信号(200 mV)。该差分信号提供高噪声抗扰度。
E8491B包括C尺寸VXI 0槽模块和一条4.5m的电缆。由于无需关断电源即可自动识别新的IEEE-1394基设备，因而能容易完成配置，这一特性称为"热插入"。
E8491B选件001是基于OHCI的IEEE-1394/PCI主适配器卡。这是能以高达400 Mbits/s速率传输数据的PC插卡。插卡上有3个外部 1394端口。如果需要，基于OHCI的IEEE-1394/PCI卡能为需要电源的IEEE-1394设备提供达1.5A的12V电源。
