SMBus Electrical Validation and Protocol Decode Software Datasheet

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.

SMBus Electrical Validation and Protocol Decode Software Datasheet

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, and 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
Figure-1: PGY-SMBus Scope Electrical Validation and Decode Software running in Oscilloscope


Seamless Integration with Tektronix 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 frequency SMBDAT Output Hold Time
High Period-SMBCLK Setup Time (R) START condition
Low Period-SMBCLK Hold Time (R) START condition
Rise Time (SMBCLK, SMBDAT) Setup Time for STOP
Fall Time (SMBCLK, SMBDAT) Data valid Time
SMBDAT Input Rise Time Bus free time b/w STOP and START
SMBDAT Output Rise Time Input Low Voltage (VIL)
SMBDAT Input Fall Time Input High Voltage (VIH)
SMBDAT Output Fall Time Output Low Voltage (VOL)
SMBDAT Input Setup Time Overshoot (SMBCLK, SMBDAT)
SMBDAT Output Setup Time Undershoot (SMBCLK, SMBDAT)
SMBDAT Input Hold Time


Input Source Oscilloscope (or) .wfm file for offline analysis
Bus Speed 100KHz, 400KHz, 1MHz
Protocol Decode radix Hexadecimal, Octal, Binary, Decimal, ASCII
Find/search Data and Address
Waveform window Overlay of protocol decode data on waveform
Report generation Customizable report in PDF format
Export of data CSV and TXT format


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