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Figure 4: 16-bit vertical resolution with the RIGOL oscilloscope of the DS70000 series
With the Q factor, on the one hand, the influence of noise and undesirable jitter effects become visible. On the other hand, sporadic effects are also visible. In this representation, a statement can also be made about the bandwidth, since this is related to the rise time of the eye diagram. The bandwidth of the probe head used is also visible. Here you should use a probe with a correspondingly high bandwidth, e.g. the new RIGOL probe from the PVA8000 series. Different types of synchronization are offered in the DS70000, which can be used for example whether a data stream is synchronized with a PLL or with a clock. Detailed jitter analysis tables indicate
how great the influence of the jitter is on the affected clock. On the one hand, the noise behavior can cause asymmetrical or random jitter. On the other hand, a defined disturbance can generate symmetrical or deterministic jitter. As soon as this symmetry and the interference signal are known, this influence on the data signal can be eliminated. The jitter analysis with the trend display and the use of a histogram as well as the display of the jitter in the frequency domain are suitable tools for quickly classifying and reducing jitter. If, for example, a sawtooth trend becomes visible, it is clear that the jitter changes like a periodic pulse and corresponds to a symmetrical jitter. If the distribution
08 April 2022
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of the histogram is added to this, further signal details can be seen. With the knowledge of the interfering signal, it can now be switched off or the clock can be better protected from the interfering signal in terms of design. A detailed representation of the jitter result shows the information about the type of jitter. The jitter analysis described can
be carried out in parallel to the measurement of the real-time eye diagram. The simultaneous display of both applications at the same time enables the data signal to be fully analyzed very quickly and conveniently. The DS70000 also offers a variety of
triggers and decodings for bus systems such as FlexRay, CAN-FD, LIN or I2C and many more. With the DS70000 series, up to four, even different, buses can be decoded at the same time. The result can be shown in an event table, which can also be saved as a *.csv file. Depending on the memory setting, the device can record up to 2 million time frames and replay them as often as required. The oscilloscope offers the option
of performing a pre-conformity measurement of the physical layer of, for example, USB2.0 HS or Ethernet 100 based on the IEEE 802.3-2018 standard. Different tests such as the peak value or the amplitude accuracy of the common- mode voltage or temporal measurements such as the jitter behavior or fading effects can be measured.
The vertical resolution of the DS70000 series can be increased, which is a valuable tool especially for analysis in power electronics, in order to make the smallest changes visible in the current and voltage curves. The vertical resolution can be resolved up to 16 bits depending on the bandwidth and the sampling rate. This resolution is also possible because the signal can be displayed in high resolution with the screen resolution of 1920 x 1080 pixels (see Figure 4). Since not only the representation but also the data transmission of the measured values is important, RIGOL has integrated different interfaces into this device variant. With the LAN interface, the device can be operated via web control using a browser. In addition, the device offers a USB 3.0 interface and an optical 10GB SFP+ interface to load data from the device to the PC very quickly. In addition, an HDMI connection is integrated if you want to connect a larger display for presentation purposes. By launching the DS70000 series, RIGOL is also expanding its portfolio of accessories with the active differential probe of the PVA8000 series. This probe head contains the self-developed front-end ASIC called Y-Phoenics (gama-Phoenics), featuring low- noise characteristics and very linear amplification of the signal. In addition, the alignment of the linear amplitude amplification over the frequency range is built directly into the chip. With the new DS70000 series and the probe head of the PVA8000 series, RIGOL offers a new dimension in measurement technology that combines flexibility and versatility with the performance of the new UltraVision III platform. With this new measuring technology, RIGOL is also treading the path of offering an outstanding price/ performance ratio with the usual high RIGOL quality. Due to its versatility, the oscilloscope can be used in numerous industrial applications, but also in research and development as well as in training.
www.rigol.eu
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