Tektronix DPO5054B MOST - MOST50 and MOST150 Compliance Solution Option for DPO5054B (Requires DJA)
Option MOST launched from Tektronix oscilloscope Analyze menu and provides both MOST50 and MOST150 measurements.
Applications
- MOST50 host and device silicon characterization, debug, and validation
- MOST150 host and device silicon characterization, debug, and validation
- MOST system integration and validation
- MOST manufacturing test
MOST50 and MOST150 Validation with MOST Essentials
DPOJET software with automated MOST Essentials Setup Library provides a complete set of measurements required for MOST50 and MOST150 compliance testing. MOST Essentials enables characterization, debug analysis, and conformance testing according to the MOST base specification and conformance specifications.
MOST Automated Testing - Save Time and Resources
There is no longer a need to be an expert on MOST testing procedures. Remembering the exact steps to take each measurement is time consuming and often requires going back to the MOST specifications. MOST Essentials takes the guesswork out of conducting MOST50 and MOST150 compliance testing. Even if you remember how to use the test equipment, it is common for even the most experienced operators to forget steps in the procedure or to set up the correct parameters, such as applying the correct record length and sampling rates.
The automated DPOJET Setup Library for MOST provides standard-specific details and predefined scope settings for each measurement, so the user does not need to be an expert. MOST Essentials minimizes the setup initialization problems, reduces the complexity of executing MOST tests, and enables you to test devices faster.
100% Test Coverage
MOST Essentials provides a complete set of normative and informative measurements to be performed across all four test points, for both MOST50 and MOST150 compliance testing. Some of the measurements include Eye Mask Hits, Alignment Jitter, Transfer Jitter, B0/B1, Overshoot, and Undershoot.
Eye Diagram measurement
Eye diagram testing for MOST requires testing mask hits at different segment portions of an eye mask, across different test points for both MOST50 and MOST150.
Overshoot and Undershoot measurements
Measurement of the optical overshoot and undershoot is required to ensure the proper operation of the optical receiver. The optical pulse shape is tested with a parameterized mask. The mask parameters are based on the measured optical logic levels b0 and b1 (High Ref and Low Ref). Optical transmitting devices must produce an optical signal complying with the defined mask when driven with a compliant electrical signal.
Transferred Jitter and Alignment Jitter measurements
Jitter is the phase deviation between an edge of the waveform and the correlating transition of the recovered UI clock. For transferred jitter, only phase variations coming with rising edges of the waveform are relevant, because only these deviations are tracked by the PLL and impact the recovered clock’s phase.
Alignment Jitter is the phase deviation between any edge of the waveform and the correlating transition of the recovered UI clock. Calculating the misalignment between clock and data for each data transition and drawing the successive phase deviations over run time in a graph results in an “AJ-Track” which is the base for further evaluations.
Extinction Ratio measurement
The extinction ratio is calculated based on the measured optical levels for b1 and b0 (High Ref and Low Ref) by using a high-precision DC-coupled O/E converter.
Seamless debug and analysis with MOST Essentials
MOST Essentials helps perform step-by-step debugging on failures. MOST Essentials helps debug faster and discover sources of jitter and signal integrity issues more quickly.
Flexible and customizable for characterization
The MOST Essentials Setup Library is highly flexible and fully customizable. It allows modification of the measurement settings, oscilloscope configurations, limits, and other parameters, and then saving the customized setup. For example, when testing a MOST50 or MOST150 DUT in an automotive temperature chamber setup or when using optical cables or remote XL cables in the setup, a user can define additional filter files and custom limits to fine-tune the setup conditions.
Plots and Results
The DPOJET Plot feature for MOST Essentials helps characterize MOST devices with detailed visual representations. The Result section helps design engineers to look at the test results quickly and clearly. The Report section includes details of each test including Limits, Measured Value, Pass/Fail Results, etc.
Detailed reports
The MOST Essentials application generates thorough HTML/MHT reports that capture the performance, status, and test results of your device. It also captures eye diagrams, oscilloscope waveform screen captures, and test waveforms optionally. The report generation tool also provides features such as Report Appending, Auto-Incrementing Report Naming, Inserting User Comments, Listing Complete Configuration Details, etc. The Report Appending feature enables adding results from each of the four test points for both MOST50 and MOST150, and creating a single, printable report for sharing the results.