8-channel 4GHz oscilloscopes target digital power management

December 01, 2016 // By Julien Happich
Teledyne LeCroy has announced the RP4030 active voltage rail probe and an industry first MIPI System Power Management Interface (SPMI) serial decoder. The RP4030 probe measures small signal variations on a DC power/voltage rail, while the SPMI decoder monitors and correlates SPMI serial bus messages with DC power/voltage rail changes.

These two products are suitable for testing line or battery-powered computing and embedded systems that use digital power management ICs (PMICs) to reduce power consumption and increase system efficiency. They add to the extensive capabilities already provided by Teledyne LeCroy’s HDO8108 (1 GHz, 8 channel, 12-bit) and HDO9404 (4 GHz, 4 channel, 10-bit) High Definition oscilloscopes.

The RP4030 has a large (±30V) built-in offset range, low attenuation (1.2x), and high DC input impedance (50 kΩ). This combination of capabilities permits acquisition of DC power/voltage rails with offset equal to the nominal DC rail voltage thereby permitting the DC signal to be centred on the oscilloscope screen and the use of high-sensitivity oscilloscope gain settings (e.g. 5 mV/div) to view the noise and small signal AC variations on the DC rail voltage. The probe has 4 GHz of bandwidth and matches the Teledyne LeCroy HDO9404 High Definition Oscilloscope for power-integrity testing.

The SPMI decoder provides an intuitive, transparent, color-coded protocol decode overlay for the acquired SPMI physical-layer waveform. The SPMI protocol decode information is also displayed in a single time-interleaved table with other protocol data. Touching a row in the interactive table quickly zooms to the selected protocol packet, and pattern searches and filters provide an easy means of locating the desired protocol packets and messages. The SPMI decoder is multi-master/multi-slave capable, provides full command and arbitration sequence support, and supports all sequences with pauses.  

Visit Teledyne LeCroy at www.teledynelecroy.de