To minimize probe loading at very high frequencies near probe bandwidth, the interconnect parasitics have been reduced by using a novel flexible probe attachment design, called Tip-Clip. Hence, a family of interchangeable Tip-Clip adapters have been developed for flexibility in probe attachments, as well as minimal interconnect parasitics (Figure 2). This reduced interconnect parasitic offers improved signal fidelity and better signal response. In addition, the flexibility of the Tip-Clip makes life easier for the engineer. For instance, if a Tip-Clip assembly is damaged, it can be replaced without having to send the entire probe back to the supplier for repair. Furthermore, the supplier cautions that to protect solder joints on the circuit board that is being tested, the Tip-Clip must be secured, along with the probe. Consequently, the supplier includes 3M VHB tape as part of the Z-Active accessory kit. Also recommended is using a magnifying glass for test points that are small. Because modern boards are dense and use finer geometries, using a magnifying glass will ensure that the user sees the test point structure clearly in order to make a good contact.

Lastly, the active probe is connected to the oscilloscopes via an interface called TekConnect. This interface ensures superior signal fidelity with useful bandpass up to 18 GHz at the oscilloscope input, while offering unparalleled versatility with the world's widest array of accessory signal acquisition solutions for high-performance, real-time oscilloscopes. This interface delivers a more robust oscilloscope interface for next-generation products with multi-GHz analog bandwidths, overcoming many of the inherent bandwidth limitations of BNC-based interfaces. The TekConnect interface preserves a low-voltage standing-wave ratio (VSWR), 50 Ω environment, as well as a reliable electrical connection. A convenient, one-button release and locking mechanism provides quick, easy installation and removal of probes, amplifiers and adapters.

Recently, to meet user needs, Tektronix added a new member to its Z-Active differential probe family, the P7360 6 GHz. This probe complements the P7380 8 GHz model, followed with the 12.5 GHz P7313. According to Tektronix, the P7360 is in response to user requests to extend the Z-Active family to lower bandwidth. It will be useful to design engineers working with high-speed signals and serial data at rates from 1.5 Gbps to 3.125 Gbps.

Previous 1 2

RSS    Save to Del.icio.us  Digg This