Furthermore, the introduction of a model with 20 GHz of true analog bandwidth across four channels provides increased performance and improved fidelity in measurements across four channels. In all models, the number of acquisition channels can be doubled using the Zi-8CH-SYNCH synchronization kit.
The standard sampling rate for a 45 GHz bandwidth is 120 GS/s, 80 GS/s for 25 and 30 GHz, and 40 GS/s across all four channels for 20 GHz. For bandwidths from 4 to 20 GHz, the standard sampling rate is 40 GS/s on each of the four channels, with the option to increase it to 80 GS/s using two channels. All available memory is accessible for analysis (processing), with 20 Mpts/ch supplied as standard and options up to 256 Mpts/ch. In 120 and 80 GS/s modes, memory can be shared by the channels to achieve 768 and 512 Mpts/ch, respectively.
The WaveMaster 8Zi-A models utilize second-generation Silicon Germanium (SiGe) components to ensure high performance. SiGe is the most widely used semiconductor manufacturing process, commercially implemented for many years. Furthermore, it is free from the thermal conductivity, reliability, performance, and cost issues typical of in-house processes. LeCroy's 8Zi-A series models, ranging from 30 to 45 GHz, employ sixth-generation Digital Bandwidth Interleave (DBI) technology to efficiently and reliably extend bandwidth without the detrimental effects of boosting.
LeCroy designed the 8 Zi-A series as a hardware platform, supporting nine available models with bandwidths ranging from 4 to 45 GHz.
The WaveMaster 820Zi-A features four 20 GHz channels. The second-generation SiGe chips used in the 8Zi-A offer ample bandwidth (up to 20 GHz) without the need for boosting techniques.
The 820Zi-A provides class-leading jitter noise floor values. 
The 845Zi-A utilizes proven second-generation SiGe track-and-hold components and analog-to-digital converters (ADCs) for even greater performance. These bandwidths are ideal for cutting-edge research and development applications, particularly in the high-speed optical communications and long-haul optical network markets. In addition to its 45 GHz capability, the oscilloscope can also operate on two channels at 30 GHz and four channels at 20 GHz. This provides the flexibility to use multiple channels at 30 or 20 GHz for time validations, as well as fewer channels for high-fidelity measurements of bandwidth-intensive signals.
The jitter noise floor at 45 GHz is 125 fs rms.
The maximum sampling rate using a single channel is 120 GS/s (45 GHz), with 80 GS/s and 40 GS/s when operating with two channels (30 GHz) and four channels (20 GHz), respectively. Similarly, the maximum available analysis memory is 768, 512, or 256 Mpts/ch in the 45, 30, and 20 GHz modes, respectively.
The WaveMaster 8 Zi offers high-performance analysis, and the WaveMaster 8 Zi-A series represents a significant advancement in processing capabilities, enhanced by the XStream
II architecture. The 3 GHz Intel® Core™2 Quad processor (with an effective processing speed of 4 x 3 GHz = 12 GHz), 8 GB of RAM, and Windows 7 64-bit operating system are standard. X-Stream II technology enables very fast processing of large amounts of data – even when the oscilloscope is analyzing captures of up to 768 Mpts, by using segmented variable-length acquisitions to better utilize the CPU cache and thus increase efficiency, resulting in processing times 10 to 20 times faster compared to other oscilloscopes. The new processor is 20% faster than its predecessor and is fully utilized by the X-Stream II architecture. Additionally, the standard memory of all 8 Zi-A series models has been increased from 10 Mpt/Ch to 20 Mpt/Ch, and from 20 Mpt/Ch to 32 Mpt/Ch in the SDA models. The higher-bandwidth SDA 845Zi-A model comes with 96 Mpt/Ch of standard memory.
The WaveMaster 8 Zi-A models are based on second-generation Silicon Germanium (SiGe) chips for improved performance. In addition to the increased bandwidth (20 GHz across four channels, as mentioned previously), this new generation of chips has improved the signal-to-noise ratio by approximately 25%.
The Timing and Jitter Analysis Suite (JTA2) and the advanced development tools XDEV are now standard on the 8 Zi-A models. The JTA2 analysis suite contains several powerful tools, such as the Track function, which provides a graphical representation of a measured parameter over time, and histograms, which graphically provide a statistical overview of a parameter. The Track function is particularly useful for understanding the temporal variation of certain parameters, as well as for jitter measurements. This function can be used for full memory captures, allowing millions of measurements to be captured and plotted against time over extended periods.
The advanced development tool XDEV enables unparalleled custom integration, allowing engineers to create and customize custom mathematical algorithms and functions using MATLAB, C/C++, Excel, Visual Basic Script (VBS), or Java scripts. These are then inserted into the oscilloscope's processing engine, with the results displayed directly on the oscilloscope screen, available for further analysis and/or processing.
For serial data applications, nine Serial Data Analyzer (SDA) models, ranging from 4 to 45 GHz with similar sampling rates and memory depth, are combined with the powerful SDA II Serial Data Analysis tools and advanced serial triggering capabilities. This provides enhanced capabilities for implementing and debugging new serial data standards, such as PCIe 3.0 and USB 3.0.
Lecroy's advanced SDA II series data analysis software offers powerful capabilities for analyzing and debugging jitter issues using unique analysis tools at both the eye diagram and jitter decomposition levels. Furthermore, eye diagram analysis is typically about 100 times faster than competing products—nearly 1 million unit intervals of a PCI Express signal can be captured, analyzed, and displayed in 3 seconds.
For compliance testing, automated packages (QualiPHY™) are available for a wide range of standards, including USB 3.0, PCIe, SAS, SATA, DDR, HDMI, and DisplayPort.
Finally, oscilloscopes with bandwidths up to 45 GHz are used to test the fastest emerging technologies in the most demanding measurement environments. At these speeds, engineers are encountering signal integrity issues that were previously primarily associated with microwave environments. Lecroy's Eye Doctor II™ signal integrity tool provides the ability to eliminate measurement effects from cables and adapters, pre-emphasis and de-emphasis modeling, channel emulation, and receiver equalization. It is now possible, within the oscilloscope environment and using full memory captures, to compensate for or emulate the effects of signal path and receiver equalization in order to accurately and faithfully measure signals anywhere in the circuit under any conditions.
probes
are available in 13, 16, 20, and 25 GHz models with a browser-type positioner and solder tips, and are distinguished by their high bandwidth (25 GHz), very low noise, and high mid-band impedance.
