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SIGMA2/SIGMA and OMEGA logic analyzers:
Examples of measured waveforms


An example of a USB communication, an FTDI chip connected to a USB port.

Measured by SIGMA2

SIGMA2 configuration: 4 inputs, 200 MHz

How to use this example: It is necessary to activate the USB decoder in Settings → Plugin settings... → USB Plugin Configurations... program menu before viewing the data.

Note: A valid USB plugin license is included (for processing this file only) so that no other license is required.

ex_sigma_usb_incl_lic.stf (6 269 686 B)


An example of a captured communication on a MOS 6502 processor bus.

Measured by 2 OMEGAs connected in chain

OMEGA configuration: 32 inputs, two OMEGA analyzers in chain, 200 MHz

There are two versions of the file different in size. The larger one correspond to whole memory of one of the OMEGA logic analyzer. The shorter one is a cut version of the larger one.

ex_omega_6502.stf (29 908 021 B)

ex_omega_6502_short.stf (418 979 B)


An example of a communication on a JTAG port.

Measured by OMEGA

ex_omega_jtag.stf (92 008 B)


An example of an I2C communication, the reading of an I2C EEPROM.

Measured by SIGMA2

SIGMA2 configuration: 16 inputs, only 2 actively used, 50 MHz

ex_sigma_i2c_2.stf (254 165 B)


An example of an I2C communication, the programming and the verification of an I2C EEPROM.

Measured by SIGMA2

SIGMA2 configuration: 16 inputs, only 2 actively used, 50 MHz

ex_sigma_i2c_1.stf (626 956 B)


An example of UART communication.

Measured by SIGMA2

An example of a captured ASCII sentence on a UART interface.

ex_sigma_uart.stf (4 240 B)


An example of SD card communication.

Measured by OMEGA

OMEGA configuration: 8 inputs, only 6 actively used, 400 MHz

An example of a captured communication on an SD card interface, the reading of an approximately 1 MB size file by a USB memory card reader, clock frequency 50 MHz. OMEGA memory was filled about 60 % by this test.

ex_omega_sdcard.stf (6 358 975 B)


An example of a communication with a graphics display.

Measured by SIGMA2 & OMEGA (for comparison)

An example of a captured communication on a graphics display interface, particularly on -CE, -RD, -WR signals. There are two versions of the file different in size. The shorter one is a cut version of the larger one.

By simple comparison between OMEGA and SIGMA2 files we can assume that the OMEGA logic analyzer is able to capture about 10 times longer interval than the SIGMA2 logic analyzer (OMEGA provides user with 2 times larger memory and 5 times more efficient compression).

ex_omega_disp.stf (35 703 203 B)

ex_omega_disp_short.stf (315 010 B)

ex_sigma_disp.stf (9 762 600 B)


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