Vector Network Analyzer Delivers 24 High-Speed Test Ports
Rohde-Schwarz’s multiport ZNBT Vector Network Analyzer (VNA) handles 24 test points for measurements from 100 kHz to 40 GHz. It can be used for applications such as 5G antenna arrays. It also can manage multiple devices under test (DUTs). The ability to handle bands below 300 kHz allow it to address USB Type C power and control testing. This VNA is able to perform signal-integrity tests that test crosstalk or length offset between lines as well as check for faults in cables.
Modular VNA Targets Broadband Test Applications
Anritsu provides a two-port VNA than can be expanded to four ports in a modular fashion. Likewise, the support modules make it possible to upgrade the VectorStar ME7838 VNA so that it can handle a wide single-frequency sweep range from 70 kHz to 110 GHz and up to 1.1 THz in the mmWave bands. Additional modules are used to tackle the higher frequencies. The system has excellent calibration and measurement stability at 0.1 dB over 24 hours.
Keysight Delivers DDR5 Test Support
The next-generation, DDR5 synchronous dynamic random-access memory (SDRAM) looms on the horizon, and Keysight Technologies is providing the technology to support and test the new hardware and software. The game is changing as DDR5 is much more demanding in design terms than DDR4. The company’s test solutions address the transmit (Tx) and receive (Rx) aspects, including support for test fixtures and the matching software. This includes support for automated Tx compliance testing. A new Advanced Design System (ADS) framework incorporates the solution into Keysight’s PathWave system. The Rx compliance test support (shown) addresses amplitude, jitter, crosstalk, stressed eye, and DFE calibration tests as well as voltage, jitter-sensitivity, and stressed-eye tests.
Oscilloscope Handles PCI Express 5.0 Test Requirements
Teledyne LeCroy’s LabMaster10Zi-A supports PCI Express (PCIe) 5.0 physical-layer testing. The oscilloscope is built to take on the 32-Gtransfer/s requirements for the emerging standard. The QPHY-PCIE5-TX-RX physical-layer software option for LabMaster scope delivers automated receiver-test calibration for jitter-tolerance testing, automated collection of waveforms and testing of PCIe 5.0 transmitter parameters, and support for characterization of PCIe signals in both common-clocked and independently clocked (SRIS/SRNS) architectures. It links Teledyne LeCroy's SDAIII-CompleteLinQ jitter-decomposition, eye-diagram, and noise-analysis software with these capabilities for faster PCIe 5.0 debugging.
U.2/U.3 Interposer Supports PCI Express 4.0
Interposers are needed to expose connections for testing. Teledyne LeCroy’s latest U.2/U.3 Interposer supports PCI Express (PCIe) 4.0 interfaces, allowing developers to check out the last U.2 and U.3 devices. The U.2 and U.3 module standards address high-capacity, high-performance storage in the enterprise and cloud. They support PCIe and 24 Gbit/s SAS depending on the devices, and this interposer supports them all.
Oscilloscope Leverages Xilinx SoC to Deliver High-Performance Test
Rigol built its latest MSO5000 series around Xilinx’s Zync-7000 system-on-chip (SoC) running Linux. Available in bandwidths from 70 MHz to 350 MHz, the scope is upgradable from two to four inputs. It also includes a 16-channel logic analyzer interface. On top of that, the system incorporates a spectrum analyzer, a dual-channel arbitrary waveform generator (AWG), a digital voltmeter, and a frequency counter and totalizer.
The oscilloscope features an 8-Msample/s rate with up to a 200-Mpoint memory. It has a high waveform capture rate of over 500,000 waveforms/s. The 9-in. capacitive multi-touch color display has an easy-to-use UltraVision II interface. The scope also supports browser-based remote control. There’s an HDMI output as well as USB and Ethernet connectivity.
Simulation Complements Physical Testing
Physical testing using oscilloscopes and VNAs is invaluable, but doing only physical testing can be expensive and time-consuming. Simulation is complementary to actual testing, and it can be scaled and repeated more easily than physical testing. In addition, simulation can provide a more detailed and efficient development process up front.
ANSYS’s ANSYS 2019 R1 addresses pervasive simulations including electromagnetics, fluids, optics, and mechanical. It can handle full systems with mixed simulations, including digital twins. New features include multibody dynamic (MBD) support, more intuitive computational fluid dynamics (CFD) support in ANSYS Fluent, ANSYS SCADE support for the automotive sector, and electromigration analysis workflow for ANSYS Slwave.
Making Useful Noise
Oscilloscopes, VNAs, waveform generators, and other test equipment is needed to analyze a device under test and reduce the device’s susceptibility to noise. Still, testing in noisy environments is important.
Noisecom is all about making noise, which is actually key to testing high-speed devices such as those for 5G systems. The NC3600 is a high-excess noise-ratio (ENR) source available in cover frequencies up to 45 GHz. Developers often have had to use expensive microwave and mmWave signal generators—the NC3600 offers an alternative low-cost solution that provides reliable and repeatable noise.
Arbitrary Function Generator Sports Enhanced User Interface
The Tektronix AFG31000 series features a 9-in. capacitive touchscreen to deliver an intuitive user interface. However, ease of use isn’t the only key aspect of the family. Its InstaView feature addresses monitors and displays the waveform at the DUT without the need for additional cables or instruments—even when devices don’t match the typical 50-Ω impedance found in competitive AFGs. The Advanced mode allows the 128-Mpoint waveform memory to be segmented into 256 entries with a drag-and-drop interface. It can handle long, non-repeating waveforms as well as multiple waveforms with complex timing.
With the ArbBuilder application, arbitrary waveforms can be made without needing a PC to create and download the waveforms. These waveforms can be saved and downloaded as .csv files.
The AFG31000 series is available in 1- or 2-channel configurations. They have a 14-bit vertical resolution along with a 250-Msample/s, 1-Gsample/s, or 2-Gsample/s rate. Output amplitude range is 1 mV p-p to 10 V p-p into 50-Ω loads.