SMBus Electrical Validation and Protocol Decode Software

SMBus Electrical Validation and Protocol Decode Software

SMBus Electrical Validation and Protocol Decode Software offers electrical measurements and testing and protocol decoding as specified in the SMBus specification (version 3.2). PGY-SMBus Electrical validation and Protocol decode software runs in Tektronix Oscilloscope and provides electrical measurements and protocol decode at the click of a button. This allows engineers quickly check for SMBus conformance and flexibility to debug the failure. In addition to this, engineers can decode the command and response of SMBus to debug the communication. 

PGY-SMBus takes advantage of digital channels of MSO and provides the decoding of SMBus data lines.

Product Overview


Application Notes

Key features

  • Automated electrical measurements as specified in version 3.2 of SMBus specification documentation.
  • Supports electrical measurement for 100KHz, 400KHz, and 1MHz speed with limit comparison.
  • Decodes SMBus signals of different speeds for easy understanding of the protocol.
  • Links the protocol content to the electrical signal in the oscilloscope for easy understanding of the electrical characteristics of the SMBus protocol.
  • Overlays the protocol data on the analog waveform in a bus diagram window.
  • Zooms the selected SMBus packet content in the decode table in the bus diagram display for easy analysis of the electrical characteristics of the SMBus frame.
  • Color codes protocol content for easy analysis. (e.g. SMBCLK, SMBDAT, Address, Data, ACK,etc.)
  • Search capabilities to locate unique events in thousands of protocol data.
  • Ability to view protocol and decoded data in hexadecimal, decimal, binary, octal, and ASCII formats.
  • Ability to store the SMBus protocol data in CSV and text format.
  • Utility features zoom, undo, and fit the screen for easy debugging while correlating the protocol data to the waveform.
  • Report generation in PDF format. Option to include Configuration, Electrical parameters measured, saved images, Protocol listing in the report.
  • Supports .wfm (Tektronix)  .trc (LeCroy)and .H5 (Keysight)  file format for offline analysis.
SMBus Electrical Validation and Protocol Decode Software

Seamless Integration with Oscilloscope

PGY-SMBus runs inside the Tektronix oscilloscopes and makes the electrical measurements, decodes protocols, and displays the decoded data in a bus diagram, a table, and links the decoded data to the electrical signal in the bus diagram.

Specification – Details

Electrical Measurements


SMBCLK-Clock frequencySMBDAT Output Hold Time
High Period-SMBCLKSetup Time (R) START condition
Low Period-SMBCLKHold Time (R) START condition
Rise Time (SMBCLK, SMBDAT)Setup Time for STOP
Fall Time (SMBCLK, SMBDAT)Data valid Time
SMBDAT Input Rise TimeBus free time b/w STOP and START
SMBDAT Output Rise TimeInput Low Voltage (VIL)
SMBDAT Input Fall TimeInput High Voltage (VIH)
SMBDAT Output Fall TimeOutput Low Voltage (VOL)
SMBDAT Input Setup TimeOvershoot (SMBCLK, SMBDAT)
SMBDAT Output Setup TimeUndershoot (SMBCLK, SMBDAT)
SMBDAT Input Hold Time 
Input SourceOscilloscope (or) .wfm file for offline analysis
Bus Speed100KHz, 400KHz, 1MHz
Protocol Decode radixHexadecimal, Octal, Binary, Decimal, ASCII
Find/searchData and Address
Waveform windowOverlay of protocol decode data on waveform
Report generationCustomizable report in PDF format
Export of dataCSV and TXT format
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