Saelig offers USB tester, USB spectrum analyzer, and scope option

September 29, 2014. Saelig announced this month that it is offering several new products, including USB power-delivery testers, a USB-stick spectrum analyzer, and an oscilloscope option that enables small voltages to be measured in the presence of large voltages.

Designed for FSK and Baseband variants of USB Power Delivery, the Packet-Master USB-PDA is a Power Delivery Analyzer and the Packet-Master USB-PDA-E is a Power Delivery Exerciser and Analyzer. Each is supplied with a PC-based Windows application called GraphicUSB for capturing and displaying PD interactions.

“USB Power Delivery” is a specification allowing USB to provide power in a more flexible and adaptable way. The FSK version uses two-way signaling superimposed on the existing VBUS wire in the USB cable.  The Packet-Master USB-PDA has been designed to conform to the USB Implementers Forum Power Delivery Compliance Plan where any non-compliance with the protocol and timings is highlighted, and a detailed problem description displayed.

Designed and made by MQP Electronics, the instruments are available from Saelig with prices starting at $4999.

Spectrum analyzers

The TSA range of spectrum analyzers are economical USB-stick-sized miniature RF tools with large instrument performance. These PC-connected devices can perform most of the basic tests of much more expensive bench-top spectrum analyzers. Though tiny, the TSA spectrum analyzers covers a wide measurement range in three models: TSA4G1 (1 MHz to 4.15 GHz), TSA6G1 (1 MHz to 6.15 GHz), and TSA8G1 (1 MHz to  8.15 GHz). They accept signal levels into standard SMA input connectors from – 110 dBm to +30 dBm (input power up to 1 W) and feature a noise level as low as -110 dBm. Test data is displayed on the attached PC using the supplied software, with calibrated level, linearity and frequency.

A remote feature allows the PC-connected USB-powered analyzers to be controlled remotely from anywhere via the Internet, allowing for the creation of an easy-setup remote RF monitoring system. Frequency stability is ±5 ppm, and the minimum scanning step is 2 kHz at a 1-MHz span. Resolution bandwidths can be set to 50 kHz, 100 kHz, 200 kHz, or 500 kHz. Scanning over the whole frequency range is 0.2 s for fast-scan, and 2.3 s for normal scan. Signal processing is performed with the free downloadable PC-based software. Made by Triarchy Technologies Corp., the TSA Range of Spectrum Analyzers are available now from Saelig.

Oscilloscope adapter

The CLIPPER CLP1500V15A1 oscilloscope adapter allows small voltages to be measured in the presence of very high voltages, such as those present on switching MOSFETs or IGBTs (insulated gate bipolar transistors). Making accurate measurements in the presence of very high voltages has previously been extremely challenging, but using the CLIPPER CLP1500V15A1, the VdsON or RdsON of a switching transistor can now be easily seen in high resolution (for example, 100 mV/div) on an ordinary digital oscilloscope. Determining the switching speeds, safe operating area (SOA), and temperature effects of MOSFETs and IGBTs is now simplified with the CLIPPER CLP1500V15A1.

The CLIPPER CLP1500V15A1 can serve both in the design verification phase and production process monitoring. In typical use, the CLIPPER is connected between Drain and Source terminals of a power MOSFET. The output signal provides a 1-to-1 picture of what is occurring across the MOSFET, without the disturbing influence of the high drain voltage. In this way, the oscilloscope resolution can be reduced to 0.2V per division, giving excellent visibility of the on-time switching characteristics.

Made by Springburo, a European designer of custom power electronics, the CLIPPER CLP1500V15A1 is available now from Saelig.

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