Modular probe system measures to 9 GHz
Measuring fast data signals such as SuperSpeed USB or PCIe-2.0 interfaces, requires an oscilloscope that can acquire and analyze data rates up to 5 Gbit/sec and suitable probes. This modular broadband probe system is designed to ensure that optimum contact is made with the DUT. It provides a high dynamic range and, depending on the tip and test mode, low input capacitance of 32 femtoFarad to 521 femtoFarad (fF) into the GHz range. As a result, the test signal is exposed to minimal load and distortion from the probe tip. The RT-ZM system consists of the RT#ZM15/30/60/90 amplifier modules with 1.5 GHz to 9 GHz bandwidth plus various swappable R&S RT-ZMA tips and tip modules.
Using the Multimode function users can switch between the various test modes: differential, common mode, single-ended P and single-ended N. A single contact on the DUT is therefore sufficient for comprehensive analyses. There is no longer any need to make a new contact with the DUT. Test time and the risk of improper contacting are reduced, providing consistent test results.
The system’s amplifier module is suitable for bandwidths in the range of 1.5 GHz to 9 GHz. The attenuation factor can be set to 2:1 or 10:1 with a dynamic range of ±0.5V or ±2.5V. R&S developed its own mixed signal ASICs for optimum RF characteristics and a unique DC characteristic with an exceedingly low temperature drift. The module also offers a large DC offset range of –16V to +16V, making it possible to analyze small signal details with maximum resolution, even at high voltages.
The amplifier module’s integrated ProbeMeter delivers precision voltage measurements independently of the oscilloscope. The DC components of a test signal can be determined in parallel to the oscilloscope measurement. The ProbeMeter has an accuracy of 0.05% with a dynamic range of ±7V. Tip modules come with solder-in tips or pin connectors, spring-loaded tips and an SMA module.
Rohde & Schwarz; www.rohde-schwarz.com