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Efficient ,eye diagram testing, in DDR3/DDR4 system designs Compliance ,testing, is essential to ensuring that dynamic random access memory (DRAM) signals meet the JEDEC specifications for parameters such as timing, slew rates and voltage levels.
You can set up an ,eye diagram, and ,eye mask test, very quickly using our Serial Data Analysis software. Click Analysis and select Serial Data. Beneath the SDA tab, check the Enable SDA box and check the Lane 1 box. Select the Signal tab. Set up your Serial Data Inputs by choosing 1 Input, or Input1 – Input2.
• The ,eye diagram, on the left was the result of using the best pre-set Tx EQ values. • The ,eye diagram, on the right was same channel with optimized Tx EQ coefficients. • The green contour shows the BER ,eye, at 1e-12. • ,Eye, width opening increased from 7ps to 16ps (over 50% more ,Eye, Width) – Both assumed a Tx EQ step size resolution of 1/32
The optical transmitter pulse shape characteristics are specified in the form of a compliance ,mask, on the ,eye diagram, of Fig. 9.5. The ,eye mask, amplitude is normalized such that an amplitude of 0.0 represents logic ZERO and an amplitude of 1.0 represents logic ONE. The ,eye mask, normalized time scale is in Unit Interval (UI), where 1UI is 400 ps ...
Other topics about ,Eye Diagram, and ,Mask Test,. Overview. In the oscilloscope, an ,eye diagram, is often used to analyze signal quality. You can diagnose problems, such as attenuation, noise, jitter, and dispersion that arise or characterize specific parts of the system with one display.
13/6/2012, · TP4 ,mask testing, is the most common ,eye-diagram mask test, for evaluating the overall quality of your synchronous multi-node FlexRay system. The scope’s differential probe should be connected as close as possible to the BP and BM inputs of the receiving node that is under ,test, as shown in Figure 1. To ,test, all receiving
To ,test, a USB high speed transmitter, you have to ,test, the TP3 ,mask,: The horizontal position of point 3 is at 37.5% UI, and point 6 is at 62.5% UI, so you are trying to measure a rise-time of about 75% of 2.08 ns, or about 1.5 ns. A 500 MHz scope will measure a minimum …
Eye Diagram,, Waveform (,Mask, Hit correlation), Bathtub, Composite Histogram X: X: Limit and ,Mask Testing, Pass/Fail Measurement ,Test, Limits, Load and ,Test, to Standard ,Masks, X: X: Data Logging Measurements, Statistics, Worst-case Waveform, and Snapshots: X: X: X: Report Generation Export HTML Formatted Reports with Summary, Statistics, and Plots ...
Below two methods in measuring the High Speed ,Eye,. This measurment is also called the ,EYE diagram, or signal integrity ,test,. The device must be capable of sending the ,Test,_Packet pattern (see USB 2.0 Spec 7.1.20) in order to perform the High Speed ,EYE diagram test,. Note that USB 3.x products also need to meet these requirements.